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JSSC 2010第11期Memory40nmSRAM

A Low-Supply-V oltage-Operation SRAM With HCI Trimmed Sense Amplifiers Atsushi Ka

提出一种利用热载流子注入技术调整感测放大器偏移电压的低电压SRAM方案,提升读取速度和稳定性。
40nm CMOS, 0.6V电源电压, 偏移电压降低76mV, 读取频率提升40%, 故障率降低6倍
低电压设计感测放大器热载流子注入偏移电压修调SRAM稳定性
利用热载流子注入(HCI)技术进行感测放大器偏移电压修调
重复修调提升效果
低电压操作下显著提升读取速度和单元稳定性
Abstract
amu Hirabayashi, Keiichi Kushida, Y uki Fujimura, and Tomoaki Y abe, Member , IEEE Abstract—This paper proposes a new scheme utilizing a small offset-voltage (V os) sense amplifier (SA) to reduce the deteriora- tion of the read speed and cell stability at low power supply. This concept has been introduced to realize a low-voltage-operation SRAM with a small area penalty. The transistor threshold voltage (Vth) shift caused by hot carrier injection (HCI) [1] is used for V os trimming after chip fab