Low-noise voltage-sensitive preamplifier with output stabilization by pole-zero cancellation in the feedback circuit
- 1 April 1977
- journal article
- research article
- Published by AIP Publishing in Review of Scientific Instruments
- Vol. 48 (4) , 383-388
- https://doi.org/10.1063/1.1135044
Abstract
Low‐noise, voltage‐sensitive preamplifiers were designed with pole‐zero cancellation in the feedback circuit to stabilize the output baseline against variations in the mean rate and amplitude of random signals. Compared to conventional feedback and subsequent pole‐zero cancellation, this method of baseline stabilization increased the fraction of signals transmitted without distortion by preamplifier saturation from 50 to ≳99% for steplike input signals of 240 mV amplitude occurring randomly at a mean rate of 104 signals/sec.Keywords
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