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PDF NJM2549 Data sheet ( Hoja de datos )
| Número de pieza | NJM2549 | |
| Descripción | WIDE BAND FM IF DEMODULATOR | |
| Fabricantes | New Japan Radio | |
| Logotipo |  |
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NJM2549www.DataSheet4U.com
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
Ver.2010-06-24
12345
V+
IF
IN
IF IF
DEC1 DEC2
GND
-1-
1 page  
Test Circuit 3 for Terminal Resistance
NJM2549www.DataSheet4U.com
10 9 8 7 6
QUAD
DET
IF AMP
RSSI
12345
Test Circuit 4 for IF Amplifier
Ver.2010-06-24
C7
0.01u
Oscilloscope
A
V+ 0.01uF
T1 Selector
C6
A 82p
R2
2.4k
10 9 8 7
15kΩ
6
QUAD
DET
IF AMP
RSSI
1234
C1
0.01u
C2
0.01u
C3
0.01u
C9 C8 R1
10u
0.01u
51
Zo=50
IF IN
5
T1:4CJH(Sample No.:080293006)
SAGAMI ELEC CO., LTD. (Japan)
-5-
5 Page 
PRINTED CIRCUIT BOARD
Circuit Side View
NJM2549www.DataSheet4U.com
IC1
NJM
2549
C4
Ground Side View
+
C9
Ver.2010-06-24
- 11 -
11 Page | ||
| Páginas | Total 18 Páginas | |
| PDF Descargar | [ Datasheet NJM2549.PDF ] | |
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