A 16-Channel High-Voltage ASIC with Programmable Delay Lines for Image-Guided Ultrasound Neuromodulation

Ardavan Javid, Chenyuan Zhao, Mehdi Kiani

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

Conventional ultrasound neuromodulation (USN) systems utilize bulky electronics to drive a single-element ultrasonic (US) transducer. To achieve large-scale USN within a given tissue volume, a US transducer array should electronically be driven in a beamforming fashion to steer focused US beams towards different neural targets. This paper presents a 16-channel high-voltage ASIC (with 4-channel US imaging frontend) for driving a 16-element piezoelectric transducer array suitable for image-guided USN applications. The ASIC integrates programmable delay lines for 16 channels, controlled by an external interface with only three wires, to provide beam focusing and steering capability. The ASIC also integrates 8-channel neural recording frontend and an inductive power management circuity. The ASIC was designed and fabricated in a 0.25 μm HV BCD CMOS process with an area of 8.7×6.6 mm2. In measurements, the performance of the high-voltage drivers with programmable delay lines in generating 50 V peak-peak pulses at 2 MHz with the total delay range of 32.05 μs and fine tuning has been demonstrated.

Original languageEnglish (US)
Title of host publicationBioCAS 2022 - IEEE Biomedical Circuits and Systems Conference
Subtitle of host publicationIntelligent Biomedical Systems for a Better Future, Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages419-423
Number of pages5
ISBN (Electronic)9781665469173
DOIs
StatePublished - 2022
Event2022 IEEE Biomedical Circuits and Systems Conference, BioCAS 2022 - Taipei, Taiwan, Province of China
Duration: Oct 13 2022Oct 15 2022

Publication series

NameBioCAS 2022 - IEEE Biomedical Circuits and Systems Conference: Intelligent Biomedical Systems for a Better Future, Proceedings

Conference

Conference2022 IEEE Biomedical Circuits and Systems Conference, BioCAS 2022
Country/TerritoryTaiwan, Province of China
CityTaipei
Period10/13/2210/15/22

All Science Journal Classification (ASJC) codes

  • Artificial Intelligence
  • Signal Processing
  • Biomedical Engineering
  • Electrical and Electronic Engineering
  • Neuroscience (miscellaneous)
  • Instrumentation

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