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NTE1812
Integrated Circuit
Capstan Interface Circuit for VCR
Description:
The NTE1812 i s a n i ntegrated c ircuit i n a 2 0–Lead D IP type package d esigned f or V CR c apstan interface.
Features:
D The Functions Consist of:
FG Amplifier
2H/4H/6H Automatic Detector
FG Divider
Gain Automatic Change Circuit
D Supply Voltage: 5V
Absolute Maximum Ratings
Supply Voltage, V
Power dissipation (T
CC
= +70°C), P
A
Operating Ambient Temperature Range, T
Storage Temperature Range, T
Electrical Characteristics
Parameter Symbol Test Conditions Min Typ Max Unit
Circuit Current I
FG Amp Input Sensitivity S
FG High–Level Frequency Dividing Output V
FG Low–Level Frequency Dividing Output V
A/B High–Level Output V
A/B Low–Level Output V
Playback CTL Input Sensitivity S
Mode Select Sensitivity
Record/Playback PAL/MTSCX 1/2, C, A, B
OP Amp. 3 High–Level Output V
OP Amp. 3 Low–Level Output V
Total Offset OP. Amp. NTSC 2H V
Total Offset OP. Amp NTSC 6H V
OP. Amp. 2 Gain G
: (TA = +25°C unless otherwise specified)
D
opr
stg
: (VCC = 5V, TA = +25°C ±2°C unless otherwise specified)
18
19
OH17
O17
OHA, B
OLA, B
16
S
(MODE)
OH11
OL11
O(offset)2
O(offset)6
V2
6.0V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
100mW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
–20° to +70°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
–55° to +150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
V
= 2.5V 7 – 14 mA
REF
30 – – mV
4.6 – – V
– – 4.0 V
–I = 2mA 3.3 – – V
– – 0.4 V
3.0 – – V
3.0 – – V
3.8 – – V
– – 1.1 V
– – 30 mV
– – 30 mV
–4 – +2 dB
Note 1. Operating Supply Range V
CC(opr)
= 4.5V to 5.5V
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Pin Connection Diagram
Mode Select B
GND
Mode Select C
Mode Select x 1/2
OP Amp Input
1
2
3
4
5PAL/NTSC Select
6B Output
7A Output
8Cap Error Input
20
19
18
17
16 PB Control Input
15 FG Divide Select
14
13
9Reference Input 12
10 11
Mode Select A
Cap FG Input
V
CC
Cap FG Output
Memory
Rec 2/4/6H Select
Rec/PB Select
Cap Error Output
1120
.339
(8.6)
110
1.063 (27.0) Max .400 (10.16)
.200
(5.08)
Max
.100 (2.54) .100 (2.54) Min
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