适用于低电源电压的快速预充Flash灵敏放大器

Fast Pre-charge Sense Amplifier for Low-Voltage Flash Memory

提出一种新型快速预充Flash灵敏放大器,能够实现在低电源电压下的快速工作。采用反相器反馈控制的预充电路模块,使得预充速度得以提升。还提出新型快速预充Flash灵敏放大器的改进型,进一步使用反相器构成参考电压发生电路,取消电流源模块,从而降低功耗。新型电路在速度和功耗上有较大改善,65 nm CMOS工艺条件下仿真结果表明,相比传统结构,新结构预充速度提高15%,功耗降低14%。

A new flash sense amplifier （SA） is presented, which has a fast pre-charge speed, low power and low supply voltage. Compared to the conventional low-voltage SA, the novel amplifier uses two inverters to improve pre-charge speed by feedback-control pre-charge circuit and to reduce power consumption by taking place of the current source module in reference voltage generation circuit, respectively. In 65 nm CMOS process, the pre- charge time of novel circuit is improved above 15%, and the power dissipation is lowered about 14%.