NJM2259 데이터 시트보기 (PDF) - Japan Radio Corporation

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NJM2259

RF Modulator for UHF Band

Japan Radio Corporation  

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

-1-

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