TRF371125 Datasheet | Texas Instruments

.ti. SLWS219B - JANUARY 2010 - REVISED DECEMBER 2010 INTEGRATED IQ DEMODULATOR Check for Samples: TRF371125 Features - 2 Frequency Range: 700 MHz to 4000 MHz - Integrated Baseband Programmable-Gain Amplifier - On-Chip Programmable Baseband Filter - High Out-of-Band IP3: 24 d Bm at 2400 MHz - High Out-of-Band IP2: 60 d Bm at 2400 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 - Wi MAX - High-Linearity Direct-Downconversion Receiver - LTE (Long Term Evolution) DESCRIPTION The TRF371125 is a highly linear and integrated direct-conversion quadrature demodulator. The TRF371125 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 TRF371125 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 QFN package, the TRF371125 provides the smallest and most integrated receiver solution available for highperformance equipment. To Microcontroller To Microcontroller CLOCK DATA STROBE MIXIoutp MIXIoutn NC NC Gain_B0 Gain_B1 Gain_B2 READBACK...