ADGM1004JCPZ-R2 [ADI]

0 Hz/DC to 13 GHz, 2.5 kV HBM ESD, SP4T, MEMS Switch with Integrated Driver;
ADGM1004JCPZ-R2
型号: ADGM1004JCPZ-R2
厂家: ADI    ADI
描述:

0 Hz/DC to 13 GHz, 2.5 kV HBM ESD, SP4T, MEMS Switch with Integrated Driver

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0 Hz/DC to 13 GHz, 2.5 kV HBM ESD,  
SP4T, MEMS Switch with Integrated Driver  
ADGM1004  
Data Sheet  
FEATURES  
APPLICATIONS  
Fully operational down to 0 Hz/dc  
On resistance: 2.9 Ω (maximum)  
Off leakage: 0.5 nA (maximum)  
−3 dB bandwidth  
Relay replacements  
Automatic test equipment (ATE): RF, digital, and mixed signals  
Load and probe boards: RF, digital, and mixed signals  
RF test instrumentation  
10.8 GHz (typical) for RF1, RF4  
13 GHz (typical) for RF2, RF3  
RF performance characteristics  
Insertion loss: 0.45 dB (typical) at 2.5 GHz  
Isolation: 24 dB (typical) at 2.5 GHz  
IP3: 67 dBm (typical)  
RF input power: 32 dBm (maximum)  
Actuation lifetime: 1 billion cycles (minimum)  
Hermetically sealed switch contacts  
On switching time: 75 μs (maximum)  
ESD HBM rating  
Reconfigurable filters and attenuators  
High performance RF switching  
GENERAL DESCRIPTION  
The ADGM1004 is a wideband, single-pole, four-throw (SP4T)  
switch fabricated using Analog Devices, Inc., microelectro-  
mechanical system (MEMS) switch technology. This technology  
enables a small form factor, wide RF bandwidth, highly linear, low  
insertion loss switch that is operational from 0 Hz/dc to 13 GHz,  
making it an ideal solution for a wide range of RF and precision  
equipment switching needs.  
5 kV for RF1 to RF4 and RFC pins  
2.5 kV for all other pins  
Integrated driver removes the need for an external driver  
Supply voltage: 3.0 V to 3.6 V  
An integrated driver chip generates a high voltage to  
electrostatically actuate switch that can be controlled by a parallel  
interface and a serial peripheral interface (SPI). All four switches  
are independently controllable.  
CMOS/LVTTL compatible  
The device is packaged in a 24-lead, 5 mm × 4 mm × 1.45 mm,  
lead frame chip-scale package (LFCSP).  
Parallel and SPI Interface  
Independently controllable switches  
Switch is in an open state with no power supply present  
Requirement to avoid floating nodes on all RFx pins (see the  
Floating Node section)  
5 mm × 4 mm × 1.45 mm, 24-lead LFCSP  
Operating temperature range: 0°C to +85°C  
To ensure optimum operation of the ADGM1004, follow the  
Critical Operational Requirements section exactly.  
The on resistance (RON) performance of the ADGM1004 is  
affected by part to part variation, channel to channel variation,  
cycle actuations, settling time post turn on, bias voltage, and  
temperature changes.  
Note that throughout this data sheet, multifunction pins, such  
as IN1/SDI, are referred to either by the entire pin name or by a  
single function of the pin, for example, SDI, when only that  
function is relevant.  
Rev. D  
Document Feedback  
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rights of third parties that may result from its use. Specifications subject to change without notice. No  
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Tel: 781.329.4700 ©2017–2019 Analog Devices, Inc. All rights reserved.  
Technical Support  
www.analog.com  
 
 
 
ADGM1004  
Data Sheet  
TABLE OF CONTENTS  
Features .............................................................................................. 1  
Internal Oscillator Feedthrough............................................... 25  
Internal Oscillator Feedthrough Mitigation ........................... 25  
Low Power Mode........................................................................ 25  
Typical Operating Circuit ......................................................... 26  
Applications Information.............................................................. 27  
Switchable RF Attenuator.......................................................... 27  
Reconfigurable RF Filter ........................................................... 27  
Critical Operational Requirements.............................................. 28  
System Error Considerations Due to On-Resistance Drift... 28  
Floating Node ............................................................................. 28  
Cumulative On Switch Lifetime............................................... 29  
Handling Precautions ................................................................ 29  
Register Details ............................................................................... 31  
Switch Data Register .................................................................. 31  
Outline Dimensions....................................................................... 32  
Ordering Guide .......................................................................... 32  
Applications....................................................................................... 1  
General Description......................................................................... 1  
Revision History ............................................................................... 2  
Functional Block Diagram .............................................................. 4  
Specifications..................................................................................... 5  
Timing Characteristics ................................................................ 7  
Absolute Maximum Ratings............................................................ 9  
Thermal Resistance ...................................................................... 9  
ESD Caution.................................................................................. 9  
Pin Configuration and Function Descriptions........................... 10  
Typical Performance Characteristics ........................................... 12  
Test Circuits..................................................................................... 17  
Terminology .................................................................................... 20  
Theory of Operation ...................................................................... 22  
Parallel Digital Interface............................................................ 22  
SPI Digital Interface................................................................... 23  
REVISION HISTORY  
11/2019—Rev. C to Rev. D  
Change to Features Section and General  
Added Critical Operational Requirements Section, System  
Error Considerations Due to On-Resistance Drift Section,  
Figure 52, Table 7, Floating Node Section, Figure 53, Figure 54,  
Figure 55, Figure 56, and Figure 57.............................................. 28  
Added Figure 58, Figure 59, Cumulative On Switch Lifetime  
Section, Handling Precautions Section, and Figure 61 ............. 29  
Moved Figure 60 and Electrical Overstress (EOS)  
Applications Section......................................................................... 1  
Moved Functional Block Diagram Section................................... 4  
Changes to Figure 1.......................................................................... 4  
Changes to Specifications Section and Table 1............................. 5  
Added Timing Characteristics Section and Table 2;  
Renumbered Sequentially................................................................ 7  
Added Timing Diagrams Section, Figure 2, Figure 3, and  
Figure 4; Renumbered Sequentially ............................................... 8  
Changes to Absolute Maximum Rating Section  
and Table 3......................................................................................... 9  
Changes to Figure 5 and Table 5................................................... 10  
Changes to Typical Performance Characteristics Section......... 12  
Changes to Terminology Section.................................................. 20  
Changes to Parallel Digital Interface Section and  
Table 6 Title ..................................................................................... 22  
Added SPI Digital Interface Section, Addressable Mode Section,  
and Figure 45................................................................................... 23  
Added Daisy-Chain Mode Section, Figure 46, Figure 47, and  
Figure 48 .......................................................................................... 24  
Added Hardware Reset Section and Internal Error Status  
Section.............................................................................................. 25  
Changes to Internal Oscillator Feedthrough Section and  
Internal Oscillator Feedthrough Mitigation Section ................. 25  
Changes to Typical Operating Circuit Section and  
Precautions Section........................................................................ 29  
Added Mechanical Shock Precautions Section and Table 8 ..... 30  
Changes to Figure 62...................................................................... 30  
Added Register Details Section, Switch Data Register Section,  
and Table 9....................................................................................... 31  
Change to Ordering Guide............................................................ 32  
3/2019—Rev. B to Rev. C  
Change to Features Section and Figure 1.......................................1  
Changes to Specifications Section and Table 1..............................3  
Deleted Endnote 1, Endnote 3, and Endnote 6 in Table 1;  
Renumbered Sequentially ................................................................4  
Changes to Table 2.............................................................................5  
Changes to Table 4.............................................................................6  
Updated Typical Performance Characteristics Section  
Format.................................................................................................7  
Changes to Figure 6 to Figure 8 Captions......................................7  
Added Figure 9 to Figure 12; Renumbered Sequentially .............8  
Deleted Figure 15...............................................................................9  
Added Figure 19 and Figure 20 .......................................................9  
Added Figure 24 to Figure 26 ....................................................... 10  
Added Figure 27 to Figure 30 ....................................................... 11  
Figure 49 .......................................................................................... 26  
Deleted Handling Guidelines Section, DC Voltage Range  
Section, and Voltage Standoff Limit Section............................... 27  
Rev. D | Page 2 of 32  
 
Data Sheet  
ADGM1004  
Changes to Figure 32 Caption .......................................................12  
Added Figure 33 ..............................................................................12  
Deleted Figure 27 to Figure 29 ......................................................12  
Changes to Figure 35 ......................................................................13  
Changes to Figure 37 Caption .......................................................13  
Added Figure 39, Figure 40, and Figure 42..................................14  
Changes to Terminology Section ..................................................15  
Changes to Theory of Operation Section ....................................17  
Changed Internal Oscillator/EXTD_EN Section to Internal  
Oscillator Section ............................................................................18  
Changes to Internal Oscillator Section, Typical Operating  
Circuit Section.................................................................................18  
Replaced Figure 44..........................................................................18  
Added Oscillator Feedthrough Mitigation Section and Low  
Power Mode Section .......................................................................18  
Changes to Figure 50 and Figure 51 .............................................19  
Added Voltage Standoff Limit Section .........................................22  
3/2018—Rev. A to Rev. B  
Changes to Features Section............................................................1  
Changes to Table 1 ............................................................................3  
Added Endnote 5 to Table 1; Renumbered Sequentially .............3  
Changes to Table 2 ............................................................................5  
Added Figure 27, Figure 28, and Figure 29; Renumbered  
Sequentially......................................................................................12  
Changes to Floating Node Avoidance Section and Figure 36.....17  
Updated Outline Dimensions........................................................21  
2/2017—Rev. 0 to Rev. A  
Changes to Features Section............................................................1  
Changes to On Resistance Parameter, Table 1 ..............................3  
Change to Table 2..............................................................................5  
Changes to Figure 13 and Figure 14 ...............................................8  
Updated Outline Dimensions........................................................20  
1/2017—Revision 0: Initial Version  
Rev. D | Page 3 of 32  
ADGM1004  
Data Sheet  
FUNCTIONAL BLOCK DIAGRAM  
RF1 IN RF2 IN  
0.1µF  
47pF  
10M*  
10M*  
EXTD_EN  
V
V
DD  
RF1  
RF2  
CP  
ADGM1004  
CHARGE  
PUMP  
OSCILLATOR  
PIN/SPI  
V
CP  
REFERENCE  
AND BIAS  
REGULATOR  
LEVEL  
LV  
LV  
LV  
LV  
HV  
IN1/SDI  
IN2/CS  
SHIFTER  
RFC  
LEVEL  
SHIFTER  
RFC IN  
HV  
HV  
HV  
10M*  
LEVEL  
SHIFTER  
IN3/SCLK  
IN4/SDO  
LEVEL  
SHIFTER  
RF4  
RF3  
GND  
10M*  
10M*  
RF4 IN RF3 IN  
*10MRESISTORS ARE REQUIRED TO AVOID ANY FLOATING NODES.  
FOR MORE INFORMATION, REFER TO THE CRITICAL OPERATIONAL REQUIREMENTS SECTION  
NOTES  
1. LV = LOW VOLTAGE.  
HV = HIGH VOLTAGE.  
Figure 1.  
Rev. D | Page 4 of 32  
 
Data Sheet  
ADGM1004  
SPECIFICATIONS  
Supply voltage (VDD) = 3.0 V to 3.6 V, GND = 0 V, and all specifications at TA = 25°C, unless otherwise noted. Typical specifications tested  
at TA = 25°C with VDD = 3.3 V.  
Table 1.  
Parameter  
Symbol  
Min  
Typ  
Max  
Unit  
Test Conditions/Comments1  
ON-RESISTANCE PROPERTIES  
See Figure 6 to Figure 13 for more details  
Initial On-Resistance  
Properties  
On Resistance  
RON  
2.9  
1
Ω
Ω
Drain source current (IDS) = 50 mA, 0 V input bias,  
at 1 ms after first actuation, maximum  
specification from 0°C to 85°C  
Maximum value tested from 0°C to 85°C  
On-Resistance Match  
Between Channels  
ΔRON CH_CH  
On-Resistance Drift  
Over Time2  
ΔRON TIME  
ΔRON  
−0.25  
5
Ω
Ω
Ω
RON changed from 1 ms to 100 ms after first  
actuation, maximum value tested from 0°C to 85°C  
Over Actuations3  
0.5  
7.2  
109 actuations, switch is actuated at 25°C and  
RON is measured at 25°C  
109 actuations, switch is actuated at 85°C and RON is  
measured at 25°C, 1 kHz actuating frequency,  
220 mA load applied between toggles4  
RELIABILITY PROPERTIES  
Continuously On Lifetime  
Years  
Median time before failure at 50°C5, see Figure 60  
for more details  
Actuation Lifetime  
Cold Switched  
Hot Switched  
109  
Actuations Load between toggling is 220 mA, tested at 85°C  
RF power = continuous wave (CW), terminated  
into 50 Ω, see Figure 14 for details  
10 dBm  
15 dBm  
20 dBm  
5.16 ×  
109  
3.21 ×  
106  
390 ×  
103  
Actuations 50% of test population failure point (T50)  
Actuations 50% of test population failure point (T50)  
Actuations 50% of test population failure point (T50)  
DYNAMIC CHARACTERISTICS  
Operating Frequency  
−3 dB Bandwidth  
RF1, RF4  
RF2, RF3  
Insertion Loss  
0/dc  
13  
GHz  
BW  
IL  
9.5  
11.5  
10.8  
13  
0.45  
0.63  
GHz  
GHz  
dB  
RF1 to RFC and RF4 to RFC channels  
RF2 to RFC and RF3 to RFC channels  
At 2.5 GHz, RFC to RFx  
0.6  
0.95  
dB  
At 6.0 GHz, RFC to RFx  
Isolation  
RFx to RFC  
22  
16  
24  
19  
27  
26  
30  
24  
17  
67  
dB  
dB  
At 2.5 GHz, RFx to RFC (all channels off)  
At 6.0 GHz, RFx to RFC (all channels off)  
At 6 GHz, RF2 to RFC is on, RF1 to RFC is off  
At 6 GHz, RF1 to RFC is on, RF2 to RFC is off  
At 2.5 GHz, RFx to RFx  
At 6.0 GHz, RFx to RFx  
DC to 6.0 GHz  
Input: 900 MHz and 901 MHz, input power =  
27 dBm  
RF1 to RFC  
RF2 to RFC  
Crosstalk  
27  
22  
14  
dB  
dB  
dB  
dBm  
Return Loss  
Third-Order Intermodulation  
Intercept  
RL  
IP3  
Second-Order Intermodulation  
Intercept  
IP2  
95  
dBm  
Input: 900 MHz and 901 MHz, input power =  
27 dBm  
Second Harmonic Distortion  
HD2  
−90  
−74  
dBc  
dBc  
Input: 5.4 MHz, input power = 0 dBm  
Input: 150 MHz and 800 MHz, input power =  
27 dBm  
Rev. D | Page 5 of 32  
 
 
ADGM1004  
Data Sheet  
Parameter  
Symbol  
Min  
Typ  
Max  
Unit  
Test Conditions/Comments1  
Third Harmonic Distortion  
HD3  
−80  
dBc  
Input: 150 MHz and 800 MHz, input power =  
27 dBm  
Total Harmonic Distortion plus THD + N  
Noise  
RF Input Power  
−102  
dBc  
dBm  
V
Load resistance (RL) = 300 Ω, f = 1 kHz, RFx =  
2.5 V p-p  
Switch in the on state and terminated into 50 Ω,  
maximum specification tested at 25  
On switch dc voltage operation range, 0°C to  
85°C  
50% INx to 90% (0.05 dB of final IL value) RFx,  
50 Ω termination, 0°C to 85°C  
50% INx to 10% (0.05 dB of final IL value) RFx,  
50 Ω termination, 0°C to 85°C  
All switches toggled simultaneously, 0°C to 85°C  
CCP = 47 pF, 95% VDD to 90% RFx, 0°C to 85°C  
1 MΩ termination at RFx pin  
32  
+6  
75  
75  
5
DC Voltage Range  
−6  
0
On Switching Time6  
Off Switching Time6  
tON  
μs  
tOFF  
0
μs  
Actuation Frequency  
Power-Up Time  
Video Feedthrough  
Internal Oscillator Frequency  
Internal Oscillator  
Feedthrough7  
kHz  
ms  
mV peak  
MHz  
dBm  
0.75  
16  
10  
8
12  
0°C to 85°C  
−123  
Spectrum analyzer resolution bandwidth (RBW) =  
200 Hz, one switch in on state, all other switches  
off with 50 Ω terminations8  
−146  
dBm/Hz  
CAPACITANCE PROPERTIES  
At 1 MHz, includes LFCSP package capacitance  
On Switch Channel  
Capacitance  
Off Switch Channel  
Capacitance  
CRF ON  
CRF OFF  
3
pF  
pF  
1.5  
LEAKAGE PROPERTIES  
On Leakage  
Maximum specification from 0°C to 85°C  
RFx (off channels) = −6 V, RFC to RFx (on  
channel) = −6 V  
5
nA  
nA  
Off Leakage  
0.5  
RFx = 6 V, RFC = −6 V  
DIGITAL INPUTS  
Minimum and maximum over 0°C to 85°C  
Input High Voltage  
Input Low Voltage  
Input Current  
VINH  
VINL  
IINL, IINH  
2
V
V
μA  
0.8  
1
0.025  
Input voltage (VIN) = VINL or VINH  
Minimum and maximum over 0°C to 85°C  
Sink current (ISINK) = 1 mA  
DIGITAL OUTPUTS  
Output Low Voltage  
Output High Voltage  
VOL  
VOH  
0.4  
VMAX  
VMIN  
VDD  
0.4  
Source current (ISOURCE) = 1 mA  
POWER REQUIREMENTS  
Supply Voltage  
Supply Current  
Minimum and maximum over 0°C to 85°C  
VDD  
IDD  
3.0  
3.6  
2.5  
V
mA  
Digital inputs = 0 V or VDD, SDO is floating in  
SPI mode  
Low Power Mode Current9  
External Drive Voltage10  
External Drive Current  
IDD EXT VCP  
VCPEXT  
ICP EXT VCP  
50  
80.8  
20  
μA  
V
μA  
This value is IDD in low power mode  
79.2  
80  
1 RFx is RF1, RF2, RF3, and RF4. INx is IN1, IN2, IN3, and IN4.  
2 Maximum RON over time is RON (max) + ∆RON TIME (max) = 2.65 Ω.  
3 Maximum RON after 1 billion actuations is RON (max) + ΔRON (max) = 7.9 Ω.  
4 Actuating the switch at 85°C and measuring RON at 25°C is the most severe condition for ADGM1004 RON drift over actuations.  
5 Failure occurs when 50% of a sample lot fails. For more details, see the Cumulative On Switch Lifetime section.  
6 Switch is settled after 75 μs. Do not apply RF power between 0 μs and 75 μs.  
7 Disable the internal oscillator to eliminate feedthrough. When the internal oscillator and charge pump circuitry is disabled, the VCP pin (Pin 24) must be driven with  
80 V dc (VCPEXT) from an external voltage supply required for MEMS switch actuation, as outlined in Table 3.  
8 The spectrum analyzer setup is as follows: RBW = 200 Hz, video bandwidth (VBW) = 2 Hz, span = 100 kHz, input attenuator = 0 dB, the detector type is peak, and the  
maximum hold is off. The fundamental feedthrough noise or harmonic (whichever is higher) is tested.  
9 For more details, see the Low Power Mode section.  
10 For more details, see the Internal Oscillator Feedthrough Mitigation section.  
Rev. D | Page 6 of 32  
Data Sheet  
ADGM1004  
TIMING CHARACTERISTICS  
VDD = 3.0 V to 3.6 V, GND = 0 V, and all specifications TMIN to TMAX = 0°C to +85°C, unless otherwise noted.  
Table 2.  
Parameter  
Description  
Limit at TMIN  
Limit at TMAX  
Unit  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
t1  
t2  
t3  
t4  
t5  
t6  
t7  
t8  
SCLK period  
SCLK high pulse width  
SCLK low pulse width  
CS falling edge to SCLK active edge  
Data setup time  
100  
45  
45  
25  
20  
20  
25  
Data hold time  
SCLK active edge to CS rising edge  
CS falling edge to SDO data available  
SCLK falling edge to SDO data available  
CS rising edge to SDO returns to high impedance  
CS high time between SPI commands  
SCLK edge rejection to CS falling edge  
CS rising edge to SCLK edge rejection  
20  
40  
25  
1
t9  
t10  
t11  
t12  
t13  
100  
25  
25  
1 Measured with a 20 pF load, t9 determines the maximum SCLK frequency when the SDO pin is used.  
Rev. D | Page 7 of 32  
 
ADGM1004  
Data Sheet  
Timing Diagrams  
t1  
SCLK  
CS  
t2  
t3  
t7  
t4  
t6  
t5  
SDI  
R/W  
A6  
A5  
1
D2  
D2  
D1  
D1  
D0  
D0  
t10  
t9  
SDO  
0
0
t8  
Figure 2. Addressable Mode Timing Diagram  
t1  
SCLK  
CS  
t2  
t3  
t7  
t4  
t6  
t5  
SDI  
D7  
D6  
D0  
D7  
D6  
D1  
D0  
INPUT BYTE FOR DEVICE N  
t9  
INPUT BYTE FOR DEVICE N + 1  
t10  
SDO  
0
0
0
D7  
D6  
D1  
D0  
ZERO BYTE  
INPUT BYTE FOR DEVICE N  
t8  
Figure 3. Daisy-Chain Timing Diagram  
t11  
CS  
SCLK  
t13  
t12  
CS  
Figure 4. SCLK/ Timing Relationship  
Rev. D | Page 8 of 32  
Data Sheet  
ADGM1004  
ABSOLUTE MAXIMUM RATINGS  
TA = 25°C, unless otherwise noted.  
Stresses at or above those listed under Absolute Maximum  
Ratings may cause permanent damage to the product. This is a  
stress rating only; functional operation of the product at these  
or any other conditions above those indicated in the operational  
section of this specification is not implied. Operation beyond  
the maximum operating conditions for extended periods may  
affect product reliability.  
Table 3.  
Parameter  
VDD to GND  
Digital Inputs1  
Rating  
−0.3 V to +6 V  
−0.3 V to VDD + 0.3 V or  
+30 mA (whichever occurs  
first)  
7 V  
20 V  
DC Voltage Rating2  
Standoff Voltage3  
RFx to AGND  
Only one absolute maximum rating can be applied at any one time.  
THERMAL RESISTANCE  
10 V  
Thermal performance is directly linked to printed circuit board  
(PCB) design and operating environment. Careful attention to  
PCB thermal design is required.  
RFC to AGND  
RFx to RFC  
10 V  
20 V  
250 mA  
33 dBm  
Current Rating2  
RF Power Rating4  
Temperature  
Operating Range  
Storage Range  
θJA is the natural convection junction to ambient thermal  
resistance measured in a one cubic foot sealed enclosure. θJC is  
the junction to case thermal resistance.  
0°C to +85°C  
−65°C to +150°C  
Table 4. Thermal Resistance  
Package Type  
CP-24-41  
Reflow Soldering (Pb-Free)  
Peak  
Time at Peak  
θJA  
θJC  
Unit  
260 (+0/−5)°C  
10 sec to 30 sec  
60  
75  
°C/W  
Electrostatic Discharge (ESD)  
Human Body Model (HBM)  
RF1 to RF4 and RFC  
All Other Pins  
Field Induced Charged Device  
Model5  
1 A simulated θJA number is evaluated using the maximum junction  
temperature in the package and the total power being dissipated in the  
package under operating conditions. For thermal performance calculation  
purposes at 25°C, a power dissipation of 113 mW per switch can be used.  
This value is calculated from a typical RON of 1.8 Ω and an absolute maximum  
current rating of 250 mA.  
5 kV  
2.5 kV  
All Pins  
Group D  
1.25 kV  
ESD CAUTION  
Mechanical Shock (with 0.5 ms 1500 g  
Pulse) 6  
Vibration (Acceleration at 50 g) 20 Hz to 2000 Hz  
Constant Acceleration  
30,000 g  
1 Clamp overvoltages at INx by internal diodes. Limit the current to the  
maximum ratings given.  
2 This rating is with respect to the switch in the on position with no radio  
frequency signal applied.  
3 This rating is with respect to the switch in the off position.  
4 This rating is with respect to the switch in the on position and terminated  
into 50 Ω. The rating is 27 dBm when the switch is unterminated.  
5 A safe automated handling and assembly process is achieved at this rating  
level by implementing industry standard ESD controls.  
6 If the device is dropped during handling, do not use the device.  
Rev. D | Page 9 of 32  
 
 
 
 
ADGM1004  
Data Sheet  
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS  
IN1/SDI 1  
17 GND  
IN2/CS  
2
3
16 GND  
15 RFC  
14 GND  
13 GND  
ADGM1004  
TOP VIEW  
(Not to Scale)  
IN3/SCLK  
IN4/SDO 4  
GND  
EP1  
EP2  
5
NOTES  
1. EXPOSED PAD 1. EP1 IS INTERNALLY CONNECTED TO EP2  
AND MUST BE CONNECTED TO GND.  
2. EXPOSED PAD 2. EP2 IS INTERNALLY CONNECTED TO EP1  
AND MUST BE CONNECTED TO GND.  
Figure 5. Pin Configuration  
Table 5. Pin Function Descriptions  
Pin No.  
Mnemonic Description  
1
IN1/SDI  
Parallel Logic Digital Control Input 1. The voltage applied to this pin controls the gate of the RF1 to RFC  
MEMS switch. In SPI mode, this pin is the serial data input pin. In parallel mode, if the IN1 pin is low, the  
RF1 to RFC switch is open (off). If the IN1 pin is high, the RF1 to RFC switch is closed (on). In SPI mode, this  
pin functions as the serial data input (SDI) pin.  
2
IN2/CS  
Parallel Logic Digital Control Input 2. The voltage applied to this pin controls the gate of the RF2 to RFC  
MEMS switch. In parallel mode, if IN2 is low, the RF2 to RFC switch is open (off). If IN2 is high, the RF2 to  
RFC switch is closed (on). In SPI mode, this pin is the chip select (CS) pin. CS is an active low signal that  
selects the slave device with which the master device intends to communicate. Typically, there is a  
dedicated CS signal between the master device and each slave device. The CS pin also functions to  
synchronize and frame the communications to and from the slave device.  
3
4
IN3/SCLK  
IN4/SDO  
GND  
Parallel Logic Digital Control Input 3. The voltage applied to this pin controls the gate of the RF3 to RFC  
MEMS switch. In parallel mode, if IN3 is low, the RF3 to RFC switch is open (off). If IN3 is high, the RF3 to  
RFC switch is closed (on). In SPI mode, this pin functions as the serial clock (SCLK) pin that synchronizes the  
slave device(s) to the master device. Typically, the SCLK signal is shared for all slave devices on the serial  
bus. The SCLK signal is always driven by the master device.  
Parallel Logic Digital Control Input 4. The voltage applied to this pin controls the gate of the RF4 to RFC  
MEMS switch. In parallel mode, if IN4 is low, the RF4 to RFC switch is open (off). If IN4 is high, the RF4 to  
RFC switch is closed (on). In SPI mode, this pin functions as the serial data output (SDO) pin. Typically, the  
SDO pin is shared for all slave devices on the serial bus. The SDO pin is driven by only one slave device at a time,  
otherwise it is high impedance. The SDO pin is always high impedance when the CS pin is deasserted high.  
5, 8, 9, 11, 13,  
14, 16, 17,  
19, 21, 22  
Ground Connection.  
6
PIN/SPI  
Parallel or Serial Logic Control Enable Pin. The SPI interface is enabled when this pin is high. When this pin  
is low the parallel digital interface is enabled.  
7
EXTD_EN  
External Voltage Drive Enable. In normal operation, set EXTD_EN low to enable the built in 10 MHz oscillator,  
which enables the internal driver IC voltage boost circuitry. Setting EXTD_EN high disables the internal 10 MHz  
oscillator and driver boost circuitry. With the oscillator disabled, the switch can still be controlled via the  
logic interface pins (IN1 to IN4) or via SPI interface, but the VCP pin must be driven with 80 V dc from an  
external voltage supply. In this mode, the ADGM1004 only consumes 50 μA maximum supply current.  
Disabling the internal oscillator eliminates the associated 10 MHz noise feedthrough from the switch.  
10  
12  
RF4  
RF3  
RF4 Port. This pin can be an input or an output. If unused, connect the pin to GND or terminate the pin  
with a 50 Ω resistor to GND.  
RF3 Port. This pin can be an input or an output. If unused, connect the pin to GND or terminate the pin  
with a 50 Ω resistor to GND.  
15  
18  
RFC  
RF2  
Common RF Port. This pin can be an input or an output.  
RF2 Port. This pin can be an input or an output. If unused, connect the pin to GND or terminate the pin  
with a 50 Ω resistor to GND.  
20  
RF1  
RF1 Port. This pin can be an input or an output. If unused, connect the pin to GND or terminate the pin  
with a 50 Ω resistor to GND.  
Rev. D | Page 10 of 32  
 
 
Data Sheet  
ADGM1004  
Pin No.  
Mnemonic Description  
23  
VDD  
Positive Power Supply Input. The recommended decoupling capacitor to ground value is 0.1 μF. For the  
recommended input voltage for this chip, see the Specifications section.  
24  
VCP  
Charge Pump Capacitor Terminal. The recommended shunt capacitor to ground value is 47 pF (100 V  
rated). If the EXTD_EN pin is high, input an 80 V dc drive voltage into VCP to drive the switches.  
EP1  
EP2  
Exposed Pad 1. EP1 is internally connected to EP2 and must be connected to GND.  
Exposed Pad 2. EP2 is internally connected to EP1 and must be connected to GND.  
Rev. D | Page 11 of 32  
ADGM1004  
Data Sheet  
TYPICAL PERFORMANCE CHARACTERISTICS  
In Figure 14, T50 refers to the number of cycles required for 50% of the population to fail.  
2.4  
2.2  
2.0  
1.8  
1.6  
1.4  
1.2  
1.0  
100  
90  
80  
70  
60  
50  
40  
30  
20  
10  
0
V
A
= 3.3V  
RF1 TO RFC  
RF2 TO RFC  
RF3 TO RFC  
RF4 TO RFC  
DD  
T
= 25°C  
1 ACTUATION  
167 MILLION ACTUATIONS  
500 MILLION ACTUATIONS  
1 BILLION ACTUATIONS  
SWITCH ACTUATED AT 85°C  
R
MEASURED AT 25°C  
= 3.3V  
ON  
DD  
V
0
1
2
3
4
5
6
0
0.5  
1.0  
1.5  
2.0  
2.5  
3.0  
3.5  
4.0  
4.5  
5.0  
ASOLUTE R  
()  
TIME (Seconds)  
ON  
Figure 9. Absolute RON vs. Time (1 ms to 5 sec) on Linear Scale  
Figure 6. Population Percentage vs. Absolute RON, Switch Actuated at 85°C  
and RON measured at 25°C  
0
3.0  
SWITCH ACTUATED AT 25°C  
MEASURED AT 25°C  
V
= 3.3V  
DD  
R
V
A
= 3.3V  
ON  
DD  
–0.05  
–0.10  
–0.15  
–0.20  
–0.25  
–0.30  
–0.35  
–0.40  
T
= 25°C  
2.5  
2.0  
1.5  
1.0  
0.5  
0
RF1 TO RFC  
RF2 TO RFC  
RF3 TO RFC  
RF4 TO RFC  
RF1 TO RFC  
RF2 TO RFC  
RF3 TO RFC  
RF4 TO RFC  
0
0.5  
1.0  
1.5  
2.0  
2.5  
3.0  
3.5  
4.0  
4.5  
5.0  
1
10  
100  
1k  
10k  
100k  
1M  
10M  
100M  
TIME (Seconds)  
SWITCH ACTUATION NUMBER  
Figure 10. RON Drift vs. Time (1 ms to 5 sec) on Linear Scale, Normalized at Zero  
Figure 7. Absolute RON vs. Switch Actuation Number, Switch Actuated at 25°C  
and RON Measured at 25°C  
0
1.0  
SWITCH ACTUATED AT 25°C  
V
= 3.3V  
DD  
R
MEASURED AT 25°C  
= 3.3V  
T = 25°C  
A
ON  
DD  
0.8  
0.6  
–0.05  
–0.10  
–0.15  
–0.20  
–0.25  
–0.30  
–0.35  
–0.40  
V
0.4  
0.2  
0
–0.2  
–0.4  
–0.6  
–0.8  
–1.0  
RF1 TO RFC  
RF2 TO RFC  
RF3 TO RFC  
RF4 TO RFC  
RF1 TO RFC  
RF2 TO RFC  
RF3 TO RFC  
RF4 TO RFC  
1
10  
100  
1k  
10k  
100k  
1M  
10M  
100M  
0.001  
0.01  
0.1  
1
10  
TIME (Seconds)  
SWITCH ACTUATION NUMBER  
Figure 11. RON Drift vs. Time (1 ms to 5 sec) on Log Scale, Normalized at Zero  
Figure 8. RON Drift vs. Switch Actuation Number, Normalized at Zero, Switch  
Actuated at 25°C and RON Measured at 25°C  
Rev. D | Page 12 of 32  
 
 
Data Sheet  
ADGM1004  
2.0  
0
–0.5  
–1.0  
–1.5  
–2.0  
–2.5  
–3.0  
V
V
V
= 3.0V  
T
= 25°C  
DD  
DD  
DD  
RF2 TO RFC  
RF1 TO RFC  
A
= 3.3V  
= 3.6V  
1.8  
1.6  
1.4  
1.2  
1.0  
0.8  
0.6  
0.4  
0.2  
0
T
= 25°C  
A
V
= 3.3V  
DD  
–6  
–4  
–2  
0
2
4
6
0
2
4
6
8
10  
12  
14  
16  
SIGNAL BIAS VOLTAGE (V)  
FREQUENCY (GHz)  
Figure 12. RON vs. Signal Bias Voltage over Supply Voltages (Measured 5 sec  
Post Switch Turn On Time, RF1 to RFC on)  
Figure 15. Insertion Loss vs. Frequency, Linear Scale (VDD = 3.3 V)  
2.0  
0
T
T
T
= 0°C  
A
A
A
V
= 3.3V  
85°C  
25°C  
0°C  
DD  
= 25°C  
= 85°C  
1.8  
1.6  
1.4  
1.2  
1.0  
0.8  
0.6  
0.4  
0.2  
0
–0.5  
–1.0  
–1.5  
–2.0  
–2.5  
V
= 3.3V  
DD  
–3.0  
100M  
–6  
–4  
–2  
0
2
4
6
1G  
10G  
FREQUENCY (Hz)  
100G  
SIGNAL BIAS VOLTAGE (V)  
Figure 13. RON vs. Signal Bias Voltage over Temperature (Measured 5 sec Post  
Switch Turn On Time, RF1 to RFC on)  
Figure 16. Insertion Loss vs. Frequency over Temperature (VDD = 3.3 V, RF1 to RFC)  
0
–0.05  
–0.10  
–0.15  
–0.20  
–0.25  
–0.30  
–0.35  
–0.40  
–0.45  
–0.50  
0
T
V
= 25°C  
A
98  
= 3.3V  
DD  
10dBm  
15dBm  
20dBm  
–10  
–20  
–30  
–40  
–50  
–60  
–70  
–80  
94  
90  
82  
65  
T50  
45  
25  
14  
8
4
INSERTION LOSS  
OFF ISOLATION  
RETURN LOSS  
1
10k  
100k  
1M  
10M  
100M  
1B  
10B  
100B  
0
50  
100  
150  
200  
SWITCH ACTUATIONS (Cycles)  
FREQUENCY (MHz)  
Figure 14. Hot Switching Probability Distribution on Log Normal with 95%  
Confidence Interval (CI) (RF Power = CW, Terminated into 50 Ω, TA = 25°C,  
VDD = 3.3 V)  
Figure 17. Insertion Loss and Off Isolation/Return Loss vs. Frequency  
(VDD = 3.3 V, RF1 to RFC)  
Rev. D | Page 13 of 32  
 
 
ADGM1004  
Data Sheet  
0
0
–10  
–20  
–30  
–40  
–50  
–60  
T
V
= 25°C  
RF1 TO RFC  
RF2 TO RFC  
A
RF1  
RF2  
RFC (RF1 ON)  
T
V
= 25°C  
= 3.3V  
A
= 3.3V  
DD  
DD  
–10  
–20  
–30  
–40  
–50  
–60  
–70  
–80  
0
1
2
3
4
5
6
7
8
9
10  
0
1
2
3
4
5
6
7
8
9
10  
FREQUENCY (GHz)  
FREQUENCY (GHz)  
Figure 18. Off Isolation vs. Frequency, All Channels Off (VDD = 3.3 V)  
Figure 21. Return Loss vs. Frequency (VDD = 3.3 V)  
0
0
–10  
–20  
–30  
–40  
–50  
–60  
–70  
–80  
T
T
T
= 85°C  
= 25°C  
= 0°C  
T
V
= 25°C  
A
A
A
V
= 3.3V  
RF1 TO RF2  
RF2 TO RF1  
A
DD  
= 3.3V  
DD  
–10  
–20  
–30  
–40  
–50  
–60  
–70  
–80  
0
1
2
3
4
5
6
7
8
9
10  
0
1
2
3
4
5
6
7
8
9
10  
FREQUENCY (GHz)  
FREQUENCY (GHz)  
Figure 19. Off Isolation vs. Frequency over Temperature, All Channels Off  
(VDD = 3.3 V, RF1 to RFC)  
Figure 22. Crosstalk vs. Frequency (VDD = 3.3 V)  
0
0
–10  
–20  
–30  
–40  
–50  
–60  
–70  
–80  
T
T
T
= 85°C  
= 25°C  
= 0°C  
V
= 3.3V  
A
A
A
DD  
T
V
= 25°C  
= 3.3V  
A
DD  
–10  
–20  
–30  
–40  
–50  
–60  
RF2 TO RFC  
RF3 TO RFC  
RF4 TO RFC  
–70  
–80  
0
1
2
3
4
5
6
7
8
9
10  
0
1
2
3
4
5
6
7
8
9
10  
FREQUENCY (GHz)  
FREQUENCY (GHz)  
Figure 20. Off Isolation vs. Frequency, RF1 to RFC On (VDD = 3.3 V)  
Figure 23. Crosstalk vs. Frequency over Temperature (VDD = 3.3 V, RF2 to RF1)  
Rev. D | Page 14 of 32  
Data Sheet  
ADGM1004  
0
4.0  
3.5  
3.0  
2.5  
2.0  
1.5  
1.0  
0.5  
0
OFF SWITCH CAPACITANCE  
ON SWITCH CAPACITANCE  
V
= 3.3V  
DD  
100Hz  
1kHz  
5kHz  
10kHz  
15kHz  
20kHz  
–20  
–40  
–60  
–80  
–100  
–120  
–6  
–4  
–2  
0
2
4
6
0
2
4
6
8
10  
12  
SIGNAL BIAS VOLTAGE (V)  
SIGNAL AMPLITUDE (V p-p)  
Figure 24. THD + N vs. Signal Amplitude (VDD = 3.3 V, RLOAD = 300 Ω, TA = 25°C,  
Signal Source Impedance = 20 Ω)  
Figure 27. Switch Capacitance vs. Signal Bias Voltage  
0
32  
28  
24  
20  
16  
12  
8
V
= 3.3V  
DD  
T
V
= 25°C  
= 3.3V  
–10  
–20  
A
DD  
–30  
–40  
0dBm  
5dBm  
10dBm  
14.5dBm  
–50  
–60  
–70  
–80  
–90  
–100  
–110  
–120  
4
0
0
2
4
6
8
10  
12  
14  
16  
18  
20  
0
4
8
12  
16  
20  
24  
28  
32  
FREQUENCY (kHz)  
P
(dBm)  
IN  
Figure 25. THD + N vs. Frequency (VDD = 3.3 V, RLOAD = 300 Ω, TA = 25°C, Signal  
Source Impedance = 20 Ω  
Figure 28. Output Power (POUT) vs. Input Power (PIN) (VDD = 3.3 V, Signal  
Frequency = 4 GHz)  
3.5  
3.0  
2.5  
2.0  
1.5  
1.0  
0.5  
0
1.0  
0
–0.5  
–1.0  
–1.5  
–2.0  
–2.5  
–3.0  
–3.5  
–4.0  
0.8  
T
V
= 25°C  
A
0.6  
= 3.3V  
DD  
0.4  
0.2  
0
–0.2  
–0.4  
–0.6  
–0.8  
–1.0  
DIGITAL CONTROL  
tON tOFF TEST SIGNAL  
/
V
A
= 3.3V  
DD  
–4.5  
–5.0  
T
= 25°C  
–0.5  
FREQUENCY = 4GHz  
12  
INPUT POWER (dBm)  
0
10  
20  
TIME (µs)  
30  
40  
0
4
8
16  
20  
24  
28  
32  
Figure 26. Digital Control Signal and Test Signal vs. Time (VDD = 3.3 V)  
Figure 29. Insertion Loss vs. Input Power  
Rev. D | Page 15 of 32  
ADGM1004  
Data Sheet  
–120  
–122  
–124  
–126  
–128  
–130  
–132  
–134  
–136  
–120  
NORMAL OPERATING MODE  
INTERNAL OSCILLATOR DISABLED  
T
V
= 25°C  
= 3.3V  
T
V
= 25°C  
= 3.3V  
A
A
DD  
–122  
–124  
–126  
–128  
–130  
–132  
–134  
DD  
–136  
10.17  
10.19  
10.21  
10.23  
10.25  
10.27  
0
10  
20  
30  
40  
50  
60  
70  
80  
90  
100  
FREQUENCY (MHz)  
FREQUENCY (MHz)  
Figure 31. Oscillator Feedthrough vs. Frequency, Wide Bandwidth  
(VDD = 3.3 V)  
Figure 30. Oscillator Feedthrough vs. Frequency, Zoomed in at 10.2 MHz  
(VDD = 3.3 V)  
Rev. D | Page 16 of 32  
Data Sheet  
ADGM1004  
TEST CIRCUITS  
The test circuits shown in Figure 32 to Figure 43 are applicable to all channels. Additional pins are omitted for clarity and VS is the source voltage.  
V
V
DD  
DD  
0.1µF  
0.1µF  
V
OUT  
50  
R
50  
L
V
S
V
V
DD  
DD  
RF1  
RF2  
RF1  
RF2  
V
OUT  
R
50ꢀ  
L
50ꢀ  
NETWORK  
ANALYZER  
RFC  
RFC  
IN2  
IN1  
50ꢀ  
50ꢀ  
IN2  
IN1  
NETWORK  
ANALYZER  
V
S
V
IN2  
V
IN2  
RF3  
RF4  
RF3  
RF4  
V
IN1  
V
IN1  
50ꢀ  
50ꢀ  
50ꢀ  
50ꢀ  
IN4  
IN3  
IN4  
IN3  
V
IN4  
V
IN4  
GND  
GND  
GND  
GND  
V
IN3  
V
IN3  
Figure 32. Insertion Loss and Return Loss  
Figure 34. Isolation (RF2 to RFC On, RF1 to RFC Off)  
V
V
DD  
DD  
0.1µF  
0.1µF  
50  
NETWORK  
ANALYZER  
V
S
V
DD  
V
DD  
RF1  
RF2  
RF1  
RF2  
V
OUT  
50  
R
50ꢀ  
V
L
S
RFC  
RFC  
50ꢀ  
V
OUT  
R
50ꢀ  
IN2  
IN1  
L
IN2  
IN1  
50ꢀ  
NETWORK  
ANALYZER  
V
IN2  
V
IN2  
RF3  
RF4  
RF3  
RF4  
V
IN1  
V
50ꢀ  
50ꢀ  
IN1  
50ꢀ  
50ꢀ  
IN4  
IN3  
IN4  
IN3  
V
IN4  
V
GND  
GND  
IN4  
GND  
GND  
V
IN3  
V
IN3  
Figure 35. Crosstalk  
Figure 33. Isolation (All Switches Off)  
Rev. D | Page 17 of 32  
 
 
 
 
ADGM1004  
Data Sheet  
V
DD  
0.1µF  
V
DD  
RF1  
RF2  
NC  
INTERNAL 50  
TERMINATION  
RFC  
OSCILLOSCOPE  
IN2  
IN1  
1Mꢀ  
V
V
DD  
IN2  
0.1µF  
RFC  
RF3  
RF4  
V
IN1  
NC  
NC  
V
DD  
V
OUT  
RFx  
50%  
50%  
V
IN4  
IN3  
R
L
INx  
V
S
INx  
50  
V
10%  
90%  
IN4  
V
OUT  
GND  
GND  
GND  
GND  
V
IN3  
tON  
tOFF  
Figure 38. Switch Timing, tON and tOFF (All RFx Terminals Connected to  
50 Ω Termination)  
Figure 36. Video Feedthrough  
V
V
DD  
DD  
0.1µF  
0.1µF  
V
V
DD  
DD  
RF1  
RF2  
RF1  
50  
50  
RFC  
50ꢀ  
RFC  
RF  
AMPLIFIER  
SPECTRUM  
RF  
ANALYZER  
SOURCE  
RF  
SOURCE  
INPUT  
RF2  
COMBINER  
NETWORK  
IN2  
IN2  
IN1  
RF  
SOURCE  
V
IN2  
IN1  
V
IN2  
RF3  
RF4  
RF3  
RF4  
V
V
IN1  
IN1  
50ꢀ  
50ꢀ  
50ꢀ  
IN4  
IN3  
IN4  
IN3  
50ꢀ  
V
V
IN4  
IN4  
GND GND  
GND  
GND  
V
V
IN3  
IN3  
Figure 39. Hot Switching Evaluation Setup, 2 GHz RF Source, 50% Duty Cycle,  
5 kHz Switching Actuation Speed  
Figure 37. IP2 and IP3  
Rev. D | Page 18 of 32  
Data Sheet  
ADGM1004  
V
V
DD  
DD  
0.1µF  
RF1  
RF2  
50  
RFC  
SPECTRUM  
ANALYZER  
RF  
SOURCE  
IN2  
IN1  
V
V
DD  
V
0.1µF  
RFC  
IN2  
RF3  
RF4  
V
IN1  
50ꢀ  
50ꢀ  
V
DD  
RFx  
IN4  
IN3  
INx  
V
IN4  
GND  
GND  
GND  
GND  
V
IN3  
V
INx  
Figure 40. On Resistance  
Figure 42. Second and Third Harmonics, RF Power  
V
V
DD  
DD  
0.1µF  
0.1µF  
V
V
DD  
DD  
RF1  
RF1  
A
A
6V  
6V  
–6V  
RFC  
RFC  
A
RF2  
–6V  
V
–6V  
RF2  
A
NC  
IN2  
IN1  
IN2  
IN1  
V
IN2  
IN2  
RF3  
RF4  
RF3  
–6V  
V
V
IN1  
IN1  
A
A
6V  
6V  
RF4  
–6V  
IN4  
IN3  
IN4  
IN3  
V
V
IN4  
IN4  
GND  
GND  
GND  
GND  
V
V
IN3  
IN3  
NC = NO CONNECT  
NC = NO CONNECT  
Figure 41. Off Leakage  
Figure 43. On Leakage  
Rev. D | Page 19 of 32  
 
ADGM1004  
Data Sheet  
TERMINOLOGY  
Insertion Loss  
Second-Order Intermodulation Intercept (IP2)  
Insertion loss is the amount of signal attenuation between the  
input and output ports of the switch when the switch is in the  
on state. Expressed in decibels, ensure that insertion loss is as  
small as possible for maximum power transfer.  
IP2 is the intersection point of the fundamental POUT vs. PIN  
extrapolated line and the second-order intermodulation products  
extrapolated line of a two-tone test. IP2 is a figure of merit that  
characterizes the switch linearity.  
An example calculation of insertion loss based on the setup in  
Figure 32 is as follows:  
Second Distortion Harmonic (HD2)  
HD2 is the amplitude of the second distortion harmonic, where, for  
a signal whose fundamental frequency is f, the second distortion  
harmonic has a frequency of 2 f. This measurement is a single-  
tone test expressed with reference to the carrier signal (dBc).  
Insertion Loss (dB) = −20log10|SRF2RFC  
|
where SRF2RFC is the transmission coefficient measured from RF2  
to RFC with RF2 in the on position. All unused switches are in  
the off position and terminated in a purely resistive load of 50 Ω.  
Third Distortion Harmonic (HD3)  
HD3 is the amplitude of the third distortion harmonic, where, for a  
signal whose fundamental frequency is f, the third distortion  
harmonic has a frequency of 3 f. This measurement is a single  
tone test expressed with reference to the carrier signal (dBc).  
Isolation  
Isolation is the amount of signal attenuation between the input  
and output ports of the switch when the switch is in the off  
state. Expressed in decibels, ensure that isolation is as large as  
possible.  
On Switching Time (tON  
)
tON is the time it takes for the switch to turn on. tON is measured  
An example calculation of isolation based on the setup in Figure 33  
is as follows:  
from 50% of the control signal (INx) to 90% of the on level. No  
power was applied through the switch during this test (cold  
switched). The switch was terminated into a 50 Ω load.  
Isolation (dB) = −20log10|SRFCRF1  
|
where SRFCRF1 is the transmission coefficient measured from RFC  
to RF1 with RF1 in the off position. All unused switches are in  
the off position and terminated in a purely resistive load of 50 Ω.  
Off Switching Time (tOFF  
)
tOFF is the time it takes for the switch to turn off. tOFF is measured  
from 50% of the control signal (INx) to 10% of the on level. No  
power was applied through the switch during this test (cold  
switched). The switch was terminated into a 50 Ω load.  
Crosstalk  
Crosstalk is a measure of unwanted signals coupled through  
from one channel to another because of parasitic capacitance.  
Actuation Frequency  
The actuation frequency refers to the speed at which the  
ADGM1004 can be switched on and off. The actuation  
frequency is dependent on both the settling times and the on  
and off switching times.  
An example calculation of crosstalk based on the setup in  
Figure 35 is as follows:  
Crosstalk (dB) = −20log10|SRF1RF2  
|
where SRF1RF2 is the transmission coefficient measured from RF1  
to RF2 with RF1 in the off position and RF2 in the on position.  
All unused switches are in the off position and terminated in a  
purely resistive load of 50 Ω.  
Power-Up Time  
The power-up time is a measure of the time required for the  
device to power up and start to pass 90% of an RF input signal  
after the VDD pin reaches 95%.  
Return Loss  
Video Feedthrough  
Return Loss is the magnitude of the reflection coefficient  
expressed in decibels, and the amount of reflected signal relative  
to the incident signal.  
Video feedthrough is a measure of the spurious signals present  
at the RFx ports of the switch when the control voltage is switched  
from high to low or from low to high without an RF signal present.  
An example calculation of return loss based on the setup in  
Figure 32 is as follows:  
Internal Oscillator Frequency  
The internal oscillator frequency is the value of the on-board  
oscillator that drives the gate control chip of the ADGM1004.  
Return Loss (dB) = −20log10|S11|  
where S11 is the reflection coefficient of the port under test.  
Internal Oscillator Feedthrough  
The internal oscillator feedthrough is the amount of internal  
oscillator signal that feeds through to the RFx and RFC pins of  
the switch. This signal appears as a noise spur on the RFx and  
RFC pins of the switch at the frequency the oscillator is  
operating at and the harmonics thereof.  
Third-Order Intermodulation Intercept (IP3)  
IP3 is the intersection point of the fundamental POUT vs. PIN  
extrapolated line and the third-order intermodulation products  
extrapolated line of a two-tone test. IP3 is a figure of merit that  
characterizes the switch linearity.  
Rev. D | Page 20 of 32  
 
Data Sheet  
ADGM1004  
On Resistance (RON  
)
Hot Switching  
RON is the resistance of a switch in the closed/on state measured  
Hot switching is operating the switch in a mode where a voltage  
differential exists between the source and the drain when the  
switch is closed and/or current is flowing from RFx to RFC  
when the switch opens. Hot switching results in a reduced switch  
life, depending on the magnitude of the open circuit voltage  
between the source and the drain.  
between the RFx and RFC package pins. Measure resistance in  
4-wire mode to null out any cabling or PCB series resistances.  
On Resistance Drift  
On resistance drift is the change in the RON of the switch over  
the specified criteria in Table 1.  
Input High Voltage (VINH  
INH is the minimum input voltage for Logic 1.  
Input Low Voltage (VINL  
INL is the maximum input voltage for Logic 0.  
Input Current (IINL, IINH  
INL and IINH are the low and high input currents of the digital  
inputs.  
Low Power Mode Current (IDD EXT VCP  
DD EXT VCP is the amount of supply current used by the gate driver  
)
Continuously On Lifetime  
V
The continuously on lifetime parameter measures how long the  
switch is left in a continuously on state. If the switch is left in  
the on position for an extended period, this parameter affects  
the turn off mechanism of the device.  
)
V
)
Actuation Lifetime  
I
Actuation lifetime is the number of consecutive open, close, and  
open cycles that the device can complete without the RON  
exceeding a specified limit and no occurrence of failures to  
open (FTO) or failures to close (FTC).  
)
I
circuity when the internal oscillator and the charge pump  
circuitry are disabled by setting the EXTD_EN pin high.  
Cold Switching  
Cold switching operates the switch in a mode so that no voltage  
differential exists between the source and the drain when the  
switch is closed and/or no current is flowing from the source to  
the drain when the switch opens. All switches have longer lives  
when cold switched.  
External Drive Current (ICP EXT VCP  
)
I
CP EXT VCP is the amount of current used by the ADGM1004  
from the external 80 V power supply when the internal  
oscillator and the charge pump circuitry are turned off by  
setting EXTD_EN pin high.  
Rev. D | Page 21 of 32  
ADGM1004  
Data Sheet  
THEORY OF OPERATION  
The ADGM1004 is a wideband SP4T switch fabricated using  
Analog Devices MEMS switch technology. This technology  
enables high power, low loss, low distortion GHz switches for  
use in demanding RF applications.  
When the bias voltage between the gate and the source exceeds  
the threshold voltage of the switch (VTH) the contacts on the  
beam touch the drain, which completes the circuit between the  
source and the drain and turns the switch on. When the bias  
voltage is removed, that is, the 0 V on the gate electrode, the  
beam acts as a spring generating a sufficient restoring force to  
open the connection between the source and the drain, thus  
breaking the circuit and turning the switch off.  
The MEMS switch simultaneously brings together high  
frequency RF performance and 0 Hz/dc precision performance.  
This combination, coupled with superior reliability and a tiny  
surface-mountable form factor, makes the MEMS switch an  
ideal switching solution for all RF and precision signal  
instrumentation needs.  
The silicon cap covering the switch die is shown in Figure 44. This  
cap hermetically seals the switch, which improves reliability.  
The switch contacts do not suffer from dry switching or low power  
switching lifetime degradation.  
Figure 44 shows a cross section of the switch with dimensions.  
The switch is an electrostatically actuated cantilever beam  
connected in a 3-terminal configuration. Functionally, the switch is  
analogous to a field effect transistor (FET). The terminals can  
be used as a source, gate, or drain.  
PARALLEL DIGITAL INTERFACE  
The ADGM1004 is controlled via a parallel digital interface.  
Standard complimentary metal-oxide semiconductor (CMOS)/  
low voltage transistor to transistor logic (LVTTL) signals  
applied through this interface control the actuation or release of  
all ADGM1004 switch channels. Gate signals applied are  
boosted to provide the required voltages required to actuate the  
MEMS switch.  
SILICON CAP  
CANTILEVER BEAM  
SOURCE  
DRAIN  
METAL  
GATE  
CONTACT GAP  
Setting the  
/SPI pin low enables the parallel digital interface  
PIN  
in 4-wire SP4T mode. In parallel mode, Pin 1 to Pin 4 (IN1 to  
IN4) control the switching functions of the ADGM1004. When  
a Logic 1 is applied to one of these pins, the gate of the  
corresponding switch is activated and the switch turns on.  
Conversely, when a Logic 0 is applied to one of these pins, the  
switch turns off. Note that it is possible to connect more than  
one RFx input to RFC at a time. See Table 6 for the ADGM1004  
truth table.  
SILICON  
Figure 44. Cross Section of the MEMS Switch Design Showing the Cantilever  
Switch Beam (Not to Scale)  
When a dc actuation voltage is applied between the gate  
electrode and the source (the switch beam), an electrostatic  
force is generated, resulting in attracting the beam toward the  
substrate. A separate on-board driver IC generates the 80 V bias  
voltage used for actuation.  
Table 6. Truth Table When in Parallel Digital Interface Mode  
IN1  
IN2  
IN3  
IN4  
RF1 to RFC  
RF2 to RFC  
Off  
RF3 to RFC  
Off  
RF4 to RFC  
Off  
0
0
0
0
Off  
0
0
0
1
Off  
Off  
Off  
On  
0
0
1
0
Off  
Off  
On  
Off  
0
0
1
1
Off  
Off  
On  
On  
0
1
0
0
Off  
On  
Off  
Off  
0
1
0
1
Off  
On  
Off  
On  
0
1
1
0
Off  
On  
On  
Off  
0
1
1
1
Off  
On  
On  
On  
1
0
0
0
On  
Off  
Off  
Off  
1
0
0
1
On  
Off  
Off  
On  
1
0
1
0
On  
Off  
On  
Off  
1
0
1
1
On  
Off  
On  
On  
1
1
0
0
On  
On  
Off  
Off  
1
1
0
1
On  
On  
Off  
On  
1
1
1
0
On  
On  
On  
Off  
1
1
1
1
On  
On  
On  
On  
Rev. D | Page 22 of 32  
 
 
 
 
Data Sheet  
ADGM1004  
Addressable Mode  
SPI DIGITAL INTERFACE  
Addressable mode is the default mode for the ADGM1004  
upon power-up. A single SPI frame in addressable mode is bound  
The ADGM1004 can be controlled via a digital SPI when the  
/SPI pin is high. The SPI is compatible with SPI Mode 0  
PIN  
by a  
falling edge and the succeeding  
rising edge. The  
CS  
CS  
(clock polarity (CPOL) = 0, clock phase (CPHA) = 0) and Mode 3  
(CPOL = 1, CPHA = 1) and it operates with SCLK frequencies up  
to 10 MHz. When the SPI is active, the default mode is  
frame is comprised of 16 SCLK cycles. The timing diagram for  
addressable mode is shown in Figure 45. The first SDI signal bit  
indicates if the SPI command is a read or write command. The  
next seven bits determine the target register address. The  
remaining eight bits provide the data to the addressed register.  
The first eight bits are ignored during a read command because  
the SDO pin propagates out the data contained in the addressed  
register during these clock cycles.  
addressable, in which, the device registers are accessed by a 16-bit  
SPI command that is bound by the state of the  
pin. The  
CS  
ADGM1004 can also operate in daisy-chain mode.  
The SPI interface pins of the ADGM1004 are , SCLK, SDI,  
CS  
pin low when using the SPI. The data on  
and SDO. Hold the  
CS  
the SDI pin is captured on the rising edge of SCLK, and data is  
propagated out on the SDO pin on the falling edge of SCLK. The  
SDO pin has a push pull output driver architecture. Therefore,  
the ADGM1004 does not require pull-up resistors. The two  
modes of SPI operation are: addressable and daisy-chain.  
The target register address of an SPI command is determined on  
the eighth SCLK rising edge. Data from this register propagates  
out on the SDO pin from the 9th to the 16th SCLK falling edge  
during SPI reads. A register write occurs on the 16th SCLK rising  
edge during SPI writes. During any SPI command, the SDO pin  
sends out eight alignment bits on the first eight SCLK falling  
edges. The alignment bits observed at the SDO pin are 0x25.  
1
2
3
4
5
6
7
8
9
10  
11  
12  
13  
14  
15  
16  
CS  
SCLK  
SDI  
R/W A6  
0
A5  
A4  
A3  
A2  
A1  
A0  
D7  
D6  
D5  
D4  
D3  
D2  
D1  
D0  
SDO  
0
1
0
0
1
0
1
D7  
D6  
D5  
D4  
D3  
D2  
D1  
D0  
Figure 45. Addressable Mode Timing Diagram  
Rev. D | Page 23 of 32  
 
 
ADGM1004  
Data Sheet  
For the timing diagram of a typical daisy-chain SPI frame,  
see Figure 48. When the  
pin goes high, Device 1 writes  
Daisy-Chain Mode  
CS  
The connection of several ADGM1004 devices in a daisy-chain  
Command 0, Bits[7:0], to the SWITCH_DATA register, Device 2  
writes Command 1, Bits[7:0], to the switches, and so on. The  
SPI block uses the last eight bits received through the SDI pin to  
update the switches. After entering daisy-chain mode, the first  
configuration is possible. All devices share the same  
and  
CS  
SCLK lines while the SDO pin of one device forms a connection  
to the SDI pin of the next device, creating a shift register. In  
daisy-chain mode, the SDO signal is an 8-cycle delayed version  
of the SDI signal (see Figure 47).  
eight bits sent out by the SDO pin are 0x00. When  
goes  
CS  
high, the internal shift register value does not reset back to 0.  
The ADGM1004 can only enter daisy-chain mode from  
addressable mode by sending the 16-bit SPI command, 0x2500.  
See Figure 47 for an example of this command. When the  
ADGM1004 receives this command, the SDO pin of the devices  
sends out the same command because the alignment bits at the  
SDO pin are 0x25. This command allows multiple daisy-  
chained devices to enter daisy-chain mode in a single SPI frame.  
A hardware reset is required to exit daisy-chain mode.  
An SCLK rising edge reads in data on the SDI pin while data is  
propagated out of the SDO pin on an SCLK falling edge. The  
expected number of SCLK cycles are a multiple of eight before  
the  
pin goes high. When this is not the case, the SPI  
CS  
interface sends the last eight bits received to the  
SWITCH_DATA register.  
DEVICE 1  
DEVICE 2  
ADGM1004  
ADGM1004  
RF2  
RF3  
RF4  
RF2  
RFC  
RFC  
RF3  
RF4  
SDO  
SDO  
SPI  
INTERFACE  
SPI  
INTERFACE  
SDI  
CS  
SCLK  
Figure 46. Two SPI Controlled ADGM1004 Switches Connected in Daisy-Chain Configuration  
1
2
3
4
5
6
7
8
9
10  
11  
12  
13  
14  
15  
16  
CS  
SCLK  
SDI  
0
0
1
0
0
1
0
1
0
0
0
0
0
0
0
0
SDO  
0
0
1
0
0
1
0
1
0
0
0
0
0
0
0
0
Figure 47. SPI Command to Enter Daisy-Chain Mode  
CS  
SDI  
COMMAND3[7:0] COMMAND2[7:0] COMMAND1[7:0] COMMAND0[7:0]  
DEVICE 1  
DEVICE 2  
DEVICE 3  
DEVICE 4  
SDO  
8’h00  
8’h00  
8’h00  
COMMAND3[7:0] COMMAND2[7:0] COMMAND1[7:0]  
SDO2  
SDO3  
8’h00  
8’h00  
COMMAND3[7:0] COMMAND2[7:0]  
8’h00 COMMAND3[7:0]  
NOTES  
1. SDO2 AND SDO3 ARE THE OUTPUT COMMANDS FROM DEVICE 2 AND DEVICE 3, RESPECTIVELY.  
Figure 48. Example of SPI Frame with Three ADGM1004 Switches Connected in Daisy-Chain Mode  
Rev. D | Page 24 of 32  
 
 
Data Sheet  
ADGM1004  
Hardware Reset  
INTERNAL OSCILLATOR FEEDTHROUGH  
MITIGATION  
The digital section of the ADGM1004 goes through an  
initialization phase during VDD power-up. To hardware reset the  
device, power cycle the VDD input. After power-up or a hardware  
reset, ensure that there is a minimum of 10 μs from the time of  
power-up or reset before any SPI command is issued. Ensure that  
In normal operation, the 80 V actuation voltage is supplied by  
the driver IC. Setting the EXTD_EN pin low enables the built in  
10 MHz oscillator. This setting enables the charge pump circuitry  
to generate the 80 V required for MEMS switch actuation. The  
internal oscillator is a source of noise that couples through to  
the RF ports. The magnitude of this feedthrough noise spur is  
specified in Table 1 and is typically −123 dBm or −146 dBm/Hz  
when one switch is on. To eliminate the internal oscillator  
feedthrough, set the EXTD_EN pin high to disable the internal  
oscillator and charge pump circuitry. When the internal oscillator  
and charge pump circuitry is disabled, the VCP pin must be  
driven with 80 V dc (VCPEXT) from an external voltage supply  
required for MEMS switch actuation, as shown in Table 5. The  
switch can still be controlled via the digital logic interface pins.  
V
V
DD does not drop out during the 10 μs initialization phase because  
DD dropout can result in incorrect operation of the ADGM1004.  
Internal Error Status  
When an internal error is detected in the device, the internal  
error is flagged by the INTERNAL_ERROR bits (Bits[7:6]) of  
the SWITCH_DATA register (Register 0x20), as shown in Table 9.  
An internal error results from an error in the configuration of  
the device at power up.  
INTERNAL OSCILLATOR FEEDTHROUGH  
The ADGM1004 has an internal oscillator running at a nominal  
10 MHz. This oscillator drives the charge pump circuitry that  
provides the actuation voltage for each switch gate electrode.  
Although this oscillator is low power, the 10 MHz signal is  
coupled to the switch and is considered a noise spur on the  
switch channels. The magnitude of this feedthrough noise spur is  
specified in Table 1 and is typically −123 dBm or −146 dBm/Hz  
when one switch is on. When all four switches are simultaneously  
on, the feedthrough goes up to −120 dBm. VDD level and  
temperature changes affect the frequency of the noise spur. For  
the maximum and minimum frequency range over temperature  
and voltage supply range, see Table 1.  
LOW POWER MODE  
Setting the EXTD_EN pin high shuts down the internal  
oscillator. The ADGM1004 enters a low power quiescent state,  
drawing only 50 μA maximum supply current.  
Rev. D | Page 25 of 32  
 
 
 
ADGM1004  
Data Sheet  
reference clock to the driver IC control circuit. Alternatively, set  
the EXTD_EN pin high and apply 80 V dc directly to the VCP pin  
to disable the internal oscillator and eliminate all oscillator  
feedthrough. The switches can then be controlled normally via  
the logic control interface, IN1 to IN4.  
TYPICAL OPERATING CIRCUIT  
Figure 49 shows the typical operating circuit for the ADGM1004  
as used in the EVAL-ADGM1004SDZ evaluation board. A 47 pF  
(100 V rated) external capacitor (CCP) is required on the VCP pin.  
This capacitor is a holding capacitor for the 80 V dc gate drive  
voltage.  
To avoid any floating nodes, connect a 10 MΩ shunt resistor to  
GND on all RFx pins (RF1 to RF4, and RFC), as shown in  
Figure 49. See the Floating Node section for more information.  
In the circuit shown in Figure 49, VDD is connected to 3.3 V. EP1  
connects to EP2 internally. Typically, one large GND pad on the  
PCB is used to short together EP1 and EP2. Figure 49 shows the  
ADGM1004 configured to use the internal oscillator as the  
3.3V  
0.1µF  
RF2 IN  
RF1 IN  
10M*  
10M*  
47pF  
24  
23  
22  
21  
20  
19  
18  
GND  
GND  
RFC  
17  
16  
IN1  
IN2  
IN3  
1
2
3
4
5
IN1  
IN2  
ADGM1004  
RFOUT  
15  
14  
13  
IN3  
IN4  
TOP VIEW  
10M*  
GND  
GND  
IN4  
GND  
6
7
10  
10M*  
11  
12  
8
9
10M*  
RF4 IN  
RF3 IN  
*10MRESISTORS ARE REQUIRED TO AVOID ANY FLOATING NODES. FOR MORE INFORMATION,  
REFER TO THE FLOATING NODES SECTION.  
Figure 49. Typical Operating Circuit  
Rev. D | Page 26 of 32  
 
 
Data Sheet  
ADGM1004  
APPLICATIONS INFORMATION  
SWITCHABLE RF ATTENUATOR  
RECONFIGURABLE RF FILTER  
RF attenuator networks are commonly used in RF instrumentation  
equipment, such as vector network analyzers, spectrum analyzers,  
and signal generators. Routing RF signals through an attenuator  
can enable the equipment to accept higher power signals and,  
therefore, increase the dynamic range of the instrument. In  
RF attenuation applications like the vector network analyzers,  
spectrum analyzers, and signal generators, maintaining the  
bandwidth of the signal after the signal passes through the  
network is critical. Any degradation of the signal reduces the  
performance of the equipment. Therefore, the RF characteristics  
of the switches used for routing are an integral part of the quality  
of an attenuator network.  
A reconfigurable RF filter is advantageous in many RF front-  
end applications. A reconfigurable RF filter provides more saved  
space. As space becomes more constrained in applications, the  
option to have an economical reconfigurable RF filter instead of  
individual frequency dependent filters is preferred.  
The ADGM1004 low flat insertion loss, wide RF bandwidth,  
low parasitic, low capacitance, and high linearity are required to  
turn on the lump components (capacitor and inductor), which  
make the MEMS switch suited for reconfigurable filter application.  
In applications such as wireless communications or mobile radios,  
the number of bands and/or modes constantly increases. A  
reconfigurable RF filter allows more bands and/or modes to be  
covered using the same components.  
The ADGM1004 MEMS switch with low flat insertion loss, wide  
RF bandwidth, and high reliability is suited for use as a switchable  
RF attenuator. The ADGM1004, as an SP4T switch, also brings  
added flexibility. Figure 50 shows an example attenuation  
network configuration using two ADGM1004 switches and  
three different attenuators. The fourth channel of the switches is  
used as a nonattenuated route in Figure 50.  
Figure 51 shows an example of a reconfigurable band-pass filter.  
The topology shown is of a generalized, two section, inductively  
coupled, single-ended band-pass filter, nominally centered on a  
400 MHz ultrahigh frequency (UHF) band. The MEMS switches  
are positioned in series with each shunt inductor.  
The function of the switches includes or omits a shunt inductor  
from the circuit. Changing the shunt inductor value affects the  
bandwidth and center frequency of the filter. Using inductance  
values from 15 nH to 30 nH significantly alters the bandwidth  
and center frequency, allowing the filter to dynamically configure  
to operate in the UHF bands or very high frequency (VHF)  
bands while preserving the 50 Ω match on the input and output  
ports. The low RON value and wide bandwidth of the MEMS  
switch makes the switch an ideal choice for this application. The  
low RON reduces the negative effect a series resistance has on the  
quality factor of the shunt inductor. The large bandwidth enables  
higher frequency band-pass filters.  
15dB  
10dB  
I/O  
I/O  
ADGM1004  
ADGM1004  
5dB  
Figure 50. Switching RF Attenuators Using Two ADGM1004 MEMS Switches  
22nH  
INPUT  
OUTPUT  
50  
50ꢀ  
13pF  
13pF  
24nH  
30nH  
18nH  
15nH  
15nH  
18nH  
30nH  
24nH  
GND  
Figure 51. Reconfigurable Band-Pass Filter Achieved Using Two ADGM1004 MEMS Switches  
Rev. D | Page 27 of 32  
 
 
 
 
 
ADGM1004  
Data Sheet  
CRITICAL OPERATIONAL REQUIREMENTS  
SYSTEM ERROR CONSIDERATIONS DUE TO  
ON-RESISTANCE DRIFT  
FLOATING NODE  
The ADGM1004 has no internal impedance to ground, and  
charges can develop on the switch terminals leading to unreliable  
switch behavior To mitigate this behavior, provide a discharge  
path to all switch nodes. Figure 53 to Figure 56 show examples  
of cases to avoid where floating nodes can occur when using the  
switch. Conditions to avoid include the following:  
The RON performance of the ADGM1004 is affected by part to  
part variation, channel to channel variation, cycle actuations,  
settling time post turn on, bias voltage, and temperature changes  
(see Figure 6 to Figure 13).  
In a 50 Ω system, the on-resistance drift over switch actuations  
(ΔRON) can introduce system inaccuracy. Figure 52 shows the  
ADGM1004 connected with the load in a 50 Ω system, where  
RS is the source impedance. TO calculate the system error  
caused by the ADGM1004 on-resistance drift, use the following  
equation:  
Leaving the RFx pins open circuit (see Figure 53).  
Connecting a series capacitor directly to the switch (see  
Figure 54).  
Connecting the RFx pin of two switches together directly  
or connecting the RFC pin to the RFx pin (see Figure 55  
and Figure 56).  
System Error (%) = ΔR/RLOAD  
where:  
RFx  
RFC  
OPEN CIRCUIT  
ΔR is the ADGM1004 on-resistance drift.  
FLOATING  
R
LOAD is the load impedance.  
The ADGM1004 on-resistance drift also affects insertion loss,  
which must be considered when using the device. To calculate  
the on-resistance impact on insertion loss, use the following  
equation:  
Figure 53. RFx Pins Left Open Circuit  
RFx  
RFC  
FLOATING  
Insertion Loss = 10log(1 + (ΔR/RLOAD))  
RS  
50  
R  
Figure 54. Series Capacitor Directly Connected to MEMS Switch  
RFC  
RFx  
RFx  
RFC  
R
50ꢀ  
LOAD  
VS  
FLOATING  
Figure 52. 50 Ω System Representation Where the ADGM1004 is Connected  
with the Load  
Figure 55. RFx Pins of Two MEMS Switches Directly Connected  
RFx  
RFC  
RFC  
RFx  
Table 7. System Error and Insertion Loss Error Due to  
ADGM1004 RON Drift  
FLOATING  
System  
Error (%)  
On-Resistance Drift  
Insertion Loss Error (dB)  
Figure 56. RFC Connected to RFx  
4.75  
5
9.5  
10  
0.39  
0.41  
Provide a discharge path to the switch nodes to avoid floating  
nodes. In a typical application, a 50 Ω termination connected to  
the switch provides this path. Driving switch nodes with a  
device of adequate impedance (<10 M) provides a discharge  
path. If there is no discharge path in the application circuit, add  
a 10 MΩ shunt resistor or inductor on the source RFx pin of the  
MEMS switch to provide the discharge path. Note that the  
shunt resistors introduce leakage. Figure 57 shows an example  
of a configuration providing a discharge path.  
RFx  
RFC  
OR  
OR  
Figure 57. Switch Configuration Providing a Discharge Path  
Rev. D | Page 28 of 32  
 
 
 
 
 
 
 
 
 
Data Sheet  
ADGM1004  
HANDLING PRECAUTIONS  
Electrical Overstress (EOS) Precautions  
Figure 58 and Figure 59 illustrate typical cascaded switch use cases  
and the corresponding schemes to mitigate floating node risks.  
The ADGM1004 is susceptible to EOS. Therefore, take the  
following precautions:  
RF1  
RF1  
RF2  
RF3  
RF4  
RF2  
ADGM1004 RF3  
RF4  
RFC  
RFC  
ADGM1004  
The ADGM1004 is an ESD sensitive device. Ensure to take  
all of the normal handling precautions, including working  
only on static dissipative surfaces, wearing wrist straps or  
other ESD control devices, and storing unused devices in  
conductive foam.  
Avoid running measurement instruments, such as digital  
multimeters (DMMs), in autorange modes. Some  
instruments generate large transient compliance voltages  
when switching between ranges.  
Figure 58. Two ADGM1004 Devices Connected in Path Selection  
Configuration with 10 MShunt Resistors to Mitigate Floating Nodes  
RF1  
RF2  
RFC  
ADGM1004  
RF3  
RF1  
RF2  
RF4  
RFC  
Use the highest practical DMM range setting (the lowest  
resolution) for resistance measurements to minimize  
compliance voltages, particularly during switching.  
Discharge coaxial cables before connecting directly to the  
switch. Note that coaxial cables can store charge and lead  
to EOS when directly connected to the switch.  
Avoid connecting large capacitive terminations directly to  
the switch, as shown in Figure 61. A shunt capacitor can  
store a charge that potentially leads to hot switching events  
when the switch opens or closes, affecting the lifetime of  
the switch.  
ADGM1004  
RF3  
RF4  
RF1  
RF2  
RFC  
ADGM1004  
RF3  
RF4  
Figure 59. Three ADGM1004 Devices Connected in Fanout Configuration  
with 10 MShunt Resistors to Mitigate Floating Nodes  
Avoid connecting shunt capacitors directly to the switch. A  
capacitor can store a charge and potentially lead to hot switching  
events when the switch opens or closes if there are no alternative  
discharge paths. These events affect the cycle lifetime of the switch.  
RFx  
RFC  
CUMULATIVE ON SWITCH LIFETIME  
Leaving the switch in an on state for a long period affects the  
lifetime of the switch because of mechanical degradation effects.  
These effects can result in the switch failing to turn off. Figure 60  
shows a failure rate at 50°C where the mean time to failure is  
7.2 years (2628 days), resulting in 50% of the sample lot failing  
at this point.  
Figure 61. Avoid Having a Large Capacitor Directly Connected to the  
MEMS Switch  
Temperatures above 50°C further reduce the switch lifetime.  
The cumulative on switch lifetime specification is also duty cycle  
dependent. If the user operates the MEMS switch with a duty  
cycle of less than 50% the lifetime of the MEMS switch improves.  
99  
V
= 3.3V  
DD  
90  
70  
30  
10  
1
10  
100  
1,000  
10,000  
100,000  
CONTINUOUSLY ON TIME (DAYS)  
Figure 60. Cumulative On Switch Lifetime at 50°C, VDD = 3.3 V,  
Sample Size 31 Parts  
Rev. D | Page 29 of 32  
 
 
 
 
 
 
ADGM1004  
Data Sheet  
Mechanical Shock Precautions  
Figure 62 shows examples of loose device handling situations to  
avoid for risk of mechanical shock and ESD events.  
The ADGM1004 passes extensive mechanical shock  
qualification tests, as described in Table 8. These tests validate  
the robustness of the device when exposed to normal  
mechanical shocks.  
NOT RECOMMENDED  
Table 8. Mechanical Qualification Summary  
Parameter  
Qualification  
Mechanical Shock  
Random Drop  
Powered (PMS) IEC 60068-2-27  
AEC-Q100 Test G5, five drops from  
0.6 m  
DEVICES STORED BULK  
IN BINS  
DEVICES DUMPED OUT  
ON BENCHTOP  
Vibration Testing  
MIL-STD-883, M2007.3, Condition B,  
20 Hz to 2000 Hz at 50 g  
Group D, Sub 4, MIL-  
STD-883, M5005  
Mechanical shock, 1500 g, 0.5 ms;  
vibration 50 g sine sweep, 20 Hz to  
2000 Hz; acceleration 30,000 g  
DEVICE DROPPED  
Do not use the ADGM1004 if dropped. Ensure minimal  
mechanical shocks during the handling and manufacturing of  
the device.  
Figure 62. Situations to Avoid During Handling  
Rev. D | Page 30 of 32  
 
 
Data Sheet  
ADGM1004  
REGISTER DETAILS  
SWITCH DATA REGISTER  
Address: 0x20, Reset: 0x00, Name: SWITCH_DATA  
The switch data register controls the status of the four ADGM1004 switches.  
Table 9. Bit Descriptions for SWITCH_DATA  
Bits  
Bit Name  
Description  
Reset  
Access  
[7:6]  
INTERNAL_ERROR  
Internal Error Detection. These bits determine if an internal error has occurred.  
00: no error detected.  
01: error detected.  
0x0  
R
10: error detected.  
11: error detected.  
[5:4]  
3
RESERVED  
SW4_EN  
Reserved. These bits are reserved. Set these bits to 0.  
Enable for Switch 4.  
0x0  
0x0  
R
R/W  
0: Switch 4 open.  
1: Switch 4 closed.  
2
1
0
SW3_EN  
SW2_EN  
SW1_EN  
Enable for Switch 3.  
0: Switch 3 open.  
1: Switch 3 closed.  
0x0  
0x0  
0x0  
R/W  
R/W  
R/W  
Enable for Switch 2.  
0: 00: Switch 2 open.  
1: Switch 2 closed.  
Enable for Switch 1.  
0: Switch 1 open.  
1: Switch 1 closed.  
Rev. D | Page 31 of 32  
 
 
 
ADGM1004  
Data Sheet  
OUTLINE DIMENSIONS  
DETAIL A  
(JEDEC 95)  
0.33 NOM  
1.30 NOM  
5.10  
5.00  
4.90  
0.16 NOM  
1.47 NOM  
PIN 1  
INDICATOR  
PIN 1  
IONS  
INDIC ATOR AREA OPT  
(SEE DETAIL A)  
0.50  
BSC  
18  
24  
17  
1
4.10  
4.00  
3.90  
*
*
EXPOSED  
PA D  
EXPOSED  
PA D  
2.15 NOM  
5
13  
12  
6
0.65  
0.55  
0.45  
BOTTOM VIEW  
TOP VIEW  
SIDE VIEW  
1.50  
1.45  
1.40  
*
0.05 MAX  
0.02 NOM  
FOR PROPER CONNECTION OF  
THE EXPOSED PADS, REFER TO  
THE PIN CONFIGURATION AND  
FUNCTION DESCRIPTIONS  
COPLANARITY  
0.08  
SEATING  
PLANE  
SECTION OF THIS DATA SHEET.  
0.15 REF  
0.30  
0.25  
0.18  
Figure 63. 24-Lead Lead Frame Chip Scale Package [LFCSP]  
5 mm × 4 mm Body, and 1.45 mm Package Height  
(CP-24-4)  
Dimensions shown in millimeters  
ORDERING GUIDE  
Model1  
Temperature Range  
0°C to 85°C  
0°C to 85°C  
Package Description  
Package Option  
CP-24-4  
CP-24-4  
ADGM1004JCPZ-R2  
ADGM1004JCPZ-RL7  
EVAL-ADGM1004SDZ  
24-Lead Lead Frame Chip Scale Package [LFCSP]  
24-Lead Lead Frame Chip Scale Package [LFCSP]  
Evaluation Board  
1 Z = RoHS Compliant Part.  
©2017–2019 Analog Devices, Inc. All rights reserved. Trademarks and  
registered trademarks are the property of their respective owners.  
D15173-0-11/19(D)  
Rev. D | Page 32 of 32  
 
 

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