NTE NTE1812 Datasheet

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

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