A/d conversion device and battery monitoring integrated circuit device
AssigneeDenso Corporation
InventorsShogo KAWAHARA, Tomohiro NEZUKA, Kunihiko NAKAMURA
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Abstract
An analog-to-digital (A/D) conversion device comprises: an integrator to which an input signal and an output of a digital-to-analog converter (DAC) are input; a quantizer to which a reference potential is applied and to which the output of the integrator is input; the DAC that performs digital-to-analog conversion of the output of the quantizer; a control circuit that performs switching between two or more operation modes including a second-order ΔΣ mode and a cyclic mode; and a potential generation circuit that switches the reference potential to be applied to the quantizer depending on the two or more operation modes.
Claims11
An analog-to-digital (A/D) conversion device comprising:
- an integrator to which an input signal and an output of a digital-to-analog converter (DAC) are input;
- a quantizer to which a reference potential is applied and to which the output of the integrator is input;
- the DAC that performs digital-to-analog conversion of the output of the quantizer;
- a control circuit that performs switching between two or more operation modes including a second-order ΔΣ mode and a cyclic mode;
- and
- a potential generation circuit that switches the reference potential to be applied to the quantizer depending on the two or more operation modes.
A battery monitoring integrated circuit device comprising
- an analog-to-digital conversion device including:
- an integrator to which an input signal and an output of a digital-to-analog converter (DAC) are input;
- a quantizer to which a reference potential is applied and to which the output of the integrator is input;
- the DAC that includes a DAC capacitance and performs digital-to-analog conversion of an output of the quantizer;
- a control circuit that performs switching between two or more operation modes including a second-order ΔΣ mode and a cyclic mode;
- and
- a potential generation circuit that switches the reference potential to be applied to the quantizer depending on the two or more operation modes.
Dependencies are inferred from the claim text.