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AD7147A データシート(PDF) 16 Page - Analog Devices |
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AD7147A データシート(HTML) 16 Page - Analog Devices |
16 / 69 page AD7147A Rev. B | Page 15 of 68 A button sensor generally requires one sequencer stage; this is shown in Figure 25 as B1. However, it is possible to configure two button sensors to operate differentially for one conversion stage. Only one button can be activated at a time; pressing both buttons simultaneously results in neither button being activated. The configuration with two button sensors operating differen- tially requires one conversion stage and is shown in Figure 25, with B2 and B3 representing the differentially configured button sensors. A wheel sensor requires eight stages, whereas a slider requires two stages. The result from each stage is used by the host soft- ware to determine the user’s position on the slider or wheel. The algorithms that perform this process are available from Analog Devices and are free of charge but require signing a software license. STAGE11 STAGE10 STAGE9 STAGE8 STAGE7 STAGE6 STAGE5 STAGE4 STAGE3 STAGE2 STAGE1 STAGE0 Σ-Δ 16-BIT ADC CIN0 CIN1 CIN2 CIN3 CIN4 CIN5 CIN6 CIN7 CIN8 CIN9 CIN10 CIN11 CIN12 Figure 24. CDC Conversion Stages CDC STAGE0 + – STAGE1 + – CDC AD7147A SEQUENCER CDC STAGE2 + – STAGE3 + – CDC CDC STAGE4 + – STAGE5 + – CDC CDC STAGE6 + – STAGE7 + – CDC SCROLL WHEEL BUTTONS STAGE8 CDC + – STAGE9 CDC + – AD7147A SEQUENCER B1 B2 B3 STAGE10 CDC + – STAGE11 CDC + – AD7147A SEQUENCER SLIDER Figure 25. Sequencer Setup for Sensors |
同様の部品番号 - AD7147A |
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同様の説明 - AD7147A |
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