GENERAL DESCRIPTION
The NJM2552 is a FM IF demodulator IC with 450kHz (standard) IF input, which operates from 2.2V to 9.0V supply. It includes an oscillator, mixer, limiting amplifier, FM/AM detectors, and RSSI circuit.
The NJM2552 is suitable for FM /AM receivers for data / voice radio systems.
   
FEATURES
■ Wide Operating Voltage 2.2V to 9.0V
■ Low Operating Current FM: 2.5mA at V+=2.7V, AM SW =LOW.  AM and FM: 5mA at V+=2.7V, AM SW =HIGH.
■ Maximum Mixer Input Frequency 100MHz (reference value)
■ IF Frequency 450kHz (standard)
■ AM/FM detector circuits selectable.
    AM SW= HIGH Simultaneous operation of AM/FM sections.
    AM SW= LOW FM section only.
■ Built-in AGC circuit in AM section
■ Wide Range RSSI (Received Signal Strength Indication)
■ Bipolar Technology
■ Package Outline SSOP20