XE1209 Datasheet | SEMTECH

Ultra Low Power CMOS Transceiver .. - 70 k H Ultra Low Power CMOS Transceiver GENERAL DESCRIPTION The XE1209 is a CMOS Ultra Low-Power transceiver for short-range low frequency RF data munications system. It uses 2-level Continuous Phase FSK modulation. The receiver section includes the preamplifier, the down-converter, and the channel filters, the demodulator and the bit synchronizer, which delivers synchronized data at the output. The transmitter section is posed of a Direct Digital Synthesizer (DDS), and the power amplifier generating a square-wave output current. The XE1209 has carrier detector to detect the presence of a signal at the carrier frequency. The local clock is based on a 32k Hz crystal oscillator and a PLL to generate the required Local oscillator (LO) frequency. The XE1209 has a simple interface with an external microcontroller. KEY Features - - - - - - Single chip transceiver Low cost Low external ponent count Ultra Low Power Stand-by mode Carrier detection mode Low-power receiver mode Unlicensed frequency band Short range applications; 1 to 3 meters APPLICATIONS - Remote control - Short Range Wireless data - Access control ORDERING INFORMATION Part number XE1209C012TRLF Temperature range -10°C to +60° Package SO-20 Ro HS pliant Rev 1 August 2005 .semtech. Ultra Low Power CMOS Transceiver 1 PIN DESCRIPTION .. Pin # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Name TEST VSS QIN VDDA QOUT VSSA IREF VREF SUPTEST RE INA INB VSSPA PAOUT VDD DCLK DATA DE SD SC Description Test pin Ground for digital Xtal pin or input for external clock Supply voltage for analog Xtal pin Ground for analog Iref node for external resistance Vref node for external capacitance Test pin Receiver enable RF input signal RF input signal Ground for RF power amplifier RF power amplifier output Supply voltage for digital Received data clock output Input/output bit stream or output of the...