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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
266
Current source applications for the LM134
tions, is naturally affected at very low currents. National states that at an I
set
level of 1
mA, the slew rate is 1 V/µS, but at 10 µA this drops to around 10 mV/µS.
10.2 Current source
applications for the LM134
Figures 10.4 to 10.11 and also 10.18
show several diverse current source applications
for the LM134. In Figure 10.4, the LM134/334 is used to set the bias current for a
micropower, programmable op amp, such as National’s LM4250. Programmable op
amps such as this are useful in many low-power applications. With the LM4250, a sin-
gle bias-setting resistor programs the quiescent power consumption. ...
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Publisher Resources

ISBN: 9780750677523