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CAT513 Datasheet(PDF) 8 Page - Catalyst Semiconductor |
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CAT513 Datasheet(HTML) 8 Page - Catalyst Semiconductor |
8 / 10 page CAT513 8 Doc. No. ________ 3/01 M-1 Advance Information APPLICATION CIRCUITS (Cont.) Coarse-Fine Offset Control by Averaging DAC Outputs for Single Power Supply Systems Coarse-Fine Offset Control by Averaging DAC Outputs for Dual Power Supply Systems + – FINE ADJUST DAC COARSE ADJUST DAC GND V L REF V H REF VDD RC 127RC +V +5V VREF R = ————— C 256 1 µA VREF * Fine adjust gives ± 1 LSB change in V when V = ——— OFFSET VREF 2 OFFSET V OFFSET + – FINE ADJUST DAC COARSE ADJUST DAC GND V L REF V H REF VDD RC 127RC +V +5V +VREF -V -VREF Ro R = ——————————— C 1 µA OFFSET VOFFSET REF (+V ) - (V ) R = ——————————— o 1 µA OFFSET REF (-V ) + (V ) + + Digitally Trimmed Voltage Reference Digitally Controlled Voltage Reference OPT 504 LT 1029 I > 2 mA V+ GND VDD V = 5.000V REF V H REF V L REF CONTROL & DATA OPT 504 GND VDD V H REF V L REF CONTROL & DATA + – 15K 10 µF 5.1V 10K 4.02 K 1.00K 10 µF 35V LM 324 1N5231B MPT3055EL 28 - 32V OUTPUT 0 - 25V @ 1A CAT513 CAT513 |
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