基于TQM879026下的0.7-4 GHz ¼W Digital Variable Gain Amplifier Datasheet

　　Applications

　　 3G / 4G Wireless Infrastructure

　　 Repeaters 

　　LTE / WCDMA / CDMA

　　Product Features

　　 700-4000 MHz 

　　32 dB Maximum Gain at 2140 MHz 

　　31.5 dB Gain Range in 0.5 dB Steps 

　　+42.5 dBm Output IP3 

　　+24 dBm Output P1dB 

　　1.6 dB Noise Figure 

　　3-wire SPI Control Programming

　　　　General Description

　　The TQM879026 is a digital variable gain amplifier （DVGA） featuring high linearity and digital variable gain control in 0.5 dB step sizes. This DVGA integrates a gain block， a digital-step attenuator （DSA）， and a high linearity ¼-watt amplifier into a compact 4x4 mm package. The internal 6-bit DSA provides a 31.5 dB gain control range and is controlled with a serial periphery interface （SPITM）。

　　The individual stages are accessible to external ports to allow for optimization of the last stage amplifier for individual bands and also allowing other functional blocks to be added in-between the stages. The TQM879026 features variable gain from 1 dB to 32 dB at 2.14 GHz， +42.5 dBm output IP3， and +24 dBm P1dB while only consuming 174 mA current from a 5V supply. The module is available in a compact 24-pin 4x4 mm leadless SMT package.