Referenzspannungsgenerator

Details

Veröffentlichungs-Nr.

EP3677982

Aktenzeichen

EP19217070

Anmeldetag

17. Dezember 2019

Veröffentlichung

23. Oktober 2024

Erteilung

23. Oktober 2024

Rechtsraum

EP

IPC

G05F3/30

Abstract

A reference voltage generator comprises: an amplifier; a capacitor network including one or more capacitors; and a switch control circuit to control connectivity of the capacitor network with respect to the input/output nodes of the amplifier. During operation, the switch control circuit controls connectivity of a first capacitor (in the capacitor network) in and out of a feedback path of the amplifier to produce a substantially constant reference voltage. For example, the reference voltage generator provides input offset voltage correction of the amplifier via repeatedly switching between: i) a first mode in which the first capacitor is absent from the feedback path of the amplifier during charging of the first capacitor, and ii) a second mode of inserting the charged first capacitor into the feedback path of the amplifier. Correction of the input offset voltage of the amplifier results in generation of a more accurate reference voltage over temperature.

Anmelder

Firma

Infineon Technologies Austria AG

Land

🇦🇹 Österreich

Fachgebiete