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Current Sources and Voltage References
book

Current Sources and Voltage References

by Linden T. Harrison
August 2005
Intermediate to advanced
608 pages
18h 12m
English
Newnes
Content preview from Current Sources and Voltage References
Applying the Intersil/Xicor FGA™ X60008
A Review of Some Outstanding Monolithic Voltage References and Their Applications
499
The circuit also provides a reasonably low noise voltage, most of which is created by
the noise from the voltage reference and the resistor. JFETs are inherently low-noise
devices, so their noise will be significantly lower than the other components used in
these two circuits. In fact, some of the JFETs listed in Figure 15.35 have noise levels
of less than 5nV/Hz! The initial accuracy (aka tolerance) of either current source is
directly dependent on the voltage reference, which in circuit A is approximately
±0.122% (±5 mV), whereas ...
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Publisher Resources

ISBN: 9780750677523