A Low-Voltage Sense Amplifier Based on Resistor Mirror

GUO Jia-rong; RAN Feng; XU Mei-hua

doi:10.3969/j.issn.0372-2112.2014.05.032

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A Low-Voltage Sense Amplifier Based on Resistor Mirror

更新时间：2025-07-16

- A Low-Voltage Sense Amplifier Based on Resistor Mirror
- Acta Electronica Sinica Vol. 42, Issue 5, Pages: 1030-1034(2014)
- 作者机构：
  
  上海大学机电工程与自动化学院,上海,200072
- 作者简介：
- 基金信息：
  
  Municipality Commission of Economy and Informatization Annual Plan of Absorption and Innovation of Introduced Technology of Shanghai (No.11XI-15)
- DOI：10.3969/j.issn.0372-2112.2014.05.032
  CLC： TN432
- Published：2014
- 稿件说明：
移动端阅览
GUO Jia-rong, RAN Feng, XU Mei-hua. A Low-Voltage Sense Amplifier Based on Resistor Mirror[J]. Acta Electronica Sinica, 2014, 42(5): 1030-1034.
DOI：

GUO Jia-rong, RAN Feng, XU Mei-hua. A Low-Voltage Sense Amplifier Based on Resistor Mirror[J]. Acta Electronica Sinica, 2014, 42(5): 1030-1034. DOI： 10.3969/j.issn.0372-2112.2014.05.032.

摘要

提出一种适用于低压快闪存储器的电流模式的低压灵敏放大器.该灵敏放大器在基准电流产生电路中使用电阻电流镜代替传统的晶体管电流镜，使得基准电流产生电路的工作电压减少了一个阈值电压，从而降低灵敏放大器的工作电压.位线电压控制电路中运算放大器的使用减少了由于温度和工艺变化所引起的位线电压变化，进而提高读取操作的精度.采用中芯国际90nm工艺设计，提出的灵敏放大器在1.2V电源电压时的读取时间是14.7ns，相对于传统的结构，单个灵敏放大器的功耗被优化了13%.

Abstract

A new low-voltage and high speed sense amplifier based on very simple direct current-mode comparison is presented.It adopts low-voltage reference cell current generator implemented through using resistor mirror instead of traditional transistor mirror to avoid threshold voltage drop of the transistor mirror thus reducing voltage supply of sense amplifier.The use of operation amplifier in control circuit of bit-line voltage reduces voltage variation due to the variation of temperature and process corner

thus enhancing access precision.The proposed sense amplifier is designed in SMIC (Semiconductor Manufacturing International Corporation) 90nm process and the sense time is 14.7ns at power supply of 1.2V.Meanwhile

the current power of single sense amplifier is optimized by 13% over conventional structure.

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