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参数资料
| 型号： | NTE821 |
| 厂商： | NTE Electronics, Inc. |
| 英文描述： | Integrated Circuit TV Chroma Demodulator |
| 中文描述： | 集成电路电视色度解调器 |
| 文件页数： | 2/3页 |
| 文件大小： | 23K |
| 代理商： | NTE821 |
Electrical Characteristics:
(T
A
= +25
°
C, V
CC
= 24V, R
L
= 3.3k
, Reference Input Voltage = 1V
P
–
P
unless otherwise specified)
Parameter
Test Pin
Test Conditions
Min
Typ
Max
Unit
Static Characteristics
Quiescent Output Voltage
9, 11, 13
13.0
14.3
16.0
V
Quiescent Input Current
8
R
L
=
∞
, Chroma and Reference
Voltage = 0
–
6.0
–
mA
Chroma and Reference Voltage = 0
16.5
19.0
25.5
mA
Reference Input Voltage
6, 7
–
6.6
–
V
Chroma Input Voltage
3, 4
–
3.5
–
V
Differential Output Voltage
9, 11, 13 Note 3
–
200
600
mV
mV/
°
C
Output Temperature Coefficient
9, 11, 13 No Output Differential Voltage, Note 3
–
2.0
–
Dynamic Characteristics
Detector Output Voltage (B
–
Y)
13
Note 4
8
13
–
V
P
–
P
mV
P
–
P
V
P
–
P
V
P
–
P
deg
Chroma Input Voltage
3
B
–
Y Output = 5V
P
–
P
, Note 5
Adjust B
–
Y Output to 5V
P
–
P
, Note 6
Adjust B
–
Y Output to 5V
P
–
P
, Note 6
B
–
Y Output = 5V
P
–
P
B
–
Y Output = 5V
P
–
P
9, 11, 13 No Chroma Input Voltage and Normal
Reference Signal Input Voltage
–
300
700
Detector Output Voltage (G
–
Y)
9
1.4
1.75
2.1
Detector Output Voltage (R
–
Y)
11
4.3
4.65
5.0
Relative Output Phase (B
–
Y to R
–
Y)
13
–
11
85
90
95
Relative Output Phase (B
–
Y to G
–
Y)
13
–
9
236
244
252
deg
Demodulator Unbalanced Voltage
–
250
500
mV
P
–
P
Residual Carrier and Harmonics
9, 11, 13 With Input Signal Voltage, Normal Refer-
ence Signal Voltage and B
–
Y = 5V
P
–
P
6, 7
Chroma Input = 0
–
–
1.5
V
P
–
P
Reference Input Resistance
–
2.0
–
k
pF
k
pF
Reference Input Capacitance
6, 7
Chroma Input = 0
–
6.0
–
Chroma Input Resistance
3, 4
–
1.0
–
Chroma Input Capacitance
3, 4
–
2.0
–
Note 3. With chroma input signal voltage = 0 and normal reference input signal voltage (1V
P
–
P
), all
output voltages will be within specified limits and will not differ from each other by greater
than 0.6V.
Note 4. With normal reference input signal voltage, adjust chroma input signal voltage to 1.2V
P
–
P
.
Note 5. With normal reference input signal voltage, adjust chroma input signal voltage until the B
–
Y
output voltage = 5V
P
–
P
. The chroma input voltage at this point should be equal to or less than
0.7V
P
–
P
.
Note 6. With normal reference input signal voltage, adjust the chroma input signal until the B
–
Y out-
put voltage = 5V
P
–
P
. At this point, the R
–
Y and G
–
Y voltages will fall within the specified limits.
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