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Número de pieza | NJM2259 | |
Descripción | Modulation / DMP16 | |
Fabricantes | JRC | |
Logotipo | ||
Hay una vista previa y un enlace de descarga de NJM2259 (archivo pdf) en la parte inferior de esta página. Total 7 Páginas | ||
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NJM2259
RF Modulator for UHF Band
DESCRIPTION
The NJM2259 is a RF modulator IC especially designed for UHF
band RF modulator and consists of video clamp circuit, white clip
circuit, video AM modulator and audio FM modulator, built into one
chip.
FEATURES
• Operating Voltage 5V
• Picture-to-sound ratio is adjustable
• Audio ripple is decreased by two internal regulators
• Audio input circuit with low shock noise
• Carrier-off switch function on chip
• Bipolar Technology
• Package Outline : DMP16
BLOCK DIAGRAM
PACKAGE OUTLINE
NJM2259M
16 15 14 13 12 11 10
9
AUDIO
SUBCARRIER
MODULATOR
LPF
REGULATOR
VIDEO
CLAMP
WHITE
CLIP
RF
MIXER
RF OSCILLATOR
REGULATOR
12345678
-1-
1 page www.DataSheet4U.com
No. Symbol
12 VCC 1
13 P/S Adj.
14 TANK 2
15 TANK 1
Typ. DC
Voltage (V)
-
3.55
TANK 1: H
2.80
TANK 1: L
H : 3.60
L : 2.85
H : 3.60
L : 2.85
16 AUDIO IN
-
Equivalent Circuit
NJM2259
Function
Power Supply
Picture-to-sound
Ratio Adjust
Sound FM
Modulation Circuit
Audio Signal Input
-5-
5 Page |
Páginas | Total 7 Páginas | |
PDF Descargar | [ Datasheet NJM2259.PDF ] |
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