公开(公告)号：US20220283207A1

公开(公告)日：2022-09-08

申请号：US17824505

申请日：2022-05-25

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： RAJAT CHAUHAN ,  DANIELLE GRIFFITH ,  PER TORSTEIN ROINE ,  JAMES MURDOCK ,  BERNHARD RUCK

IPC: G01R19/257 ,  H03M1/66 ,  G01R31/3835

Abstract: One example relates to a monitoring circuit that includes a capacitive digital-to-analog converter that receives a binary code, a reference voltage, a monitored voltage, and a ground reference, the capacitive digital-to-analog converter outputting an analog signal based on the binary code, the reference voltage, the monitored voltage, and the ground reference. The monitoring circuit further includes a comparator including a first input coupled to receive the analog signal and a second input coupled to the reference voltage, the comparator comparing the analog signal to the reference voltage and outputting a comparator signal based on the comparison. The monitoring circuit yet further includes a binary code generator that generates the binary code based on the comparator signal, the binary code approximating a magnitude of the monitored voltage.

公开(公告)号：US20190094275A1

公开(公告)日：2019-03-28

申请号：US15717219

申请日：2017-09-27

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： RAJAT CHAUHAN ,  DANIELLE GRIFFITH ,  PER TORSTEIN ROINE ,  JAMES MURDOCK ,  BERNHARD RUCK

IPC: G01R19/257 ,  G01R31/36 ,  H03M1/66

Abstract: One example relates to a monitoring circuit that includes a capacitive digital-to-analog converter that receives a binary code, a reference voltage, a monitored voltage, and a ground reference, the capacitive digital-to-analog converter outputting an analog signal based on the binary code, the reference voltage, the monitored voltage, and the ground reference. The monitoring circuit further includes a comparator including a first input coupled to receive the analog signal and a second input coupled to the reference voltage, the comparator comparing the analog signal to the reference voltage and outputting a comparator signal based on the comparison. The monitoring circuit yet further includes a binary code generator that generates the binary code based on the comparator signal, the binary code approximating a magnitude of the monitored voltage.