# Low noise constant current source for bias dependent noise measurements

Source: [Low noise constant current source for bias dependent noise measurements](<https://www.sota2.com/research/paper/68fa2f911e209131ce86d3c1>)

Collection index: [llms.txt](<https://www.sota2.com/research/llms.txt>)

Data updated: 2025-10-24T17:38:07.060Z

Authors: D. Talukdar, R. K. Chakraborty, Suvendu Bose, K. K. Bardhan

Published: 2010-12-29T09:52:03.000Z

## Abstract

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.

## Recorded benchmark results

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## Original sources and implementation

[Original paper](<https://arxiv.org/abs/1012.5898>)

[PDF](<https://arxiv.org/pdf/1012.5898.pdf>)