TRF371125
www.ti.com SLWS219B – JANUARY 2010 – REVISED DECEMBER 2010 INTEGRATED IQ DEMODULATOR
Check for Samples: TRF371125 FEATURES 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. 1 2 Frequency Range: 700 MHz to 4000 MHz
Integrated Baseband Programmable-Gain
Amplifier
On-Chip Programmable Baseband Filter
High Out-of-Band IP3: 24 dBm at 2400 MHz
High Out-of-Band IP2: 60 dBm 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 Housed in a 7-mm Г— 7-mm QFN package, the
TRF371125 provides the smallest and most …
