论文信息 - A 130nm CMOS Programmable Operational Amplifier

A 130nm CMOS Programmable Operational Amplifier

In this work we present a programmable 1.2 V operational amplifier (OpAmp) realized in a standard 130 nm CMOS technology. The OpAmp is based on a 3 V rail-to-rail input/output topology. The experimental results show the feasibility of using higher voltage topologies in conjunction with multi-threshold (multi-Vth) process options for low voltage designs. The programming range extends from a low-noise to a low-power mode. In addition, a constant-gm stage has been added to the rail-to-rail input. In low-noise mode the OpAmp has a low input thermal noise voltage of 5.1 nV/¿Hz and in low-power mode a power consumption of only 203 ¿W. Over the whole programming range the OpAmp maintains unity-gain stability with its phase margin varying between 58° and 62°.

D. Schroeder | J.M. Tomasik | W. Galjan | W.H. Krautschneider | K.M. Hafkemeyer

[1] Dietmar Schroeder,et al. Systematic design of programmable operational amplifiers with noise-power trade-off , 2007, IET Circuits Devices Syst..

[2] W. Sansen. Challenges in analog IC design submicron CMOS technologies , 1996, 1996 IEEE-CAS Region 8 Workshop on Analog and Mixed IC Design. Proceedings.

[3] D. Schroeder,et al. A CMOS Operational Amplifier with Constant 68° phase margin over its whole range of noise-power trade-off programmability , 2007, ESSCIRC 2007 - 33rd European Solid-State Circuits Conference.

[4] M. Vertregt,et al. The analog challenge of nanometer CMOS , 2006, 2006 International Electron Devices Meeting.

[5] Robert Puers,et al. A flexible system-on-chip (SoC) for biomedical signal acquisition and processing , 2006 .

[6] P. Asbeck,et al. A 0.8V, 7/spl mu/A, rail-to-rail input/output, constant G/sub m/ operational amplifier in standard digital 0.18/spl mu/m CMOS , 2005, 2005 NORCHIP.

[7] R. Hogervorst. Design of low-voltage low-power CMOS operational amplifier cells , 1996 .

[8] P.R. Kinget. Designing analog and RF circuits for ultra-low supply voltages , 2007, ESSCIRC 2007 - 33rd European Solid-State Circuits Conference.