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MC13081XB bảng dữ liệu(PDF) 8 Page - Motorola, Inc |
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MC13081XB bảng dữ liệu(HTML) 8 Page - Motorola, Inc |
8 / 20 page MC13081X 8 MOTOROLA ANALOG IC DEVICE DATA PIN FUNCTION DESCRIPTION (continued) Pin Description Equivalent Internal Circuit Name 20 Subcontrast Control Ch l 1 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 Channel 1 Channel 2 Channel 3 50 k Gain 20, 24, 26 26 Channel 3 7.5 k 20, 24, 26 21, 22 N/C These two pins are internally connected to each other, and nothing else. 23 25 Video Inputs Channel 1 Channel 2 5.0 V 2.4 V Clamp 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 25 27 Channel 2 Channel 3 Video Input 23, 25, 27 2.2 µF Polarity of the input video signal is positive. Amplitude should be nominally 0.7 Vpp. 75 Ω 6.2 k 2.7 k Input 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 Video Clamp Channel 1 Clamp Pulse Normally a 100 nF capacitor is connected to each of these pins 38 33 30 Channel 1 Channel 2 Channel 3 1.5 V p 38, 33, 30 these pins. 30 Channel 3 1.5 V Video Out Video Emitter Output VCC V Pins 39, 34, and 31 are the emitter outputs of the three video amplifier and have an internal 33 Ω 39 Output Channel 1 C VCC three video amplifier, and have an internal 33 Ω resistor. 34 31 Channel 2 Channel 3 Rc Blanking 40, 37, 32 The emitter dc voltage is controlled by the brightness l 31 Channel 3 Video Collector Video Amp 40, 37, 32 gy g control. Th t th h h ll t d itt h ld 40 Video Collector Output Channel 1 Video Amp Bi ht 39, 34, 31 The current through each collector and emitter should not exceed 40 mA. 40 37 Channel 1 Channel 2 Brightness Contrast To R 39, 34, 31 not exceed 40 mA. 32 Channel 3 Contrast To Clamp Circuit Re 35, 36 N/C These two pins are internally connected to each other, and nothing else. |
Số phần tương tự - MC13081XB |
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Mô tả tương tự - MC13081XB |
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