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This paper describes the low-power design of a MOS current-mode logarithmic adder. The adder utilizes the Brent-Kung tree structure. The design strategy adopted is very simple and effective. Moreover, it can be utilized also for other types of logarithmic adders. To validate it, several adders were designed in a TSMC CMOS 130 nm technology. Results of simulations indicate that the proposed methodology...
Subthreshold region of operation has gained wide research interest for applications requiring Ultra low power consumption and medium frequency of operation. Double gate MOSFETs are proved to be better candidates for subthreshold operation due to their near ideal subthreshold slope and negligible gate capacitance. However it is not yet clear whether symmetric (SDG) or Asymmetric (ADG) DG with options...
Current mode (CM) scheme provides suitable alternative for the high speed on-chip interconnect signaling. This paper presents a energy-delay optimization methodology for the current-mode (CM) signaling scheme. Optimization for the CM circuits for on-chip interconnects requires a joint optimization of driver and receiver device sizes, as their parameters which affect the energy-delay performance depend...
This paper studies the impact of intra-die random variability on low-power digital circuit designs, specifically, circuit timing failures due to intra-die variability. We identify a new low-Vdd statistical failure mode that is strongly supply-voltage dependent and also introduce a simple yet novel method for quantifying the effects of process variability on digital timing - a delay overlapping stage...
Class D amplifiers are becoming the most feasible solution for embedded audio application. However, distortions due to the non-linear nature of switching stage are the main drawback for this amplifier topology. This paper discusses the design and implementation of high fidelity audio class D using sliding mode control scheme. This design method proves to be a cost effective solution for industrial...
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