NJM2259 Datasheet, PDF (1/7 Pages) New Japan Radio – RF Modulator for UHF Band

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
1
2
3
4
5
6
7
8
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