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HA12209

Audio Signal Processor for Cassette Deck (Dolby B-type NR with Recording System)

Hitachi -> Renesas Electronics 

HA12209F

Audio Signal Processor for Cassette Deck

(Dolby B-type NR with Recording System)

ADE-207-221A (Z)

2nd Edition

Jun. 1999

Description

HA12209F is silicon monolithic bipolar IC providing Dolby noise reduction system*, music sensor system,

REC equalizer system and each electronic control switch in one chip.

Functions

• Dolby B-NR × 2 channel

• REC equalizer × 2 channel

• Music sensor × 1 channel

• Each electronic control switch to change REC equalizer, bias, etc.

Features

• REC equalizer is very small number of external parts and have 4 types of frequency characteristics

built-in.

• 2 types of input for PB, 1 type of input for REC.

• 70µ-PB equalizer changing system built-in.

• Dolby NR with dubbing double cassette decks.

Unprocessed signal output available from recording out terminals during PB mode.

• Provide stable music sensor system, available to design music sensing time and level.

• Controllable from direct micro-computer output.

• Bias oscillator control switch built-in.

• NR ON/OFF and REC/PB fully electronic control switching built-in.

• Normal-speed/high-speed, TYPE I/TYPE II and PB equalizer fully electronic control switching built-in.

• Available to reduce substrate-area because of high integration and small external parts.

*

Dolby is a trademark of Dolby Laboratories Licensing Corporation.

A license from Dolby Laboratories Licensing Corporation is required for the use of this IC.

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