TRF4903PW [Texas Instruments]

The TRF4903 is a single-chip RF transmitter for 315-MHz, 433-MHz, 868-MHz, and 915-MHz ISM bands. It operates from 2.2 V to 3.6 V and features low power consumption, an integer-N synthesizer with fully integrated VCO, on-chip reference oscillator with programmable XTAL trimming, and a power amplifier with 8-dBm typical output. It includes a programmable brownout detector, integrated data bit synchronizer, and baud rate selection. The device requires minimal external components and uses a 3-wire serial interface.