|
|
PDF NJM14570 Data sheet ( Hoja de datos )
| Número de pieza | NJM14570 | |
| Descripción | WIDE BAND FM IF DEMODULATOR | |
| Fabricantes | New Japan Radio | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de NJM14570 (archivo pdf) en la parte inferior de esta página. Total 14 Páginas | ||
|
No Preview Available !
NJM14570
WIDE BAND FM IF DEMODULATOR
GENERAL DESCRIPTION
The NJM14570 is a wide band IF IC with a maximum
IF input frequency of 15 MHz.
It includes an IF Amplifier, Quadrature Detector and RSSI.
PACKAGE OUTLINE
MAIN APPLICATIONS
RF ID
Radar detector
Wireless Infrared Communication System
Voice Transmission System
A few MHz band Signal Detector
NJM14570RB1
FEATURES
Wide Range Operating Voltage
Low Operating Current
Wide Range IF Input Frequency
Wide Band FM Detector Range
High FM Detection Sensitivity
Package Outline
1.8V to 9V (recommended supply voltage)
2.9mA ( Typ., No Signal )
10.7MHz ( Standard )
up to 15MHz ( Reference )
DC to 1MHz ( Reference )
-87dBm ( 12dB SINAD, typ. )
MSOP8 ( TVSP ) *
*JEDEC MO-187-DA / thin type
BLOCK DIAGRAM
DECOUPLE2 DECOUPLE1 GND
876
GND
IF IN
5
IF
AMP
Ver.2014-12-24
12
DET OUT QUAD COIL
RSSI
V+
34
V+ RSSI OUT
-1-
1 page  
TERMINAL FUNCTION
(Ta = 25°C, V+ = 3V, No signal )
Pin No. SYMBOL
EQUIVARENT CIRCUIT
3
1 DET OUT
80
1
NJM14570
VOLTAGE
FUNCTION
1.5V FM Detector Output
2 QUAD COIL
3 V+
6 GND
6
3
30k
20
2
2p
6
3
FM Detector Input
3.0V Connection for the phase
shift circuit.
3.0V Supply Voltage
0.0V GND Terminal
6
3
4 RSSI OUT
80
10.2k
6
3
5
5 IF IN
7 DECOUPLE1 7
8 DECOUPLE2
8
6
330
100k
Received Signal Strength
Indicator Output
4 -- Pin4 outputs DC level
proportional to the log of
pin5 input signal level.
5pin: IF Amplifier Input
7,8pin: IF Decoupling
An external decoupling
capacitor is connected to
2.6V enhance stability.
330 The bandwidth of IF
100k
Amplifier can be adjusted.
Large capacity: wide band
Small capacity: narrow band
Ver.2014-12-24
-5-
5 Page 
NJM14570
DETECTOR Output Transient Response
Ta = 25°C, V+ = 3V, IF IN = 10.7MHz / -30dBm, fdev = ± 50kHz, fmod = 1kHz, unless otherwise noted
Rise
5.0 4.5
4.0 4.0
V+
3.0 3.5
2.0 3.0
1.0
DET OUT
Vin = -30dBm ( mod. ON )
2.5
0.0 2.0
-1.0 1.5
-2.0 1.0
No input
-3.0 0.5
-4.0 0.0
-5.0 -0.5
-1.0 0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0
Time ( msec )
Fall
5.0 4.5
4.0 4.0
3.0 3.5
2.0 3.0
1.0 V+ 2.5
0.0 2.0
-1.0 1.5
-2.0 1.0
DET OUT
-3.0 0.5
-4.0 0.0
-5.0 -0.5
-1.0 0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0
Time ( msec )
AM Demodulation output characteristics by using the RSSI output
Ta = 25°C, V+ = 3V, IF IN = 10.7MHz / -50dBm, AM mod. = 80%, fmod = 10kHz, unless otherwise noted
C
4
AM OUT
AM Demodulation Voltage
vs. Modulating Frequency
1000
1000
AM Demodulation Voltage
vs. IF Input Level
C = 1000pF
100
C = 15pF
10
1K
C = 1000pF
10K 100K 1M
10M
AM Modulation Frequency fmod ( kHz )
100
10
-120 -100 -80 -60 -40 -20
IF Input Level ( dBm )
0
20
Ver.2014-12-24
- 11 -
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet NJM14570.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| NJM14570 | WIDE BAND FM IF DEMODULATOR | New Japan Radio |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |