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HA12228F fiches techniques PDF

Hitachi Semiconductor - Audio Signal Processor for Car Deck(Decode only Dolby B-type NR with PB Amp.)

Numéro de référence HA12228F
Description Audio Signal Processor for Car Deck(Decode only Dolby B-type NR with PB Amp.)
Fabricant Hitachi Semiconductor 
Logo Hitachi Semiconductor 





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HA12228F fiche technique
HA12228F/HA12229F
Audio Signal Processor for Car Deck
(Decode only Dolby B-type NR* with PB Amp.)
ADE-207-325A
2nd Edition
Dec. 2000
Description
HA12228F/HA12229F are silicon monolithic bipolar IC providing Dolby noise reduction system*, music
sensor, PB equalizer system in one chip.
Notes: 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.
2. HA12229F is not built-in Dolby B-NR.
Functions
PB equalizer
Music sensor
Dolby B-NR (Only HA12228F)
Line mute SW
× 2 channel
× 1 channel
× 2 channel
× 2 channel
Features
Different type of PB equalizer characteristics selection (120 µs/70 µs) is available with fully electronic
control switching built-in.
Easy interface with the PB head. (The PB-EQ resistance self-containing)
Changeable to Forward, Reverse-mode for PB head with fully electronic control switching built-in.
Available to change music sensing level by external resistor.
Available to change response of music sensor by external capacitor.
Music sensing level, built-in switch to change a band (MSGV).
NR ON/OFF fully electronic control switching built-in. (Only HA12228F)
Line mute control switching built-in.
Available to connect direct with MPU.
These ICs are strong for a cellular phone noise.

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