Page 1
ICs for VCR
AN3375S
2-head recording/playback amplifier IC (V2)
for a stand-alone VHS-VCR
■ Overview
The AN3375S is a two-head recording/playback amplifier IC for a VHS-VCR enabling a fewer
pin package. The package is 16-pin, 1.27 mm pitch
SO type. The power supply is 5 V single source.
■ Features
• Recording current without adjustment (Zener zap
method)
• Damping-less amplifier for playback-system
• Built-in auto tracking circuit
■ Applications
• Stand-alone type VHS-VCR
16 9
18
10.09±0.20
(0.60)
0.40±0.10
1.27
Seating plane
SOP016-P-0225C
0.65±0.100.65±0.10
4.30±0.20
1.50±0.200.10±0.10
+0.10
6.40±0.30
Unit: mm
−0.05
0.15
0° to 10°
0.50±0.20
Seating plane
■ Block Diagram
(5 V)
CC
Video V
16
1
HSW
REC/PB
15
L
HA2
2
CH2 in
N.C.
14
LH
3
GND
Amp.
chroma
HA1
R
Chroma out
13
Zener
4
CH1 in
ZAP
GND (video)
12
5
out
V. REC
11
AT
6
N.C.
GCA control
Auto-tracking out
10
7
N.C.
REC in
9
8
N.C.
1
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AN3375S ICs for V CR
■ Pin Descriptions
Pin No. Description
1 Video head SW
2 Video head amp. input CH2
3 GND (video small signal)
4 Video head amp. input CH1
5 Video REC out
6N.C.
7N.C.
8N.C.
■ Absolute Maximum Ratings
Parameter Symbol Rating Unit
Supply voltage Video V
Supply current I
2
Power dissipation
Operating ambient temperature
Storage temperature
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.
*
*
1
*
1
*
CC
CC
P
D
T
opr
T
stg
Pin No. Description
9 Video REC input
10 Auto tracking out
11 Auto tracking GCA control
12 GND
13 Video chroma out
14 N.C.
15 REC/PB select SW
16 Video V
CC
6V
mA
300 mW
−20 to +70 °C
−55 to +150 °C
■ Recommended Operating Range
Parameter Symbol Range Unit
Supply voltage Video V
CC
4.5 to 5.5 V
■ Electrical Characteristics at Ta = 25°C
Parameter Symbol Conditions Min Typ Max Unit
Video V
Video HSW V
Threshold voltage REC/PB SW: Low
REC/PB SW V
Threshold voltage
Video CH1 gain G
Video CH2 gain G
Note) The standard values in the parenthesis are the typical values and not the guaranteed ones.
2
I total (PB) I
CC
16(PB)
TH1
TH15
4-13
2-13
Video VCC = 5.0 V 13 (20) 27 mA
REC/PB SW: Low
Video VCC = 5.0 V 1.5 (2.5) 3.5 V
Video VCC = 5.0 V 1.5 (2.5) 3.5 V
Video VCC = 5.0 V 55 (59) 63 dB
REC/PB SW: Low
Video VCC = 5.0 V 55 (59) 63 dB
REC/PB SW: Low
Page 3
ICs for VCR AN3375S
■ Electrical Characteristics at Ta = 25°C (continued)
Parameter Symbol Conditions Min Typ Max Unit
Noise referred to video CH1 input N
Video VCC = 5.0 V 1.0
4-13
REC/PB SW: Low
Noise referred to video CH2 input N
Video VCC = 5.0 V 1.0
2-13
REC/PB SW: Low
Video HSW DC unbalance ∆V
Video VCC = 5.0 V 100
HSW
REC/PB SW: Low
Output without auto tracking input V
Video VCC = 5.0 V 0 (0.5) 1.0 V
10min
REC/PB SW: Low
Auto tracking maximum output V
Video VCC = 5.0 V 4.0 (4.5) V
10max
REC/PB SW: Low
Video CH2/CH1 gain ratio G
Video V
I total (REC) I
CC
/ Video VCC = 5.0 V −2 (0) 2 dB
12-13
G
16(REC)
REC/PB SW: Low
14-13
Video VCC = 5.0 V 24 (37) 50 mA
REC/PB SW: High
Video REC current output I
Video VCC = 5.0 V 27.9 30 32.1
5
REC/PB SW: High
Note) The typical value in the parenthesis is the typical value and not the guaranteed one.
µV[rms]
µV[rms]
mV[p-p]
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
Auto tracking output voltage 1 V
Video VCC = 5.0 V 3.4 3.7 4.0 V
10L
REC/PB SW: Low
Auto tracking output voltage 2 V
Video VCC = 5.0 V 1.5 1.9 2.3 V
10H
REC/PB SW: Low
Video REC D
Video VCC = 5.0 V ¾ -45 -40 dB
5
Current secondary distortion REC/PB SW: High
Video REC MD
Video VCC = 5.0 V −48 dB
5
Cross modulation relative level REC/PB SW: High
Video HSW CTH
Video VCC = 5.0 V −40 dB
13
Crosstalk REC/PB SW: Low
V
Video PB
/ V13Video VCC = 5.0 V −4.5 (−2.5) dB
13H
Frequency characteristics ratio REC/PB SW: Low
Video REC I
/ ISVideo VCC = 5.0 V −4.5 (−2.5) dB
SH
8 MHz frequency characteristics ratio REC/PB SW: High
Video REC I
*
Current output
Note) The typical value in the parenthesis is the typical value and not the guaranteed one.
1: Video REC current output (I5) is controlled in the shipping inspection of this IC.
*
Because it is affected by the PCB or the cylinder, be cautious in handling it.
1
Video VCC = 5.0 V 28.5 30 31.5
5
REC/PB SW: High
mA[p-p]
3
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AN3375S ICs for V CR
5 V
0 V
■ Terminal Equivalent Circuits
Pin No. Equivalent circuit Description Voltages/Waveform
1 Head SW Input sygnal
3 kΩ 3 kΩ
23 kΩ
2.5 V
1
3 kΩ
2 Video head amp. ch.2 input
20 Ω
PB: On
REC: On
300 Ω
0.7 V
or
2.5 V
20 Ω
2
PB: On
3 GND (video small signal)
4 Video head amp. ch.1 input
20 Ω
PB: On
REC: On
300 Ω
0.7 V
or
2.5 V
20 Ω
4
PB: On
5 Video REC EP out
10 Ω
120 Ω
10 Ω
5
4
2.5 V
Page 5
ICs for VCR AN3375S
1.4 V
■ Terminal Equivalent Circuits (continued)
Pin No. Equivalent circuit Description Voltages/Waveform
6 N.C.
7
8
9 Video REC input
23 kΩ
10
20 kΩ
30 kΩ
18 kΩ
20 Ω
200 Ω
9
Auto tracking out
10
11 Auto tracking
11
9.4 kΩ
GCA control DC
DC
12 GND (video)
13 Video chroma out
10 pF
PB: On
13
30 kΩ
5
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AN3375S ICs for V CR
5 V
0 V
■ Terminal Equivalent Circuits (continued)
Pin No. Equivalent circuit Description Voltages/Waveform
14 N.C.
15 REC/PB select SW
3 kΩ
3 kΩ
23 kΩ
69 kΩ 69 kΩ
15
16 Video V
■ Application Circuit Example
Video VCC5 V
100 µH
REC/PB
47 µF
0.01 µF
16
15
14
N.C.
Amp.
chroma
Chroma out
AT
REC in
1 µF
0.01 µF
10
9
CC
39 kΩ24 kΩ
18 kΩ
13
Zener
ZAP
12
11
AT
LH
R
HA1
4
10 µH
0.1 µF
5
6
N.C.
7
N.C.
8
N.C.
1 000 pF
1
HSW
L
HA2
2
0.1 µF
3
10 µH
6
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