NTE747
Integrated Circuit
Low Level Video Detector
Formerly: ECG747
Description:
The NTE747 is a low level video detector in an 8-Lead DIP type package featuring very linear video characteristics and bandwidth. Designed for color and monochrome television receivers, replacing the third IF, detector, video buffer, and the AFC buffer.
Features:
- Conversion Gain: 34dB Typ
- Video Frequency Response @ 6MHz < 1dB
- Input of 36mV Produces 3VP-P Output
- High Video Output: 7.7VP-P
- Fully balanced Detector
- High Rejection of IF Carrier
- Low Radiation of Spurious Frequencies
Absolute Maximum Ratings: (T
A = +25°C unless otherwise specified)
Power Supply Voltage |
|
24V |
Supply Current |
|
26mA |
Input Voltage |
|
1VRMS |
Power Dissipation |
|
625mW |
Derate Above 25°C |
|
5mW/°C |
Operating Ambient Temperature Range |
|
0° to +75°C |
Storage Temperature Range |
|
-65° to +150°C |
Electrical Characteristics: (TA = +25°C, V+ = 20V, Q = 30, fC = 45MHz unless otherwise specified)
Parameter |
Pin |
Test Conditions |
Min |
Typ |
Max |
Unit |
Supply Voltage Range |
6 |
|
12 |
20 |
24 |
V |
Supply Current |
5, 6 |
|
- |
15 |
- |
mA |
Zero Signal DC Output Voltage |
4 |
|
6.8 |
7.7 |
8.3 |
V |
Maximum Signal DC Output Voltage |
4 |
|
- |
0 |
- |
V |
Input Signal Voltage |
7 |
3VP-P Video Output, 90% Modulation |
- |
36 |
- |
mVRMS |
Maximum Output Voltage Swing |
4 |
|
- |
7.7 |
- |
VP-P |
Carrier Rejection at Output |
4 |
|
42 |
60 |
- |
dB |
Carrier Output Voltage |
|
3VP-P Output, fout = fC |
- |
1 |
- |
mVP-P |
3VP-P Output, fout = 2fC |
- |
3 |
- |
mVP-P |
3dB Bandwidth of IF Carrier |
7 |
|
- |
80 |
- |
MHz |
3dB Bandwidth of Video Output |
4 |
|
- |
12.3 |
- |
MHz |
Input Resistance |
7 |
|
- |
3.5 |
- |
k Ohm |
Input Capacitance |
7 |
|
- |
3.0 |
- |
pF |
Internal Resistance |
2, 3 |
Across Tuned Circuit |
- |
4.4 |
- |
k Ohm |
Internal Capacitance |
2, 3 |
|
- |
1.0 |
- |
pF |
AFT Buffer Output |
1 |
At Carrier Frequency, Note 1 |
- |
350 |
- |
nVP-P |
AFT Buffer DC Level |
1 |
|
- |
6.5 |
- |
V |
This product is discontinued.
Only while stock lasts.
NTE-ECG replacement list as pdf-file
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