PANASONIC AN3371SB

ICs for VCR
AN3371SB
2-head recording/playback amplifier IC
■ Overview
Unit: mm
0.2 +0.10
–0.05
15.2±0.3
The AN3371SB is a 2-head recording/playback
amplifier IC for VCR.
36
19
1
18
8.4±0.3
11.93±0.3
■ Features
0.5
• Pin and package compatible with the 4-head recording/playback amplifier AN3361SB.
• Recording current is adjustment-free.
• REC in and PB out pins are in common (RIPO)
• 12 V single supply voltage (PB 5 V is generated
inside.)
■ Applications
0.3±0.11
• VCR
0.8
Seating plane
1.30±0.25
0.1±0.1
2.85±0.2
1.30±0.25
SSOP036-P-0450A
24
23
22
21
20
19
13
14
15
16
REC F.B. 17
18
Open ZAP2
25 D-REC-H
12
Open ZAP3
26
11
Open ZAP4
27
10
GND
28
9
P
29
PB
5V
8
REC in / PB out
30
31 PB-L
32
33
34
35
36
VCC 12 V
■ Block Diagram
R
Chroma
amp.
REC amp. out
Open ZAP1
Damping 7
Channel 2 H.A. in 6
GND 5
Channel 1 H.A. in 4
2
Damping 3
HSW
1
H L
1
AN3371SB
ICs for VCR
■ Pin Descriptions
Pin No.
Description
Pin No.
Description
1
HSW input pin
19
ZAP2 (ZAP write pin)
2
N.C.
20
ZAP3 (ZAP write pin)
3
Channel-1 head amp. damping
21
ZAP4 (ZAP write pin)
4
Channel-1 head amp. input
22
N.C.
5
Small signal GND
23
N.C.
6
Channel-2 head amp. input
24
N.C.
7
Channel-2 head amp. damping
25
D-REC-H input pin
8
N.C.
26
N.C.
9
N.C.
27
N.C.
10
N.C.
28
Main GND
11
N.C.
29
N.C
12
N.C.
30
REC input / PB output pin
13
ZAP1 (ZAP write pin)
31
PB-L input pin
14
N.C
32
N.C.
15
N.C.
33
N.C.
16
N.C.
34
N.C.
17
REC feedback
35
VCC (12 V)
18
REC amp. output
36
Capacitor for PB 5 V
■ Absolute Maximum Ratings
Parameter
Supply voltage
Symbol
Rating
Unit
VCC
13
V
ICC

mA
PD
440
mW
Topr
−20 to +70
°C
Tstg
−55 to +125
°C
Supply current
Power dissipation
*2
Operating ambient temperature
Storage temperature
*1
*1
Note) *1: Except for the operating ambient temperature and storage temperature, all ratings are for Ta = 25°C.
*2: The power dissipation shown is for the IC package in free air at Ta = 70°C.
■ Recommended Operating Range
Parameter
Supply voltage
2
Symbol
Range
Unit
VCC
11.5 to 12.5
V
ICs for VCR
AN3371SB
■ Electrical Characteristics at Ta = 25°C
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
REC circuit current
I35R
VCC = 12 V
27

49
mA
PB circuit current
I35P
VCC = 12 V
16

30
mA
HSW DC unbalance
HSW
VCC = 12 V


100 mV[p-p]
Channel-1 gain
G4-30
VCC = 12 V
52

60
dB
Channel-2 gain
G6-30
VCC = 12 V
52

60
dB
Input referred noise 1
N4-30 /G4-30
VCC = 12 V


1
µV[rms]
Input referred noise 2
N6-30 /G6-30
VCC = 12 V


1
µV[rms]
High-level HSW hold voltage
VH1
VCC = 12 V
3.6

5.0
V
Low-level HSW hold voltage
VL1
VCC = 12 V
0.0

1.4
V
High-level D-REC-H hold voltage
VH25
VCC = 12 V
3.6

12.0
V
Low-level D-REC-H hold voltage
VL25
VCC = 12 V
0.0

1.4
V
Channel-1 gain
GA4-30
VCC = 12 V
49

58
dB
Channel-2 gain
GA6-30
VCC = 12 V
49

58
dB
High-level PB-L hold voltage
VH31
VCC = 12 V
3.6

5.0
V
Low-level PB-L hold voltage
VL31
VCC = 12 V
0.0

1.4
V
REC recording current output
I18
VCC = 12 V
28.2
30.0
31.8 mA[p-p]
• Design reference data
Note) The characteristics listed below are theoretical values based on the IC design and are not guaranteed.
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
REC circuit current
I35R
VCC = 12 V

38

mA
PB circuit current
I35P
VCC = 12 V

23

mA
Record current secondary distortion
D2f
VCC = 12 V

−43

dB
Cross modulation relative level
DM
VCC = 12 V

−48

dB
Channel-1 gain
G4-30
VCC = 12 V

56

dB
Channel-2 gain
G6-30
VCC = 12 V

56

dB
I18
VCC = 12 V
28.8
30
REC recording current output
31.2 mA[p-p]
3
AN3371SB
ICs for VCR
■ Terminal Equivalent Circuits
Pin No.
Equivalent circuit
1
5V
Description
HSW input pin:
High: 3.6 V to 5.0 V
Low: 0.0 V to 1.4 V
100 µA
3 kΩ 3 kΩ
23 kΩ
2.5 V
1

2
N.C.
3
Channel-1 head amp. damping:
DC 1.5 V
5V
90 Ω
1.24 V
4.5 kΩ
3
4
4
Channel-1 head amp. input:
DC 0.7 V
15 kΩ
4.5 kΩ
4

5
Small signal GND
6
Channel-2 head amp. input:
DC 0.7 V
15 kΩ
4.5 kΩ
6
7
Channel-2 head amp. damping:
DC 1.5 V
5V
90 Ω
1.24 V
4.5 kΩ
7
4
ICs for VCR
AN3371SB
■ Terminal Equivalent Circuits (continued)
Pin No.
Equivalent circuit
Description
8

N.C.
9

N.C.
10

N.C.
11

N.C.
12

N.C.
13
12 V
ZAP1 (ZAP write pin)
90 kΩ
200 Ω
13
20 kΩ
30 kΩ
14

N.C.
15

N.C.
16

N.C.
17
12 V
9.6 kΩ
17
REC feedback:
6V
18
18
REC amp. output:
DC 6 V
18
9.6 kΩ
540 Ω
17
19
12 V
200 Ω
19
ZAP2 (ZAP write pin)
90 kΩ
20 kΩ
30 kΩ
5
AN3371SB
ICs for VCR
■ Terminal Equivalent Circuits (continued)
Pin No.
Equivalent circuit
20
Description
12 V
ZAP3 (ZAP write pin)
90 kΩ
200 Ω
20
20 kΩ
30 kΩ
21
12 V
ZAP4 (ZAP write pin)
90 kΩ
200 Ω
21
20 kΩ
30 kΩ
22

N.C.
23

N.C.
24

N.C.
100 µA
25
100 µA
100 µA
D-REC-H input pin:
High: 3.6 V to 12.0 V
Low: 0.0 V to 1.4 V
20 kΩ
25
100 kΩ
2.5 V
26

N.C.
27

N.C.
28

Main GND
29

N.C.
30
REC input/PB output pin
12 V
PB 5 V
30
2V
30 kΩ
1.5 mA
6
30 kΩ
ICs for VCR
AN3371SB
■ Terminal Equivalent Circuits (continued)
Pin No.
Equivalent circuit
31
Description
PB-L input pin:
High: 3.6 V to 5.0 V
Low: 0.0 V to 1.4 V
100 µA
23 kΩ
31
2.5 V
32

N.C.
33

N.C.
34

N.C.
35

VCC (12 V)
36

Capacitor for PB 5 V
25
24
23
22
21
20
19
12
13
14
15
16
REC F.B. 17
REC amp. out 18
Open ZAP2
26
11
Open ZAP3
27
10
Open ZAP4
D-REC-H
28 GND
9
REC in / PB out
29
P
8
PB-L
PB
5V
30
31
32
33
34
35
36
VCC 12 V
■ Application Circuit Example
R
Chroma
amp.
Open ZAP1
Damping 7
Channel 2 H.A. in 6
GND 5
Channel 1 H.A. in 4
Damping 3
2
HSW
1
H L
7