RFSA3715 Datasheet, PDF (14/20 Pages) RF Micro Devices – 5MHz to 4000MHz, Digital Step Attenuator

RFSA3715
Pin Names and Descriptions
Pin
Name
Description
1
NC
No Connect
2
VDD
Supply Voltage
Mode Select Pin
3
PBAR/S
Logic Low = Parallel
Logic High = Serial
4
A0
A0 External Address Pin
5
GND
Ground Pin
6
GND
Ground Pin
7
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.
8
GND
Ground Pin
9
GND
Ground Pin
10
GND
Ground Pin
11
GND
Ground Pin
12
GND
Ground Pin
13
GND
Ground Pin
14
GND
Ground Pin
15
GND
Ground Pin
16
GND
Ground Pin
17
GND
Ground Pin
18
RFOUT
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.
19
GND
Ground Pin
20
GND
Ground Pin
21
A2
A2 External Address Pin
22
A1
A1 External Address Pin
23
LE
Latch Enable, The leading edge of signal on LE causes the attenuator to change setting for serial and latched
parallel modes. For direct parallel mode keep LE at a logic high level.
24
CLK
Serial Clock Input
25
SI
Serial Data Input
26
C16
16dB Parallel Control Bit
27
C8
8dB Parallel Control Bit
28
C4
4dB Parallel Control Bit
29
C2
2dB Parallel Control Bit
30
C1
1dB Parallel Control Bit
31
C0.5
0.5dB Parallel Control Bit
32
C0.25
0.25dB Parallel Control Bit
RF Micro Devices Inc. 7628 Thorndike Road, Greensboro, NC 27409-9421
DS150205
For sales or technical support, contact RFMD at +1.336.678.5570 or [e-mail].
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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