Title :
A traceable precision current source for currents between 100 aA and 10 pA
Author :
Willenberg, Gerd-Dietmar ; Tauscher, H. Norbert ; Warnecke, Peter
Author_Institution :
Phys. Tech. Bundesanstalt, Braunschweig, Germany
fDate :
4/1/2003 12:00:00 AM
Abstract :
A new calibration setup for picoamperemeters is presented. Owing to the use of a novel voltage ramp generator with increased linearity, the useful measuring time is increased to about 35 min, which reduces the calibration uncertainty of picomaperemeters with long time constants.
Keywords :
ammeters; calibration; constant current sources; ramp generators; 100 aA to 10 pA; 35 min; calibration setup; calibration uncertainty; linearity; measuring time; picoamperemeters; time constants; traceable precision current source; voltage ramp generator; Absorption; Calibration; Capacitance; Capacitors; Circuits; Current measurement; Dielectrics; Stability; Time measurement; Voltage;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
DOI :
10.1109/TIM.2003.810051
