A static current-source control technique in a multiple-valued current-mode (MVCM) circuit is proposed for a low-energy pipelined system. A current-control block embedded in each pipeline stage generates current control signals, which minimizes the amount of current flows depending on a given condition. The use of this current-source control technique makes it possible to reduce the power dissipation with maintaining the operating frequency. The efficiency of the proposed technique in a pipelined MVCM multiplier is confirmed by using HSPICE simulation under 0.13um CMOS technology. The MVCM circuit using the proposed technique achieves 65.1% power reduction compared with a conventional MVCM implementation at the operating frequency of 100MHz and 26.5% reduction at 500MHz with 6.88% area overhead.
['Masanori Natsui', 'Takashi Arimitsu', 'Takahiro Hanyu']
Low-Energy Pipelined Multiple-Valued Current-Mode Circuit with 8-Level Static Current-Source Control