Title :
Mosfet Current-to-Frequency Converter with a Linear Sub Picoampere-to-Microampere Range
Author :
Shapiro, Edward G.
Author_Institution :
Lawrence Radiation Laboratory, University of California Livermore, California
Abstract :
A current-to-frequency converter with a single linear current range of 10-13 to 106 amperes has been developed for monitoring ion chamber currents. The converter has an output transfer function of 10-11 amperes/ Hz or 10-11 coulombs/count which is temperature compensated. Its frequency output, which is compatible with most scalers, yields a maximum linear rate of 105 Hz at 10-6 amperes input current.
Keywords :
Capacitors; Current measurement; Gate leakage; Leakage current; MOSFET circuits; Pulse amplifiers; Pulse generation; Stability; Temperature; Voltage;
Journal_Title :
Nuclear Science, IEEE Transactions on
DOI :
10.1109/TNS.1971.4325856
