Audio Signal Processor
Description
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.
HA12228F/HA12229F
Ordering Information
Operating Voltage
Product HA12228F HA12229F Note: 1.
These ICs are designed to operate on single supply.
Min 6.
5 Max 12 Unit V
Standard Level
Product HA12228F HA12229F Package FP-40B PB-OUT Level 300 mVrms
Function
Product HA12228F HA12229F PB-EQ ❍ ❍ Music Sensor ❍ ❍ Mute ❍ ❍ Dolby B-NR ❍ ×
Rev.
2, Dec.
2000, page 2 of 51
HA12228F/HA12229F
Pin Description, Equivalent Circuit (VCC = 9 V single supply, Ta = 25°C, No Signal, The value in the table shows typical value.
)
Pin No.
13 Terminal Name MSI Note V = VCC/2 Equivalent Circuit Description MS input *
1
V 100 k VCC/2
4 27 23 *
2
TAI(L) TAI(R) DET(R...
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