TRF6903

• Single-Chip RF Transceiver for 315-MHz, 433-MHz, 868-MHz, and 915-MHz Industrial, Scientific, and Medical (ISM) Bands
• 2.2-V to 3.6-V Operation
• Low Power Consumption
• FSK/OOK Operation
• Integer-N Synthesizer With Fully Integrated Voltage Controlled Oscillator (VCO)
• On-Chip Reference Oscillator and Phase-Locked Loop (PLL)
• Power Amplifier With 8-dBm Typical Output Power
• Programmable Brownout Detector
• Clock Recovery With Integrated Data Bit Synchronizer and Baud Rate Selection
• Linear Receive Strength Signal Indicator (RSSI)
• Flexible 3-Wire Serial Interface
• Minimal Number of External Components Required
• 48-Pin Low-Profile Plastic Quad Flat Package (PQFP)
• Programmable XTAL Trimming
• Lock Detect Indicator
• Programmable Training Sequence Recognition
• Pin Compatible to the TRF6901

The TRF6903 single-chip solution is an integrated circuit intended for use as a low-cost multiband FSK or OOK transceiver to establish a frequency-programmable, half-duplex, bidirectional RF link. The multichannel transceiver is intended for digital (FSK, OOK) modulated applications in the North American and European 315-MHz, 433-MHz, 868-MHz, and 915-MHz ISM bands. The single-chip transceiver operates down to 2.2 V and is designed for low power consumption. The synthesizer has a typical channel spacing of better than 200 kHz and features a fully-integrated VCO. Only the PLL loop filter is external to the device.

Two fully-programmable operation modes, Mode0 and Mode1, allow extremely fast switching between two preprogrammed settings (for example, receive (RX)/transmit (TX); TX_frequency_0/TX_frequency_1; RX_frequency_0/RX_frequency_1; …) without reprogramming the device.