Signal processing circuit
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorNaruki Suetake
Life of this patent
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Abstract
A signal processing circuit can obtain a ratiometric output with high precision and high responsiveness in a relatively easy and simple way. A pulse generation circuit generates a pulse signal corresponding to an input signal. An integration part generates an integrated voltage having a time slope proportional to an input voltage with a duration specified by the pulse signal being set as an integration period. A hold part holds and outputs a difference voltage between a start voltage and an end voltage of the integrated voltage in the integration period. The integration period is specified at the timing of the pulse signal output from the pulse output circuit, and a ratiometric output is generated by sample holding the integral signal.
Claims7
A signal processing circuit comprising:
- a pulse generation part that generates a pulse signal corresponding to an input signal;
- an integration part that generates an integrated voltage having a time slope proportional to an input voltage with a duration specified by said pulse signal being set as an integration period;
- and
- a hold part that holds and outputs a difference voltage between a start voltage and an end voltage of said integrated voltage in said integration period.
A signal processing circuit comprising:
- a first integration part that generates an integrated voltage having a time slope proportional to a first voltage;
- a hysteresis voltage generation part that generates a hysteresis voltage proportional to a second voltage;
- a pulse generation part that generates a pulse signal based on said first integrated voltage and said hysteresis voltage;
- a second integration part that generates a second integrated voltage having a time slope proportional to a third voltage with a duration specified by said pulse signal being set as an integration period;
- and
- a hold part that holds and outputs a difference voltage between a start voltage and an end voltage of said second integrated voltage in said integration period.
Dependencies are inferred from the claim text.