KESRX01

The KESRX01 is a single chip ASK (Amplitude Shift Key) Receiver IC. It is designed to operate in a variety of low power radio applications including keyless entry, general domestic and industrial remote control, RF tagging and local paging systems.

This single conversion superheterodyne receiver offers an exceptionally high level of integration and performance. The unique architecture enables data rates up to 50Kbits/sec to be supported. All low power radio regulations, including ETSIETS 300 220, and FCC, part 15, can easily be met. Local oscillator generation is performed by an onchip PLL which uses an external crystal reference oscillator (4.5 to 7.2MHz). All popular radio frequencies (315MHz, 433.92MHz,  etc) can then be supported by simply choosing the appropriate crystal frequency.

Particular emphasis has been placed on low current consumption, with pulsed ON/OFF operation allowing <1mA average current consumption to be achieved. The onchip VCO and IF significantly minimise the external components needed thus reducing any reradiation effects.