[2023] A Compact Noise-Shaping SAR ADC for Smart Ultrasound Probes

• 3D ultrasound probes require transducer arrays with >1000 elements. Future ultrasound probes will be smart, i.e. will have a fully digital interface. This means that many compact low-power ADCs will need to operate in parallel to digitize the received echo signals. Small die size and high power efficiency are key requirements for such in-probe ADCs.
• This project aims to extend out previous work on in-probe digitization (see e.g. [1]) and investigate the use of noise-shaping SAR ADCs for this application.

[1] C. Chen, Z. Chen, D. Bera, E. Noothout, Z. Y. Chang, M. Tan, H. Vos, J. Bosch, M. Verweij, N. de Jong, and M. Pertijs, “A pitch-matched frontend ASIC with integrated subarray beamforming ADC for miniature 3-D ultrasound probes,” IEEE Journal of Solid-State Circuits, vol. 53, no. 11, pp. 3050-3064, Nov. 2018.

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Last modified: 2023-02-12