NTE783
Integrated Circuit
Automatic FineTuning Detector
Description:
Specifically intended for use in the automatic fine tuning (AFT) system of color television receivers,
the NTE783 AFT Detector provides all of the required circuitry except the tuning component. The
device embodies a highgain input amplifier and automatic gain control (AGC) circuitry to provide ex-
cellent sensitivity in TV AFT systems employing low level IF amplifiers.
Features:
D
CascadeCascode Amplifier
D
Internal Voltage Regulator
D
Internal AGC
D
25kHz Frequency Deviation
D
14Pin Dual InLine Plastic Package
Thermal Characteristics:
Operating Temperature Range, T
A
40
to +85
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage Temperature Range, T
S
65
to +150
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Characteristics: (T
A
= +25
C, V
CC
= +30V unless otherwise specified)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
Static Characteristics
Total Device Dissipation
P
D
130
140
150
mW
Supply Current
I
CC
V
1
= +10.5V
4.0
6.5
9.5
mA
Amplifier Current
I
3
1.0
2.0
4.0
mA
Regulator Voltage
V
REG
10.9
11.8
12.8
V
AFT Output Voltage
V
5,8
5.0
6.6
8.0
V
Output Offset Voltage
V
58
0
1.0
V
Dynamic Characteristics
Input Admittance
11
0.4 + j1
mmho
Reverse Transfer Admittance
12
0 + j 3.4
mmho
Forward Transfer Admittance
21
110 + j140
mmho
Output Admittance
22
Pin3
0.02 + j1
mmho
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