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RFDA2125 Datasheet(PDF) 23 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) 23 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.
23 of 26
Truth Table
Serial Port Interface
D5
D4
D3
D2
D1
D0
1
1
1
1
1
1
0dB
1
1
1
1
1
0
-0.5dB
1
1
1
1
0
1
-1dB
1
1
1
0
1
1
-2dB
1
1
0
1
1
1
-4dB
1
0
1
1
1
1
-8dB
0
1
1
1
1
1
-16dB
0
0
0
0
0
0
-31.5dB
Control Bit
Gain Relative to Maximum Gain
Power-up Programming Truth Table
PUP
Attenuator Setting
Low
Attenuation at max, 31.5dB
High
Attenuation at min, 0dB
Logic Voltage Levels
State
Logic
Low
0V to 0.8V
High
2.0V to 5.0V
Programming example
– 6-Bit
MSB
LSB
D4
D3
D2
D0
D1
D5
CLK
DATA
LE



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