NTE984
Integrated Circuit
TV Video IF System
Description:
The NTE984 is a monolithic integrated circuit in a 16Lead DIP type package designed to perform
IF amplification, video detection, and videoamplifier functions in color and monochrome TV receivers.
Features:
D
Improved AGC, Fast Response, Sample and Hold Keyed
D
High Gain Wideband IF Amplifiers
D
Delayed AGC Output for Tuner
D
Gain Reduction with Excellent Stability
D
Linear Video Detector
D
Video Amplifier
D
Low Noise
D
Internal Shunt Regulator
D
For Color of Monochrome
Absolute Maximum Ratings:
DC Supply Voltage:
Between Pin15 and Pin4
16V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Between 470
Connected to Pin12 and Pin14
35V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DC Supply Current:
At Pin15
20mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
At Pin12
30mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Device Dissipation (T
A
+55
C), P
D
750mW
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Derate Linearly Above +55
C 7.9mW/
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Ambient Temperature Range, T
A
40
to +85
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage Temperature Range, T
stg
65
to +150
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lead Temperature (During Soldering, 1/16"
1/32" from case, 10sec max), T
L
+265
C
. . . . . . . . . . .
Electrical Characteristics: (T
A
= +25
C unless otherwise specified)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
Operating Supply Voltage
V
15
Note 1
12.0
14.2
V
Supply Current
I
15
3
15
mA
Shunt Regulator Voltage
V
12
10.9
13.0
V
Shunt Regulator Current
I
12
V
12
= 10.5V
6
20
mA
Tuner AGC High Voltage
V
10
18.5
21.0
V
Tuner AGC Low Voltage
V
10
0.3
1.3
V
AGC Current
I
2
NonKeyed
80
500
A
AGC Peak Current
I
2
Keyed Source Current
0.7
3.0
mA
Keyed Sink Current
150
680
A
Horizontal Key Input
Through 100k
connected to Pin1
25
35
V
Video Output High Voltage
V
16
At Zero Carrier
7
10
V
Video Output Low Voltage
V
16
At 30mV Input
0.9
2.0
V
Sensitivity Voltage
V
16
At 400
V Input
0.9
5.0
V
Noise
12
mV
rms
Chroma
45.75MHz, 10mV; 42.17MHz, 3mV
0.7
1.6
V
rms
AFT Drive
35
85
mV
rms
Distortion
50kHz, 80% Modulated,
Sync Tip Equiv. 30mV
rms
10
%
Delay Voltage
Through 15k
connected to Pin7,
Note 2
0
V
15
V
Note 1 V
15
Min should be at least 0.6V above Terminal 12 potential. Lower voltage may cause some
"white" compression.
Note 2 Zero voltage corresponds to maximum delay at signal input + 30mV
(RMS)
.
(+) V
S
1 Shunt Reg
(+) V
S
2
Pin Connection Diagram
Clamp Capacitor
Tuner AGC
A3 Input and Detector
Detector Bias
A2 Output
Substrate
Video Output
AGC Delay
GND
IF AGC Bias
A1 Output/A2 Input
A1 Input
AGC Filter
Key Pulse Input
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
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