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NTE790 Arkusz danych(PDF) 1 Page - NTE Electronics

Numer części NTE790
Szczegółowy opis  Integrated Circuit Dual Chroma Demodulator
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Producent  NTE [NTE Electronics]
Strona internetowa  http://www.nteinc.com
Logo NTE - NTE Electronics

NTE790 Arkusz danych(HTML) 1 Page - NTE Electronics

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NTE790
Integrated Circuit
Dual Chroma Demodulator
Description:
The NTE790 has two sets of synchronous detectors with matrix circuits to achieve the R–Y, G–Y and
B–Y color difference output signals. The chroma input signal is applied to Pin3 and Pin4 while the
oscillator injection signal is applied to Pin6 and Pin7. The color difference signals, after matrix, have
a fixed relationship of amplitude and phase nominally equal DC voltage levels. The outputs of the
NTE790 are suitable for driving high level color difference or R, G, B output amplifiers. Emitter–follower
output stages used to drive the high level color amplifiers have short–circuit protection.
Absolute Maximum Rating: (TA = +25°C unless otherwise specified)
DC Supply Voltage (Pin8 to Pin14)
27V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reference Input Voltage
5Vp–p
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chroma Input Voltage
5Vp–p
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Total Device Dissipation (Up to TA = +70°C), PD
530mW
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Derate Above TA = +70°C
6.7mW/
°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Ambient Temperature Range, Topr
–40
° to +85°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage Temperature range, Tstg
–65
° to +150°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lead Temperature (During Soldering, 1/32” from seating plane, 10sec max), TL
+265
°C
. . . . . . . . .
Electrical Characteristics: (TA = +25°C and V+ = 24V unless otherwise specified)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
Static Characteristics
Supply Current
With Output Loads
IT
S1 Closed
16.5
26.5
mA
With No Output Loads
S1 Open
9
mA
G–Y, R–Y, B–Y Outputs
V9, V11, V13 S1 Closed
13.2
14.7
15.8
V
Chroma Inputs
V3, V4
S1 Open
3.3
V
Reference Subcarrier
V6, V7
S1 Open
6.2
V
Demodulator Unbalance
V9, V11, V13 V3 = V4 = 0
0.8
Vp–p
Maximum Color Difference Output Voltage
V13
V3 = v4 = 0.6Vp–p
8.0
Vp–p
V11
5.5
Vp–p
V9
1.2
Vp–p


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