TRF3710

TRF3710 www.ti.com IQ DEMODULATOR SLWS199A – AUGUST 2007 – REVISED FEBRUARY 2008 FEATURES 1 2 Frequency Range: 1.7 GHz to 2 GHz Integrated Baseband Programmable-Gain Amplifier On-Chip Programmable Baseband Filter High Cascaded IP3: 21 dBm at 1.9 GHz High IP2: 60 dBm at 1.9 GHz Hardware and Software Power Down 3-Wire Serial Programmable Interface Single Supply: 4.5-V to 5.5-V Operation APPLICATIONS Wireless Infrastructure: – WCDMA – CDMA Wireless Local Loop High-Linearity Direct Downconversion Receiver To Microcontroller To Microcontroller CLOCK DATA STROBE MIXIoutp MIXIoutn NC NC Gain_B0 Gain_B1 Gain_B2 VOFFI VCMI RFin GNDDIG VCCDIG CHIP_EN VCCMIX NC MIXinp MIXinn NC VCCMIX NC NC NC 48 47 46 45 44 43 42 41 40 39 38 37 1 36 2 35 3 34 4 33 5 32 6 31 TRF3710 7 30 8 29 9 28 10 27 11 26 12 25 13 14 15 16 17 18 19 20 21 22 23 24 VCCBBI AGND BBIoutp BBIoutn NC LOip LOin VCCLO BBQoutp BBQoutn AGND VCCBBQ To ADC I LOin To ADC Q NC NC NC MIXQoutp MIXQoutn NC NC REXT VCCBIAS GNDBIAS VOFFQ VCMQ 30 kW DESCRIPTION The TRF3710 is a highly linear and integrated direct-conversion quadrature demodulator optimized for third-generation (3G) wireless infrastructure. The TRF3710 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...