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A new topology for the realization of high-stability very low noise voltage references is presented. The topology relies on a self-biasing circuit configuration based on a low-noise operational amplifier (OA). The series connection of a number of forward-biased low-noise diodes is used as an internal reference for generating any desired output voltage. The circuit may include a temperature stabilization system for obtaining very high stability coupled to very low noise. As an example, a 5-V reference with an output power spectral density of as low as 22 nV√Hz at 100 mHz, 7 nV√Hz at 1 Hz, and less than 6 nV√Hz for frequencies larger than 10 Hz can be obtained with a temperature stability better than 15 V/°C (less than 3 ppm/°C).
Published in:
Instrumentation and Measurement, IEEE Transactions on
(Volume:59
,
Issue:
10
)
Date of Publication: Oct. 2010
- Page(s):
- 2724 - 2731
- ISSN :
- 0018-9456
- INSPEC Accession Number:
- 11523622
- Digital Object Identifier :
- 10.1109/TIM.2010.2045260
- Product Type:
- Journals & Magazines
- Date of Publication :
- 08 April 2010
- Date of Current Version :
- 13 September 2010
- Issue Date :
- Oct. 2010
- Sponsored by :
- IEEE Instrumentation and Measurement Society
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