Operational amplifier circuit
AssigneePanasonic Automotive Systems Co., Ltd.
InventorsMakoto TAKEMOTO, Yoshimichi OOYA, Yuki SAWADA
Life of this patent
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Abstract
An operational amplifier circuit includes a reference voltage generation circuit and a plurality of operational amplifier circuit sections. The reference voltage generation circuit is connected to a single power supply. The reference voltage generation circuit generates a reference voltage signal and outputs the reference voltage signal. Each of the operational amplifier circuit sections includes an operational amplifier that operates with the single power supply. An output impedance of the reference voltage generation circuit is set to cause a voltage fluctuation amount of the reference voltage signal to be equal to or less than a predetermined value.
Claims11
An operational amplifier circuit comprising:
- a reference voltage generation circuit connected to a single power supply, the reference voltage generation circuit being configured to generate a reference voltage signal and output the reference voltage signal;
- and
- a plurality of operational amplifier circuit sections, each section including an operational amplifier operating with the single power supply, wherein
- an output impedance of the reference voltage generation circuit is set to cause a voltage fluctuation amount of the reference voltage signal to be equal to or less than a predetermined value.
An operational amplifier circuit comprising:
- a plurality of reference voltage generation circuits connected to a single power supply, each of the reference voltage generation circuits being configured to generate and output a reference voltage signal;
- and
- a plurality of operational amplifier circuit sections, each section including an operational amplifier configured to operate with the single power supply, wherein
- the reference voltage generation circuits are each connected to a non-inverting input of one of the operational amplifier circuit sections in a one-to-one correspondence.
Dependencies are inferred from the claim text.