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Transconductance amplifier for optical metrology applications of light-emitting diodes
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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en
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7
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IEEE Transactions on Instrumentation and Measurement, Volume 69, issue 6, pp. 3704-3710
Abstract
Light-emitting diodes (LEDs) have many applications in optical metrology. Depending on the measurement scheme, an LED might be driven, for example, using constant current, amplitude or pulsewidth modulated current, or current pulses. We present the design and characterization of a transconductance amplifier (TCA) optimized to drive LEDs in optical metrology applications. The device is capable of delivering peak and root mean square (rms) currents up to 10 and 1 A, respectively, and has a selectable transconductance ranging from 100 mu text{S} to 10 S. The typical cutoff frequency for the current output is around 10 MHz for various types of LEDs.
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Dönsberg, T, Poikonen, T & Ikonen, E 2020, 'Transconductance amplifier for optical metrology applications of light-emitting diodes', IEEE Transactions on Instrumentation and Measurement, vol. 69, no. 6, 8804230, pp. 3704-3710. https://doi.org/10.1109/TIM.2019.2935596