A wide-range logarithmic electrometer with improved accuracy and temperature stability

A wide-range logarithmic electrometer with improved accuracy and temperature stability

A seven-decade temperature-compensated logarithmic electrometer is presented. The amplifier is designed to a dynamic range of 1 pA to 10 mu A. Temperature compensation is accurately achieved by using an array of four matched monolithic bipolar transistors and straightforward postprocessing technique...

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Veröffentlicht in:IEEE transactions on instrumentation and measurement 1992-12, Vol.41 (6), p.968-973
Hauptverfasser: Ericson, M.N., Falter, K.G., Rochelle, J.M.
Format: Artikel
Sprache:eng
Schlagworte:
Applied sciences
Atmospheric measurements
Bipolar transistors
Current measurement
Dynamic range
Electronics
Exact sciences and technology
Feedback
Forward contracts
Leakage current
Operational amplifiers
Stability
Temperature distribution
Testing, measurement, noise and reliability
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Beschreibung
Zusammenfassung:A seven-decade temperature-compensated logarithmic electrometer is presented. The amplifier is designed to a dynamic range of 1 pA to 10 mu A. Temperature compensation is accurately achieved by using an array of four matched monolithic bipolar transistors and straightforward postprocessing techniques. Use of this method results in
ISSN:0018-9456
1557-9662
DOI:10.1109/19.199444