The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
A digital low-dropout (DLDO) voltage regulator circuit is proposed utilizing a multi-phase VCO based time quantizer. This high-resolution quantizer requires much lower sampling clock frequency compared to the previously proposed 1-bit comparator based architectures and thereby ensures stability over a wide operating condition, while reducing the dynamic power consumption at the same time. The DLDO...
This paper shows that performing an XOR operation between the outputs of parallel arbiter PUFs generates a more secure output at the expense of reduced stability. In this work, we evaluate the security and stability of XOR PUFs using 1,000,000 randomly chosen challenges, applied to 10 custom-designed PUF chips, tested for 100,000 cycles per challenge, under different voltage and temperature conditions...
To drive cathode of Magnetron Injection Gun (MIG), long pulse high voltage power supply (HVPS) is needed. HVPS have to be few seconds continuously −40 kV, 280 kW with rise and fall time less then 1 ms, and Included ripple stability of HV output is less than 1%. In order to develop HVPS, eight HVPSs are parallel operated by each power supply phase shifted PI control. HV pulse generation is performed...
Scalability of interface driven perpendicular magnetic anisotropy (i-PMA) magnetic tunnel junctions (MTJs) has been improved down to 1X node which verifies STT-MRAM for future standalone memory. With developing a novel damage-less MTJ patterning process, robust magnetic and electrical performances of i-PMA MTJ cell down to 15 nm node could be achieved.
STT-MRAMs are prone to data corruption due to inadvertent bit flips. Traditional methods enhance robustness at the cost of area/energy by using larger cell sizes to improve the thermal stability of the MTJ cells. This paper employs multibit error correction with DRAM-style refreshing to mitigate errors and provides a methodology for determining the optimal level of correction. A detailed analysis...
This paper explores the scalability of in-plane and perpendicular MTJ based STT-MRAMs from 65 nm to 8 nm while taking into consideration realistic variability effects. We focus on the read and write performances of a STT-MRAM based cache rather than the obvious advantages such as the denser bit-cell and zero static power. An accurate MTJ macromodel capturing key MTJ properties was adopted for efficient...
We investigate the sub-20nm level scalability of STT-MRAM cells possessing perpendicular magnetization induced from the interface of free layer (FL) and MgO tunnel barrier. We demonstrate that the MTJs utilizing dual interfaces of FL and MgO exhibit enhanced scalability with high thermal stability and low switching current, compared with the MTJs with a single interface. As thermal stability factor...
28nm MTJ for 8∼16Gb MRAM device has been successfully integrated with special patterning & etch technique. Resistance (R) separation between high and low R states was 15.2σ, comparable to that for 80nm MTJ cells. Thermal stability factor (Δ) followed prediction fairly well, and MTJ with free layer (FL) of 25Å and aspect ratio (AR) of 3 showed Δ of 56. In order to realize sub-30nm MRAM device,...
In this paper, we deal with a problem to capture a target by linear multi-agent systems where the agents behave autonomously, whereas the target escapes with a reasonable strategy. We give necessary and sufficient conditions or sufficient conditions for the success of the capturing for several cases. The conditions clarify the performance competition between the target and the agents and we propose...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.