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CAT5124TBI-00-T3 Datasheet(PDF) 6 Page - ON Semiconductor |
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CAT5124TBI-00-T3 Datasheet(HTML) 6 Page - ON Semiconductor |
6 / 11 page CAT5110, CAT5118, CAT5119, CAT5123, CAT5124, CAT5125 http://onsemi.com 6 APPLICATIONS INFORMATION The devices are intended for circuits requiring digitally controlled adjustable resistance, such as LCD contrast control, where voltage biasing adjusts the display contrast. Alternative Positive LCD Bias Control An op amp can be used to provide buffering and gain on the output of the CAT5110/CAT5125. This can be done by connecting the wiper output to the positive input of a noninverting op amp as shown in Figure 9. Figure 10 shows a similar circuit for the CAT5119/CAT5124. Adjustable Gain Figures 11 and 12 show how to use either a variable resistor or a potentiometer to digitally adjust the gain of a noninverting op amp configuration, by connecting the devices in series with a resistor to ground. The devices have a low 5 ppm/C ratiometric tempco that allows for a very stable adjustable gain configuration over temperature. 30 V W L H +5 V CAT5110/CAT5125 30 V L H +5 V CAT5119/CAT5124 L H L H W CAT5110/CAT5125 CAT5118/CAT5123 Figure 9. Positive LCD Bias Control Figure 10. Positive LCD Bias Control Figure 11. Adjustable Gain Circuit Figure 12. Adjustable Gain Circuit VOUT VOUT VIN VCC VOUT VIN VCC VOUT |
Similar Part No. - CAT5124TBI-00-T3 |
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Similar Description - CAT5124TBI-00-T3 |
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