TRF371109

TRF371109 www.ti.com SLWS225B – DECEMBER 2010 – REVISED MAY 2011 Direct Downconversion Receiver Check for Samples: TRF371109 FEATURES 1 2 Frequency Range: 300 MHz to 1700 MHz Integrated Baseband Programmable Gain Amplifier On-Chip Programmable Baseband Filter High Cascaded IP3: 27 dBm at 900 MHz High IP2: 68 dBm at 900 MHz Hardware and Software Power Down Three-Wire Serial Interface Single Supply: 4.5-V to 5.5-V Operation Silicon Germanium Technology APPLICATIONS Multicarrier Wireless Infrastructure WiMAX High-Linearity Direct-Downconversion Receiver LTE (Long Term Evolution) DESCRIPTION The TRF371109 is a highly linear direct-conversion quadrature receiver. The TRF371109 integrates balanced I and Q mixers, LO buffers, and phase splitters to convert an RF signal directly to I and Q baseband. The on-chip programmable gain amplifiers allow adjustment of the output signal level without the need for external variable gain (attenuator) devices. The TRF371109 integrates programmable baseband low-pass filters that attenuate nearby interference, eliminating the need for an external baseband filter. Housed in a 7-mm × 7-mm VQFN package, the TRF371109 provides the smallest and most integrated receiver solution available for high-performance equipment. To Microcontroller To Microcontroller CLOCK DATA STROBE MIXIOUTP MIXIOUTN NC NC Gain_B0 Gain_B1 Gain_B2 READBACK NC RFIN GNDDIG VCCDIG CHIP_EN VCCMIX1 GND MIXINP MIXINN GND VCCMIX2 NC NC GND 48 47 46 45 ...