TH72001 Datasheet | Melexis

Features Fully integrated PLL-stabilized LC VCO Frequency range of 290MHz to 350MHz Single-ended RF output FSK through crystal pulling allows modulation from DC to 40 kbit/s High FSK deviation possible for wideband data transmission Wide power supply range from 2.1 V to 5.5 V Very low standby current On-chip low voltage detector High over-all frequency accuracy FSK deviation and center frequency independently adjustable Adjustable output power range from -12 d Bm to +11 d Bm Adjustable current consumption from 3.2 m A to 10.3 m A Conforms to EN 300 220 and similar standards 8-pin Small Outline Integrated Circuit (SOIC) Ordering Code Product Code TH72001 TH72001 Temperature Code K K Package Code DC DC Option Code BAA-000 BAA-000 Packing Form Code RE TU Legend: Temperature Code: Package Code: Packing Form: Ordering example: K for Temperature Range -40° C to 125° C DC for SOIC RE for Reel, TU for Tube TH72001KDC-BAA-000-RE Application Examples General digital data transmission Tire Pressure Monitoring System (TPMS) Remote Keyless Entry (RKE) Low-power telemetry Alarm and security systems Garage door openers Home automation Pin Description FSKDTA 1 FSKSW 2 ROI 3 ENTX 4 TH72001 8 VEE 7 OUT 6 VCC 5 PSEL General Description The TH72001 FSK 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 at 290 to 350MHz. The transmitter's carrier frequency fc is determined by the frequency of the reference crystal fref. The integrated PLL synthesizer ensures that the radio frequency (RF) can be achieved by using a crystal with a reference frequency according to: fref = fc/N, where N = 32 is the PLL feedback divider ratio. 3901072001 Rev. 010 Page 1 of 20 Data Sheet Jun/12 315MHz FSK Transmitter Document Content 1 Theory of Operation ................................................................................................... 3 1.1 1.2 General...