TY - GEN
T1 - A 16-Channel High-Voltage ASIC with Programmable Delay Lines for Image-Guided Ultrasound Neuromodulation
AU - Javid, Ardavan
AU - Zhao, Chenyuan
AU - Kiani, Mehdi
N1 - Publisher Copyright:
© 2022 IEEE.
PY - 2022
Y1 - 2022
N2 - 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.
AB - 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.
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U2 - 10.1109/BioCAS54905.2022.9948689
DO - 10.1109/BioCAS54905.2022.9948689
M3 - Conference contribution
AN - SCOPUS:85142923223
T3 - BioCAS 2022 - IEEE Biomedical Circuits and Systems Conference: Intelligent Biomedical Systems for a Better Future, Proceedings
SP - 419
EP - 423
BT - BioCAS 2022 - IEEE Biomedical Circuits and Systems Conference
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2022 IEEE Biomedical Circuits and Systems Conference, BioCAS 2022
Y2 - 13 October 2022 through 15 October 2022
ER -