RFSA3623SQ [RFMD]
5MHz to 6000MHz, Digital Step Attenuator;
| 型号： | RFSA3623SQ |
| 厂家： | 
RF MICRO DEVICES |
| 描述： | 5MHz to 6000MHz, Digital Step Attenuator |
| 文件： | 总16页 (文件大小：1859K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
RFSA3623
RFSA3623
RFSA3623
5MHz to 6000MHz, Digital Step Attenuator
Package: QFN, 16-pin,
The RFMD’s RFSA3623 is a 6-bit digital step attenuator
(DSA) that features high linearity over the entire 15.75dB gain
control range with 0.25dB steps. The RFSA3623 uses serial
control interface. The RFSA3623 has a low insertion loss of
1.4dB at 2GHz. Patent pending circuit architecture provides
overshoot-free transient switching performance. External
address pins allow up to eight DSAs to be controlled on a
single bus. The RFSA3623 is available in a 3mm x 3mm QFN
package.
3.0mm x 3.0mm x 0.85mm
Features
■
■
■
6-Bit, 15.75dB Range, 0.25dB Step
Patent Pending Circuit Architecture
Overshoot-free Transient
Switching Performance
■
Frequency Range 5MHz to
6000MHz
■
■
■
High Linearity, IIP3 >55dBm
Serial Control Interface
Fast Switching Speed, <120nsec
Typical
■
Serial Addressable Supports Up to
Eight Addresses
16
15
14
13
■
■
Single Supply 3V to 5V Operation
LE
VDD
A0
1
2
3
4
12
11
10
9
RF Pins Have No DC Voltage, Can
be DC Grounded Externally
LOGIC CONTROL
6-BIT DSA
GND
GND
RFOUT
■
Power-up Default Setting Is
Maximum Attenuation
GND
RFIN
Applications
■
■
■
■
2G through 4G Base Stations
5
6
7
8
Point-to-Point
WiMax/WiFi
Test Equipment
Functional Block Diagram
Ordering Information
RFSA3623SQ
Sample bag with 25 pieces
RFSA3623SR
7" Reel with 100 pieces
RFSA3623TR7
RFSA3623PCK-410
7" Reel with 2500 pieces
5MHz to 6000MHz PCBA with 5-piece sample bag
RF Micro Devices Inc. 7628 Thorndike Road, Greensboro, NC 27409-9421
DS150128
For sales or technical support, contact RFMD at +1.336.678.5570 or customerservice@rfmd.com.
RF MICRO DEVICES® and RFMD® are trademarks of RFMD, LLC. BLUETOOTH is a trademark owned by Bluetooth SIG, Inc., U.S.A. and licensed for use by RFMD. All other trade names,
trademarks, and registered trademarks are the property of their respective owners. ©2013, RF Micro Devices, Inc.
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RFSA3623
Absolute Maximum Ratings
Caution! ESD sensitive device.
Parameter
Rating
Unit
-0.5 to +6.0
V
Supply Voltage (VDD
)
All Other DC and Logic Pins (Supply Voltage Must
Be Applied Prior to Any Other Pin Voltages)
V
-0.5 to VDD
+30
RFMD Green: RoHS status based on EU
Directive 2011/65/EU (at time of this
document revision), halogen free per IEC
61249-2-21, < 1000ppm each of
antimony trioxide in polymeric materials
and red phosphorus as a flame retardant,
and <2% antimony in solder.
Maximum Input Power at RFIN Pin at +85° Case
Temperature
dBm
dBm
Maximum Input Power at RFOUT Pin at +85° Case
Temperature
+27
Storage Temperature Range
-40 to +150
1000
°C
V
Exceeding any one or a combination of the Absolute
Maximum Rating conditions may cause permanent
damage to the device. Extended application of Absolute
Maximum Rating conditions to the device may reduce
device reliability. Specified typical performance or
functional operation of the device under Absolute
Maximum Rating conditions is not implied.
ESD Rating - Human Body Model (HBM)
Moisture Sensitivity Level
MSL1
Recommended Operating Condition
Specification
Parameter
Unit
Max
Min
-40
Typ
Operating Temperature Range
+105
°C
(RF Input power handling de-rates above 85°C)
Operating Junction Temperature
Supply Voltage
125
5.5
°C
V
2.7
Nominal Operating Parameters
Specification
Parameter
Unit
Condition
Min
Typ
Max
General Performance
Supply Current
Steady state operation, current draw during attenuation state transitions is
higher.
180
55
µA
Thermal Resistance
RF Input Power at RFIN Pin
RF Input Power at RFOUT Pin
RF Performance
Frequency Range
°C/W At maximum attenuation state with RF power applied to the RFIN pin.
27
20
dBm
Continuous operation at +85°C case temperature
dBm
5
6000
MHz
Insertion Loss
1.4
dB
dB
2000MHz, 0dB attenuation
0.25dB step size
Attenuation Range
Absolute Attenuation Error
Input IP3
15.75
±(0.2 + 4%)
dB
55
30
15
50
dBm
dBm
dB
Input P0.1dB
Return Loss
Ω
Input and Output Impedance
RF Micro Devices Inc. 7628 Thorndike Road, Greensboro, NC 27409-9421
DS150128
For sales or technical support, contact RFMD at +1.336.678.5570 or customerservice@rfmd.com.
RF MICRO DEVICES® and RFMD® are trademarks of RFMD, LLC. BLUETOOTH is a trademark owned by Bluetooth SIG, Inc., U.S.A. and licensed for use by RFMD. All other trade names,
trademarks, and registered trademarks are the property of their respective owners. ©2013, RF Micro Devices, Inc.
2 of 16
RFSA3623
Specification
Parameter
Unit
Condition
Min
Typ
Max
RF Performance – Continued
Switching Speed
120
2
nsec
Deg
50% control to 10%/90% RF
2000MHz
Successive Step Phase Delta
Control
Digital Logic Low
Digital Logic High
0.63
V
V
1.17
Note: Typical performance at these conditions: Temp = +25°C, 2000MHz, 5V Supply Voltage
RF Micro Devices Inc. 7628 Thorndike Road, Greensboro, NC 27409-9421
For sales or technical support, contact RFMD at +1.336.678.5570 or customerservice@rfmd.com.
DS150128
The information in this publication is believed to be accurate. However, no responsibility is assumed by RF Micro Devices, Inc. ("RFMD") for its use, nor for any infringement of patents or other rights of
third parties resulting from its use. No license is granted by implication or otherwise under any patent or patent rights of RFMD. RFMD reserves the right to change component circuitry, recommended
application circuitry and specifications at any time without prior notice.
3 of 16
RFSA3623
Typical Application Schematic
RF Micro Devices Inc. 7628 Thorndike Road, Greensboro, NC 27409-9421
For sales or technical support, contact RFMD at +1.336.678.5570 or customerservice@rfmd.com.
DS150128
The information in this publication is believed to be accurate. However, no responsibility is assumed by RF Micro Devices, Inc. ("RFMD") for its use, nor for any infringement of patents or other rights of
third parties resulting from its use. No license is granted by implication or otherwise under any patent or patent rights of RFMD. RFMD reserves the right to change component circuitry, recommended
application circuitry and specifications at any time without prior notice.
4 of 16
RFSA3623
Typical Performance:
RF Micro Devices Inc. 7628 Thorndike Road, Greensboro, NC 27409-9421
For sales or technical support, contact RFMD at +1.336.678.5570 or customerservice@rfmd.com.
DS150128
The information in this publication is believed to be accurate. However, no responsibility is assumed by RF Micro Devices, Inc. ("RFMD") for its use, nor for any infringement of patents or other rights of
third parties resulting from its use. No license is granted by implication or otherwise under any patent or patent rights of RFMD. RFMD reserves the right to change component circuitry, recommended
application circuitry and specifications at any time without prior notice.
5 of 16
RFSA3623
Typical Performance:
Note: Attenuator remains monotonic if step error is less than +0.25dB.
RF Micro Devices Inc. 7628 Thorndike Road, Greensboro, NC 27409-9421
For sales or technical support, contact RFMD at +1.336.678.5570 or customerservice@rfmd.com.
DS150128
The information in this publication is believed to be accurate. However, no responsibility is assumed by RF Micro Devices, Inc. ("RFMD") for its use, nor for any infringement of patents or other rights of
third parties resulting from its use. No license is granted by implication or otherwise under any patent or patent rights of RFMD. RFMD reserves the right to change component circuitry, recommended
application circuitry and specifications at any time without prior notice.
6 of 16
RFSA3623
Typical Performance:
RF Micro Devices Inc. 7628 Thorndike Road, Greensboro, NC 27409-9421
For sales or technical support, contact RFMD at +1.336.678.5570 or customerservice@rfmd.com.
DS150128
The information in this publication is believed to be accurate. However, no responsibility is assumed by RF Micro Devices, Inc. ("RFMD") for its use, nor for any infringement of patents or other rights of
third parties resulting from its use. No license is granted by implication or otherwise under any patent or patent rights of RFMD. RFMD reserves the right to change component circuitry, recommended
application circuitry and specifications at any time without prior notice.
7 of 16
RFSA3623
Typical Performance:
RF Micro Devices Inc. 7628 Thorndike Road, Greensboro, NC 27409-9421
For sales or technical support, contact RFMD at +1.336.678.5570 or customerservice@rfmd.com.
DS150128
The information in this publication is believed to be accurate. However, no responsibility is assumed by RF Micro Devices, Inc. ("RFMD") for its use, nor for any infringement of patents or other rights of
third parties resulting from its use. No license is granted by implication or otherwise under any patent or patent rights of RFMD. RFMD reserves the right to change component circuitry, recommended
application circuitry and specifications at any time without prior notice.
8 of 16
RFSA3623
Evaluation Board Schematic
RF Micro Devices Inc. 7628 Thorndike Road, Greensboro, NC 27409-9421
For sales or technical support, contact RFMD at +1.336.678.5570 or customerservice@rfmd.com.
DS150128
The information in this publication is believed to be accurate. However, no responsibility is assumed by RF Micro Devices, Inc. ("RFMD") for its use, nor for any infringement of patents or other rights of
third parties resulting from its use. No license is granted by implication or otherwise under any patent or patent rights of RFMD. RFMD reserves the right to change component circuitry, recommended
application circuitry and specifications at any time without prior notice.
9 of 16
RFSA3623
Evaluation Board Bill of Materials (BOM)
Description
Reference Designator
Manufacturer
Manufacturer's P/N
RFSA3613-410
Dynamic Details (DDI) Toronto
RFMD
RFSA3613-410(B)
RFSA3623SB
Digital Step Attenuator, 5MHz to 6000MHz
CAP, 1µF, 10%, 25V, X7R, 1206
U1
C1
Taiyo Yuden (USA), Inc.
Molex
CE TMK316BJ105KL-T
SD-73251-4000
CONN, SMA, END LNCH, UNIV, HYB
MNT, FLT
J1-J4
CONN, HDR, ST, PLRZD, 2-PIN, 0.100”
CONN, HDR, ST, 3 x 5, 0.100”, T/H
CONN, HDR, 2 x 4, RA, 0.100”, T/H
CONN, SKT, 24-PIN DIP, 0.600”, T/H
MOD, USB TO SERIAL UART, SSOP-28
CAP, 470pF, 5%, 50V, C0G, 0402
Jumper, 2-Pin
P1
ITW Pancon
Samtec Inc.
MPSS100-2-C
TSW-105-07-L-T
TSW-104-08-G-D-RA
24-6518-10
P3
P4
P2
Samtec Inc.
Aries Electronics Inc.
Future Technology Devices Int’l
Murata Electronics
3M Interconnect Solutions
N/A
M1 (See Note 1)
C4
UM232R
GRM1555C1H471JA01D
929950.00
S1-S4 (See Note 2)
C5-C13
DNP
N/A
Notes:
1. M1 should be mounted into P2 with respect to the Pin 1 alignment of M1 andP2.
2. Install S1-S4 into P3 as indicated on Evaluation Board Assembly Drawing
RF Micro Devices Inc. 7628 Thorndike Road, Greensboro, NC 27409-9421
For sales or technical support, contact RFMD at +1.336.678.5570 or customerservice@rfmd.com.
DS150128
The information in this publication is believed to be accurate. However, no responsibility is assumed by RF Micro Devices, Inc. ("RFMD") for its use, nor for any infringement of patents or other rights of
third parties resulting from its use. No license is granted by implication or otherwise under any patent or patent rights of RFMD. RFMD reserves the right to change component circuitry, recommended
application circuitry and specifications at any time without prior notice.
10 of 16
RFSA3623
Evaluation Board Assembly Drawing
RF Micro Devices Inc. 7628 Thorndike Road, Greensboro, NC 27409-9421
For sales or technical support, contact RFMD at +1.336.678.5570 or customerservice@rfmd.com.
DS150128
The information in this publication is believed to be accurate. However, no responsibility is assumed by RF Micro Devices, Inc. ("RFMD") for its use, nor for any infringement of patents or other rights of
third parties resulting from its use. No license is granted by implication or otherwise under any patent or patent rights of RFMD. RFMD reserves the right to change component circuitry, recommended
application circuitry and specifications at any time without prior notice.
11 of 16
RFSA3623
Evaluation Board Jumper Programming
Jumpers
Connector
Signal
Position
U1 Connection
VDD (From P1)
VIO (From P4)
GND
Comment
0
1
0
1
0
1
0
1
Logic
Voltage
S1
S2
S3
S4
AO
A1
A2
External Address
External Address
External Address
U1_VDD
P3
GND
U1_VDD
GND
U1_VDD
Note: Default jumper settings are BOLD.
Evaluation Board Programming Using USB Interface
Serial Addressable Mode
All programming jumpers on the evaluation board are set to the default values indicated in the table. Refer to the
Control Bit Generator (CBG) Software Reference Manual for detailed instructions on how to setup the software for use.
Apply the supply voltage to P1. Select ‘RFSA3623’ from the RFMD Parts List of the CBG user interface. Set the
attenuation value using the CBG user interface. The attenuator is set to the desired state and measurements can be
taken. Note that the external address bits must all be set to ‘0’ when using the USB interface as the CBG software
does not have the capability to set the external address in the serial data stream at this time.
Evaluation Board Programming Using External Bus
Serial Addressable Mode
This configuration allows the user to control the attenuator through the P4 connector using an external harness.
Remove the USB interface board if it is currently installed on the evaluation board. Connect a user-supplied harness to
the P4 connector. Note that the top row of P4 contains the serial bus signals and the bottom row is ground.
Programming jumper S1 is set to ‘0’. External address jumpers S2 through S4 can be set to any value desired by the
user. Apply the supply voltage to P1. Send the appropriate signals onto the serial bus lines in accordance with the
Serial Addressable Mode Timing Diagram. The attenuator is set to the desired state and measurements can be taken.
Default Power-up State
This default attenuation state is maximum (15.75dB) when supply voltage is applied to the attenuator. The LE signal
must be held to logic ‘0’ during power-up.
RF Micro Devices Inc. 7628 Thorndike Road, Greensboro, NC 27409-9421
For sales or technical support, contact RFMD at +1.336.678.5570 or customerservice@rfmd.com.
DS150128
The information in this publication is believed to be accurate. However, no responsibility is assumed by RF Micro Devices, Inc. ("RFMD") for its use, nor for any infringement of patents or other rights of
third parties resulting from its use. No license is granted by implication or otherwise under any patent or patent rights of RFMD. RFMD reserves the right to change component circuitry, recommended
application circuitry and specifications at any time without prior notice.
12 of 16
RFSA3623
Pin Names and Descriptions
Pin
1
Name
VDD
A0
Description
Supply Voltage
A0 External Address Pin
Ground Pin
2
3
GND
RF Input Pin
Incident RF power must enter this pin for rated thermal performance and reliability
4
RFIN
Do not apply DC power to this pin. Pin may be DC grounded externally and is grounded thru resistors internal
to the part.
5
6
7
8
GND
GND
GND
GND
Ground Pin
Ground Pin
Ground Pin
Ground Pin
RF Output Pin; Do not apply DC power to this pin. Pin may be DC grounded externally and is grounded thru
resistors internal to the part.
9
RFOUT
10
11
GND
GND
Ground Pin
Ground Pin
Latch Enable
12
LE
The leading edge of signal on LE causes the attenuator to change state
13
14
15
16
CLK
SI
Serial Clock Input
Serial data Input
A1
A2
A1 External Address Pin
A2 External Address Pin
Serial Addressable Mode Attenuation Word Truth Table
Attenuation Word
Attenuation State
D0
(LSB)
D7
D6
D5
D4
D3
D2
D1
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
L
L
L
L
L
L
H
H
L
L
L
L
L
H
L
H
L
L
L
L
H
L
L
H
L
L
L
H
L
L
L
H
L
L
H
L
L
L
L
H
L
H
L
L
L
L
L
H
0dB / Reference Insertion Loss
0.25dB
0.5dB
1dB
2dB
4dB
8dB
15.75dB
RF Micro Devices Inc. 7628 Thorndike Road, Greensboro, NC 27409-9421
For sales or technical support, contact RFMD at +1.336.678.5570 or customerservice@rfmd.com.
DS150128
The information in this publication is believed to be accurate. However, no responsibility is assumed by RF Micro Devices, Inc. ("RFMD") for its use, nor for any infringement of patents or other rights of
third parties resulting from its use. No license is granted by implication or otherwise under any patent or patent rights of RFMD. RFMD reserves the right to change component circuitry, recommended
application circuitry and specifications at any time without prior notice.
13 of 16
RFSA3623
Serial Addressable Mode Address Word Truth Table
Address Word
A2
Address Setting
A7
A6
A5
A4
A3
A1
A0
(MSB)
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
L
L
L
L
L
H
L
000
001
010
011
100
101
110
111
L
H
H
L
L
H
L
H
H
H
H
L
H
L
H
H
H
Serial Addressable Mode Timing Diagram
A[2:0]
X
VALID
X
A[2:0] External Address Setting
LE
CLK
SI
X
D0
D1
D2
D3
D4
D5
D6
D7
A0
A1
A2
A3
A4
A5
A6
A7
X
Note: Bits D6-D7, A3-A7 are not used and can be set to logic high or low
RF Micro Devices Inc. 7628 Thorndike Road, Greensboro, NC 27409-9421
For sales or technical support, contact RFMD at +1.336.678.5570 or customerservice@rfmd.com.
DS150128
The information in this publication is believed to be accurate. However, no responsibility is assumed by RF Micro Devices, Inc. ("RFMD") for its use, nor for any infringement of patents or other rights of
third parties resulting from its use. No license is granted by implication or otherwise under any patent or patent rights of RFMD. RFMD reserves the right to change component circuitry, recommended
application circuitry and specifications at any time without prior notice.
14 of 16
RFSA3623
Serial Bus Timing Specifications
Parameter
Limit
25
20
20
5
Unit
MHz max
ns min
ns min
ns min
ns min
ns min
ns min
ns min
ns min
Comment
CLK Frequency
CLK High
t1
t2
t3
t4
t5
t6
t7
t8
t9
CLK Low
SI to CLK Setup Time
SI to CLK Hold Time
SI Valid
5
30
5
LE to CLK Setup Time
CLK to LE Setup Time
LE Pulse Width
5
10
RF Micro Devices Inc. 7628 Thorndike Road, Greensboro, NC 27409-9421
For sales or technical support, contact RFMD at +1.336.678.5570 or customerservice@rfmd.com.
DS150128
The information in this publication is believed to be accurate. However, no responsibility is assumed by RF Micro Devices, Inc. ("RFMD") for its use, nor for any infringement of patents or other rights of
third parties resulting from its use. No license is granted by implication or otherwise under any patent or patent rights of RFMD. RFMD reserves the right to change component circuitry, recommended
application circuitry and specifications at any time without prior notice.
15 of 16
RFSA3623
Package Drawing (Dimensions in millimeters)
Branding Diagram
RF Micro Devices Inc. 7628 Thorndike Road, Greensboro, NC 27409-9421
For sales or technical support, contact RFMD at +1.336.678.5570 or customerservice@rfmd.com.
DS150128
The information in this publication is believed to be accurate. However, no responsibility is assumed by RF Micro Devices, Inc. ("RFMD") for its use, nor for any infringement of patents or other rights of
third parties resulting from its use. No license is granted by implication or otherwise under any patent or patent rights of RFMD. RFMD reserves the right to change component circuitry, recommended
application circuitry and specifications at any time without prior notice.
16 of 16
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