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TRF4903 Datasheet Single-chip Multiband Rf Transmitter

Manufacturer: Texas Instruments

Overview: TRF4903 SINGLEĆCHIP MULTIBAND RF TRANSMITTER D Single-Chip RF Transmitter for 315-MHz, 433-MHz, 868-MHz, and 915-MHz Industrial, Scientific, and Medical (ISM) Bands D 2.2-V to 3.6-V Operation D Low Power Consumption D FSK/OOK Operation D Integer-N Synthesizer With Fully Integrated Voltage Controlled Oscillator (VCO) D On-Chip Reference Oscillator and Phase-Locked Loop (PLL) D Power Amplifier With 8-dBm Typical Output Power SWRS023B − MAY 2004 − REVISED MARCH 2005 D Programmable Brownout Detector D Integrated Data Bit Synchronizer and Baud Rate Selection D Flexible 3-Wire Serial Interface D Minimal Number of External Components Required D 24-Pin Plastic Thin-Shrink Small Outline Package (TSSOP) D Programmable XTAL Trimming D Lock Detect Indicator D Companion Transmitter to the TRF6903 Transceiver TX_DATA MODE STDBY PA_OUT PA_GND1 PA_VCC PA_GND2 VCO_PRE_VCC VCO_GND VCO_CORE_VCC VCO_BYPASS VCO_TUNE PW PACKAGE (TOP VIEW) 1 24 2 23 3 22 4 21 5 20 6 19 7 18 8 17 9 16 10 15 11 14 12 13 CLOCK DATA STROBE GND XTAL_SW XTAL DGND DVDD DET_LD_DCLK CP_GND CP_OUT CP_VCC These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the gates. Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.

General Description

The TRF4903 single-chip solution is an integrated circuit intended f

Key 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, TX_frequency_0/TX_frequency_1; …) without reprogramming the device. ISM band standards Europe has assigned an unlicensed frequency band of 868 MHz to 870 MHz. This band is specifically defined for short range devices with duty cycles from 0.1% to 100% in several subbands. The new Europe.

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