发明名称 |
CAPACITANCE SENSOR WITH SENSOR CAPACITANCE COMPENSATION |
摘要 |
A capacitance sensing circuit may include a switching circuit configured to generate a sensor current by charging and discharging a capacitive sensor electrode, and a current mirror that generates a mirror current based on the sensor current. Based on the mirror current, a measurement circuit generates an output signal representative of a capacitance of the capacitive sensor electrode. |
申请公布号 |
US2012286800(A1) |
申请公布日期 |
2012.11.15 |
申请号 |
US201213443718 |
申请日期 |
2012.04.10 |
申请人 |
MAHARYTA ANDRIY;RYSHTUN ANDRIY;CYPRESS SEMICONDUCTOR CORPORATION |
发明人 |
MAHARYTA ANDRIY;RYSHTUN ANDRIY |
分类号 |
G01R27/26 |
主分类号 |
G01R27/26 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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