NTE746 TV Video IF Amplifier PDIP-8
Info as pdf-file
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:
- Center Frequency: FO = 45MHz
- Bandwidth: BW = 6MHz
- Power Gain: 50dB Min
- AGC Range: 60dB Min
- Low Reverse-Transfer Admittance: 1μmho Typ
- 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:
- TV Video IF
- Defense Communications Satellite Programs
- Combined AM/FM Radio IF Amplifiers
- 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: (T
A = +25°C, V+ = 12V unless otherwise specified)
| Parameter |
Symbol |
Test Conditions |
Min |
Typ |
Max |
Unit |
| DC Characteristics |
| Total Supply Current |
IS |
Pin1, Pin2, and Pin8 |
- |
20 |
- |
mA |
| Output Stage Current |
I1 + I8 |
|
- |
6.5 |
- |
mA |
| AGC Supply Voltage |
VAGC |
0dB Attenuation |
- |
5.0 |
- |
V |
| 60dB Attenuation |
- |
6.9 |
- |
V |
| AGC Supply Current |
IAGC |
0dB Attenuation |
- |
0.1 |
- |
mA |
| 60dB Attenuation |
- |
0.2 |
- |
mA |
| Small-Signal Characteristics (f = 45MHz) |
| Power Gain |
|
BW = 6MHz |
- |
46 |
50 |
dB |
| Y-Parameters |
Single-Ended Input Admittance |
g11 |
|
- |
1.0 |
- |
mmhos |
| b11 |
|
- |
2.8 |
- |
mmhos |
| Differential Output Admittance |
g22 |
|
- |
0.07 |
- |
mmhos |
| b22 |
|
- |
0.50 |
- |
mmhos |
| Differential Admittance Variation w/AGC |
Input Admittance |
g11 |
0dB to 60dB |
- |
0.06 |
- |
mmhos |
| b11 |
- |
0.00 |
- |
mmhos |
| Output Admittance |
g22 |
- |
0.004 |
- |
mmhos |
| b22 |
- |
0.04 |
- |
mmhos |
| |
Y21 |
0dB AGC |
- |
0.2 |
- |
mhos |
| Useable AGC Range in 45MHz TV IF |
|
|
- |
> 60 |
- |
dB |
Pictures are a guide only actual product may vary. Subject to alterations and errors. Help us to eliminate errors:
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