论文信息 - A -90 dB THD rail-to-rail input opamp using a new local charge pump in CMOS

A -90 dB THD rail-to-rail input opamp using a new local charge pump in CMOS

This paper describes the principle and design of a CMOS Rail-to-Rail input operational amplifier with THD performance of -90 dB. The operation of the opamp is based on a standard two-stage Miller configuration and is capable of driving a low ohmic load (32 Ω). THD levels below -90 dB has not yet been shown with existing Rail-to-Rail techniques. The Rail-to-Rail functionality is achieved with a new area efficient on chip charge pump circuit for the generation of the supply voltage for the input differential pair.

E.C. Dijkmans | A.F. Duisters

[1] J. F. Dickson,et al. On-chip high-voltage generation in MNOS integrated circuits using an improved voltage multiplier technique , 1976 .

[2] J. N. Babanezhad. A rail-to-rail CMOS op amp , 1988 .

[3] Mohammed Ismail,et al. Robust design of rail-to-rail CMOS operational amplifiers for a low power supply voltage , 1996, IEEE J. Solid State Circuits.

[4] D. Monticelli. A quad CMOS single-supply op amp with rail-to-rail output swing , 1986 .

[5] Johan H. Huijsing,et al. Low-voltage operational amplifier with rail-to-rail input and output ranges , 1989 .

[6] Ron Hogervorst,et al. A compact power-efficient 3 V CMOS rail-to-rail input/output operational amplifier for VLSI cell libraries , 1994 .

[7] M. Berkhout,et al. A Low-Ripple Chargepump Circuit for High Voltage Applications , 1995, ESSCIRC '95: Twenty-first European Solid-State Circuits Conference.

[8] William Redman-White. A high bandwidth constant g/sub m/ and slew-rate rail-to-rail CMOS input circuit and its application to analog cells for low voltage VLSI systems , 1997 .

[9] W. Redman-White. A high bandwidth constant g/sub m/ and slew-rate rail-to-rail CMOS amplifier circuit for embedded low-voltage applications , 1996, 1996 Symposium on VLSI Circuits. Digest of Technical Papers.

[10] M.G.R. Degrauwe,et al. A rail-to-rail input/output CMOS power amplifier , 1989 .

[11] M.J.M. Pelgrom,et al. Matching properties of MOS transistors , 1989 .