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MITSUMI

Variable Gain Amplifier (built-in Y LPF, C BPF) MM1304

Variable Gain Amplifier (built-in Y LPF, C BPF)

Monolithic IC MM1304

Outline

This IC is a variable gain amp for video with built-in luminance low pass filter and chroma band pass filter. It

was developed as a post-filter for D/A converter latter position stage.

The sampling frequencies for the D/A converter are assumed to be 14.3MHz for chroma and 14.3MHz and

9.5MHz for luminance.

Features

1. Luminance LPF cutoff frequency can be selected and set at 5.4MHz and 4.4MHz. When set at 5.4MHz, use

in models that support S, and in normal models when set at 4.4MHz.

2. Chroma BPF center frequency can be selected and set at 3.58MHz (NTSC) and 4.4MHz (PAL).

3. Luminance variable gain range

-6dB~+6dB

Chroma variable gain range

-3dB~+9dB and ~1dB~13dB

4. Operating power supply voltage

4.5V~5.5V

5. Luminance S/N (unweight)

10kHz~4.2MHz : 47dB typ.

Package

SSOP-16A (MM1304XJ)

Applications

1. VCR with camera

2. Other video equipment

Equivalent Circuit Diagram

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