MC13081X Просмотр технического описания (PDF) - Motorola => Freescale
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MC13081X
Motorola => Freescale
MC13081X Datasheet PDF : 20 Pages
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Pin
Name
Subcontrast
Control
20
Channel 1
24
Channel 2
26
Channel 3
MC13081X
PIN FUNCTION DESCRIPTION (continued)
Equivalent Internal Circuit
Description
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
Video Inputs
23
Channel 1
25
Channel 2
27
Channel 3
2.4 V
Video 2.2 µF 23, 25, 27
Input
75 Ω
Clamp
5.0 V
These two pins are internally connected to each other,
and nothing else.
The input coupling capacitor is used for input clamp
storage. The maximum source impedance is 100 Ω.
Polarity of the input video signal is positive. Amplitude
should be nominally 0.7 Vpp.
6.2 k 2.7 k
28
Video Ground
29
Video VCC1
Video Clamp
38
Channel 1
33
Channel 2
30
Channel 3
Video Emitter
Output
39
Channel 1
34
Channel 2
31
Channel 3
Video Collector
Output
40
Channel 1
37
Channel 2
32
Channel 3
35, 36 N/C
1.5 V
Video Out
Clamp Pulse
38, 33, 30
Blanking
Video Amp
Brightness
Contrast
VCC
To
Clamp Circuit
VCC
Rc
40, 37, 32
39, 34, 31
Re
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.
Connected to a 8.0, V ±5%, dc supply. Decoupling is
required at this pin.
Normally a 100 nF capacitor is connected to each of
these pins.
Pins 39, 34, and 31 are the emitter outputs of the
three video amplifier, and have an internal 33 Ω
resistor.
The emitter dc voltage is controlled by the brightness
control.
The current through each collector and emitter should
not exceed 40 mA.
These two pins are internally connected to each other,
and nothing else.
8
MOTOROLA ANALOG IC DEVICE DATA
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