TRF2432

The TRF2432 is a fully integrated IQ transceiver specifically for use in 802.11 applications. The TRF2432 is designed to perform the IQ conversion at 374MHz IF as well as provide an RFLO and control logic to a TI RFFE (Radio Frequency Front End). The TRF2432 uses a common IF frequency for both bands, which eliminates the need for an additional IF filter in dual band applications. The TRF2432 has an internal IQ DC offset calibration function for the receive IQ interface. Combined with a TI integrated RFFE, the TRF2432 completes the TI WLAN two-chip radio.

The TRF2432 incorporates all of the system blocks from the modem to the RFFE except for the IF filtering and the reference crystal. The ASIC uniquely incorporates an internal PLL reference oscillator where only a crystal is needed, and also provides a clock output for base-band/MAC ASICs. TRF2432 includes two synthesizers with VCOs, IQ modulator, IQ demodulator, anti aliasing filters, IF amplifiers, receive AGC circuit, transmit power control and serial interface.