Noise Analysis of Switched-Current Circuits

Ivan Harald Holger Jørgensen, Gudmundur Bogason

    Research output: Contribution to journalJournal articleResearchpeer-review


    The understanding of noise in analog sampled data systems is vital for the design of high resolution circuitry in the discrete time domain. In this paper a general description of sampled and held noise is presened. The noise calculations are verified by measurements on an analog delay line implemented using switched-current (SI) technique. The SI delay line is based on a new topology current copier (CCOP). For the verification of the theory a new measurement technique is used. This technique enables one to measure the power spectral density of sampled and held noise which is below the continuous time noise floor.
    Original languageEnglish
    JournalAnalog Integrated Circuits and Signal Processing
    Issue number1
    Pages (from-to)69-77
    Publication statusPublished - 1999


    • Switched current
    • Noise
    • Measurement technique
    • Sigma-delta modulator
    • Current mode


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