New low-voltage class AB/AB CMOS op amp with rail-to-rail input/output swing

Author

Ramírez-Angulo, Jaime ; Sawant, Milind-Subhash ; Thoutam, Shanta ; López-Martín, Antonio J. ; Carvajal, Ramon G.

Author_Institution

Klipsch Sch. of Electr. & Comput. Eng., New Mexico State Univ., Las Cruces, NM, USA

Volume

53

Issue

4

fYear

2006

fDate

4/1/2006 12:00:00 AM

Firstpage

289

Lastpage

293

Abstract

A new low-voltage CMOS Class AB/AB fully differential opamp with rail-to-rail input/output swing and supply voltage lower than two V_GS drops is presented. The scheme is based on combining floating-gate transistors and Class AB input and output stages. The op amp is characterized by low static power consumption and enhanced slew-rate. Moreover the proposed opamp does not suffer from typical reliability problems related to initial charge trapped in the floating-gate devices. Simulation and experimental results in 0.5-μm CMOS technology verify the scheme operating with ±0.9-V supplies and close to rail-to-rail input and output swing.

Keywords

CMOS analogue integrated circuits; differential amplifiers; low-power electronics; operational amplifiers; 0.5 micron; CMOS integrated circuits; charge trapped; differential opamp; floating gate transistors; low power design; low static power consumption; low voltage circuits; reliability; slew rate; CMOS technology; Circuit simulation; Energy consumption; Fabrication; Integrated circuit reliability; Integrated circuit technology; Power dissipation; Rail to rail inputs; Silicon; Voltage; Amplifiers; CMOS integrated circuits; analog circuits; low power design; low-voltage circuits;

fLanguage

English

Journal_Title

Circuits and Systems II: Express Briefs, IEEE Transactions on

Publisher

ieee

ISSN

1549-7747

Type

jour

DOI

10.1109/TCSII.2005.862027

Filename

1618899