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HA12203NT Datasheet

  • HA12203NT

  • Audio Signal Processor for Cassette Deck(Dolby B-type NR wit...

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HA12203NT/HA12204NT
Audio Signal Processor for Cassette Deck
(Dolby B-type NR with Recording System)
ADE-207-222B
Target Specification
3rd Edition
Jun. 1999
Description
HA12203NT is silicon monolithic bipolar IC providing Dolby noise reduction system* , 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.
1
Functions
鈥?/div>
Dolby B - NR*
鈥?/div>
REC equalizer
鈥?/div>
Music sensor
鈥?/div>
Pass amp.
2
2 channel
2 channel
1 channel
2 channel
鈥?/div>
Each electronic control switch to change REC equalizer, bias, etc.
Note: 2. HA12204NT is not built-in Dolby noise reduction system.
Features
鈥?/div>
REC equalizer is very small number of external parts and have 6 types of frequency characteristics
3
built-in.*
鈥?/div>
2 types of input for PB, 1 type of input for REC.
鈥?/div>
70碌 - PB equalizer changing system built-in.
鈥?/div>
Dolby NR with dubbing double cassette decks.
Unprocessed signal output available from recording out terminals during PB mode.
鈥?/div>
Provide stable music sensor system, available to design music sensing time and level.
鈥?/div>
Controllable from direct micro-computer output.
鈥?/div>
Bias oscillator control switch built-in.
鈥?/div>
NR ON / OFF and REC / PB fully electronic control switching built-in.
鈥?/div>
Normal-speed / high-speed, Normal / Crom / Metal* and PB equalizer fully electronic control
switching built-in.
3
鈥?/div>
Available to reduce substrate-area because of high integration and small external parts.

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