High-Density Magnetic Flash ADC Using Domain-Wall Motion and Pre-Charge Sense Amplifiers

Abstract

Unintentional shutdown of power in CMOS circuitry leads to loss of data. The usage of non-volatile elements along with CMOS to improve its performance in terms of power consumption, area, and delay is very attractive. Non-volatile elements act as a backup data source for CMOS circuitry. Current-induced domain-wall (DW) motion is a prominent switching mechanism promising low-power, high-density, and high-speed circuits. This paper presents a novel DW motion and pre-charge sense amplifier-based magnetic flash analog-to-digital converter (ADC), which is faster, and power and area efficient compared with other CMOS ADCs. By using a DW motion in a magnetic stripe SPICE compatible Verilog-A model and CMOS 45 nm design kit, its performance, such as power and delay, has been simulated and compared with CMOS-based ADCs.