Analog-to-digital conversion circuits and methods, chips, and electronic devices
AssigneeChipsea Technologies (Shenzhen) Corp.
InventorsWenjie YIN, Weizheng HAO, Weihui LIU
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Abstract
An analog-to-digital conversion circuit includes: a digital-to-analog conversion capacitor array; a calibration capacitor array for calibrating the digital-to-analog conversion capacitor array; and a logic controller for selecting the digital-to-analog conversion capacitor array and the calibration capacitor array based on a range control signal to sample and/or convert an analog input signal, to reduce or increase the analog input signal according to a ratio corresponding to the range control signal.
Claims20
An analog-to-digital conversion circuit, comprising:
- a digital-to-analog conversion capacitor array;
- a calibration capacitor array for calibrating the digital-to-analog conversion capacitor array;
- and
- a logic controller for selecting the digital-to-analog conversion capacitor array and the calibration capacitor array based on a range control signal to sample and/or convert an analog input signal, to reduce or increase the analog input signal according to a ratio corresponding to the range control signal.
A chip comprising an analog-to-digital conversion circuit, the analog-to-digital conversion circuit comprising:
- a digital-to-analog conversion capacitor array;
- a calibration capacitor array for calibrating the digital-to-analog conversion capacitor array;
- and
- a logic controller for selecting the digital-to-analog conversion capacitor array and the calibration capacitor array based on a range control signal to sample and/or convert an analog input signal, to reduce or increase the analog input signal according to a ratio corresponding to the range control signal.
An analog-to-digital conversion method, comprising:
- selecting, based on a range control signal, a digital-to-analog conversion capacitor array and a calibration capacitor array to sample and/or convert an analog input signal, to reduce or increase the analog input signal according to a ratio corresponding to the range control signal,
- wherein the calibration capacitor array is configured to calibrate the digital-to-analog conversion capacitor array.
Dependencies are inferred from the claim text.