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NTE790 PDF даташит

Спецификация NTE790 изготовлена ​​​​«NTE Electronics» и имеет функцию, называемую «Integrated Circuit Dual Chroma Demodulator».

Детали детали

Номер произв NTE790
Описание Integrated Circuit Dual Chroma Demodulator
Производители NTE Electronics
логотип NTE Electronics логотип 

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NTE790 Даташит, Описание, Даташиты
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
With No Output Loads
G–Y, R–Y, B–Y Outputs
Chroma Inputs
IT S1 Closed
S1 Open
V9, V11, V13 S1 Closed
V3, V4 S1 Open
16.5 – 26.5 mA
– 9 – mA
13.2 14.7 15.8 V
– 3.3 – V
Reference Subcarrier
Demodulator Unbalance
Maximum Color Difference Output Voltage
V6, V7 S1 Open
V9, V11, V13 V3 = V4 = 0
V13 V3 = v4 = 0.6Vp–p
V11
– 6.2 – V
– – 0.8 Vp–p
8.0 –
– Vp–p
5.5 –
– Vp–p
V9
1.2 –
– Vp–p









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NTE790 Даташит, Описание, Даташиты
Electrical Characteristics (Cont’d): (TA = +25°C and V+ = 24V unless otherwise specified)
Parameter
Symbol
Test Conditions
Min Typ Max Unit
Chroma Input Sensitivity
Relative RY Output
V3 Adjust ec for 5V @ Pin13 (BY) 0.2 0.35 Vpp
V11 3.5 4.2 Vpp
Relative GY Output
V9
0.75 1.25 Vpp
VDC Difference Between any two
Output Pins
|V9||V13| ec = 0
– – 0.6 V
Input Impedance Reference Subcarrier
ri6, 7
1.7 k
Input Capacitance Reference Subcarrier
Input Impedance at Chroma Inputs
Input Capacitance at Chroma Inputs
Output Resistance
ci6, 7
ri3, 4
ci3, 4
ro
6
0.95
6
180
pF
k
pF
Pin Connection Diagram
N.C. 1
N.C. 2
() Chroma 3
(+) Chroma 4
N.C. 5
R Y Injection 6
B Y Injection 7
14 GND
13 B Y Output
12 N.C.
11 R Y Output
10 N.C.
9 G Y Output
8 VCC
14 8
17
.785 (19.95)
Max
.200 (5.08)
Max
.300
(7.62)
.100 (2.45)
.600 (15.24)
.099 (2.5) Min










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