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Part: HA12215F
Category:
Analog & Mixed-Signal Processing
-> Amplifiers
-> Audio/Power Amplifiers
Description: Audio Signal Processor For Cassette Deck ( Dolby B-type NR With Recording System )
Company: Hitachi Semiconductor (acquired by Renesas)
Datasheet: Download HA12215F datasheet File size : 423 kB
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Datasheet text preview:
HA12215F
Audio Signal Processor for Cassette Deck (Dolby B-type NR with Recording System)
ADE-207-253D (Z) Target Specification 5th Edition Oct. 1999 Description
HA12215F 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 · Music sensor · Pass amp. × 2 channel × 1 channel × 2 channel · REC equalizer × 2 channel
· Each electronic control switch to change REC equalizer, bias, etc.
Features
· REC equalizer is very small number of external parts and have 6 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 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. · Available to reduce substrate-area because of high integration and small external parts.
HA12215F
Ordering Information
Operating Voltage
Product HA12215F VCC (V) +6.0 to +7.5 VEE (V) 7.5 to 6.0 Note | VCC + VEE | < 1.0 V
Standard Level
Product HA12215F Package FP-56 PB-OUT Level 580 mVrms REC-OUT Level 300 mVrms Dolby Level 300 mVrms
Function
Music Sensor REC / PB Selection
Product HA12215F
Dolby B-NR
REC-EQ
Pass Amp.
ALC
Note: Depending on the employed REC / PB head and test tape characteristics, there is a rare case that the REC-EQ characteristics of this LSI can not be matched to the required characteristics because of built-in resistors which determined the REC-EQ parameters in this case, please inquire the responsible agent because the adjustment built-in resistor is necessary.
Rev.5, Oct. 1999, page 2 of 69
HA12215F
Pin Description, Equivalent Circuit (VCC = ±7 V, A system of split supply voltage, Ta = 25°C, No Signal, The value in the show typical value.)
Pin No. 51 Terminal Name AIN (R) Note V = GND Equivalent Circuit Pin Description PB A Deck input
V 100k GND
48 53 46 56 43 5 38 1
AIN (L) BIN (R) BIN (L) RIN (R) RIN (L) EQIN (R) EQIN (L) DET (R) V = VEE+2.7V VCC Time constant pin for Dolby-NR V = GND REC equalizer input V = GND REC input V = GND PB B Deck input
V
VEE 42 2 DET (L) BIAS1 V = VEE+0.6V Dolby bias current input
V
VEE
41
BIAS2
V = VEE+1.3V
REC equalizer bias current input
V
VEE
Rev.5, Oct. 1999, page 3 of 69
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