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*
1
,
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.
Functions
Dolby B-NR*
2
2 channel
REC equalizer
2 channel
Music sensor
1 channel
Pass amp.
2 channel
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.
70
- PB equalizer changing system built-in.
Dolby NR*
2
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 and PB equalizer fully electronic control switching built-in.
Available to reduce substrate-area because of high integration and small external parts.
HA12226F/HA12227F
Rev.6, Dec. 2000, page 2 of 86
Ordering Information
Operating Voltage
Product
Power Supply Range (Single Supply)
HA12226F
11.0 V to 15.0 V
HA12227F
9.5 V to 15.0 V
Standard Level
Product
Package
PB-OUT Level
REC-OUT Level
Dolby Level
HA12226F
FP-56A
580 mVrms
300 mVrms
300 mVrms
HA12227F
Function
Product
Dolby B-NR
REC-EQ
Music
Sensor
Pass Amp.
REC / PB
Selection
ALC
HA12226F
HA12227F
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
Supply Voltage
NORM
CROM
METAL
HA12226F/HA12227F
Single supply voltage
HA12215F
Split supply voltage
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.
HA12226F/HA12227F
Rev.6, Dec. 2000, page 3 of 86
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.
Terminal Name
Note
Equivalent Circuit
Pin Description
51
AIN (R)
V = V
CC
/ 2
V
CC
/2
V
100k
PB A Deck input
48
AIN (L)
53
BIN (R)
PB B Deck input
46
BIN (L)
56
RIN (R)
REC input
43
RIN (L)
5
EQIN (R)
REC equalizer input
38
EQIN (L)
1 *
2
DET (R)
V = 2.7 V
V
CC
GND
V
Time constant pin for
Dolby-NR
42 *
2
DET (L)
49
RIP
Ripple filter
2 *
3
BIAS1
V = 0.6 V
GND
V
Dolby bias current
input
41
BIAS2
V = 1.3 V
GND
V
REC equalizer bias
current input
HA12226F/HA12227F
Rev.6, Dec. 2000, page 4 of 86
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.
Terminal Name
Note
Equivalent Circuit
Pin Description
3
PBOUT (R)
V = V
CC
/ 2
V
CC
GND
V
PB output
40
PBOUT (L)
4
RECOUT (R)
REC output
39
RECOUT (L)
7
EQOUT (R)
REC equalizer output
36
EQOUT (L)
28
MAOUT
MS Amp. output *
1
8
ROUT (R)
Input Amp. output
35
ROUT (L)
52
ABO (R)
R1 = 15 k
R2 = 12 k
V = V
CC
/ 2
V
CC
GND
R2
R1
V
Time constant pin for
PB equalizer (70
)
47
ABO (L)
6
BOOST (R)
R1 = 4.8 k
R2 = 4.8 k
V = V
CC
/ 2
Time constant pin for
low boost
37
BOOST (L)
32
BIAS (C)
V = V
CC
-
0.7 V
V
CC
V
REC bias current
output
33
BIAS (N)
HA12226F/HA12227F
Rev.6, Dec. 2000, page 5 of 86
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.
Terminal Name
Note
Equivalent Circuit
Pin Description
21
V
CC
V = V
CC
Power supply
50
GND
V = 0 V
GND pin
31, 45, 54
NC
No connection
No connection
15
ALC
ON
/OFF
I = 20
A
22 k
GND
V
I
100 k
Mode control input
16
PB
A
/B
17
A
120
/70
18
NORM
/HIGH
19
B
NORM
/CROM
20
BIAS ON/
OFF
22
RM
ON
/OFF
23 *
2
NR ON/
OFF
25
LM ON/
OFF
24
REC
/PB/PASS
2.5 V
100 k
100 k
-
+
V
22 k
Mode control input
26
MSOUT
I = 0
A
V
I
V
CC
D GND
MS output (to MPU) *
1
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