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HA12203

Hitachi Semiconductor
Part Number HA12203
Manufacturer Hitachi Semiconductor
Description Audio Signal Processor
Published Mar 22, 2005
Detailed Description HA12203NT/HA12204NT Audio Signal Processor for Cassette Deck (Dolby B-type NR with Recording System) ADE-207-222B Targe...
Datasheet PDF File HA12203 PDF File

HA12203
HA12203

Overview
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 • Dolby B - NR* • REC equalizer • Music sensor • Pass amp.
2 × 2 channel × 2 channel × 1 channel × 2 channel • Each electronic control switch to change REC equalizer, bias, etc.
Note: 2.
HA12204NT is not built-in Dolby noise reduction system.
Features • REC equalizer is very small number of external parts and have 6 types of frequency characteristics 3 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, Normal / Crom / Metal* and PB equalizer fully electronic control switching built-in.
3 • Available to reduce substrate-area because of high integration and small external parts.
HA12203NT/HA12204NT Note: 3.
HA12204NT have 4 types of frequency characteristics.
Ordering Information Standard Level PB-OUT Product HA12203NT HA12204NT Package DP-42S Level 580mVrms REC-OUT Level 300mVrms Dolby Level 300mVrms — Operating Voltage Range VCC (V) +6.
0 to +7.
5 VEE (V) –7.
5 to –6.
0 Note | VCC + VEE | < 1.
0V Function Dolby B-NR ! Music Sensor ! ! Product HA12203NT HA12204NT REC-EQ ! ! Pass Amp.
! !...


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