NTE7081 NTE-7081 | ECG7081 ECG-7081 | NTE Electronics
NTE7081
Integrated Circuit
RGB Video Amplifier System
28-PIN DIP
Info as pdf-file
Description:
The NTE7081 is a wideband video amplifier system in a 28-Lead DIP type package intended for high resolution RGB color monitor applications. In addition to three matched video amplifiers, the NTE7081 contains three gated differential input vblack level clamp comparators for brightness control and three matched attenuator circuits for contrast control. Each video amplifier contains a gain set or "Drive" node for setting maximum system gain (A
V = 4 to 10) as well as providing trim capability. The NTE7081 also contains a voltage reference for the video inputs.
Features:
- Three Wideband Video Amplifiers (70MHz at -3dB)
- Inherently matched (±0.5dB) Attenuators for Contrast Control
- Three Externally Gated Comparators for Brightness Control
- Provisions for Independent Gain Control (Drive) of each Video Amplifier
- Video Input Voltage Reference
- Low Impedance Output Driver
Absolute Maximum Ratings:
| Supply Voltage (Pin1, Pin13, Pin23, Pin28, Note 1, VCC |
|
13.5V |
| Voltage at Any Input Pin, VIN |
|
VCC >/= VIN >/= GND |
| Video Output Current, I16, I20, or I28 |
|
28mA |
| Power Dissipation (Note 2), PD |
|
2.5W |
| Junction Temperature, TJ |
|
+150°C |
| Operating Temperature Range, TA |
|
0° to +70°C |
| Storage Temperature Range, Tstg |
|
-65° to +150°C |
| Thermal Resistance, Junction-to-Ambient, RthJA |
|
50°C/W |
| Lead Temperature (During Soldering, 10sec.), TL |
|
+265°C |
| ESD Susceptibility |
|
2kV |
| Note 1. | VCC supply pins 1, 13, 23, and 28 must be externally wired together to prevent internal damage during VCC power ON/OFF cycles. |
| Note 2. | Derate above +25°C based on RthJA and TJ. |
Electrical Characteristics: (TA = +25°C, VCC1 = VCC2 = 12V unless otherwise specified)
| Parameter |
Symbol |
Test Conditions |
Typ |
Tested
(Note 3) |
(Limits)
Unit |
| DC Static Test (S17, S21, S26 Open, V12 = 6V, V14 = 0V, V15 = 2V unless otherwise specified) |
| Supply Current |
IS |
VCC1 Only |
73 |
90 |
mA Max |
| Video Input Reference Voltage |
V11 |
|
2.4 |
2.2 |
VMIN |
| |
- |
2.6 |
VMAX |
| Video Input Bias Current |
Ib |
Any One Amplifier |
5 |
20 |
µA Max |
| Clamp Gate Low Input Voltage |
V14L |
Clamp Comparators ON |
1.2 |
0.8 |
VMIN |
| Clamp Gate High Input Voltage |
V14H |
Clamp Comparators OFF |
1.6 |
2.0 |
VMAX |
| Clamp Gate Low Input Current |
I14L |
V14 = 0V |
-0.5 |
-5.0 |
µA Max |
| Clamp Gate High Input Current |
I14H |
V14 = VCC |
0.005 |
1.0 |
µA Max |
| Clamp Cap Charge Current |
IClamp(+) |
V5, V8, or V10 = 0V |
850 |
- |
µA |
| Clamp Cap Discharge Current |
IClamp(-) |
V5, V8, or V10 = 5V |
-850 |
- |
µA |
| Video Output Low Voltage |
VOL |
V5, V8, or V10 = 0V |
1.2 |
- |
V |
| Video Output High Voltage |
VOH |
V5, V8, or V10 = 5V |
8.9 |
- |
V |
| Video Output Offset Voltage |
|
Between Any Two Amplifiers, V15 = 2V |
±0.5 |
±50 |
mV Max |
| Between Any Two Amplifiers, V15 = 4V |
±0.5 |
±50 |
mV Max |
| AC Dynamic Test (S17, S21, S26 Closed, V14 = 0V, V15 = 4V, f = 10kHz unless otherwise specified) |
| Video Amplifier Gain |
AVmax |
V12 = 12V, VIN = 560mVP-P |
6.6 |
- |
V / V |
| AVmid |
V12 = 5V, VIN = 560mVP-P |
2.0 |
- |
V / V |
| V12 for AV Low |
V12low |
VIN = 1VP-P, Note 4 |
2.0 |
- |
V |
| Video Gain Match at AVmax |
|
V12 = 12V, Note 5 |
±0.2 |
- |
dB |
| Video Gain Match at AVmid |
|
V12 = 5V, Note 5 |
±0.2 |
- |
dB |
| Video Gain Match at AVlow |
|
V12 = V12low, Note 4, Note 5 |
±0.3 |
- |
dB |
| Video Amplifier Distortion |
THD |
V12 = 3V, VIN = 1VP-P |
0.5 |
- |
% |
| Video Amplifier Bandwidth |
f (-3dB) |
V12 = 12V, Note 6, Note 8 |
70 |
- |
MHz |
| Video Amplifier, 10kHz Isolation |
Vsep10kHz |
V12 = 12V, Note 7 |
-60 |
- |
dB |
| Video Amplifier, 10kHz Isolation |
Vsep10MHz |
V12 = 12V, Note 7, Note 8 |
-40 |
- |
dB |
| Note 3. | These parameters are guaranteed and 100% tested. |
| Note 4. | Determine V12 low for -40dB arrenuation of output. Reference AV to max. |
| Note 5. | Measure gain difference between any two amplifiers. VIN = 1VP-P. |
| Note 6. | Adjust input frequency, fIN, from 10kHz (AV max ref level) to the -3dB corner frequency (f -3dB). VIN = 560mVP-P. |
| Note 7. | VIN = 560mVP-P at fIN = 10kHz to any one amplifier. Measure output levels of the other two undriven amplifiers relative to driven amplifier to determine channel separation. Terminate the undriven amplifier inputs to simulate generator loading. Repeat test at fIN = 10MHz for Vsep = 10MHz. |
| Note 8. | Special test fixture without socket required. |
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