RFMD Datasheet Template

RFSA3523
RFSA3523
RFSA3523
5MHz to 6000MHz, Digital Step Attenuator
VDD
A0
A2
A1
SI
CLK
The RFMD’s RFSA3523 is a 5-bit digital step attenuator
(DSA) that features high linearity over the entire 15.5dB gain
control range with 0.5dB steps. The RFSA3523 uses serial
control interface. The RFSA3523 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 RFSA3523 is available in a 3mm x 3mm QFN
package.
16
15
14
13
1
12
LE
11
GND
LOGIC CONTROL
2
GND
3
RFIN
4
10
GND
9
RFOUT
5-BIT DSA
Package: QFN, 16-Pin,
3.0mm x 3.0mm x 0.85mm
Features
■
5-Bit, 15.5dB Range, 0.5dB 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
■
Single Supply 3V to 5V Operation
■
RF Pins Have No DC Voltage, Can
be DC Grounded Externally
■
Power-up Default Setting Is
Maximum Attenuation
Applications
8
GND
7
GND
GND
6
GND
5
Functional Block Diagram
■
2G through 4G Base Stations
■
Point-to-Point
■
WiMax/WiFi
■
Test Equipment
Ordering Information
RFSA3523SQ
Sample bag with 25 pieces
RFSA3523SR
7" Reel with 100 pieces
RFSA3523TR7
7" Reel with 2500 pieces
RFSA3523PCK-410
5MHz to 6000MHz PCBA with 5-piece sample bag
RF Micro Devices Inc. 7628 Thorndike Road, Greensboro, NC 27409-9421
For sales or technical support, contact RFMD at +1.336.678.5570 or [email protected].
®
DS150128
®
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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RFSA3523
Absolute Maximum Ratings
Parameter
Rating
Unit
Supply Voltage (VDD)
-0.5 to +6.0
V
All Other DC and Logic Pins (Supply Voltage Must
Be Applied Prior to Any Other Pin Voltages)
-0.5 to VDD
V
Maximum Input Power at RFIN Pin at 85°C Case
Temperature
+30
dBm
Maximum Input Power at RFOUT Pin at 85°C Case
Temperature
+27
dBm
Storage Temperature Range
-40 to +150
°C
ESD Rating - Human Body Model (HBM)
1000
V
Moisture Sensitivity Level
MSL1
Caution! ESD sensitive device.
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.
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.
Recommended Operating Condition
Specification
Parameter
Min
Operating Temperature Range
(RF Input power handling de-rates above 85°C)
-40
Operating Junction Temperature
Supply Voltage
2.7
Typ
Max
Unit
+105
°C
125
°C
5.5
V
Nominal Operating Parameters
Specification
Parameter
Unit
Min
Typ
Condition
Max
General Performance
Supply Current
Thermal Resistance
180
µA
55
°C/W
RF Input Power at RFIN Pin
27
dBm
RF Input Power at RFOUT Pin
20
dBm
6000
MHz
Steady state operation, current draw during attenuation state transitions is
higher.
At maximum attenuation state with RF power applied to the RFIN pin.
Continuous operation at +85°C case temperature
RF Performance
Frequency Range
5
Insertion Loss
1.4
dB
2000MHz, 0dB attenuation
Attenuation Range
15.5
dB
0.5dB step size
±(0.2 + 4%)
dB
Input IP3
55
dBm
Input P0.1dB
30
dBm
Return Loss
15
dB
Input and Output Impedance
50
Ω
Absolute Attenuation Error
RF Micro Devices Inc. 7628 Thorndike Road, Greensboro, NC 27409-9421
For sales or technical support, contact RFMD at +1.336.678.5570 or [email protected].
®
DS150128
®
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
RFSA3523
Specification
Parameter
Unit
Min
Typ
Condition
Max
RF Performance – Continued
Switching Speed
Successive Step Phase Delta
120
nsec
50% control to 10%/90% RF
2
Deg
2000MHz
Control
Digital Logic Low
Digital Logic High
0.63
1.17
V
V
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 [email protected].
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
RFSA3523
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 [email protected].
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
RFSA3523
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 [email protected].
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
RFSA3523
Typical Performance:
Note: Attenuator remains monotonic if step error is less than +0.5dB.
RF Micro Devices Inc. 7628 Thorndike Road, Greensboro, NC 27409-9421
For sales or technical support, contact RFMD at +1.336.678.5570 or [email protected].
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
RFSA3523
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 [email protected].
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
RFSA3523
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 [email protected].
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
RFSA3523
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 [email protected].
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
RFSA3523
Evaluation Board Bill of Materials (BOM)
Description
Reference Designator
RFSA3613-410
Manufacturer
Manufacturer's P/N
Dynamic Details (DDI) Toronto
RFSA3613-410(B)
Digital Step Attenuator, 5MHz to 6000MHz
U1
RFMD
RFSA3523SB
CAP, 1µF, 10%, 25V, X7R, 1206
C1
Taiyo Yuden (USA), Inc.
CE TMK316BJ105KL-T
J1-J4
Molex
SD-73251-4000
CONN, HDR, ST, PLRZD, 2-PIN, 0.100”
P1
ITW Pancon
MPSS100-2-C
CONN, HDR, ST, 3 x 5, 0.100”, T/H
P3
Samtec Inc.
TSW-105-07-L-T
CONN, HDR, 2 x 4, RA, 0.100”, T/H
P4
Samtec Inc.
TSW-104-08-G-D-RA
CONN, SKT, 24-PIN DIP, 0.600”, T/H
P2
Aries Electronics Inc.
24-6518-10
M1 (See Note 1)
Future Technology Devices Int’l
UM232R
C4
Murata Electronics
GRM1555C1H471JA01D
S1-S4 (See Note 2)
3M Interconnect Solutions
929950-00
C5-C13
N/A
N/A
CONN, SMA, END LNCH, UNIV, HYB
MNT, FLT
MOD, USB TO SERIAL UART, SSOP-28
CAP, 470pF, 5%, 50V, C0G, 0402
Jumpers, 2-Pin
DNP
Notes:
1.
2.
M1 should be mounted into P2 with respect to the Pin 1 alignment of M1 andP2.
Install S1-S4 into P3 as indicated on Evaluation Board Assembly 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 [email protected].
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
RFSA3523
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 [email protected].
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
RFSA3523
Evaluation Board Jumper Programming
Jumpers
Connector
Signal
Logic
Voltage
S1
S2
Position
U1 Connection
0
VDD (From P1)
1
VIO (From P4)
0
GND
1
U1_VDD
0
GND
1
U1_VDD
0
GND
1
U1_VDD
AO
Comment
External Address
P3
S3
S4
A1
External Address
A2
External Address
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 ‘RFSA3523’ 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 (15.5dB) 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 [email protected].
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
RFSA3523
Pin Names and Descriptions
Pin
Name
Description
1
VDD
2
A0
3
GND
Ground Pin
4
RFIN
RF Input Pin
Incident RF power must enter this pin for rated thermal performance and reliability
Do not apply DC power to this pin. Pin may be DC grounded externally and is grounded thru resistors internal
to the part.
5
GND
Ground Pin
6
GND
Ground Pin
7
GND
Ground Pin
8
GND
Ground Pin
9
RFOUT
10
GND
Ground Pin
11
GND
Ground Pin
12
LE
13
CLK
Serial Clock Input
14
SI
Serial data Input
15
A1
A1 External Address Pin
16
A2
A2 External Address Pin
Supply Voltage
A0 External Address 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.
Latch Enable
The leading edge of signal on LE causes the attenuator to change state
Serial Addressable Mode Attenuation Word Truth Table
Attenuation Word
Attenuation State
D7
D6
D5
D4
D3
D2
D1
(LSB)
D0
X
X
L
L
L
L
L
X
0dB / Reference Insertion Loss
X
X
L
L
L
L
H
X
0.5dB
X
X
L
L
L
H
L
X
1dB
X
X
L
L
H
L
L
X
2dB
X
X
L
H
L
L
L
X
4dB
X
X
H
L
L
L
L
X
8dB
X
X
H
H
H
H
H
X
15.5dB
RF Micro Devices Inc. 7628 Thorndike Road, Greensboro, NC 27409-9421
For sales or technical support, contact RFMD at +1.336.678.5570 or [email protected].
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
RFSA3523
Serial Addressable Mode Address Word Truth Table
Address Word
Address Setting
A7
A6
A5
A4
A3
A2
(MSB)
A1
A0
X
X
X
X
X
L
L
L
000
X
X
X
X
X
L
L
H
001
X
X
X
X
X
L
H
L
010
X
X
X
X
X
L
H
H
011
X
X
X
X
X
H
L
L
100
X
X
X
X
X
H
L
H
101
X
X
X
X
X
H
H
L
110
X
X
X
X
X
H
H
H
111
Serial Addressable Mode Timing Diagram
A[2:0]
X
X
VALID
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 D0, 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 [email protected].
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
RFSA3523
Serial Bus Timing Specifications
Parameter
Limit
Unit
Comment
t1
25
MHz max
CLK Frequency
t2
20
ns min
CLK High
t3
20
ns min
CLK Low
t4
5
ns min
SI to CLK Setup Time
t5
5
ns min
SI to CLK Hold Time
t6
30
ns min
SI Valid
t7
5
ns min
LE to CLK Setup Time
t8
5
ns min
CLK to LE Setup Time
t9
10
ns min
LE Pulse Width
RF Micro Devices Inc. 7628 Thorndike Road, Greensboro, NC 27409-9421
For sales or technical support, contact RFMD at +1.336.678.5570 or [email protected].
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
RFSA3523
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 [email protected].
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.
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