Signal distortion from high-K ceramic capacitors

July 15, 2013 // By John Caldwell, Analog Applications Engineer, Texas Instruments
Multilayer ceramic capacitors (MLCCs) are used extensively in modern electronics because they offer high volumetric efficiencies and low equivalent series resistances at attractive prices. Unfortunately, these advantages come with a downside: high-K MLCCs exhibit a substantial voltage coefficient, meaning their capacitance varies depending on the applied voltage. In AC applications this phenomenon manifests itself as waveform distortion and can compromise the overall system performance.
MLCCS, analogue design, signal distortion, Texas Instruments