Overview

The LA7411 and LA7411M are playback and record amplifier IC for two-head VHS VCRs. When used in conjunction with the video signal processing ICs of the LA7420/30 series, it is possible to eliminate the need to adjust the Y/C record current.

Features

• The record amplifier provides stable record characteristics in

constant current drive mode, which is able to withstand load

fluctuations. In addition, the built-in AGC eliminates the

need to adjust the record current.

• Designed to share printed circuit boards with the

LA7416/7416M (for 4-head systems).

Functions

• 2-channel playback amplifier.

• 1-channel record amplifier.

• REC/PB mode switching head switch circuit.

• Envelope wave detection (for auto-tracking).