TQM879026

TQM879026 0.7−4 GHz ¼W Digital Variable Gain Amplifier Applications  3G / 4G Wireless Infrastructure  CDMA, WCDMA, LTE  Repeaters Product Features  0.7-4.0 GHz Frequency Range  32 dB Maximum Gain at 2.14 GHz  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 inbetween 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 176 mA current from a 5V supply. The module is available in a compact 24pin 4x4 mm leadless SMT package. 4x4 mm 24 Pin leadless SMT Package Functional Block Diagram Pin 1 Marking 24 NC 23 DSA Out 22 NC 21 NC 20 Amp2 In 19 NC NC 1 NC 2 DSA In 3 NC 4 Amp1 Out / VCC1 NC 5 6 DSA 6-BIT SPI 18 NC 17 NC 16 Amp2 Out / VCC2 15 LE 14 SID 13 CLK NC 7 Amp1 In 8 NC 9 SOD 10 NC 11 VDD 12 Backsid...