Title :
A high precision micropower operational amplifier
Author :
Fukahori, Kiyoshi ; Nishikawa, Yukio ; Hamade, A.R.
Abstract :
An operational amplifier configuration implemented as a true micropower high precision op amp is described. It includes a well controlled and predictable DC biasing network that is insensitive to variations in temperature, supply voltages, and process. Also, it permits single supply operation. Excellent DC precision characteristics, comparable to or better than the very best precision op amps currently available, are realized yet at micropower levels. By simply increasing the biasing currents, a version of this design operates in general purpose applications without any degradation in its high precision characteristics. Thus, the AC performance levels of general purpose op amps are attained at a fraction of supply current. This device is fabricated using a standard bipolar IC process; an ion-implanted JFET is added to simplify biasing.
Keywords :
Bipolar integrated circuits; Linear integrated circuits; Operational amplifiers; bipolar integrated circuits; linear integrated circuits; operational amplifiers; Charge coupled devices; Charge-coupled image sensors; Chirp; Correlators; Current supplies; Operational amplifiers; Radar signal processing; Signal processing; Solid state circuits; Surface acoustic waves;
Journal_Title :
Solid-State Circuits, IEEE Journal of
DOI :
10.1109/JSSC.1979.1051314
