基于TQC9311 下的0.4 – 3.8 GHz Dual Channel DVGA

　　Applications 

　　Wireless Infrastructure 

　　LTE / WCDMA / CDMA / GSM 

　　General Purpose Wireless 

　　Diversity or MIMO Receivers

　　General Description

　　The TQC9311 is a dual-channel， digitally-controlled variable gain amplifier （DVGA） operating over a broadband frequency range of 400 to 3800 MHz. The DVGA features +36.5 dBm OIP3 while providing digital variable gain with 31.5 dB of gain range in 0.5 dB steps through a 12-bit serial mode control interface. This combination of performance parameters makes the DVGA ideal for diversity or MIMO receiver applications requiring gain control with high linearity and low noise figure.

　　The TQC9311 integrates a high performance digital step attenuator followed by a high linearity， broadband gain block in a dual-channel configuration. The dual channel DVGA is internally matched to 50 Ohms and does not require any external matching components. Bias choke inductors and bypass/blocking capacitors are also integrated into the module thereby reducing the number of external components needed.

　　The TQC9311 is packaged in a RoHS-compliant， compact 7 x 7 mm surface-mount leadless package.