Comparator with hysteresis and electronic device
Assigneeams-OSRAM AG
InventorEmir SERDAREVIC
Life of this patent
Estimating the term…
Abstract
A comparator includes an input stage configured to receive a pair of input signals to generate at least one differential current signal. The comparator further includes an output stage configured to generate an output signal depending on the differential current signal. The output stage includes a current mirror and a node electrically connected to the current mirror. The current mirror includes a first transistor, a second and a third transistor, the second and the third transistors being connected in parallel. The comparator further comprises a gain stage including a first and a second inverter, wherein an output of the first inverter is input to the second inverter. An output of the second inverter is configured to control the third transistor to be in a floating or conducting state.
Claims9
A comparator comprising:
- an input stage, configured to receive a pair of input signals to generate at least one differential current signal;
- an output stage configured to generate an output signal depending on the differential current signal, the output stage comprising a current mirror and a node electrically connected to the current mirror, the current mirror comprising a first transistor, a second and a third transistor, the second and the third transistors being connected in parallel;
- and
- a gain stage comprising a first and a second inverter, wherein an output of the first inverter is input to the second inverter,
- wherein an output of the second inverter is configured to control the third transistor to be in a floating or conducting state.
An electronic device comprising a comparator comprising:
- an input stage, configured to receive a pair of input signals to generate at least one differential current signal;
- an output stage configured to generate an output signal depending on the differential current signal, the output stage comprising a current mirror and a node electrically connected to the current mirror, the current mirror comprising a first transistor, a second and a third transistor, the second and the third transistors being connected in parallel;
- and
- a gain stage comprising a first and a second inverter, wherein an output of the first inverter is input to the second inverter,
- wherein an output of the second inverter is configured to control the third transistor to be in a floating or conducting state.
Dependencies are inferred from the claim text.