Title :
Simplified Low-Voltage and Low-Power Bipolar OpAmp with Non-linear Class-AB Rail-to-Rail Output Stage
Author :
Bredius, Martijn ; Huijsing, Johan H.
Author_Institution :
Dept. of Electr. Eng., Delft Univ. of Technol., Delft, Netherlands
Abstract :
A simplified low-voltage and low-power bipolar OpAmp is presented using a non-linear class-AB control and rail-to-rail output stage. The circuit operates on supply voltages down to 1V. This OpAmp is intended for use as an on-chip building block and contains only 38 transistors. The OpAmp is succesfully realised in a semi-custom process with lateral PNPs. The measured OdB gain bandwidth is 580kHz. The OpAmp can deliver +1.3mA/-1.7mA maximum output current, while the quiescent current of the total circuit is only 70μA.
Keywords :
low-power electronics; operational amplifiers; bandwidth 580 kHz; current -1.7 mA; current 1.3 mA; current 70 muA; lateral PNP; low-power bipolar opamp; nonlinear class-AB control; on-chip building block; rail-to-rail output stage; semicustom process; simplified low-voltage opamp; voltage 1 V; Analog computers; Biology computing; CMOS technology; Circuits; Computer architecture; Neural network hardware; Neurons; Physics computing; Rail to rail outputs; Very large scale integration;
Conference_Titel :
Solid-State Circuits Conference, 1992. ESSCIRC '92. Eighteenth European
Conference_Location :
Copenhagen
Print_ISBN :
87-984232-0-7
DOI :
10.1109/ESSCIRC.1992.5468247
