Title :
Racetrack converter: A low power and compact data converter using racetrack spintronic devices
Author :
Qing Dong ; Kaiyuan Yang ; Fick, Laura ; Fick, David ; Blaauw, David ; Sylvester, Dennis
Author_Institution :
Univ. of Michigan, Ann Arbor, MI, USA
Abstract :
Current-induced domain wall motion in racetrack memory promises energy-efficient analog computation using compact magnetic nanowires. This paper explores the feasibility of data converters based on current-induced domain wall motion and introduces an n-bit ADC using n racetrack magnetic nanowires. With each magnetic nanowire having a different configuration granularity, an n-bit binary or gray code is generated simultaneously. The proposed ADC structure achieves 21fJ/conversion-step at 20MHz with area under 10μm2. The racetrack ADC is suitable for applications requiring dense ADC arrays, such as image sensors. This paper describes one ultra-high speed DPS imaging system benefiting from the racetrack ADC.
Keywords :
analogue-digital conversion; image sensors; magnetoelectronics; compact data converter; compact magnetic nanowire; current induced domain wall motion; energy efficient analog computation; low power converter; racetrack ADC; racetrack converter; racetrack memory; racetrack spintronic devices; ultrahigh speed DPS imaging system; CMOS integrated circuits; Magnetic domain walls; Magnetic domains; Magnetic resonance imaging; Magnetic separation; Magnetic tunneling; Nanowires; ADC; Domain Wall; Racetrack; image sensor;
Conference_Titel :
Circuits and Systems (ISCAS), 2015 IEEE International Symposium on
Conference_Location :
Lisbon
DOI :
10.1109/ISCAS.2015.7168701