Sensor output circuit
US11381228B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 8, 2018 |
| Grant date | Jul 5, 2022 |
| Priority date | — |
| Expiry date | Mar 10, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F3/262
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A sensor output circuit is limited with high accuracy, and reduces radio wave radiation by signal transmission using a single-line signal. The sensor output includes a pulse signal Vin that changes according to a physical quantity to be measured, MOS transistors that perform on/off operations according to the pulse signal Vin, a constant current source that generates a constant current, a MOS transistor which generates a gate voltage of a MOS transistor, MOS transistors which form a current mirror circuit, and the MOS transistor which works to maintain a drain voltage of the MOS transistor at a constant voltage, and the output terminal which is driven by the MOS transistors connected in series. In addition, an output signal from the sensor output circuit is transmitted to a control circuit via an output signal line. The control circuit includes a pull-up resistor, a capacitor, and an input gate circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.