Title :
A JFET input single supply operational amplifier with rail-to-rail output
Author :
Close, Joann P. ; Santos, Francisco
Author_Institution :
Analog Deives, Wilmington, MA, USA
Abstract :
A JFET input single supply amplifier functioning on supplies from +3 to +36 volts and 700 μA supply current is described. The common-emitter output stage´s saturation resistance of 40 ohms to the positive supply and 20 ohms to the negative supply allow rail-to-rail output voltages even with heavy load currents. An N-channel JFET folded cascode input stage provides a robust low noise front end with an input voltage range from 0.2 volts below the negative supply to 1 volt below the positive supply
Keywords :
operational amplifiers; 20 ohm; 3 to 36 V; 40 ohm; 700 muA; JFET input; N-channel JFET; bipolar output stage; feedback collector scheme; folded cascode input stage; open loop translinear scheme; rail-to-rail output; robust low noise front end; saturation resistance; single supply operational amplifier; two-stage pole-splitting topology; Operational amplifiers;
Conference_Titel :
Bipolar/BiCOMS Circuits and Technology Meeting, 1993., Proceedings of the 1993
Conference_Location :
Minneapolis, MN
Print_ISBN :
0-7803-1316-X
DOI :
10.1109/BIPOL.1993.617487
