1. DESCRIPTION
The MRF620R is a compact, fully integrated OOK/ASK receiver for 433.92 MHz frequency band. It requires few external components. The MRF620R consists of a lownoise amplifier (LNA), image-rejection mixer (IRM), builtin channel-select filter (CSF), OOK/ASK demodulator, data filter, and data slicing comparator. The local oscillator (LO) sub-system incorporates a monolithic VCO, ÷32 feedback divider, loop filter and fast start-up reference oscillator to form a complete phase-locked loop-based frequency synthesizer for single channel applications.
The MRF620R is available in an 8-pin SOP package and is specified over the temperature range from –20 to +70 °C.

2. APPLICATIONS
Automotive Remote Keyless Entry (RKE)
Remote control
Garage door and gate openers
Suitable for applications that must adhere to either the European ETSI-300-220 or the North American FCC (Part 15) regulatory standards

3. FEATURES
Normal operating of 4.6 mA at 433.92 MHz
Requires few external components
Achieves sensitivity of –114 dBm (peak ASK signal level)
Supply voltage range: 2.2 to 5.5 V
Supports data rates up to 10 Kb/s
Wide input dynamic range with automatic gain control handling
Image-rejection ratio of 25 dB