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CAT5125TBI-50-T10 Datasheet(PDF) 6 Page - Catalyst Semiconductor |
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CAT5125TBI-50-T10 Datasheet(HTML) 6 Page - Catalyst Semiconductor |
6 / 16 page CAT5110, CAT5118, CAT5119, CAT5123, CAT5124, CAT5125 6 Doc. No. MD-220, Rev. F © Catalyst Semiconductor, Inc. Characteristics subject to change without notice APPlICATIOns InFOrMATIOn The MiniPots 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 CAT50/CAT525. This can be done by connecting the wiper output to the positive input of a noninverting op amp as shown in Figure 3. Figure 4 shows a similar circuit for the CAT59/CAT524. Figure 3. Positive lCD bias Control Figure 4. Positive lCD bias Control ADjusTAble GAIn Figure 5 shows how to use either a variable resistor or a potentiometertodigitallyadjustthegainofanoninverting op amp configuration, by connecting the Minipot in series with a resistor to ground. The MiniPots have a low 5ppm/ºC ratiometric tempco that allows for a very stable adjustable gain configuration over temperature. Figure 5a. Adjustable Gain Circuit Figure 5b. Adjustable Gain Circuit 30V W L H +5V VOUT CAT5110/CAT5125 30V L H +5V VOUT CAT5119/CAT5124 VCC L H VIN VOUT VCC L H W VIN VOUT CAT5110/CAT5125 CAT5118/CAT5123 |
Similar Part No. - CAT5125TBI-50-T10 |
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