HA12227F データシートの表示（PDF） - Renesas Electronics

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HA12227F

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

Renesas Electronics 

HA12226F/HA12227F

Audio Signal Processor for Cassette Deck

(Dolby B-type NR with Recording System)

REJ03F0133-0600

Previous: ADE-207-270E

Rev.6.00

Jun 15, 2005

Description

The HA12226F/HA12227F are silicon monolithic bipolar IC providing Dolby noise reduction system*1, music sensor

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

Note: 1. Dolby is a trademark of Dolby Laboratories Licensing Corporation.

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

The HA12227F is not built-in Dolby B-NR.

Functions

• Dolby B-NR*2

× 2 channel

• REC equalizer

× 2 channel

• Music sensor

× 1 channel

• Pass amp.

× 2 channel

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

Note: 2. The HA12227F is not built-in Dolby B-NR.

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*2 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, Normal / Crom and PB equalizer fully electronic control switching built-in.

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

Rev.6.00 Jun 15, 2005 page 1 of 83

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