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


Sekerkiran B.

IEEE JOURNAL OF SOLID-STATE CIRCUITS, cilt.34, ss.107-110, 1999 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 34 Konu: 1
  • Basım Tarihi: 1999
  • Doi Numarası: 10.1109/4.736663
  • Dergi Adı: IEEE JOURNAL OF SOLID-STATE CIRCUITS
  • Sayfa Sayıları: ss.107-110

Özet

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.