TH71082

TH71082 868/915MHz ASK Transmitter / LO Source Features ! Fully integrated, PLL-stabilized VCO ! Flexible frequency range from 800 MHz to 930 MHz ! ASK achieved by on/off keying of internal power amplifier ! FM possible with external varactor ! Wide power supply range from 2.2 V to 5.5 V ! High over-all frequency accuracy ! Very low standby current ! ! ! ! ! Adjustable output power range from -18 dBm to -2 dBm Adjustable current consumption from 6.2 mA to 12.5 mA Single-ended RF output Clock output for µC drive Conforms to EN 300 220 and similar standard Ordering Information Part No. TH71082 Temperature Range -40 C° to 85 °C Package SOIC8 Application Examples ! ! ! ! ! ! Keyless car and central locking Low-power telemetry Alarm and security systems General digital data transmission General analog audio signal transmission Local oscillator signal generation Pin Description LF 1 8 VEE RO 2 ENTX 3 CKOUT 4 TH71082 7 OUT 6 VCC 5 PS/DATA TH71082 Data Sheet 3901071082 Page 1 of 10 Dec. 2001 Rev. 004 TH71082 868/915MHz ASK Transmitter / LO Source General Description The TH71082 ASK transmitter IC is designed for applications in the European 868MHz industrialscientific-medical (ISM) band, according to the EN 300 220 telecommunications standard. It can also be used for any other system with carrier frequencies ranging from 800 MHz to 930 MHz (e.g. for applications in the US 915MHz ISM band). The transmitter's carrier frequency fc is determined by the frequency of the referenc...