Title :
Precise synchronous detectors with improved dynamic reserve
Author_Institution :
Tallinn Tech. Univ., Estonia
fDate :
10/1/2000 12:00:00 AM
Abstract :
The current paper describes a special class of synchronous (phase-sensitive) detectors (SDs) for measurement purposes. They are precise and have high dynamic range. Proposed solutions are based on op-amps, having synchronously switched capacitors in the negative feedback path. Such structures give significant improvement of several specifications, especially of the input dynamic reserve. Functioning principles, circuit diagrams and gain equations are given
Keywords :
circuit feedback; network analysis; network synthesis; operational amplifiers; phase detectors; AC measurement; circuit diagrams; dynamic range; dynamic reserve; gain equations; input dynamic reserve; negative feedback path; phase-sensitive detectors; synchronous detectors; synchronously switched capacitors; Capacitors; Circuits; Current measurement; Detectors; Dynamic range; Equations; Negative feedback; Operational amplifiers; Phase detection; Phase measurement;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
