Invention Grant
- Patent Title: Calibration of continuous-time residue generation systems for analog-to-digital converters
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Application No.: US17389428Application Date: 2021-07-30
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Publication No.: US11563442B2Publication Date: 2023-01-24
- Inventor: Victor Kozlov , Sharvil Pradeep Patil , Hajime Shibata
- Applicant: Analog Devices International Unlimited Company
- Applicant Address: IE Limerick
- Assignee: Analog Devices International Unlimited Company
- Current Assignee: Analog Devices International Unlimited Company
- Current Assignee Address: IE Limerick
- Agency: Akona IP PC
- Main IPC: H03M1/10
- IPC: H03M1/10 ; H03M1/06

Abstract:
Calibration of continuous-time (CT) residue generation systems can account and compensate for mismatches in magnitude and phase that may be caused by fabrication processes, temperature, and voltage variations. In particular, calibration may be performed by providing one or more known test signals as an input to a CT residue generation system, analyzing the output of the system corresponding to the known input, and then adjusting one or more parameters of a forward and/or a feedforward path of the system so that the difference in transfer functions of these paths may be reduced/minimized. Calibrating CT residue generation systems using test signals may help decrease the magnitude of the residue signals generated by such systems, and, consequently, advantageously increase an error correction range of such systems or of further stages that may use the residue signals as input.
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