A compact rail-to-rail output stage for CMOS operational amplifiers


Sekerkiran B.

IEEE JOURNAL OF SOLID-STATE CIRCUITS, vol.34, no.1, pp.107-110, 1999 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 34 Issue: 1
  • Publication Date: 1999
  • Doi Number: 10.1109/4.736663
  • Journal Name: IEEE JOURNAL OF SOLID-STATE CIRCUITS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.107-110
  • Istanbul Technical University Affiliated: No

Abstract

This paper presents a CMOS output stage devised for driving heavy resistive loads. An operational amplifier of this type has been fabricated in a 3-mu m double-polysilicon CMOS technology. With a supply voltage of -/+5 V and load of 470 Ohm, the amplifier has a -/+4.6-V output swing and features a 60-mA short-circuit output current. Although simple, the proposed configuration enables the output transistors to be driven efficiently.