Verstärkerschaltung und Verstärkeranordnung

Details

Veröffentlichungs-Nr.

EP3012972

Aktenzeichen

EP14190129

Anmeldetag

23. Oktober 2014

Veröffentlichung

19. Juli 2017

Erteilung

19. Juli 2017

Rechtsraum

EP

IPC

H03F1/14H03F3/45H03F3/68

Abstract

An amplifier circuit with a differential input and a differential output comprises a first and a second pair of matched transistors having a first threshold voltage and comprising control terminals connected to the differential input. A first and a second pair of triplets of transistors having a second threshold voltage being different from the first threshold voltage is connected to each one of the pairs of matched transistors such that respective current paths are formed with these transistors. The currents are split up to bias current sources and to an output stage such that the current is reused for implementing a class AB operation. Furthermore, a current through bias transistors connected in the current path of the first and the second pair of matched transistors is mirrored to output transistors being arranged in a differential current path of the output stage.

Anmelder

Firma

ams AG

Land

🇦🇹 Österreich

Fachgebiete