August 2005
Intermediate to advanced
608 pages
18h 12m
English
Content preview from Current Sources and Voltage References
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Characteristics of enhancement-mode MOSFETs
Creating Current Sources with Power MOSFETs
209
leakage current doubles for every 10˚C rise in temperature, which in some applica-
tions may be important.
Another
major difference
between depletion-mode devices and enhancement-mode
devices is the characteristic I
DSS
. With depletion-mode devices, I
DSS
refers to the
maximum current that will flow (full conduction) between drain and source, when the
gate is shorted to the source. With the enhancement-mode device, it means some-
thing totally different; in fact, it is referring to a small
leakage
current. Remember that
the two types function in reverse ...
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