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US 10,320,410 B2Granted
Successive approximation type A/D conversion circuit
AssigneeSeiko Epson Corporation
InventorsHideo Haneda, Atsushi Tanaka
Life of this patent
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Abstract
A circuit device includes a code data generation circuit that generates code data which changes with time, and a successive approximation type A/D conversion circuit that performs code shift based on the code data and performs A/D conversion of an input signal. The code data generation circuit generates error data of which a frequency characteristic has a shaping characteristic and converts the error data into the code data.
Claims17
A circuit device comprising:
- a code data generation circuit configured to generate code data which changes with time;
- a first D/A conversion circuit configured to perform D/A conversion of the code data;
- and
- a successive approximation type A/D conversion circuit configured to perform code shift based on the code data and perform A/D conversion of an input signal,
- wherein the code data generation circuit generates error data of which a frequency characteristic has a shaping characteristic and converts the error data into the code data, and wherein the code data generation circuit converts the error data into the code data by an inverse function of a function of converting the code data into the error data.
2 more elements
Dependencies are inferred from the claim text.