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LM3999

Part Number	LM3999
Manufacturer	National Semiconductor
Description	Precision Reference
Published	Mar 22, 2005
Detailed Description	LM199/LM299/LM399/LM3999 Precision Reference May 1999 LM199/LM299/LM399/LM3999 Precision Reference General Description...
Datasheet	LM3999 PDF File

Overview

LM199/LM299/LM399/LM3999 Precision Reference May 1999 LM199/LM299/LM399/LM3999 Precision Reference General Description The LM199 series are precision, temperature-stabilized monolithic zeners offering temperature coefficients a factor of ten better than high quality reference zeners.
Constructed on a single monolithic chip is a temperature stabilizer circuit and an active reference zener.
The active circuitry reduces the dynamic impedance of the zener to about 0.
5Ω and allows the zener to operate over 0.
5 mA to 10 mA current range with essentially no change in voltage or temperature coefficient.
Further, a new subsurface zener structure gives low noise and excellent long term stability com...

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