American Microwave Corporation
7309-A Grove Road
Frederick, MD 21704


ISO -9001:2015

In Pursuit of Excellence
Through Engineering since 1978


AMC Model AGH-2856-70D is a Voltage
Controlled Variable Attenuator Module
With Built In Linearizer/Driver Circuitry, Designed for High
Dynamic Range and
High Accuracy Applications.


 Frequency Range

4.2 – 4.4 GHz Minimum
(Consult Factory for Other Frequency Ranges)

 Insertion Loss

2.0 dB Maximum

 Attenuation Flatness

  0 –
30 dB: ±0.3 dB Maximum
30 – 50 dB: ±0.4 dB Maximum
50 –
70 dB: ±0.5 dB Maximum

 Attenuation Dynamic Range

70 dBc Minimum

 Attenuation Accuracy (Deviation From
   Nominal Attenuation)

  0 – 30 dB: ±0.5 dB Maximum
30 – 50 dB: ±1.0 dB Maximum
50 – 70 dB: ±1.5 dB Maximum



 Temperature Coefficient

±0.025 dB/ºC

 Switching Time

1.5 uS Maximum

 VSWR (All Attenuation Levels)

2:1 Maximum

 Power Ratings

+20 dBm Maximum


Voltage Controlled (0 – 4 Volts)
17.5 dB/Volt Transfer Function Slope

 Power Supply

+12 VDC ±5% @ 100 mA Maximum
– 12 VDC ±5% @   20 mA Maximum


RF Input/Output: SMA Female
Power: Solder Pin
Control: Solder Pin


1.8″ X 1.67″ X 0.50″

Available Options:


J1 SMA Male, J2 SMA Female


Two SMA Male Connectors


±15 VDC Supplies


SMC Male Control Connector


SMA Female Control Connector


10 dB/Volt Transfer Function Slope
(Other Transfer Function Slopes Available)

Environmental Ratings:

Our standard
environmental ratings are as follows, for specific
requirements please contact us…

 -55 ºC to +125
ºC Operating
ºC to +125 ºC Non-Operating
 Humidity:  MIL-STD-202F,
Method 103B Cond. B
 Shock:  MIL-STD-202F,
Method 213B Cond. B
 Vibration:  MIL-STD-202F,
Method 204D Cond. B
 Altitude:  MIL-STD-202F,
Method 105C Cond. B

 Temperature Cycle:
Method 107D Cond. A


Outline Drawing:

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Product Feature:

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