GENERAL DESCRIPTION

The NJM2550 is a wide-operating voltage, low-current FM IF demodulator IC with 10.7MHz(standard) IF frequency. It includes a limiting amplifier, quadrature detector, filter amplifier, FSK/ASK(OOK) comparator, RSSI thermal characteristics correction, and quick charge circuit

The NJM2550 is suitable for low power, narrow band receiver for short range data/voice transmission by using IF=10.7MHz or IF/carrier frequency of up to 50MHz.

„FEATURES

 Wide Range Operating Voltage 2V to 9V

 Low Operating Current 4.4mA at V+=3V

 Wide Range IF Input Frequency 10.7MHz (standard)

                              5MHz to 50MHz (reference value)

 Wide Band FM Detector Circuit 1MHz (reference value)

 High-speed Transmission Rate 2Mbps (reference value)

 FSK/ASK (OOS) Comparator

 Two External Resistors to Adjust RSSI ‘s Thermal Characteristics

 Bipolar Technology

 Package Outline SSOP16