A Reconfigurable Ultrasound Transceiver ASIC With 24 x 40 Elements for 3-D Carotid Artery Imaging
Eunchul Kang (TU Delft - Electronic Instrumentation)
Qing Ding (TU Delft - Electronic Instrumentation)
Maysam Shabanimotlagh (ImPhys/Acoustical Wavefield Imaging )
Pieter Kruizinga (Erasmus MC)
Zu Yao Chang (TU Delft - Electronic Instrumentation)
Emile Noothout (ImPhys/Acoustical Wavefield Imaging )
Hendrik J. Vos (ImPhys/Acoustical Wavefield Imaging , Erasmus MC)
Johan G. Bosch (Erasmus MC)
Martin D. Verweij (Erasmus MC, ImPhys/Acoustical Wavefield Imaging )
Nico de Jong (Erasmus MC, ImPhys/Acoustical Wavefield Imaging )
Michiel A.P. Pertijs (TU Delft - Electronic Instrumentation)
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Abstract
This paper presents an ultrasound transceiver application-specific integrated circuit (ASIC) designed for 3-D ultrasonic imaging of the carotid artery. This application calls for an array of thousands of ultrasonic transducer elements, far exceeding the number of channels of conventional imaging systems. The 3.6 x 6.8 mm² ASIC interfaces a piezo-electric transducer (PZT) array of 24 x 40 elements, directly integrated on top of the ASIC, to an imaging system using only 24 transmit and receive channels. Multiple ASICs can be tiled together to form an even bigger array. The ASIC, implemented in a 0.18 μm high-voltage (HV) BCD process, consists of a reconfigurable switch matrix and row-level receive circuits. Each element is associated with a compact bootstrapped HV transmit switch, an isolation switch for the receive circuits and programmable logic that enables a variety of imaging modes. Electrical and acoustic experiments successfully demonstrate the functionality of the ASIC. In addition, the ASIC has been successfully used in a 3-D imaging experiment.