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Электронный компонент: HA12230

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HA12230NT
Audio Signal Processor for Cassette Deck
ADE-207-322E (Z)
6th Edition
Nov. 2000
Description
HA12230NT is silicon monolithic bipolar IC providing PB equalizer, REC equalizer system and each
electronic control switch in one chip.
Functions
PB equalizer
2 channel
REC equalizer
2 channel
MS use Mixing Amp.
Each electronic control switch to change tape type and mute etc.
REC mute
REC head return switch
Line Amp.
Line mute
Features
REC equalizer is very small number of external parts, built-in 2 types of frequency characteristics
PB equalizer circuit built-in
REC/PB are possible with TYPE I/II
Controllable from direct micro-computer output
Available to reduce substrate-area because of high integration and small external parts
HA12230NT
Rev.6, Nov. 2000, page 2 of 32
Pin Description, Equivalent Circuit
(V
CC
= 12 V, Ta = 25C, No signal, The value in the table show typical value.)
Pin No.
Pin Name
Note
Equivalent Circuit
Pin Description
17
V
CC
V = V
CC
V
CC
pin
16
RECOUT(L)
V = V
CC
/2
V
CC
GND
REC-EQ output
15
RECOUT(R)
10
MAOUT
MS Amp. output
1
VREF
Reference
30
REC-RETURN
V = V' = V
CC
/2
GND
V
CC
I
V
30
pin 3, pin 29
V
,
REC return
29
BIN(L)
PB B deck input
3
BIN(R)
28
AIN(L)
V = V
CC
/2
PB-NF
V
CC
PB A deck input
4
AIN(R)
11
MAI
V = V
CC
/2
100 k
V
MAOUT
V
CC
V
CC
/2
45 k
MS Amp. input
HA12230NT
Rev.6, Nov. 2000, page 3 of 32
Pin Description, Equivalent Circuit
(V
CC
= 12 V, Ta = 25C, No signal, The value in the table show typical value.) (cont)
Pin No.
Pin Name
Note
Equivalent Circuit
Pin Description
23
PBOUT(L)
V = V
CC
/2
V
CC
V
GND
PB output
9
PBOUT(R)
25
EQOUT(L)
EQ output (120
)
7
EQOUT(R)
26
PB-EQ(L)
V = V
CC
/2
V
CC
V
EQOUT
GND
EQ output (70
)
6
PB-EQ(R)
13
RECIN(R)
V = V
CC
/2
100 k
V
CC
V
CC
/2
REC-EQ input
18
RECIN(L)
24
TAI(L)
Tape input
8
TAI(R)
19
MUTE
I = 20
A
GND
22 k
V
CC
I
100 k
Mode control input
20
A
120
/70
21
A/
B
22
B
I
/
II
HA12230NT
Rev.6, Nov. 2000, page 4 of 32
Pin Description, Equivalent Circuit
(V
CC
= 12 V, Ta = 25C, No signal, The value in the table show typical value.) (cont)
Pin No.
Pin Name
Note
Equivalent Circuit
Pin Description
12
IREF
V = 1.2 V
Equalizer
reference current
input
2
GND
GND pin
27
PB-NF(L)
PB-IN = Vref
180
330 k
V
CC
PB-IN
7
PB EQ feed back
5
PB-NF(R)
14
RIP
PBOUT = Vref
GND
V
CC
V
NAB output
HA12230NT
Rev.6, Nov. 2000, page 5 of 32
Block Diagram
30
29
28
27
26
25
24
23
22
21
20
1
2
3
4
5
6
7
8
9
10
11
12
13
14
RIP
RECIN(R)
RECOUT(R)
RECOUT(L)
RECIN(L)
PBOUT(L)
MUTE
A120/70
A/B
TAI(L)
EQOUT(L)
PB-EQ(L)
PB-NF(L)
15
B
I
/
II
V
CC
19
18
17
16
Unit
R :
C : F
REC Return
-
+
-
+
PB-EQ(R
)
TAI(R
)
BIN(R
)
AIN(L
)
PB-NF(R
)
IREF
MAI
MAOUT
EQOUT(R
)
BIN(L
)
AIN(R
)
GND
Vref
+
+
+
+
+
+
PBOUT(R)
REC Return
REC Return
120/70
A
B
B
A
120/70
Mute
+
REC-EQ
REC-EQ
-
+
-
+
-
+
-
+
Mute
LPF