TRF6903 is not recommended for new designs.
This product continues to be in production to support existing customers. Please consider one of these alternatives:
Similar functionality to the compared device.
CC1101 ACTIVE Low-power Sub-1 GHz wireless transceiver This product has more integration with increased functionality and improved performance.

Product details

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  • 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

  • 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.

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.

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Technical documentation

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Type Title Date
* Data sheet Single-Chip Multiband RF Transceiver datasheet (Rev. D) 25 May 2005
Technical article An out-of-the-box Internet of Things: building a seamless and secure smart home network 12 Jun 2018
Technical article Thread vs. Zigbee – what’s the difference? 16 May 2018
Technical article Your microcontroller deserves a nap – designing “sleepy” wireless applications 28 Mar 2018
Technical article SimpleLink™ MCU SDKs: Breaking down TI Drivers 12 Apr 2017
Application note ISM-Band and Short Range Device Regulatory Compliance Overview 08 Jun 2005

Design & development

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Calculation tool

RF-POWERCALC — RF Transceiver Power Consumption Calculator

This tool can be used to estimate the average power consumption for both receive and transmit modes of operation for basic wireless links. The tool will calculate separate current consumption figures along with expected battery life for transmit and receive modes of operation.
Calculation tool

TRF6903EASYRF — TRF6903 EasyRF™ Tool

Calculates values for PLL filter, LNA, PA matching, Crystal switch caps, IF matching, and S&H capacitors.
Package Pins Download
LQFP (PT) 48 View options

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