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The IC is a very low power consumption single chip ASK Single Conversion Receiver for receive frequencies bands 868-870 MHz and 433-435 MHz. The IC offers a highlevel of integration and needs only a few external components. The device contains a low noise amplifier (LNA), a double balanced mixer,a fully integrated VCO, a PLL synthesizer, a crystal oscillator, a limiter with RSSI generator, a data filter, a datacomparator (slicer) and a peak detector. Additionally there is a power down feature to save battery life.

Features

? Low supply current (Is = 4.8 mA typ. at 868 MHz, Is = 4.6 mA typ. at 434 MHz)

? Supply voltage range 5 V ±10

? Power down mode with very low supply current (50 nA typ)

? Fully integrated VCO and PLL Synthesizer

? RF input sensitivity < – 107 dBm

? Selectable frequency ranges around 868-870 MHz and 433-435 MHz

? Selectable reference frequency

? Limiter with RSSI generation, operating at 10.7 MHz

? 2nd order low pass data filter with external capacitors

? Data slicer with self-adjusting threshold

Application

? Keyless Entry Systems

? Remote Control Systems

? Alarm Systems

? Low Bitrate Communication Systems