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NTE821 Arkusz danych(PDF) 2 Page - NTE Electronics

Numer części NTE821
Szczegółowy opis  Integrated Circuit TV Chroma Demodulator
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Producent  NTE [NTE Electronics]
Strona internetowa  http://www.nteinc.com
Logo NTE - NTE Electronics

NTE821 Arkusz danych(HTML) 2 Page - NTE Electronics

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Electrical Characteristics: (TA = +25°C, VCC = 24V, RL = 3.3kΩ, Reference Input Voltage = 1VP–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
RL = ∞, 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
Output Temperature Coefficient
9, 11, 13 No Output Differential Voltage, Note 3
2.0
mV/
°C
Dynamic Characteristics
Detector Output Voltage (B–Y)
13
Note 4
8
13
VP–P
Chroma Input Voltage
3
B–Y Output = 5VP–P, Note 5
300
700
mVP–P
Detector Output Voltage (G–Y)
9
Adjust B–Y Output to 5VP–P, Note 6
1.4
1.75
2.1
VP–P
Detector Output Voltage (R–Y)
11
Adjust B–Y Output to 5VP–P, Note 6
4.3
4.65
5.0
VP–P
Relative Output Phase (B–Y to R–Y)
13–11
B–Y Output = 5VP–P
85
90
95
deg
Relative Output Phase (B–Y to G–Y)
13–9
B–Y Output = 5VP–P
236
244
252
deg
Demodulator Unbalanced Voltage
9, 11, 13 No Chroma Input Voltage and Normal
Reference Signal Input Voltage
250
500
mVP–P
Residual Carrier and Harmonics
9, 11, 13 With Input Signal Voltage, Normal Refer-
ence Signal Voltage and B–Y = 5VP–P
1.5
VP–P
Reference Input Resistance
6, 7
Chroma Input = 0
2.0
k
Reference Input Capacitance
6, 7
Chroma Input = 0
6.0
pF
Chroma Input Resistance
3, 4
1.0
k
Chroma Input Capacitance
3, 4
2.0
pF
Note 3. With chroma input signal voltage = 0 and normal reference input signal voltage (1VP–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 1.2VP–P.
Note 5. With normal reference input signal voltage, adjust chroma input signal voltage until the B–Y
output voltage = 5VP–P. The chroma input voltage at this point should be equal to or less than
0.7VP–P.
Note 6. With normal reference input signal voltage, adjust the chroma input signal until the B–Y out-
put voltage = 5VP–P. At this point, the R–Y and G–Y voltages will fall within the specified limits.


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