1
Applications
3G / 4G Wireless Infrastructure
CDMA, WCDMA, LTE Repeaters
ISM Infrastructure
Product Features
1.5-2.7 GHz Frequency Range
41.1 dB Maximum Gain at 2.5 GHz
31.5 dB Gain Range in 0.5 dB Steps
+47.5 dBm Output IP3
+27.3 dBm Output P1dB
Fully Internally Matched Module
Integrated Blocking Capacitors, Bias Inductors
3-wire SPI Control Programming
General Description
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 ½ 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 (SPITM)。
The TQM879008 features variable gain from 10 dB to 41.1dB at 2.5 GHz, +47.5 dBm output IP3, and +27.3 dBm P1dB. The module operates from a single +5V supply and is available in a compact 28-pin 6x6 mm leadless SMT package.
The TQM879008 is pin compatible with the TQM829007 (0.7-1.0GHz, 0.25W DVGA) and TQM879006 (1.4- 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.
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