Sign switching circuitry

US11791785B2 · kind B2 · utility

Assignee

• IMEC VZW · BE

Inventors

• Khaled Khalaf · Aarschot, BE
• Steven Brebels · Heverlee, BE

Key dates

• Filing date: Dec 21, 2020
• Grant date: Oct 17, 2023
• Expiry date: Dec 21, 2040

Classification

• Technology area (CPC H): Electricity
• CPC primary: H03G2201/307
• WIPO field: Basic communication processes
• WIPO sector: Electrical engineering

Abstract

A sign switching circuitry is disclosed. In one aspect, the sign switching circuitry includes a first and second differential common-source amplifier having common differential input nodes and common differential output nodes configured such that a differential input signal applied at the common differential input nodes is amplified to a differential output signal at the common differential output nodes with a fixed gain by the first amplifier and by the fixed gain with opposite sign by the second amplifier. The sign switching circuitry also includes a switching circuitry configured to activate the first common-source amplifier and deactivate the second common-source amplifier to amplify the differential input signal by the fixed gain, and to activate the second common-source amplifier and deactivate the first common-source amplifier to amplify the differential input signal by the fixed gain with opposite sign.