HA12226F/HA12227F
Audio Signal Processor for Cassette Deck
(Dolby B-type NR with Recording System)
ADE-207-270E (Z)
6th Edition
Dec. 2000
Description
The HA12226F/HA12227F are 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.
The HA12227F is not built-in Dolby B-NR.
1
Functions
•
Dolby B-NR*
•
Music sensor
•
Pass amp.
2
×
2 channel
×
2 channel
×
1 channel
×
2 channel
•
REC equalizer
•
Each electronic control switch to change REC equalizer, bias, etc.
Note: 2. The HA12227F is not built-in Dolby B-NR.
Features
•
REC equalizer is very small number of external parts and have 4 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.
2
•
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 and PB equalizer fully electronic control switching built-in.
•
Available to reduce substrate-area because of high integration and small external parts.
HA12226F/HA12227F
Ordering Information
Operating Voltage
Product
HA12226F
HA12227F
Power Supply Range (Single Supply)
11.0 V to 15.0 V
9.5 V to 15.0 V
Standard Level
Product
HA12226F
HA12227F
Package
FP-56A
PB-OUT Level
580 mVrms
REC-OUT Level
300 mVrms
Dolby Level
300 mVrms
Function
Music
Sensor
❍
❍
REC / PB
Selection
❍
❍
Product
HA12226F
HA12227F
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.
Difference of HA12215F and HA12226F/HA12227F
Tape Correspondence
Product
HA12226F/HA12227F
HA12215F
Supply Voltage
Single supply voltage
Split supply voltage
NORM
❍
❍
CROM
❍
❍
METAL
×
❍
Note: The HA12226F/HA12227F became single power supply for the HA12215F and deleted metal
correspondence. The HA12227F is not built-in Dolby B-NR.
Other characteristic aspects are similar as the HA12215F.
Rev.6, Dec. 2000, page 2 of 86
HA12226F/HA12227F
Pin Description, Equivalent Circuit
(V
CC
= 12 V, A system of single supply voltage,
Ta = 25°C, No Signal, The value in the show typical value.)
Pin No.
51
Terminal Name
AIN (R)
Note
V = V
CC
/ 2
Equivalent Circuit
Pin Description
PB A Deck input
V
100k
V
CC
/2
48
53
46
56
43
5
38
1*
2
AIN (L)
BIN (R)
BIN (L)
RIN (R)
RIN (L)
EQIN (R)
EQIN (L)
DET (R)
V = 2.7 V
V
CC
PB B Deck input
REC input
REC equalizer input
Time constant pin for
Dolby-NR
V
GND
42 *
49
2*
3
2
DET (L)
RIP
BIAS1
V = 0.6 V
Ripple filter
Dolby bias current
input
V
GND
41
BIAS2
V = 1.3 V
REC equalizer bias
current input
V
GND
Rev.6, Dec. 2000, page 3 of 86
HA12226F/HA12227F
Pin Description, Equivalent Circuit
(V
CC
= 12 V, A system of single supply voltage,
Ta = 25°C, No Signal, The value in the show typical value.) (cont)
Pin No.
3
Terminal Name
PBOUT (R)
Note
V = V
CC
/ 2
Equivalent Circuit
V
CC
Pin Description
PB output
V
GND
40
4
39
7
36
28
8
35
52
PBOUT (L)
RECOUT (R)
RECOUT (L)
EQOUT (R)
EQOUT (L)
MAOUT
ROUT (R)
ROUT (L)
ABO (R)
R1 = 15 k
R2 = 12 k
V = V
CC
/ 2
V
R1
R2
V
CC
REC output
REC equalizer output
1
MS Amp. output *
Input Amp. output
Time constant pin for
PB equalizer (70µ)
GND
47
6
ABO (L)
BOOST (R)
R1 = 4.8 k
R2 = 4.8 k
V = V
CC
/ 2
V = V
CC
−
0.7 V
V
CC
Time constant pin for
low boost
37
32
BOOST (L)
BIAS (C)
REC bias current
output
V
33
BIAS (N)
Rev.6, Dec. 2000, page 4 of 86
HA12226F/HA12227F
Pin Description, Equivalent Circuit
(V
CC
= 12 V, A system of single supply voltage,
Ta = 25°C, No Signal, The value in the show typical value.) (cont)
Pin No.
21
50
31, 45, 54
15
Terminal Name
V
CC
GND
NC
ALC
ON/OFF
Note
V = V
CC
V=0V
No connection
I = 20
µA
V
22 k
100 k
GND
I
Equivalent Circuit
Pin Description
Power supply
GND pin
No connection
Mode control input
16
17
18
19
20
22
23 *
25
24
2
PB
A/B
A
120/70
NORM/HIGH
B
NORM/CROM
BIAS ON/OFF
RM
ON/OFF
NR ON/OFF
LM ON/OFF
REC/PB/PASS
2.5 V
+
−
100 k
Mode control input
100 k
22 k
V
26
MSOUT
I = 0
µA
V
V
CC
I
MS output (to MPU) *
1
D GND
Rev.6, Dec. 2000, page 5 of 86
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