Paper Info
Title
A 12.1mW, 60dB SNR, 8-channel beamforming embedded SAR ADC for ultrasound imaging systems
Abstract
A power-efficient analog beamforming embedded SAR ADC for ultrasound imaging systems is presented. It is constructed from multiple sub-beamforming SAR ADCs, which sequentially perform analog beamforming and analog-to-digital conversion for an assigned focal point on a scan-line. Power is saved because these operations are carried out in the charge domain without a summing op-amp. This is realized by a capacitor beamforming digital-to-analog converter, which acts as both an analog memory cell and a digital-to-analog converter. The proposed analog beamformer was implemented in a 0.18pm CMOS process, and its power consumption is 12.1mW. The delay resolution is 4.17ns and the maximum achievable delay is 292ns. The sampling frequency is 20MS/s and the SNR of the prototype is 60dB. The circuit occupies an active area of 2.2mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> .
Year
DOI
Venue
2017
10.1109/ASSCC.2017.8240236
2017 IEEE Asian Solid-State Circuits Conference (A-SSCC)
Keywords
Field
DocType
Analog beamformer,Hybrid beamformer,Beamforming SAR ADC,ultrasound imaging systems
Flight dynamics (spacecraft),Beamforming,Focal point,Capacitor,Computer science,Sampling (signal processing),Signal-to-noise ratio,Communication channel,Electronic engineering,Successive approximation ADC
Conference
ISBN
Citations 
PageRank 
978-1-5386-3179-9
0
0.34
References 
Authors
3
2
Name
Order
Citations
PageRank
Tae Hoon Kim112911.20
Suhwan Kim249474.23