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HA12226F Datasheet(PDF) 1 Page - Hitachi Semiconductor

Part No. HA12226F
Description  Audio Signal Processor for Cassette Deck(Dolby B-type NR with Recording System)
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Manufacturer  HITACHI [Hitachi Semiconductor]
Direct Link  http://www.renesas.com/eng
Logo HITACHI - Hitachi Semiconductor

HA12226F Datasheet(HTML) 1 Page - Hitachi Semiconductor

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HA12226F/HA12227F
Audio Signal Processor for Cassette Deck
(Dolby B-type NR with Recording System)
ADE-207-270E (Z)
6th Edition
Dec. 2000
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.


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