Digital Variable Gain Amplifier

Part # TQM879008


Key Features

  • 2.3 - 2.7 GHz frequency range
  • 41.5 dB maximum gain at 2.5 GHz
  • 31.5 dB gain range in 0.5 dB steps
  • +48.5 dBm Output IP3
  • +27.3 dBm Output P1dB
  • Fully internally matched module
  • Integrated blocking capacitors, bias inductors
  • 3-wire SPI control programming


The TQM879008 is a digital variable gain amplifier (DVGA) featuring high linearity over the entire gain control range. This amplifier module integrates two gain blocks, a digital-step attenuator (DSA) and a high linearity 0.5 W amplifier. The module has the added feature of integrating all matching components, bias chokes and blocking capacitors. The internal 6-bit DSA provides a 31.5 dB gain control range in 0.5 dB steps and is controlled with a serial periphery interface (SPI™).

The TQM879008 features variable gain from 10 dB to 41.5 dB at 2.5 GHz, +48.5 dBm output IP3, and +27.3 dBm P1dB. The module operates from a single +5 V supply and is available in a compact 28-pin 6 x 6 mm leadless SMT package.

The TQM879008 is pin compatible with the TQM829007 (0.7 - 1.0 GHz, 0.25 W DVGA) and TQM879006 (1.8 - 2.7 GHz, 0.25 W DVGA). This allows one to size the right type of device for specific system level requirements as well as making the DVGA family ideal for applications where a common PCB layout is used for different frequency bands.


Frequency (MHz) 1,500 to 2,700
Attenuation Range (dB) 31.5
Gain (dB) 41.5
P1dB (dBm) 27.3
Output IP3 (dBm) 48.5
NF (dB) 3.9
Voltage (V) 5
Current (mA) 285
Package (mm) 6 x 6
RoHS  Yes
Halogen Free  Yes

Typical Applications

Additional Information

Status Production