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- W3196249432 abstract "Digital Storage Oscilloscopes (DSOs) conjugate high performance with large number of features and flexibility. The basic structure, based on fast Analog to Digital Converter (ADC) and memory, is augmented with several components for channel matching and bandwidth improvement, and processors that provide visualization, frequency processing, jitter and stability measurement, etc. Unfortunately, fine resolution in sample rate selection is not available, such that for several applications the user must run complex measurement procedures that require data download and offline processing. The paper proposes a dedicated digital circuit that offers fine control of the time-base by real time downsampling the input stream at an almost arbitrary sampling rate. The proposed circuit implements a series of operations involving real-time data filtering, defragmentation and packing, which are not considered by alternative approaches, like those based on polyphase filters, that offer very limited choices for the sampling rate. The circuit is designed to work in conjunction with the highest performance DSOs that use a multichannel architecture. Design rules for circuit design are provided together with implementation results in 14nm FinFET technology. When designed for an architecture with 64 channels with 8bit input samples the circuit works in real time with a sampling rate of 220 GSps running at 3.42 GHz, with a silicon footprint of 0.17 mm <sup xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>2</sup> and a power dissipation of 0.85W." @default.
- W3196249432 created "2021-08-30" @default.
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- W3196249432 date "2021-10-01" @default.
- W3196249432 modified "2023-09-25" @default.
- W3196249432 title "Real-Time Downsampling in Digital Storage Oscilloscopes With Multichannel Architectures" @default.
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- W3196249432 doi "https://doi.org/10.1109/tcsi.2021.3102386" @default.
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