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AN4312 데이터시트(PDF) 22 Page - STMicroelectronics

부품명 AN4312
상세설명  Guidelines for designing touch sensing applications with surface sensors
PDF  36 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
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AN4312 데이터시트(HTML) 22 Page - STMicroelectronics

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Surface sensor design
AN4312
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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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