On the gm-Boosted Miller-Effect Minimized Inverter-Cascode Transimpedance Amplifier for Sensor Applications
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Date
2021-10-20
Open Access Location
Journal Title
Journal ISSN
Volume Title
Publisher
IEEE
Rights
CC BY 4.0
Abstract
This paper presents the small-signal operation of a gm-boosted inverter-cascode transimpedance amplifier which has not been reported previously and whose comprehensive analysis is not available in any reported article or text-book. A simplified sequential equivalent-circuit method is employed which eliminates the need for complicated circuit analysis techniques. The analysis shows that the gain and the gain-bandwidth of the gm-boosted inverter-cascode transimpedance-amplifier is enhanced by the gain of the gm-boosting amplifier. This is due to the increased output impedance of the TIA, and, the reduced input-referred miller-effect capacitance through miller-effect trade-off employing the gm-boosting loop. To verify the actual performance improvement achieved, circuit simulation results as well as measured experimental results are also provided.
Description
Keywords
Analog CMOS circuits, gm-boosting, inverter-cascode transimpedance amplifier, small-signal analysis, simplified inspection-based analysis technique
Citation
Zhang Y, Hasan SMR. (2021). On the g<inf>m</inf>-Boosted Miller-Effect Minimized Inverter-Cascode Transimpedance Amplifier for Sensor Applications. IEEE Access. 9. (pp. 140525-140537).