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TriQuint rolls digital variable gain amplifier

Posted: 03 May 2012 ?? ?Print Version ?Bookmark and Share

Keywords:digital variable gain amplifier? SPI control? wireless infrastructure? LTE?

TriQuint Semiconductor has released a digital variable gain amplifier (DVGA) that according to the company offers high linearity over the entire gain control range. The firm added that the amplifier module integrates two gain blocks, a digital-step attenuator (DSA) and a high linearity 0.5W amplifier.

The module has the added feature of integrating all matching components, bias chokes and blocking capacitors, indicated TriQuint. The internal 6bit DSA provides a 31.5dB gain control range in 0.5dB steps and is controlled with a serial periphery interface (SPI).

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


The TQM879008 offers variable gain from 10-41.5dB at 2.5GHz.

The TQM879008 is pin compatible with the TQM829007 (0.7-1GHz, 0.25W DVGA) and TQM879006 (1.8-2.7GHz, 0.25W 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.

The product Features 2.3-2.7GHz frequency range, fully internally matched module, integrated blocking capacitors and bias inductors, and 3-wire SPI control programming, detailed the company. Applications for the TQM879008 include 3G/4G wireless infrastructure, VSAT, LTE/WCDMA/GSM, repeaters, point-to-point radio and high power amplifiers.

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