LA7672中文资料三洋数据手册PDF规格书

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.

特性 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)

[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