High Linearity 1450-2750 MHz Variable Gain Amplifier

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ALM-81224 is a high linearity variable-gain amplifier module for use in the 1450-2750MHz band.

Gain control is achieved using a single DC voltage input pin, and High linearity is achieved through the use of Broadcom's proprietary GaAs Enhancement-mode pHEMT process.


  • High Linearity at low bias current
  • High max gain: 23.8 dB typ
  • High Linearity performance
  • Fully-matched 50 Ohm input and simple output match
  • Low Noise Figure
  • Built-in attenuator with monotonic response


  • Basestation Transmitter, Receiver and Temperature Compensation Circuits requiring continuously variable gain functionality

Not Recommended for New Design

Replacement Part

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Substance Compliance

  • RoHS6
    Fully Compliant
Specification Value
Lifecycle Not Recommended for New Design
RoHS6 Compliant Y
Distrib. Inventory No
IIP3 (dBm) 44 (OIP3)
Frequency (GHz) 1.45-2.75
Bias Condition (V@mA) 5V@383mA
NF (dB) 2.0
Gain (dB) 23.8
P1dB (dBm) 27.4
OIP3 (dBm) 44
Package SMT 6x6

Reliability Data Sheet1 i
S-Parameter1 i


Demonstration circuit board for ALM-81224