An investigation of log domain current feedback amplifiers

An investigation of log domain current feedback amplifiers

In this paper the idea of using a log domain integrator within a current feedback op amp is investigated. The log domain current feedback amplifier is then studied in order to gain better understanding of the way it works focusing on stability issues. A comparison with the classical CFA is performed...

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Bibliographische Detailangaben
Hauptverfasser: Despotopoulos, S., Drakakis, E., Toumazou, C.
Format: Tagungsbericht
Sprache:eng
Schlagworte:
Educational institutions
Feedback amplifiers
Feedback circuits
Frequency
Impedance
Mirrors
Operational amplifiers
Output feedback
Parasitic capacitance
Voltage
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Beschreibung
Zusammenfassung:In this paper the idea of using a log domain integrator within a current feedback op amp is investigated. The log domain current feedback amplifier is then studied in order to gain better understanding of the way it works focusing on stability issues. A comparison with the classical CFA is performed in terms of resistive and capacitive feedback proving that the circuit can work with capacitive feedback under certain conditions.
DOI:10.1109/ICECS.1998.814907