n North America: Tel. (800) 366-2266, Fax (800) 618-8883
n Asia/Pacific: Tel.+81-44-844-8296, Fax +81-44-844-8298
n Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020
Specifications subject to change without notice.
Visit www.macom.com for additional data sheets and product information.
V 2.0
VCTL2 VCTL1
RF OutRF In
Ordering Information
Part Number Package
AM55-0023 FQFP-N 5.0 mm Plastic Package
AM55-0023TR Forward Tape and Reel1
AM55-0023RTR Reverse Tape and Reel1
AM55-0023SMB Sample Board
1. If specific reel size is required, consult factory for part number
assignment.
Features
• Highly Integrated Variable Voltage Gain Control Amplifier
• Operates with 3.0 V to 5 V Supply Voltage
• Greater than 40 dB dynamic range
• High Output P1dB: +17 dBm @ 3 V, 19 dBm @ 5V
• Low Cost 5 mm FQFP-N Package
Description
M/A-COM’s AM55-0023 is a high performance, voltage
controlled, variable gain amplifier. It has been designed for use
in a broad range of applications including cellular base stations
and mobile radio where AGC is required to increase system
dynamic range.

The gain control operates best in the 900 MHz range and also
has useable gain to 2.5 GHz. DC current is low at 160 mA at
3V bias and 200 mA at 5V bias. The package is a low cost
MLF.

The AM55-0023 is fabricated using M/A-COM’s 0.5 micron
low noise GaAs MESFET process. The process features full
passivation for performance and reliability.
AM55-0023
Variable Voltage Gain Control Amplifier
0.8 - 2.0 GHz
1
Electrical Specifications TA = +25° C
Parameter Test Conditions Units Min. Typ. Max.
Gain Frequency = 0.9 GHz dB 23 25
Frequency = 2.0 GHz dB 10 12
Attenuation Range Frequency = 0.9 GHz dB 40 44
Frequency = 2.0 GHz dB 37 41
I/P Return Loss Frequency = 0.9 GHz dB 14 17
Frequency = 2.0 GHz dB 7 10
O/P Return Loss Frequency = 0.9 GHz dB 11 14
Frequency = 2.0 GHz dB 10 13
Noise Figure (min attn) Frequency = 0.9 GHz dB 9 12
P1dB Max P1dB when VDDB1,2,3 at 5 V dBm 14 18
IMD VDDB = 5 V dB 29 32
VDDA = 5 V dB 25 28
Functional Block Diagram