TH72002

TH72002 315MHz ASK Transmitter Features ! Fully integrated PLL-stabilized VCO ! Frequency range from 290 MHz to 350 MHz ! Single-ended RF output ! ASK achieved by on/off keying of internal power amplifier up to 40 kbit/s ! Wide power supply range from 1.95 V to 5.5 V ! Very low standby current ! On-chip low voltage detector ! High over-all frequency accuracy ! Adjustable output power range from -12 dBm to +11 dBm ! Adjustable current consumption from 3.2 mA to 10.3 mA ! Conforms to FCC part 15 and similar standards ! 8-pin Small Outline Integrated Circuit (SOIC) Ordering Information Part Number Temperature Code TH72002 K (-40°C to 125°C) Package Code DC (SOIC8) Delivery Form 98 pc/tube 2500 pc/T&R Application Examples ! General digital data transmission ! Tire Pressure Monitoring Systems (TPMS) ! Remote Keyless Entry (RKE) ! Wireless access control ! Alarm and security systems ! Garage door openers ! Remote Controls ! Home and building automation ! Low-power telemetry systems Pin Description ASKDTA 1 n. c. 2 ROI 3 ENTX 4 TH72002 8 VEE 7 OUT 6 VCC 5 PSEL General Description The TH72002 ASK transmitter IC is designed for applications in the 315 MHz industrial-scientific-medical (ISM) band. It can also be used for any other system with carrier frequencies ranging from 290 MHz to 350 MHz. The transmitter's carrier frequency fc is determined by the frequency of the reference crystal fref. The integrated PLL synthesizer ensures that carrier frequencies, ranging from ...