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JRC - FM IF Demodulator IC / SSOP20

Numéro de référence NJM2552
Description FM IF Demodulator IC / SSOP20
Fabricant JRC 
Logo JRC 





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NJM2552 fiche technique
NJM2552
www.DataSheet4U.com
100MHz INPUT MIXER AND 450kHz FM/AM IF DEMODULATOR IC
GENERAL DESCRIPTION
The NJM2552 is a FM IF demodulator IC with 450kHz (standard)
IF input, which operates from 2.2V to 9V 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.
PACKAGE OUTLINE
NJM2552V
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+ =2.0V, 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
BLOCK DIAGRAM
MIX AM AGC RF AGC RSSI
IN V+ IN OUT OUT
20 19 18 17 16
AM AM AF
SW OUT
15 14
AM
DET
AMP
OUT
13
AM P
IN
12
FM AF
OUT
11
-A AMP
M IXER
RSSI
OSC
AMP
AGC
+-
AM AMP
+ FM AMP
-
FM
DET
1
OSC
(B)
2
OSC
(E)
3
MIX
OUT
4
GND
5
AM IF
IN
678
AM
DEC
FM IF IN
FM
DEC
9
FM IF
OUT
10
QUAD
IN
Ver.2006-11-06
-1-

PagesPages 21
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