NTE NTE746 Integrated circuit tv video if amplifier Datasheet

NTE746
Integrated Circuit
TV Video IF Amplifier
Description:
The NTE746 is a monolithic integrated circuit in an 8–Lead DIP type package with wide–range AGC
for replacement of 1st and 2nd IF stages in solid–state color and black and white TV sets. It will directly
drive a 3rd IF stage.
Features:
D Center Frequency: FO = 45MHz
D Bandwidth: BW = 6MHz
D Power Gain: 50dB Min
D AGC Range: 60dB Min
D Low Reverse–Transfer Admittance: 1µmho Typ
D
D
D
D
Y21 Constant to 75MHz
12V Operation, Single–Polarity Power Supply
Total Supply Current: 20mA Typ
Nearly Constant Input and Output Admittance
over the Entire AGC Range
Applications:
D TV Video IF
D Defense Communications Satellite Programs
D Combined AM/FM Radio IF Amplifiers
D Linear Switch or Chopper for Multiplex Modulation or Demodulation
Absolute Maximum Ratings: (TA = +25°C)
Power Supply, V+ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18V
Output Supply, V1, V8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18V
AGC Supply, VAGC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4V < VAGC < V+
Differential Input Voltage, Vin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±7V
Power Dissipation, PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 625mW
Derate Above 25°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5mW/°C
Operating Temperature Range, TA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0° to +75°C
Electrical Characteristics: (V+ = 12V, TA = +25°C unless otherwise specified)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
–
20
–
mA
–
6.5
–
mA
0dB Attenuation
–
5.0
–
V
60dB Attenuation
–
6.9
–
V
0db Attenuation
–
0.1
–
mA
60dB Attenuation
–
0.2
–
mA
DC Characteristics
Total Supply Current
IS
Output Stage Current
I1 + I8
AGC Supply Voltage
VAGC
AGC Supply Current
IAGC
Pin1, Pin2, and Pin8
Electrical Characteristics (Cont’d): (V+ = 12V, TA = +25°C unless otherwise specified)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
–
46
50
dB
Small–Signal Characteristics (f = 45MHz)
Power Gain
BW = 6MHz
Y–Parameters
Single–Ended Input Admittance
g11
–
1.0
–
mmho
b11
–
2.8
–
mmho
Differential Output Admittance
g22
–
0.07
–
mmho
b22
–
0.50
–
mmho
–
0.06
–
mmho
b11
–
0.0
–
mmho
g22
–
0.004
–
mmho
b22
–
0.04
–
mmho
–
0.2
–
mho
–
> 60
–
dB
Differential Admittance Variation w/ AGC
Input Admittance
g11
Output Admittance
0dB to 60dB
Y21
0dB Agc
Useable AGC Range in 45MHz TV IF
Pin Connection Diagram
IF Output 1
8
IF Output
VCC
2
7
GND
GND 3
6
(+) Input
(–) Input 4
5
Input
8
5
.260 (6.6)
1
4
.300
(7.62)
.390 (9.9)
Max
.155
(3.93)
.145 (3.68)
.100 (2.54)
.300 (7.62)
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