Title :
A temperature stable current reference source with programmable output
Author :
Thomsen, Axel ; Brooke, Martin A.
Author_Institution :
Microelectron Res. Center, Georgia Inst. of Technol., Atlanta, GA, USA
Abstract :
A current reference source is presented that achieves stability over temperature with a neural network architecture and floating gate devices. It allows postfabrication adjustment to a user-specified output value. Tuning of floating gate devices is also used to accurately cancel temperature gradients at various temperatures. The circuit allows approximation of arbitrary functions over temperature. A first implementation for a limited temperature range yielded an accuracy of about 1.5%. Simulation results of an improved version are presented
Keywords :
constant current sources; neural chips; reference circuits; stability; arbitrary functions; floating gate devices; neural network architecture; postfabrication adjustment; programmable output; temperature gradients; temperature stable current reference source; user-specified output value; Circuit optimization; Circuit stability; EPROM; Fabrication; Microelectronics; Neural networks; Power supplies; Temperature dependence; Temperature distribution; Voltage;
Conference_Titel :
Circuits and Systems, 1992., Proceedings of the 35th Midwest Symposium on
Conference_Location :
Washington, DC
Print_ISBN :
0-7803-0510-8
DOI :
10.1109/MWSCAS.1992.271195
