Analysis, simulation and circuit implementation of a precise high-output impedance analog current mirror

The decision for most the appropriate current mirror topology when designing a circuit is a matter of trade-offs between impedance, current transfer ratio, area on chip, power consumption and voltage-headroom, expandability etc. Current mirrors are mainly used for biasing, for transferring current f...

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Bibliographic Details
Main Authors: Charalampidis, N, Spasos, M, Tsiakmakis, K, Hayatleh, K
Format: Conference Proceeding
Language:English
Subjects:
Analytical models
Appropriate technology
Circuit analysis
Circuit simulation
Circuit topology
current mirror
Educational technology
Impedance
Mirrors
output impedance
transfer ratio
Transistors
Voltage
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Summary:The decision for most the appropriate current mirror topology when designing a circuit is a matter of trade-offs between impedance, current transfer ratio, area on chip, power consumption and voltage-headroom, expandability etc. Current mirrors are mainly used for biasing, for transferring current from one part of the circuit to another or as load for amplifier stages. This paper presents the theoretical analysis, the simulation and the circuit built of a current mirror with excellent performance characteristics compared to conventional designs at the expense of voltage-headroom. Great emphasis in the analysis of the circuit has been paid on the current transfer ratio and the output impedance of the configuration.
ISSN:2158-8473
2158-8481
DOI:10.1109/MELCON.2010.5475980