Title:
センサ装置
Document Type and Number:
Japanese Patent JP5926081
Kind Code:
B2
Abstract:
Provided is a sensor device capable of removing the influence of each offset voltage of a sensor element, a differential amplifier, and an amplifier of the sensor device, to thereby detect a physical quantity with high precision. The sensor device includes: a switch circuit, which is connected to a first terminal pair and a second terminal pair of the sensor element, for controlling switching of the terminal pairs and outputting detection voltages; a differential amplifier, which includes a first input terminal and a second input terminal connected to a first output terminal and a second output terminal of the switch circuit, respectively, for outputting a result obtained by amplifying a difference of the detection voltages; an amplifier including at least two differential input pairs, one of which inputs the differential signal output from the differential amplifier, and at least one of which inputs a reference signal corresponding to a physical quantity to be detected; and a detection voltage setting circuit for outputting the reference signal to the amplifier.
Inventors:
Minoru Ariyama
Daisuke Muraoka
Tokio ground
Kentaro Fukai
Daisuke Muraoka
Tokio ground
Kentaro Fukai
Application Number:
JP2012066004A
Publication Date:
May 25, 2016
Filing Date:
March 22, 2012
Export Citation:
Assignee:
SII Semiconductor Corporation
International Classes:
G01R33/07; H03K17/95
Domestic Patent References:
| JP2004340782A | ||||
| JP2010283522A | ||||
| JP2010281801A | ||||
| JP200931027A |