- document
-
Pimenta, Matheus (author), Gürleyük, C. (author), Walsh, Paul (author), O’Keeffe, Daniel (author), Babaie, M. (author), Makinwa, K.A.A. (author)This paper describes a low-power eddy current displacement sensor intended for safety-critical touch applications. A sensing inductor is incorporated into a digital PLL to efficiently digitize the displacement of a flexible metal foil. At a stand-off distance of 500μm, the sensor achieves 6.7nm resolution in a 3kHz bandwidth over a 43μm range...conference paper 2020
- document
-
Hussaini, Said (author), Jiang, H. (author), Walsh, Paul (author), MacSweeney, Dermot (author), Makinwa, K.A.A. (author)This paper presents a readout IC that uses an asynchronous charge-redistribution-based capacitance-to-digital-converter (CDC) to digitize the capacitance of a touch sensor. Thanks to the power efficient tracking algorithm, the CDC consumes negligible power consumption in the absence of touch events. To facilitate stand-alone or wake-on-touch...conference paper 2018