Remote differential voltage sensing

US10175272B2 · kind B2 · utility

Assignee

• Intersil Americas LLC · US

Inventors

• Wei Chen · Beijing, CN
• Xin Zhang · Hangzhou City, CN
• Gwilym Francis Luff · Great Shelford, GB
• Peter J. Mole · St Albans, GB

Key dates

• Filing date: Apr 22, 2015
• Grant date: Jan 8, 2019
• Expiry date: Aug 4, 2036

Classification

• Technology area (CPC G): Physics
• CPC primary: G05F1/56
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A remote differential voltage sensing circuit having a voltage input (Vin) and a voltage output (Vout), comprises a dual differential input stage including a common-source or common-collector differential input stage in parallel with a common-gate or common-base differential input stage. The common-source or collector differential input stage has differential inputs, one coupled to the voltage input (Vin) and the other coupled to the voltage output (Vout). The common-gate or common-base differential input stage has differential inputs, one coupled to a local ground (Agnd) and the other coupled to a remote ground (Rgnd). An output stage is driven by an output of the dual differential input stage and produces an output voltage at the voltage output (Vout). A compensation network is coupled between the voltage output (Vout) and the output of the dual differential input stage.