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AN4312 数据表(PDF) 22 Page - STMicroelectronics |
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AN4312 数据表(HTML) 22 Page - STMicroelectronics |
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22 / 36 page ![]() Surface sensor design AN4312 22/36 DocID024815 Rev 1 3.3.2 Interlaced patterned linear sensor When using the charge transfer acquisition principle, it is possible to use only three channels thanks to the higher resolution achieved. Figure 17. Interlaced linear touch sensor with 3 channels / 4 electrodes (half-ended electrodes design) 1. The teeth of the interlaced linear touch sensor must be perfectly regular. MS32449V1 Legend: Via between layers 10% meshed ground plane Copper electrode Up to 60 mm Full band width 3.6 mm Electrode gap 0.2~0.3 mm Tooth pitch 2.4 mm Squared end 0.2~0.3 mm Electrode/ground gap 2 mm |
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