This article presents a novel peak detect and hold (PDH) circuit for the measurement of the peak voltage of electromagnetic-field probes. These probes are used to capture the fields generated by electrostatic discharge (ESD) events in nongrounded portable devices. Therefore, a circuit combining small size, low power consumption, and nanosecond operation is needed. A topology using a discrete bipolar transistor structure with operational transconductance amplifier (OTA) and common-base storage capacitor charge control optimally meets the requirements. The circuit performance is demonstrated for different bias point settings. The error between the captured value and the actual pulse peak value is shown as a function of rise time, pulse length, amplitude, and bias settings. A comparison with the literature shows unmatched performance with respect to speed and power consumption. Using the bias settings, the PDH circuit can be adjusted to the sensor's frequency response to minimize power consumption in a multichannel system containing sensors of different bandwidths.
G. Fellner et al., "Nanosecond Peak Detect And Hold Circuit With Adjustable Dynamic Range," IEEE Transactions on Instrumentation and Measurement, vol. 72, article no. 2005608, Institute of Electrical and Electronics Engineers, Jan 2023.
The definitive version is available at https://doi.org/10.1109/TIM.2023.3289555
Electrical and Computer Engineering
Keywords and Phrases
Amplitude estimation; analog circuits; bipolar transistor circuits; electromagnetic compatibility (EMC); electromagnetic fields; pulse measurements; signal detection
International Standard Serial Number (ISSN)
Article - Journal
© 2023 Institute of Electrical and Electronics Engineers, All rights reserved.
01 Jan 2023