NTE1805
Integrated Circuit
Recording Video Signal Processing Circuit
Description:
The NTE1805 is an integrated circuit in a 28Lead DIP type package designed for use in VCR recording
video signal processing.
Features:
D
Dynamic Emphasis Characteristics: 5.5dB (at f = 1MHz, input level = 20dB)
D
BuiltIn Carrier Interleaving Circuit
D
BuiltIn Low Pass Filter (SyncSeparation Circuit)
D
Supply Voltage: V
CC
= 5V
Absolute Maximum Ratings: (T
A
= +25
C unless otherwise specified)
Supply Voltage, V
CC
6V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Dissiption (T
A
= +70
C), P
D
250mW
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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
20
Pin12 High (Record)
14.5
35.5
mA
Pin12 Open (Playback)
14.5
35.5
mA
AGC Output Amplification
u
8
Pin12 High, Video Input 1V
PP
0.4
0.8
V
PP
AGC Control Sensitivity
Du
8
Pin12 High, Video Input 0.5 to 2V
PP
1.5
dB
Playback Amp Gain
G
68
Pin12 Open
6.8
9.9
dB
12dB Amp Gain
G
1516
10.4
13.4
dB
FM Oscillation Frequency
f
o
Pin12 High, C
O
= 39pF, R
O
= 12k
2.9
3.9
MHz
FM Output 2
nd
High Frequency
2f
o
33
dB
FM Oscillation Output Amplification
u
28
0.65
1.35
V
PP
Frequency Control Sensitivity
FM Oscillation
b
28
Pin12 High, C
O
= 39pF, R
O
= 8.2 to 15k
11.4
14.5
kHz/
A
Note 1. Operating Supply Voltage Range: V
CC
= 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
Sync Separator Input Sensitivity
S
19
Video Input V/S = 5/2
0.45
V
PP
Sync Separator Output Amplification
u
2
Video Input V/S = 5/2
4.3
V
PP
NL Limiter Gain
u
1721
Pin12 High
20
40
mV
PP
NL Limiter Output Amplification
u
21
Pin12 High
26
64
mV
PP
Pin12 High, Pin18 Low
6.0
2.6
mV
PP
NC Limiter Gain
u
1410
Pin12 Open
30
70
mV
PP
NC Limiter Output Amplification
u
10
Pin12 Open
65
125
mV
PP
EE Amp Gain
G
810
Pin12 High
9.7
11.6
dB
VV Amp Gain
u
1910
Pin12 Open
1.65
2.15
V
PP
Chroma Amp Gain
G
1210
5.3
8.8
dB
EE/VV Crosstalk
CT
1910
E
y
4V
40
dB
Mute Crosstalk
CT'
1910
Pin12 Low, Pin11 High
40
dB
EE/VV Changeover Sensitivity
S
12
4
V
FM Oscillation Carrier Interleave
D
f
o
Pin12 High
5.9
9.9
kHz
V Offset
Du
19-10
Pin12 Low
30
110
mV
Note 1. Operating Supply Voltage Range: V
CC
= 4.5V to 5.5V.
V
CC
Pin Connection Diagram
Mod
White Clip Level Adjustment
Sync Tip Level Detect
AGC Detector
Video Signal Input During Recording
Dummy Sync Pulse Input
Dark Clip Level Adjustment
Mod
Mod Input
Sub Clamp Output
PB Chroma Input
FB Amp Input
Main Emphasis Output
1
2
3
4
Sync Output
EE Level Adjust
5
6
Video Signal Input During Playback
7
Sub Clamp Detector
8
28
27
26
25
FM Output
24
23
22
21
9
GND
20
Main Clamp Input
PG Input & 2/4/6 Hour Select
10
EE/VV Output
11
19
18
NonLinear Emphasis SubSide Input
12
17
12dB Amp Output
13
Noise Canceller L.P.F.
16
14
Noise Canceller H.P.F. Side Input
15
12dB Amp Input
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