Description
PACKAGE OUTLINE The NJM2551 is a FM IF demodulator IC with 450MHz (standard) IF input, which operates from 1.8V supply.
It includes an oscillator, mixer, limiting amplifier, and FM/AM detectors.
BLOCK DIAGRAM
MIX IN 20 V+ 19 AM AGC RF AGC RSSI OUT OUT IN 18 17 16 AM SW 1
Features
- S z Low Operating Voltage 1.8V to 9.0V z Low Operating Current FM2.5mA at V+=2V AM4.0mA at V+=2V z Operating Frequency Up to 100MHz (reference value) z IF Input Frequency 450kHz (standard) z Bipolar Technology z Package Outline SSOP20
+
AMP
RSSI MIXER
OSC AMP
AGC
AM AMP
FM AMP
FM DET
1 OSC (B)
2 OSC (E)
3 MIX OUT
4 GND
5 AM IF IN
6 AM DEC
7 FM IF IN
8 FM DEC
9 FM IF OUT
10 QUAD IN
May 10,2004 NJR Corporation ver1.