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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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ADC0803CD 데이터시트(PDF) 11 Page - NXP Semiconductors |
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ADC0803CD 데이터시트(HTML) 11 Page - NXP Semiconductors |
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11 / 18 page  Philips Semiconductors Product data ADC0803/0804 CMOS 8-bit A/D converters 2002 Oct 17 11 NOTE: The VREF/2 voltage is either 1/2 the VCC voltage or is that which is forced at Pin 9. VREF/2 VCC 20 VREF R R DIGITAL CIRCUITS ANALOG CIRCUITS 810 9 SL00021 Figure 6. Internal Reference Design (5V) VREF FS OFFSET ADJUST ZS OFFSET ADJUST 330 Ω 0.1 µF TO VREF/2 TO VIN(–) + – SL00022 Figure 7. Offsetting the Zero Scale and Adjusting the Input Range (Span) VOLTAGE REFERENCE VREF/2 a. Fixed Reference b. Fixed Reference Derived from VCC c. Optional Full Scale Adjustment VIN(+) VIN(–) VCC +5V + VREF/2 10 µF A/D A/D VIN(+) VIN(–) VCC VREF/2 + 10 µF +5V +5V 2 k Ω 100 Ω SL00023 2 k Ω 2 k Ω 2 k Ω Figure 8. Absolute Mode of Operation |
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