MAX14760ETA+ [MAXIM]
Above- and Below-the-Rails Low-Leakage Analog Switches;
| 型号： | MAX14760ETA+ |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | Above- and Below-the-Rails Low-Leakage Analog Switches |
| 文件： | 总13页 (文件大小：1686K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
19-6052; Rev 1; 8/12
E V A L U A T I O N K I T A V A I L A B L E
General Description
Benefits and Features
The MAX14760/MAX14762/MAX14764 analog switches
are capable of passing bipolar signals that are beyond
their supply rails. These devices operate from a single
+3.0V to +5.5V supply, and support signals in the -25V
to +25V range.
S Simplify Power-Supply Requirements
3.0V to 5.5V Supply Range
-25V to +25V Signal Range
S High Performance
Q10nA (max) On-Leakage Current (MAX14760/
MAX14762)
20I (max) On-Resistance
Low On-Resistance Flatness, 58mI (typ)
Thermal Shutdown Protection
-40NC to +85NC Operating Temperature Range
High Bandwidth:115MHz (typ)
The MAX14760 is a single-pole/single-throw (SPST) ana-
log switch, while the MAX14762 is a dual-SPST analog
switch. The MAX14764 is a single-pole/double-throw
(SPDT) analog switch.
The MAX14760/MAX14762/MAX14764 feature 20I(max)
on-resistance with a Q10nA (max) on-leakage current for
MAX14760/MAX14762.
S Save Space on Board
Small 8-Pin and 10-Pin TDFN Packages
The MAX14760/MAX14764 are available in 8-pin (3mm x
3mm) TDFN packages. The MAX14762 is available in a
10-pin (3mm x 3mm) TDFN package. These devices are
specified over the -40NC to +85NC extended operating
temperature range.
Applications
Industrial Measurement Systems
Instrumentation Systems
Opto-Relay Replacement
Medical Systems
Ordering Information/Selector Guide appears at end of data
sheet.
For related parts and recommended products to use with this part, refer
to www.maxim-ic.com/MAX14760.related.
ATE Systems
Audio Signal Routing and Switching
Functional Diagrams/Truth Tables
V
V
V
CC
CC
CC
MAX14760
MAX14762
MAX14764
V
V
N
V
V
B
V
V
N
P
P
N
P
SUPPLY
GENERATION
SUPPLY
GENERATION
SUPPLY
GENERATION
A
B1
B2
A1
A1
COM
EN
EN1
A2
SEL
A2
GND
EN2
GND
GND
EN
A
EN1
A1
EN2
0
A2
SEL
0
A1
A2
OPEN
CLOSED
OPEN
OPEN
CLOSED
OPEN
OPEN
0
1
0
1
CLOSED
1
CLOSED
1
CLOSED
1
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
MAX14760/MAX14762/MAX14764
Above- and Below-the-Rails
Low-Leakage Analog Switches
ABSOLUTE MAXIMUM RATINGS
(All voltages referenced to GND, unless otherwise noted.)
..........................................................................-0.3V to +6V
Continuous Power Dissipation (T = +70NC)
8-Pin TDFN Package (derate 24.4mW/NC
A
V
CC
above +70NC)..........................................................1951.2mW
10-Pin TDFN Package (derate 24.4mW/NC
EN, EN1, EN2, SEL ................................-0.3V to +(V
+ 0.3V)
CC
A, A1, A2, B, B1, B2, COM ................... (V - 0.3V) to Lesser of
N
above +70NC)..........................................................1951.2mW
Operating Temperature Range.......................... -40NC to +85NC
Storage Temperature Range............................ -65NC to +160NC
Lead Temperature (soldering, 10s) ................................+300NC
Soldering Temperature (reflow) ......................................+260NC
(V + 0.3V) or (V + 52V)
P
N
V ................................ -0.3V to Lesser of (+52V) or (V + 70V)
P
N
V ........................Greater of (V
- 40V) or (V - 70V) to +0.3V
N
CC
P
V
to V
-0.3V to 70V
...................................................................
P
N
Continuous Current ......................................................... Q25mA
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional opera-
tion of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect device reliability.
PACKAGE THERMAL CHARACTERISTICS (Note 1)
8 TDFN
10 TDFN
Junction-to-Ambient Thermal Resistance (q )...........41°C/W
Junction-to-Ambient Thermal Resistance (q )...........41°C/W
JA
JA
Junction-to-Case Thermal Resistance (q )..................8°C/W
Junction-to-Case Thermal Resistance (q )..................9°C/W
JC
JC
Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-
layer board. For detailed information on package thermal considerations, refer to www.maxim-ic.com/thermal-tutorial.
ELECTRICAL CHARACTERISTICS
(V
= 3.0V to 5.5V, T = -40NC to +85NC, unless otherwise noted. Typical values are at V
= 5V, and T = +25NC.) (Note 2)
CC
A
CC A
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
DC CHARACTERISTICS
Power Supply Range
V
3.0
-25
5.5
V
CC
Continuous Current Through
Switch
I
+25
mA
A
V
V
V
V
= V
4.1
4.1
2.5
2.5
10
10
6
EN_
EN_
EN_
EN_
CC
V
V
P4.7V
CC
= V /2
CC
Supply Current
I
mA
V
CC
= V
CC
> 4.7V
CC
= V /2
6
CC
V
V
COM,
Analog Signal Range
Switch open or closed
or I = Q25mA, V = Q25V
-25
+25
20
V
A_, B_
On-Resistance
R
I
8
I
ON
COM
B_
A_
On-Resistance Flatness
A, A1, A2 Off-Leakage Current
DR
-25V < V < +25V, I
or I = Q25mA
58
mI
nA
ON
A_
COM
B_
I
V
V
= +25V, V
or V = 0V, Figure 1
-30
-10
+30
+10
A_(OFF)
A_
COM
B_
or V = 15V, V = 0V, Figure 1
COM
B_
A_
(MAX14764)
,
COM(OFF)
COM, B, B1, B2 Off-Leakage
Current
I
nA
I
B_(OFF)
V
= 15V, V = 0V, Figure 1 (MAX14760/
B_ A_
-10
+10
MAX14762)
2
MAX14760/MAX14762/MAX14764
Above- and Below-the-Rails
Low-Leakage Analog Switches
ELECTRICAL CHARACTERISTICS (continued)
(V
= 3.0V to 5.5V, T = -40NC to +85NC, unless otherwise noted. Typical values are at V
= 5V, and T = +25NC.) (Note 2)
CC
A
CC A
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
V
= Q25V, B/COM is unconnected,
A_
-10
+10
Figure 1 (MAX14760/MAX14762)
On-Leakage Current
I
nA
ON
V
= Q25V, B/COM is unconnected,
A_
-30
+30
Figure 1 (MAX14764)
DIGITAL LOGIC
V
V
V
V
V
V
V
V
= 3.0V
= 3.6V
= 4.5V
= 5.5V
= 3.0V
= 3.6V
= 4.5V
= 5.5V
0.7
0.7
0.8
0.8
CC
CC
CC
CC
CC
CC
CC
CC
Input-Voltage Logic-Low
Input-Voltage Logic-High
V
V
IL
1.7
1.9
2.0
2.1
-1
V
I
V
IH
Input Current
+1
FA
L
AC CHARACTERISTICS
Power-On Time
t
C
= C = 100nF (Note 3)
50
ms
PWRON
VP
VN
V
= Q10V, R = 10kI, Figure 2
L
A_
100
200
Fs
(MAX14760/MAX14762)
Enable Turn-On Time
t
ON
V
= Q10V, R = 10kI, Figure 2
A_
L
1.04
110
740
1.6
ms
Fs
Fs
(MAX14764)
Enable Turn-Off Time
t
(Figure 2)
400
OFF
V
= 1V
, R = 10kI,
A_
RMS L
Break-Before-Make Interval
t
BBM
Figure 3 (MAX14764)
V
= 1V , f = 100kHz, R = 50I,
A_
RMS
L
Off-Isolation
Crosstalk
V
-77
-92
dB
dB
ISO
C = 15pF, Figure 4
L
R
= R = 50I, f = 100kHz, V
= 1V
,
S
L
COM
RMS
V
CT
Figure 5 (MAX14764)
-3dB Bandwidth
BW
R
R
= 50I, R = 1kI, V = 1V , Figure 6
115
MHz
%
S
L
A_
P-P
Total Harmonic Distortion
THD+N
Q
= R = 1kI, f = 20Hz to 20kHz
0.005
S
L
Charge Injection
V
= GND, C = 1nF, Figure 7
19
32
pC
pF
A_
L
Input Capacitance
C
At A, A1, A2, B, B1, B2, and COM pins
IN
THERMAL PROTECTION
Thermal Shutdown Temperature
t
+154
24
NC
NC
HYST
Shutdown Temperature Hysteresis
ESD PROTECTION
All Pins
t
SHUT
Human Body Model
Q2
kV
Note 2: All devices are 100% production tested at T = +25°C. Specifications over operating temperature range are guaranteed
A
by design.
Note 3: The power-on time is defined as the settling time for the charge pump’s output to reach steady-state value within 1%.
3
MAX14760/MAX14762/MAX14764
Above- and Below-the-Rails
Low-Leakage Analog Switches
Test Circuits/Timing Diagrams
+5V
+5V
1µF
1µF
V
V
CC
CC
MAX14760
MAX14762
MAX14764
MAX14760
MAX14762
MAX14764
A_
B_/COM
A_
B_/COM
A
A
A
UNCONNECTED
EN_/SEL
EN_/SEL
SWITCH
OPEN
GND
SWITCH
CLOSED
GND
OFF-LEAKAGE CURRENT
ON-LEAKAGE CURRENT
Figure 1. Leakage Current Measurement
+5V
1µF
V
CC
LOGIC
INPUT
50%
50%
MAX14760
MAX14762
MAX14764
0
t
t
OFF
ON
+10V
A_
B_/COM
V
OUT
SWITCH
OUTPUT
0.9 x V
OUT
(V
OUT
)
R
L
0.1 x V
OUT
EN_/SEL
LOGIC
INPUT
GND
Figure 2. Switching Time
4
MAX14760/MAX14762/MAX14764
Above- and Below-the-Rails
Low-Leakage Analog Switches
Test Circuits/Timing Diagrams (continued)
+5V
1µF
+5V
V
CC
LOGIC
50%
INPUT
MAX14764
0V
A1
+10V
COM
A2
V
OUT
C
L
SEL
R
L
10kI
SWITCH
OUTPUT
0.8 x V
OUT
LOGIC
INPUT
GND
(V
OUT
)
t
BBM
C
INCLUDES FIXTURE AND STRAY CAPACITANCE.
L
Figure 3. Break-Before-Make
+5V
1µF
VB_/COM
OFF-ISOLATION = 20LOG
V
CC
V
A_
MAX14760
MAX14762
MAX14764
A_
B_/COM
ANALYZER
C
L
R
L
SIGNAL
GENERATOR
EN_/SEL
SWITCH
OPEN
GND
Figure 4. Off-Isolation
5
MAX14760/MAX14762/MAX14764
Above- and Below-the-Rails
Low-Leakage Analog Switches
Test Circuits/Timing Diagrams (continued)
+5V
1µF
V
CC
V
COM
CROSSTALK = 20LOG
V
A2
MAX14764
A2
A1
ANALYZER
C
L
R
L
COM
SIGNAL
GENERATOR
GND
SEL
50I
Figure 5. Crosstalk
+5V
1µF
V
OUT
FREQUENCY RESPONSE = 20LOG
V
CC
NETWORK
ANALYZER
V
IN
R
R
S
S
V
IN
A_
MAX14760
MAX14762
MAX14764
+5V
EN_/SEL
V
OUT
MEAS
REF
B_/COM
R
R
L
L
GND
Figure 6. Insertion Loss
6
MAX14760/MAX14762/MAX14764
Above- and Below-the-Rails
Low-Leakage Analog Switches
Test Circuits/Timing Diagrams (continued)
+5V
1µF
V
CC
+5V
LOGIC
INPUT
OFF
ON
OFF
MAX14760
MAX14762
MAX14764
0V
A_
V
B_/COM
OUT
SWITCH
OUTPUT
DV
OUT
C = 1nF
L
EN_/SEL
(V
)
OUT
Q = C × DV
L
OUT
LOGIC
INPUT
GND
Figure 7. Charge Injection
Typical Operating Characteristics
(T = +25°C, unless otherwise noted.)
A
ON-RESISTANCE vs. V
ON-RESISTANCE vs. V
ON-RESISTANCE vs. TEMPERATURE
B_ /COM
B_ /COM
20
16
12
8
20
16
12
8
20
16
12
8
V
= 3.3V, I
= 10mA
V
= 5V, I
= 10mA
V
= 5V, I
= 10mA
CC
B_ /COM
CC
B_ /COM
CC
B_ /COM
T = +85°C
A
T = +25°C
A
4
4
4
T = -40°C
A
0
0
0
-25 -20 -15 -10 -5
0
5
10 15 20 25
-25 -20 -15 -10 -5
0
5
10 15 20 25
-25 -20 -15 -10 -5
0
5
10 15 20 25
V
(V)
V
(V)
V
(V)
B_ /COM
B_ /COM
B_ /COM
7
MAX14760/MAX14762/MAX14764
Above- and Below-the-Rails
Low-Leakage Analog Switches
Typical Operating Characteristics (continued)
(T = +25°C, unless otherwise noted.)
A
CHARGE INJECTION vs. V
LEAKAGE CURRENT vs. TEMPERATURE
B_ /COM
50
40
30
20
10
0
10
8
MAX14762
MAX14762, V OR V = +25V
B_
A_
T = +85°C
A
6
T = +25°C
A
4
ON-LEAKAGE
2
OFF-LEAKAGE
T = -40°C
A
0
-25 -20 -15 -10 -5
V
0
5
10 15 20 25
-40
-15
10
35
60
85
(V)
TEMPERATURE (°C)
B_ /COM
SUPPLY CURRENT vs. TEMPERATURE
CROSSTALK vs. FREQUENCY
5.0
4.0
3.0
2.0
1.0
0
0
-20
MAX14762
MAX14762, V = V = V = 5V
EN1
EN2
CC
-40
-60
-80
-100
-120
-40
-15
10
35
60
85
0.01
0.1
1
10
100
TEMPERATURE (°C)
FREQUENCY (MHz)
OFF-ISOLATION vs. FREQUENCY
0
MAX14762
-20
-40
-60
-80
-100
0.01
0.1
1
10
100
FREQUENCY (MHz)
8
MAX14760/MAX14762/MAX14764
Above- and Below-the-Rails
Low-Leakage Analog Switches
Typical Operating Characteristics (continued)
(T = +25°C, unless otherwise noted.)
A
TOTAL HARMONIC DISTORTION PLUS
INSERTION LOSS vs. FREQUENCY
NOISE vs. FREQUENCY
0
0.020
0.015
0.010
0.005
0
MAX14762, R = 1kI
L
-4
-8
-12
-16
-20
0.01
0.1
1
10
100
0.01
0.1
1
10
100
FREQUENCY (MHz)
FREQUENCY (kHz)
TURN-ON/OFF TIME vs. V
PSRR vs. FREQUENCY
B_ /COM
120
100
80
60
40
20
0
0
-20
t
MAX14762
ON
-40
t
OFF
-60
-80
-100
-25 -20 -15 -10 -5
V
0
5
10 15 20 25
0.01
0.1
1
10
100
(V)
FREQUENCY (kHz)
B_ /COM
MAX14762 CHARGE PUMP NOISE
(SWITCH DISABLED)
MAX14762 CHARGE PUMP NOISE
(SWITCH ENABLED)
0
-20
0
-20
-40
-40
-60
-60
-80
-80
-100
-120
-100
-120
10 20 30 40 50 60 70 80 90 100
FREQUENCY (MHz)
10 20 30 40 50 60 70 80 90 100
FREQUENCY (MHz)
9
MAX14760/MAX14762/MAX14764
Above- and Below-the-Rails
Low-Leakage Analog Switches
Pin Configurations
TOP VIEW
EN1 EN2 A1
V
A2
6
EN
N.C.
V
A
SEL
A1
V
A2
P
P
P
8
7
6
5
8
7
6
5
10
9
8
7
MAX14760
MAX14764
MAX14762
*EP
*EP
*EP
+
+
+
1
2
3
4
1
2
3
4
1
V
2
3
4
V
5
V
GND
V
B
V
CC
GND
V
N
COM
GND B1
B2
CC
N
CC
N
TDFN
*CONNECT EXPOSED PAD (EP) TO V .
N
Pin Description
PIN
NAME
FUNCTION
Positive-Supply Voltage Input. Bypass V to GND with a 1μF ceramic
MAX14760 MAX14762 MAX14764
CC
1
2
3
1
2
4
1
2
3
V
CC
capacitor placed as close as possible to the devic
e.
GND
Ground
Negative Voltage Output. Bypass V to GND with a 0.1μF 50V ceramic
N
capacitor placed as close as possible to the device.
V
N
4
—
5
—
—
—
—
4
B
Analog Switch Common Terminal
COM
A
Analog Switch Common Terminal
—
Analog Switch Normally Open Terminal
Positive Voltage Output. Bypass V to GND with a 0.1μF 50V ceramic capacitor
P
placed as close as possible to the device.
6
7
7
—
—
8
6
—
—
7
V
P
N.C.
EN
No Connection. Leave unconnected.
Switch Control Input. Drive EN high to close the switch or drive EN low to open
the switch.
8
—
A1
Analog Switch 1 Normally Closed Terminal
10
MAX14760/MAX14762/MAX14764
Above- and Below-the-Rails
Low-Leakage Analog Switches
Pin Description (continued)
PIN
NAME
FUNCTION
Analog Switch 1 Common Terminal
MAX14760 MAX14762 MAX14764
—
—
—
3
6
5
—
5
B1
A2
B2
Analog Switch 2 Normally Open Terminal
Analog Switch 2 Common Terminal
—
Switch 1 Control Input. Drive EN1 high to open switch 1 or drive EN1 low to
close switch 1.
—
—
—
—
10
9
—
—
8
EN1
EN2
SEL
EP
Switch 2 Control Input. Drive EN2 high to close switch 2 or drive EN2 low to
open switch 2.
Switch Control Input. Drive SEL low to connect the COM terminal to A1 or drive
SEL high to connect the COM terminal to A2.
—
—
Exposed Pad. Connect EP to V ; EP is not intended as an electrical
N
connection.
—
Bypass Capacitors
Bias-stabilizing capacitors are required on the V and V
pins. 1FF ceramic capacitors are suggested for effective
Detailed Description
P
N
The MAX14760/MAX14762/MAX14764 analog switches
are capable of handling signals above and below their
rails. These devices operate from a single +3.0V to +5.5V
supply and support signals in the -25V to +25V range.
operation. V and V are not intended as a power supply
P
N
for other circuitry.
Applications Information
Integrated Bias Generation
The MAX14760/MAX14762/MAX14764 contain a total of
three charge pumps to generate bias voltages for the
internal switches: a 5V regulated charge pump, a posi-
tive high-voltage (+35V) charge pump, and a negative
Nonpowered Condition
The MAX14760/MAX14762/MAX14764 can tolerate input
voltages on the A, B, or COM pins in the 25V range when
it is not powered. When V
= 0V, the DC input leakage
DD
high-voltage (-27V) charge pump. When V
is above
DD
current into the A, B, or COM pins is typically below 1μA.
Some devices can have a larger leakage current up to the
mA range due to technology spread.
4.7V (typ), the 5V regulated charge pump is bypassed,
and V provides the input for the high-voltage charge
DD
pumps, reducing overall supply current. An external
With V
not powered, internal diodes between the analog
DD
0.1FF capacitor is required for each high-voltage charge
pins and the V and V will charge up the external capaci-
P
N
pump between V /V and GND.
P
N
tors on V and V when positive and/or negative voltages
P
N
Analog Signal Range
are applied to these pins. This causes transient input cur-
rent flow.
The devices switch signals in the range from -25V to
+25V that are above and below their rails. The on-resis-
tance for these devices exhibits a high degree of flatness
(58mI) over the whole input voltage range of -25V to
+25V. The analog switches allow bidirectional current
flow, so A, A1, A2, B, B1, B2, and COM, can be used as
either inputs or outputs.
Large dv/dt on the inputs causes large capacitive charg-
ing currents, which have to be limited to 300mA to avoid
destroying the internal diodes. Hence, the 100nF capaci-
tors on V and V , the dv/dt must be limited to 3V/μs. Once
P
N
the capacitors reach their final voltage the input current
decays to the leakage current levels mentioned above.
11
MAX14760/MAX14762/MAX14764
Above- and Below-the-Rails
Low-Leakage Analog Switches
Ordering Information/Selector Guide
PART
MAX14760ETA+
MAX14762ETB+
MAX14764ETA+
TEMP RANGE
-40NC to +85NC
-40NC to +85NC
-40NC to +85NC
PIN-PACKAGE
8 TDFN-EP*
FUNCTION
1 x SPST
2 x SPST
1 x SPDT
R
(MAX) (I)
ON
20
20
20
10 TDFN-EP*
8 TDFN-EP*
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.
Package Information
Chip Information
For the latest package outline information and land patterns
(footprints), go to www.maxim-ic.com/packages. Note that a
“+”, “#”, or “-” in the package code indicates RoHS status only.
Package drawings may show a different suffix character, but
the drawing pertains to the package regardless of RoHS status.
PROCESS: BiCMOS
PACKAGE
TYPE
PACKAGE
CODE
OUTLINE
NO.
LAND
PATTERN NO
8 TDFN
T833+2
21-0137
21-0137
90-0059
90-0003
10 TDFN
T1033+1
12
MAX14760/MAX14762/MAX14764
Above- and Below-the-Rails
Low-Leakage Analog Switches
Revision History
REVISION
NUMBER
REVISION
DATE
PAGES
DESCRIPTION
CHANGED
0
9/11
Initial release
—
Updated Electrical Characteristics table, updated Figures 1–7, added
TOCs 13 and 14, updated Pin Configuration table, added Integrated Bias
Generation and Nonpowered Condition sections
1
8/12
3–7, 9–11
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied.
Maxim reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and max limits) shown in the Electrical
Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance.
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13
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2012 Maxim Integrated Products
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