Differential Input Circuit and Amplifier
AssigneeRohm Co., Ltd.
InventorMasaki ASAKAWA
Life of this patent
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Abstract
The present disclosure provides a differential input circuit. The differential input circuit includes: a P-channel FET differential input pair; an N-channel FET differential input pair; a first power line configured to receive a first voltage; a second power line configured to receive a second voltage lower than the first voltage; a first P-channel FET; a constant current source (CS1) disposed between the first power supply line and the P-channel FET differential input pair as well as the first P-channel FET; a current mirror circuit disposed between the first P-channel FET as well as the N-channel FET differential input pair and the second power supply line; and a logic circuit configured to supply a binarized logic signal to a gate of the first P-channel FET.
Claims8
A differential input circuit, comprising:
- a P-channel field effect transistor (FET) differential input pair;
- an N-channel FET differential input pair;
- a first power supply line, configured to receive a first voltage;
- a second power supply line, configured to receive a second voltage lower than the first voltage;
- a first P-channel FET;
- a constant current source, disposed between the first power supply line and the P-channel FET differential input pair, and between the first power supply line and the first P-channel field effect transistor;
- a current mirror circuit, disposed between the first P-channel FET and the second power supply line, and between the N-channel FET differential input pair and the second power supply line;
- and
- a logic circuit, configured to supply a binarized logic signal to a gate of the first P-channel FET.
Dependencies are inferred from the claim text.