[Melexis]

General Description
The TH7120 is a single chip FSK/FM/ASK transceiver IC. It is designed to operate in low-power multi-channel programmable or single-channel stand-alone, half-duplex data transmission systems. It can be used for ISM, SRD or any other application operating in the frequency ranging of 300 MHz to 930 MHz.

Features
❐ Single chip solution with only a few external components
❐ Stand-alone fixed-frequency transceiver operation modes
❐ Programmable multi-channel transceiver operation modes
❐ Low current consumption in active mode and very low standby current
❐ PLL-stabilized RF VCO (LO) with internal varactor diode
❐ Lock detection in programmable channel applications
❐ 3wire bus serial control interface
❐ FSK/ASK modulation selection
❐ FSK for digital data and FM for analog signal reception
❐ RSSI allows signal strength indication and ASK detection
❐ Switchable LNA gain for improved dynamic range
❐ Automatic PA turn-on after PLL lock
❐ FM possible with external varactor
❐ ASK modulation achieved by on/off keying
❐ AFC option for extended input frequency acceptance range
❐ Surface mount package LQFP32

Application Examples
❐ General bi-directional half duplex digital data transmission or analog signal transmission
❐ Low-power telemetry
❐ Alarm and security systems
❐ Keyless car and central locking
❐ Domotics
❐ Model control