专利检索 ap:("TEXAS INSTRUMENTS INCORPORATED") AND inv:"Srinivas Kumar Naru" 第 1 页

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发明授权
Auxiliary ADC-based calibration for non-linearity correction of ADC 有权

公开(公告)号：US11784660B2

公开(公告)日：2023-10-10

申请号：US17589533

申请日：2022-01-31

申请人： TEXAS INSTRUMENTS INCORPORATED

发明人： Nagarajan Viswanathan , Himanshu Varshney , Vinam Arora , Charls Babu , Srinivas Kumar Naru

IPC分类号： H03M1/10 , H03M1/50 , H03M1/36

CPC分类号： H03M1/502 , H03M1/1009 , H03M1/362

摘要： In an example, a system includes an input channel and a voltage to delay converter (V2D) coupled to the input channel. The system also includes a first multiplexer coupled to the V2D and an analog-to-digital converter (ADC) coupled to the first multiplexer. The system includes a second multiplexer coupled to the input channel and an auxiliary ADC coupled to the second multiplexer. The system includes calibration circuitry coupled to an output of the auxiliary ADC, where the calibration circuitry is configured to correct a non-linearity in a signal provided by the input channel. The calibration circuitry is also configured to determine the non-linearity of the signal provided to the ADC relative to the signal provided to the auxiliary ADC.