发明名称 |
Detection circuit, physical quantity measurement circuit, physical quantity measurement device, and electronic instrument |
摘要 |
A detection circuit includes a detection terminal to which an alternating current signal from a physical quantity transducer is input, a detection current/voltage conversion amplifier circuit that converts the alternating current signal input through the detection terminal into a voltage signal, an evaluation terminal that supplies an evaluation voltage signal to the detection current/voltage conversion amplifier circuit, an input resistor that has a given resistance ratio with respect to a feedback resistor; and a switch circuit of the detection circuit provided in a signal path that connects the evaluation terminal and an input node of the detection current/voltage conversion amplifier circuit.
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申请公布号 |
US7868623(B2) |
申请公布日期 |
2011.01.11 |
申请号 |
US20080155383 |
申请日期 |
2008.06.03 |
申请人 |
SEIKO EPSON CORPORATION |
发明人 |
YOSHIDA NAOKI;KANAI MASAHIRO;OTSUKA EITARO |
分类号 |
G01R31/02;G01P15/10 |
主分类号 |
G01R31/02 |
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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