公开(公告)号：US20240322802A1

公开(公告)日：2024-09-26

申请号：US18583474

申请日：2024-02-21

Applicant: STMicroelectronics (Grenoble) SAS

Inventor： Jean Camiolo ,  Geoffroy Godet

IPC: H03K3/023 ,  G01R15/16

CPC classification number: H03K3/023 ,  G01R15/16

Abstract: The present description concerns a derivative measurement circuit. The circuit implements successive cycles, each corresponding to a succession of first, second, and third periods of a clock signal. At each first period, an input voltage is memorized on a first capacitive element and the circuit delivers a voltage indicating a difference between a voltage on a second capacitive element and a voltage on a third capacitive element. At each second period, the input voltage is memorized on the second capacitive element and the circuit delivers a voltage indicating a difference between a voltage on the first capacitive element and the voltage on the third capacitive element. At each third period, the input voltage is memorized on the third capacitive element and the circuit delivers a voltage indicating a difference between the voltage on the second capacitive element and the voltage on the first capacitive element.