Amplification device and measurement instrument
AssigneeHitachi, Ltd.
InventorsRyo KUWANA, Masahiro MASUNAGA, Isao HARA
Life of this patent
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Abstract
An amplification device includes: an amplification circuit in which a differential amplification unit to which a pair of input signals is input is constituted by a pair of transistors using SiC as a channel and which amplifies and outputs a difference in voltage between the pair of input signals; and a voltage control unit which controls voltages of respective signal input terminals to which the pair of input signals is input to be equal to or less than voltages of a positive power supply and a negative power supply supplied to the amplification circuit.
Claims10
An amplification device comprising:
- an amplification circuit in which a differential amplification unit to which a pair of input signals is input is constituted by a pair of transistors using SiC as a channel and which amplifies and outputs a difference in voltage between the pair of input signals;
- and
- a voltage control unit which controls voltages of respective signal input terminals to which the pair of input signals is input to be equal to or less than voltages of a positive power supply and a negative power supply supplied to the amplification circuit.
A measurement instrument which includes a measurement unit which outputs a signal according to a measurement result for a target, and an amplification device which amplifies the signal output by the measurement unit, wherein
- the amplification device includes
- an amplification circuit in which a differential amplification unit to which a pair of input signals is input is constituted by a pair of transistors using SiC as a channel and which amplifies and outputs a difference in voltage between the pair of input signals;
- and
- a voltage control unit which controls voltages of respective signal input terminals to which the pair of input signals is input to be equal to or less than voltages of a positive power supply and a negative power supply supplied to the amplification circuit.
Dependencies are inferred from the claim text.