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参数资料
| 型号： | NTE790 |
| 厂商： | NTE Electronics, Inc. |
| 英文描述： | Integrated Circuit Dual Chroma Demodulator |
| 中文描述： | 集成电路双色度解调器 |
| 文件页数： | 1/2页 |
| 文件大小： | 23K |
| 代理商： | NTE790 |
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:
(T
A
= +25
°
C unless otherwise specified)
DC Supply Voltage (Pin8 to Pin14)
Reference Input Voltage
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chroma Input Voltage
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Total Device Dissipation (Up to T
A
= +70
°
C), P
D
Derate Above T
A
= +70
°
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Ambient Temperature Range, T
opr
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage Temperature range, T
stg
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lead Temperature (During Soldering, 1/32” from seating plane, 10sec max), T
L
27V
5V
p–p
5V
p–p
530mW
6.7mW/
°
C
–40
°
to +85
°
C
–65
°
to +150
°
C
. . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
+265
°
C
Electrical Characteristics:
(T
A
= +25
°
C and V+ = 24V unless otherwise specified)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
Static Characteristics
Supply Current
With Output Loads
I
T
S
1
Closed
S
1
Open
16.5
–
26.5
mA
With No Output Loads
–
9
–
mA
G–Y, R–Y, B–Y Outputs
V
9
, V
11
, V
13
S
1
Closed
V
3
, V
4
V
6
, V
7
V
9
, V
11
, V
13
V
3
= V
4
= 0
V
13
V
11
V
9
13.2
14.7
15.8
V
Chroma Inputs
S
1
Open
S
1
Open
–
3.3
–
V
Reference Subcarrier
–
6.2
–
V
Demodulator Unbalance
–
–
0.8
V
p–p
V
p–p
V
p–p
V
p–p
Maximum Color Difference Output Voltage
V
3
= v
4
= 0.6V
p–p
8.0
–
–
5.5
–
–
1.2
–
–
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