LA7289 Overview
EN5642 Monolithic Linear IC LA7289 VCR Audio Signal Record and Playback Processor Overview The LA7289 includes on chip all functions required for the record and playback of VCR audio signals and achieves plete adjustment-free operation by the adoption of an automatic record bias current adjustment circuit. In addition, the inclusion of a switching circuit for switching between tuner and line input in addition to the...
LA7289 Key Features
- Adjustment-free record bias current (automatic adjustment circuit adopted)
- Built-in record bias oscillator circuit power supply switch
- Record equalizer choke coil no longer required
- Playback amplifier input noise voltage: 1.0 µV rms
- Value of the ALC detector capacitor reduced (to 3.3 µF)
- Built-in high-voltage head switching circuit
- Supply voltage: supports both 9 and 12-V operation
- Built-in input switching circuit (for the line and tuner inputs)
- Equalizer amplifier Ripple filter Record/playback switching circuit Muting SP/LP/EP switching circuit Record amplifier A