Imec Vzw

Katholieke Universiteit Leuven

Stichting Imec Nederland

Katholieke Universiteit Leuven, K.u. Leuven Research & Development

Qiuyang Lin

Nick Van Helleputte

Roland Van Wegberg

Shuang Song

Filip Tavernier

Jiawei Xu

An analog-to-digital converter, ADC, circuitry, comprises: an integrator connected to a capacitor, the integrator being configured to switch between integrating an analog input signal for ramping an integrator output and integrating a reference input signal for returning integrator output towards a threshold; a comparator for comparing integrator output to the threshold; and a timer for determining a time duration during which the reference input signal is integrated, the time duration providing a digital representation of an analog input signal value; the ADC circuitry further comprising a feedforward noise shaping loop configured to store a quantization error signal based on digitizing a first sample, the comparator being configured to receive a feedforward noise shaping signal for changing the threshold for digitizing a later sample of the analog input signal following the first sample.

Analog-to-digital converter circuitry, an integrated circuit device, a photoplethysmogram detector, a wearable device and a method for analog-to-digital conversion

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Leuven, Belgium

Qiuyang Lin