JPS64433A - Method for constituting circuit of semiconductor pressure sensor - Google Patents

Method for constituting circuit of semiconductor pressure sensor

Info

Publication number
JPS64433A
JPS64433A JP15624487A JP15624487A JPS64433A JP S64433 A JPS64433 A JP S64433A JP 15624487 A JP15624487 A JP 15624487A JP 15624487 A JP15624487 A JP 15624487A JP S64433 A JPS64433 A JP S64433A
Authority
JP
Japan
Prior art keywords
voltage
resistor
terminal
amplifier
output terminal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP15624487A
Other languages
Japanese (ja)
Other versions
JPH061227B2 (en
JPH01433A (en
Inventor
Kazuyuki Kato
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fuji Electric Co Ltd
Original Assignee
Fuji Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fuji Electric Co Ltd filed Critical Fuji Electric Co Ltd
Priority to JP15624487A priority Critical patent/JPH061227B2/en
Publication of JPH01433A publication Critical patent/JPH01433A/en
Publication of JPS64433A publication Critical patent/JPS64433A/en
Publication of JPH061227B2 publication Critical patent/JPH061227B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Measuring Fluid Pressure (AREA)

Abstract

PURPOSE: To widen the operating voltage range of a sensor output voltage by setting the value of the resistors constituting a differential amplifier at the resistance value satisfying the derived conduction by combination of an operational amplifier.
CONSTITUTION: The resistor R1 is provided between an inversion input terminal T- of the operational amplifier OP1 and an output terminal T4 of the amplifier OP1 and the resistor R2 is provided between a bridge output terminal T2 and the terminal T-. The resistor R3 is provided between the bridge output terminal T1 and the non- inversion input terminal T+ of the amplifier OP1 and the resistor R4 is provided between the output terminal T3 of a reference voltage Vd and the terminal T+. The resistance values are so set that the product of the resistance values of the resistors R1 and R3 is larger than the product of the resistance values of the resistors R2 and R4. Such characteristics that the sensor output voltage Vo is nearly zero until the sensor pressure increases to a prescribed pressure and that the voltage Vo increases linearly when said pressure increases to the prescribed pressure or above are, therefore, obtd. The operating voltage range of the voltage Vo is thus widened by shifting the characteristics to the direction where the level of the voltage Vo lowers.
COPYRIGHT: (C)1989,JPO&Japio
JP15624487A 1987-06-23 1987-06-23 Semiconductor pressure sensor circuit configuration method Expired - Lifetime JPH061227B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15624487A JPH061227B2 (en) 1987-06-23 1987-06-23 Semiconductor pressure sensor circuit configuration method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15624487A JPH061227B2 (en) 1987-06-23 1987-06-23 Semiconductor pressure sensor circuit configuration method

Publications (3)

Publication Number Publication Date
JPH01433A JPH01433A (en) 1989-01-05
JPS64433A true JPS64433A (en) 1989-01-05
JPH061227B2 JPH061227B2 (en) 1994-01-05

Family

ID=15623528

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15624487A Expired - Lifetime JPH061227B2 (en) 1987-06-23 1987-06-23 Semiconductor pressure sensor circuit configuration method

Country Status (1)

Country Link
JP (1) JPH061227B2 (en)

Also Published As

Publication number Publication date
JPH061227B2 (en) 1994-01-05

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