Multi-bit IDAC input Class D Amplifier
M. Zhang (TU Delft - Electrical Engineering, Mathematics and Computer Science)
Q. Fan – Mentor (TU Delft - Electronic Components, Technology and Materials)
Tiago L. Costa – Graduation committee member (TU Delft - Bio-Electronics)
Marco Berkhout – Graduation committee member (Goodix Technology)
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Abstract
Class D amplifiers (CDA) have been used considerably in audio applications due to their high-efficiency behavior. Compared to standalone analog input CDAs, digital input CDAs are less sensitive to electromagnetic interference (EMI), which is preferred in automotive applications. For digital input CDAs, multi-bit current-steering DACs using tri-level units offer high dynamic range (DR) compared with other types of DAC. The main challenge in designing low total harmonic distortion plus noise (THD+N) and high DR IDAC lies in noise, mismatch, and ISI reduction. In this project, a new ISI resilient dynamic element matching technique is developed for mismatch shaping and ISI reduction in IDAC.
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File under embargo until 12-12-2025