TRF6903 (NRND)

Single-Chip RF Transceiver

Single-Chip RF Transceiver - TRF6903

Not Recommended for New Designs (NRND)

Replaced By CC1101– The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device.

TI does not recommend using this part in a new design. This product continues to be in production to support existing customers.


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.


  • 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

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