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RFDA2125 Datasheet(PDF) 25 Page - RF Micro Devices

Part # RFDA2125
Description  Digital Controlled Variable Gain Amplifier 400MHz to 2700MHz, 6-Bit 0.5dB LSB Control
PDF  26 Pages
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Manufacturer  RFMD [RF Micro Devices]
Direct Link  http://www.rfmd.com
Logo RFMD - RF Micro Devices

RFDA2125 Datasheet(HTML) 25 Page - RF Micro Devices

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RFDA2125
rfmd.com
DS130326
7628 Thorndike Road, Greensboro, NC 27409-9421 ∙ For sales or technical
support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.
25 of 26
PIN Names and Descriptions:
Pin #
Pin Name
Description
1
SPI_CLK
Serial clock input
2
SPI_PUP
Power-up programming pin
3
GND
RF/DC Ground Connection
4
Vamp1
Supply voltage for amplifier 1
5
GND
RF/DC Ground Connection
6
GND
RF/DC Ground Connection
7
RF_IN
R
RF Input, AC coupled
8
GND
RF/DC Ground Connection
9
GND
RF/DC Ground Connection
10
GND
RF/DC Ground Connection
11
GND
RF/DC Ground Connection
12
GND
RF/DC Ground Connection
13
GND
RF/DC Ground Connection
14
GND
RF/DC Ground Connection
15
GND
RF/DC Ground Connection
16
DSA_OUT
Digital step attenuator output
17
GND
RF/DC Ground Connection
18
GND
RF/DC Ground Connection
19
GND
RF/DC Ground Connection
20
GND
RF/DC Ground Connection
21
Amp2_IN
RF input of amplifier 2
22
GND
RF/DC Ground Connection
23
GND
RF/DC Ground Connection
24
GND
RF/DC Ground Connection
25
RF_OUT
RF output, supply voltage for amplifier 2
26
GND
RF/DC Ground Connection
27
VBIAS
Supply voltage for the active bias circuit
28
VREF
Control input to the active bias circuit to set ICQ. Can be used as a power-down pin
29
GND
RF/DC Ground Connection
30
VDSA
Supply voltage for digital step attenuator and SPI
31
SPI_LE
Serial latch enable input
32
SPI_DATA
Serial data input



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