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参数资料
| 型号： | NTE1785 |
| 厂商： | NTE Electronics, Inc. |
| 英文描述： | Quad Differential Comparator 14-SOIC 0 to 70 |
| 中文描述： | 集成电路电视中频放大器瓦特/解调和亚足联（对于进步党调谐器） |
| 文件页数： | 2/3页 |
| 文件大小： | 25K |
| 代理商： | NTE1785 |
Electrical Characteristics (Cont’d):
(T
A
= +25
°
C, V
11
–
13
= 12V, f = 38.9MHz unless otherwise
specified)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
Signal
–
to
–
Noise Ratio
S/N
V
i
= 10mV, Note 2
–
58
–
dB
Differential Gain
dG
–
4
10
%
Differential Phase
–
2
10
deg.
Intermodulation, Blue
Intermodulation, Yellow
1.1MHz, Note 3
–
46
60
dB
–
46
50
dB
Intermodulation
3.3MHz, Note 4
–
46
54
dB
Carrier Signal at Video Output
2
nd
Harmonic of Carrier at Video Output
–
4
30
mV
–
20
30
mV
White Spot Inverter Threshold Level
–
6.6
–
V
White Spot Insertion Level
–
4.7
–
V
Noise Inverter Threshold Level
–
1.8
–
V
Noise Insertion Level
–
3.8
–
V
External Video Switch (VCR) Switched Off
V
14
–
13
I
4
V
4
–
13
I
4
V
5
–
13
f
V
5
–
13
–
–
1.1
V
Tuner AGC Output Current Range
0
–
10
mA
Tuner AGC Output Voltage
I
4
= 10mA
V
14
–
13
= 11V, V
4
–
13
= 12V
–
–
0.3
V
μ
A
V
Tuner AGC Output Leakage Current
–
–
15
Maximum AFC Output Voltge Swing
10
11
–
Detuning for AFC Output Voltage Swing
of 10V
–
100
200
kHz
AFC Zero
–
Signal Output Voltage
(Minumum Gain)
4
6
8
V
AFC Switches ON
V
6
–
13
V
6
–
13
3.2
–
–
V
AFC Switches OFF
–
–
1.5
V
Note 2. S/N = V
O
black
–
to
–
white/V
n(rms)
at B = 5MHz.
Note 3. 20 log (V
O
at 4.4MHz/V
O
at 1.1MHz) + 3.6dB.
Note 4. 20 log (V
O
at 4.4MHz/V
O
at 3.3MHz)
V
CC
Pin Connection Diagram
AFC Output
AFC Tank (Amp)
AFC Tank (Sync)
AFC Switch Input
AGC Output
GND
AGC Delay Input
AFC Tank (Amp)
AFC Tank (Sync)
Video Output
AGC Filter
IF Input
Coupling Cap
IF Input
1
2
3
4
5
6
7
8
16
15
14
13
Coupling Cap
12
11
10
9
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