Title :
Design ofa low-voltage rail-to-rail input and output operational amplifier with nested Miller compensation
Author :
Chew, L.H. ; Xu, Y.P.
Author_Institution :
Dept. of Electr. & Comput. Eng., Nat. Univ. of Singapore, Singapore
Abstract :
A rail-to-rail constant gm input and class-AB output operational amplifier in a 0.8-μm double-poly, double-metal, n-well technology operating at a low supply voltage of 3.3 V is presented. A technique that uses nested Miller compensation yields 130 dB DC gain and 3.5 MHz unity gain frequency at a 10 kΩ and 10 pF load. The class-AB output provides efficient quiescent current control and delivers output current to 1 kΩ resistive load with low total harmonic distortion less than 0.1%. The die area of the operational amplifier is 0.15 mm2
Keywords :
CMOS analogue integrated circuits; compensation; harmonic distortion; integrated circuit design; operational amplifiers; 0.8 micron; 130 dB; 3.3 V; 3.5 MHz; LV operational amplifier; class-AB output; double-poly double-metal n-well technology; low THD; low-voltage op amp; nested Miller compensation; quiescent current control; rail-to-rail input/output opamp; total harmonic distortion; Current control; Frequency; Gain; Low voltage; Operational amplifiers; Rail to rail amplifiers; Rail to rail inputs; Rail to rail operation; Rail to rail outputs; Total harmonic distortion;
Conference_Titel :
Circuits and Systems, 2000. IEEE APCCAS 2000. The 2000 IEEE Asia-Pacific Conference on
Conference_Location :
Tianjin
Print_ISBN :
0-7803-6253-5
DOI :
10.1109/APCCAS.2000.913436
