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參數(shù)資料
| 型號： | MC13081X |
| 廠商： | Motorola, Inc. |
| 英文描述： | Multimode Color Monitor Horizontal, Vertical, and Video Combination Processor |
| 中文描述： | 多模彩色顯示器水平，垂直和視頻處理器組合 |
| 文件頁數(shù)： | 8/20頁 |
| 文件大?。?/td> | 235K |
| 代理商： | MC13081X |
MC13081X
8
MOTOROLA ANALOG IC DEVICE DATA
PIN FUNCTION DESCRIPTION (continued)
Pin
Description
Equivalent Internal Circuit
Name
20
24
26
Subcontrast
Control
Channel 1
Channel 2
Channel 3
VCC
50 k
Gain
Subcontrast controls the gain of each video channel.
0 V for maximum gain, and 2.0 V for minimum gain.
20, 24, 26
7.5 k
21, 22
N/C
These two pins are internally connected to each other,
and nothing else.
23
25
27
Video Inputs
Channel 1
Channel 2
Channel 3
5.0 V
2.4 V
Clamp
The input coupling capacitor is used for input clamp
storage. The maximum source impedance is 100
.
Polarity of the input video signal is positive. Amplitude
should be nominally 0.7 Vpp.
Video
Input
23, 25, 27
2.2
μ
F
75
6.2 k
2.7 k
28
Video Ground
Ground for the video section (video amplifiers,
contrast and brightness controls, subcontrast, and
video reference voltage).
Noise from the timebase section, and other digital
circuits, should not be allowed to produce ground
bounce at this pin.
29
Video VCC1
Connected to a 8.0, V
±
5%, dc supply. Decoupling is
required at this pin.
38
33
30
Video Clamp
Channel 1
Channel 2
Channel 3
Clamp Pulse
Normally a 100 nF capacitor is connected to each of
these pins.
1.5 V
38, 33, 30
Video Out
Video Emitter
Output
Channel 1
Channel 2
Channel 3
VCC
VCC
Pins 39, 34, and 31 are the emitter outputs of the
three video amplifier and have an internal 33
three video amplifier, and have an internal 33
resistor.
39
34
31
Rc
Blanking
40, 37, 32
The emitter dc voltage is controlled by the brightness
control.
Video Collector
Output
Channel 1
Channel 2
Channel 3
Video Amp
The current through each collector and emitter should
not exceed 40 mA.
40
37
32
B i ht
Brightness
Contrast
39, 34, 31
To
Re
Clamp Circuit
35, 36
N/C
These two pins are internally connected to each other,
and nothing else.
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