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- W1537698666 abstract "This mixed-signal 0.5 /spl mu/m CMOS data-acquisition IC uses a second-order 5b /spl Sigma//spl Delta/ modulator for A/D conversion of a 500 kHz input bandwidth. Signal properties like DC, true-RMS (TRMS), peak and frequency are extracted in the digital domain. The article shows a traditional data-acquisition block diagram. Analog filtering extracts DC and RMS value, peak min/max and frequency. A high-resolution A/D converter (100 dB for 4.5 digit resolution) digitizes the resulting low-frequency signal (typically 2 Hz). If waveform display of the input signal is desired, a separate 6-8b high-speed A/D converter is required. One of the problems with such an acquisition system is the analog RMS converter, which requires bulky external filter capacitors, is slow responding (especially for low-level inputs), has limited dynamic range, and has limited bandwidth when operated at low power." @default.
- W1537698666 created "2016-06-24" @default.
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- W1537698666 date "2003-01-20" @default.
- W1537698666 modified "2023-09-26" @default.
- W1537698666 title "A 13 mW 500 kHz data acquisition IC with 4.5 digit DC and 0.02% accurate true-RMS extraction" @default.
- W1537698666 cites W2409326581 @default.
- W1537698666 doi "https://doi.org/10.1109/isscc.1999.759319" @default.
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