Low noise constant current source for bias dependent noise measurements

Autor:	Talukdar, D., Chakraborty, R. K., Bose, Suvendu, Bardhan, K. K.
Rok vydání:	2010
Předmět:	Condensed Matter - Disordered Systems and Neural Networks Physics - Instrumentation and Detectors
Zdroj:	Rev. Sci. Instrum. 82, 013906 (2011)
Druh dokumentu:	Working Paper
DOI:	10.1063/1.3509385
Popis:	A low noise constant current source used for measuring the $1/f$ noise in disordered systems in ohmic as well as non-ohmic regime is described. The source can supply low noise constant current starting from as low as 1 $\mu$A to a few tens of mA with a high voltage compliance limit of around 20 Volts. The constant current source has several stages which can work in a standalone manner or together to supply the desired value of load current. The noise contributed by the current source is very low in the entire current range. The fabrication of a low noise voltage preamplifier modified for bias dependent noise measurements and based on the existing design available in the MAT04 data sheet is also described. Comment: 7 pages, 7 figures, to be published in Review of Scientific Instruments
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1012.5898 Zobrazit plný text záznamu View this record from Arxiv