Relaxationsoszillator mit einer Technik zur Reduktion des Alterungseffekts

Details

Veröffentlichungs-Nr.

EP3490147

Aktenzeichen

EP17204038

Anmeldetag

28. November 2017

Veröffentlichung

10. April 2024

Erteilung

10. April 2024

Rechtsraum

EP

IPC

H03K3/011H03K3/013H03K3/0231

Abstract

A relaxation oscillator with an aging effect reduction technique comprises a comparator (CP) coupled with its input side (CP1, CP2) to a network comprising at least one capacitor (C, C1, C2), a plurality of transistors (Ml, M2, M3, M4) and a plurality of controllable switches (SW11, ..., SW8, SW111, ..., SW180). The relaxation oscillator uses a switching method such that the roles of current/voltage generator's transistor and current mirror transistor are periodically swapping by the output signal of the relaxation oscillator. Reducing mismatch of operating points between current/voltage generator and current mirror transistors achieves a decrease of frequency degradation caused by aging effect.

Anmelder

Firma

ams AG

Land

🇦🇹 Österreich

Fachgebiete