【摘要】 为满足无线传感节点对极低功耗的要求,提出了一种基于商用标准单元库的极低电压电路设计方法.采用一种量化评价稳定性的标准,对SMIC 130nm RVT标准单元库进行评价,得到其能够接受的最低工作电压是0.5V.面向新的电压范围,重新进行库的特征化,并进行FIR滤波器设计.后仿真结果显示,FIR电路能够在1.2~0.5V电压范围内正常工作.随电源电压的降低,功耗降低了7倍,进一步增强了低电压技术对电路功耗的优化作用.更多还原

【Abstract】 Based on a foundary standard cell library,an ultra-low voltage design technique is proposed for meeting the ultra-low power requirements of wireless sensor nodes.The criterion is applied to evaluate the stability of the SMIC 130 nm RVT library,and it turns out that the library can work functionally when the supply voltage is higher than 0.5V.Through re-characterizing the library at the low voltage,we design a low voltage FIR circuit.The postlayout simulation shows that the FIR can work well through the voltage range of 1.2Vto 0.5V,and the power consumption can decrease 7Xwhen the voltage drops from 1.2Vto 0.5V.更多还原