Overview

The LA3242 is a preamp IC for compact cassette recorder recording-only use. The distinctive feature of the LA3242 is that it contains mechanical switches which have been so far connected externally as peripheral parts.

Features

• On-chip electronic select switches permitting selection of normal/higher speed recording and metal(chrome)/normal tape recording mode by using the dedicated control pins.

• Two ALC output pins making it easy to make up a Dolby recording system.

• The control voltage from a microcomputer, etc. can be used to turn ON/OFF the ALC and to set the ALC control voltage to the initial value.

• On-chip microphone amplifier making it easy to provide microphone mixing.

• Wide operating voltage range (VCC = 4.5 to 14.0 V).

• Can be used in conjunction with playback-only preamp LA3246 to make up a double-cassette dubbing system.

Functions

• Recording preamplifier ×2

• Microphone amplifier ×1

• ALC output ×2

• Electronic switch ×6