公开(公告)号：US20240372358A1

公开(公告)日：2024-11-07

申请号：US18640068

申请日：2024-04-19

Applicant: Infineon Technologies AG

Inventor： Markus Seebacher ,  Herwig Wappis

IPC: H02H9/04 ,  H01L27/02 ,  H03K17/687

Abstract: A semiconductor device has an analogue-to-digital converter (ADC) driven by a plurality of analogue input channels, each having an input pad and an input node connected to the input pad. The input node is connected to an input of the ADC through a respective switch. The analogue input channels comprise a high-side clamp transistor connected between the input node and a high-side power rail, a high-side comparator to clamp the input node to a high-side clamp voltage when the voltage at the input node exceeds a high-side comparison voltage, a low-side clamp transistor connected between the input node and a low-side power rail, and a low-side comparator for turning on the low-side clamp transistor to clamp the input node to a low-side clamp voltage when the voltage at the input node falls below a low-side comparison voltage.