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US 10,044,363 B2Granted
Semiconductor device and AD conversion device
AssigneeRenesas Electronics Corporation
InventorNorio Sugita
Life of this patent
Estimating the term…
Abstract
A semiconductor device includes an AD conversion unit that performs AD conversion on an input signal based on a reference voltage to be supplied, a reference voltage detection unit that detects the reference voltage supplied to the AD conversion unit, and a control unit that corrects a result of the AD conversion by the AD conversion unit in accordance with the reference voltage detected by the reference voltage detection unit. Thereby, AD conversion can be performed accurately even when a reference voltage varies.
Claims11
A semiconductor device comprising:
- a first AD conversion unit configured to:
- receive an input signal and a first reference voltage, and
- perform first AD conversion on the input signal based on the first reference voltage;
- a second AD conversion unit different from the first AD conversion unit and configured to:
- receive the first reference voltage and a second reference voltage different from the first reference voltage,
- perform second AD conversion on the first reference voltage based on the second reference voltage, and
- output a result of the second AD conversion;
- and
- a control unit configured to correct a result of the first AD conversion in accordance with the result of the second AD conversion.
6 more elements
An AD conversion device comprising:
- a semiconductor device including:
- a first AD conversion unit configured to perform first AD conversion on an input signal based on a first reference voltage to be supplied, and a control unit that corrects a result of the first AD conversion;
- and
- a second AD conversion unit different from the first AD conversion unit and configured to:
- receive the first reference voltage and a second reference voltage different from the first reference voltage,
- perform second AD conversion on the first reference voltage based on the second reference voltage, and
- output a result of the second AD conversion,
- wherein the control unit corrects the result of the first AD conversion in accordance with the result of the second AD conversion.
5 more elements
An AD conversion device comprising:
- first power generation circuit;
- a second power generation circuit different from the first power generation circuit;
- and
- a semiconductor device, wherein the semiconductor device includes:
- a first AD conversion unit that performs a first AD conversion on an input signal based on a first reference voltage supplied from the first power generation circuit,
- a second AD conversion unit that performs a second AD conversion on the first reference voltage based on a second reference voltage supplied from the second power generation circuit, and
- a control unit that corrects a result of the first AD conversion by the first AD conversion unit in accordance with a result of the second AD conversion by the second AD conversion unit.
4 more elements
Dependencies are inferred from the claim text.