XE1209

XE1209 Ultra Low Power CMOS Transceiver www.DataSheet4U.com XE1209 30 – 70 kH Ultra Low Power CMOS Transceiver GENERAL DESCRIPTION The XE1209 is a CMOS Ultra Low-Power transceiver for short-range low frequency RF data communications 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 composed 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 32kHz 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 component 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 RoHS compliant Rev 1 August 2005 www.semtech.com 1 XE1209 Ultra Low Power CMOS Transceiver 1 PIN DESCRIPTION www.DataSheet4U.com Pin # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Name TEST ...