The IC is a very low power consumption single chip ASK Superheterodyne Receiver (SHR) for the frequency band 390MHz. The SHR offers a high level 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 synthesiser, a crystal oscillator, a limiter with RSSI generator, a data filter, a data comparator (slicer) and a peak detector. Additionally there is a power down feature to save battery life.

Features

Low supply current (Is = 4.8mA typ.)

Supply voltage range 5V ±10

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

Fully integrated VCO and PLL Synthesiser

RF input sensitivity < –110dBm

frequency band 390MHz

Selectable reference frequency

Limiter with RSSI generation, operating at 10.7MHz

2nd order low pass data filter with external capacitors

Data slicer with self-adjusting threshold

Temperature range -40°C...+85°C