inverter-based amplifiers

A 33fJ/Step SAR capacitance-to-digital converter using a chain of inverter-based amplifiers

1 min read · Wed, Apr 26 2017

Circuits inverter-based amplifiers

Hesham Omran, et al., "A 33fJ/Step SAR capacitance-to-digital converter using a chain of inverter-based amplifiers". IEEE Transactions on Circuits and Systems I: Regular Papers, 64(2), 2017, 310. Abstract: A 12 - bit energy-efficient capacitive sensor interface circuit that fully relies on capacitance-domain successive approximation (SAR) technique is presented. Analysis shows that for SAR capacitance-to-digital converter (CDC) comparator offset voltage will result in parasitic-dependent conversion errors, which necessitates using an offset cancellation technique. Based on the presented