NTE1808
Integrated Circuit
Playback Video Processor for VCR
Description:
The NTE1808 is a integrated circuit in a 28Lead DIP type package designed for VCR playback video
signal processin circuits.
Features:
D
BuiltIn Line Noise Canceler
D
BuiltIn Picture Control Circuit
D
Supply Voltage: V
CC
= 5V
Absolute Maximum Ratings: (T
A
= +25
C unless otherwise specified)
Supply Voltage, V
CC
6V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Dissipation (T
A
= +70
C), P
D
200mW
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Ambient Temperature Range, T
opr
20
to +70
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage Temperature Range, T
stg
55
to +150
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Characteristics: (V
CC
= 5V, T
A
= +25
C unless otherwise specified)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
Circuit Current
I
23
17
30
mA
DOC Amplifier Gain
G
25
Pin24 Input (60mV
PP
, 4MHz)
13
16
dB
DOC Sensitivity ON
S
28
Pin26 Input (4MHz), 0dB = 350mV
PP
15
11.5
dB
DOC Sensitivity OFF (Hysteresis)
D
S
28
5
0.5
dB
Sub FM Demodulation Det.
Sensitivity
S
15
Pin24 Input (50mV
PP
) Pin17 3.5V
F11 is multiplied by Gain (0dB = 250mV)
2.5
dB
Sub FM Demodulation Det.
Limitation
L
f15
Pin24 Input (100mV
PP
), Pin17 3.5V
7
MHz
Main FM Demodulation Det.
Sensitivity
S
16
Pin21 Input (150mV
PP
), Pin17 3.5V
F11 is multiplied by Gain (0dB = 250mV)
2.5
dB
Main FM Demodulation Det.
Limitation
L
f16
Pin21 Input (100mV
PP
), Pin17 3.5V
7
MHz
Difference Det. Amp. Gain A
G
111
Pin14 Input (100mV
PP
, 1MHz)
13.5
16.5
dB
Difference Det. Amp. Gain B
G
112
Pin13 Input (100mV
PP
, 1MHz)
12
15
dB
Note 1. Operating Supply Voltage Range: V
CC(opr)
= 4.5V to 5.5V
Electrical Characteristics (Cont'd): (V
CC
= 5V, T
A
= +25
C unless otherwise specified)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
Differential + Mix Amp Gain
G
41
7
10
dB
Mix Amp. Ratio
G
42
Pin12 Input (500mV
PP
, 1MHz)
5.5
2.5
dB
Line Noise Canceler Switch
Changeover Level Difference
Du
4
Pin27 Control Pulse
5
5
mV
Line Noise Canceler Switch
Crosstalk
CT
4
500mV
PP
, 1MHz Pin4 Output Ratio of
Pin10 & Pin12
40
dB
Line Noise Canceler Limiter Gain
G
7
Pin9 Input (40mV
PP
, 1MHz)
15.5
19.0
dB
Line Noise Canceler Cerrlative
Det. Sensitivity ON
S
6
Pin9 Input (4MHz), 0dB = 60mV
PP
1.5
4.5
dB
Line Noise Canceler Cerrlative
Det. Sensitivity OFF (Hysteresis)
D
S
6
Pin9 Input (4MHz), 0dB = 60mV
PP
4
0.1
dB
Picture Gain Control
G
1
Pin3 Input (250mV
PP
, 1MHz), Output
Ratio of Pin2 0V and 2.5V
1.5
0.5
dB
Picture Control Frequency
Characteristics A
f
11
Pin3 Input (250mV
PP
, 1MHz)
3
dB
Picture Control Frequency
Characteristics B
f
12
Pin3 Input (250mV
PP
, 1MHz), Output
Ratio of Pin2 5V and 2.5V
5
dB
Note 1. Operating Supply Voltage Range: V
CC(opr)
= 4.5V to 5.5V
Note 2. Pin8 shall be always used in connection with Pin23
Note 3. Power supply to be supplied to the variable resistor added to Pin2 and Pin17 shall be used
the same as that supplied to this integrated circuit.
Note 4. Since deterioration or destroy of characteristics due to flow of overcurrent caused by reverse
current, careful should be taken to handling.
V
CC
V
CC
(Record)
Pin Connection Diagram
RF Output
Envelope DET
Video Output
GND
Extension
Peaking
Diff Signal Output
1H Delay RF Input
RF Input
Limited Signal Input
Double LIM H.P.F. Input
1
2
3
4
Picture Control
DeEmphasis
5
6
Relative Detecting Pulse Output
7
Line N.C. LIM Output
8
28
27
26
25
DOC Pulse Output
24
23
22
21
9
Line N.C. LIM Input
20
LIM
LIM
10
Diff Signal Input
11
19
18
DEM Gain Control
12
17
DEM Output
13
Video Input
16
14
Video (1H DL) Input
15
DEM (1H DL) Output
Double LIM H.P.F. Input
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