NJM2549 查看數據表（PDF） - Japan Radio Corporation
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NJM2549 Datasheet PDF : 18 Pages
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NJM2549
WIDE BAND FM IF DEMODULATOR
GENERAL DESCRIPTION
The NJM2549 is a wide band IF IC with a maximum
IF input frequency of 15 MHz.
It includes an IF Amplifier, Quadrature Detector, RSSI
and IF Balanced Output.
PACKAGE OUTLINE
MAIN APPLICATIONS
RF ID
Radar detector
Wireless Infrared Communication System
Voice Transmission System
A few MHz band Signal Detector
NJM2549RB2
FEATURES
Wide Range Operating Voltage
Low Operating Current
Wide Range IF Input Frequency
Wide Band FM Detector Range
RSSI Quick Response
High FM Detection Sensitivity
IF Amplifier with Balanced Output
Bipolar Technology
Package Outline
2.7V to 9V (recommended supply voltage)
3mA (standard)
10.7MHz (standard)
100kHz to 15MHz (reference value)
DC to 1MHz (reference value)
22dBuV (- 3dB Limiting Sensitivity)
TVSP10
BLOCK DIAGRAM
AF
OUT
10
QUAD
IN
9
IF
OUT1
8
IF
OUT2
7
RSSI
OUT
6
QUAD
DET
IF AMP
RSSI
1
2
3
4
5
V+
IF
IN
IF
IF
DEC1 DEC2
GND
Ver.2010-06-24
-1-
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