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LA7672

Color TV Single-Chip Signal Processor for NTSC Systems (PLL Detection)

SANYO -> Panasonic 

Ordering number : ENN4265A

Monolithic Linear IC

LA7672

Color TV Single-Chip Signal Processor for

NTSC Systems (PLL Detection)

Overview

The LA7672 is a single-chip IC for color TVs based on

the NTSC system with on-chip circuit for all VIF, SIF,

video, chroma and deflection signal processing.

Features

[VIF]

• PLL detection (high video and audio quality)

• High-gain VIF amplifier

• High speed AGC

• On-chip APC time constant switch

[SIF]

• Simultaneous sound IN/OUT

• Video/audio simultaneous muting, or audio-only muting

possible

[Audio-visual switch]

• Internal/external audio-visual switch (VCC = 9 V)

Delay line Video external, audio external Switch rating

OFF

IN

6.9 to 9.0 V

OFF

EXT

4.7 to 6.6 V

ON

EXT

2.4 to 4.3 V

ON

IN

0 to 2.1 V

[OSD]

• RGB 3 input

• RGB linear up (– 6 dB input: 2 V to 5 V)

• Fast blanking (B input combined use)

[Chroma]

• On-chip ACC filter, On-chip killer filter, Killer-circuit

hysteresis operation

• On-chip carrier filter

[Video]

• Black enhancement

• On-chip delay line

• Wide band width (9 MHz): delay line short

• Duel rank on-chip differentiation circuit also available

for soft also

• S input supported (VCR application)

• Variable DC transmission volume available (externally

attached circuit adjustment)

[Deflection]

• Adjustment-free horizontal, vertical synchronization

• Duel AFC system with excellent anti-noise

characteristics

• External adjustment of vertical synchronization

sensitivity

• Vertical size is constant with no-signal

• Highly stable image during playback of copy protected

tapes (macro-vision tape)

• High stability against VCR skew distortion

Package Dimensions

unit : mm

3128-DIP52S

[LA7672]

52

27

1

26

46.0

0.48

1.05

1.78 0.75

SANYO: DIP52S

Any and all SANYO products described or contained herein do not have specifications that can handle

applications that require extremely high levels of reliability, such as life-support systems, aircraft’s

control systems, or other applications whose failure can be reasonably expected to result in serious

physical and/or material damage. Consult with your SANYO representative nearest you before using

any SANYO products described or contained herein in such applications.

SANYO assumes no responsibility for equipment failures that result from using products at values that

exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other

parameters) listed in products specifications of any and all SANYO products described or contained

herein.

SANYO Electric Co.,Ltd. Semiconductor Company

TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN

D2599TH (OT)/O202TS No. 4265-1/6

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