A high-gain high-current-efficiency OTA

ZHENG Kai-lun; GUO Gui-liang

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A high-gain high-current-efficiency OTA

更新时间：2026-09-04

- A high-gain high-current-efficiency OTA
- Vol. 37, Issue 6, Pages: 51-56(2020)
- 作者机构：
  
  1. 中国科学院机构微电子研究所,北京,100029
  2. 中国科学院大学机构,北京,101408
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2020
- 稿件说明：
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郑凯伦, 郭桂良. 一种高增益高电流效率的运算跨导放大器[J]. 微电子学与计算机, 2020, 37(6): 51-56.

ZHENG Kai-lun, GUO Gui-liang. A high-gain high-current-efficiency OTA[J]. 2020, 37(6): 51-56.
郑凯伦, 郭桂良. 一种高增益高电流效率的运算跨导放大器[J]. 微电子学与计算机, 2020, 37(6): 51-56. DOI：

ZHENG Kai-lun, GUO Gui-liang. A high-gain high-current-efficiency OTA[J]. 2020, 37(6): 51-56. DOI：

摘要

为了提高增益自举OTA的电流效率，对主运放、辅助运放及其共模反馈电路进行了电流复用，在华宏0.35 m工艺5 V电源电压下实现了一种具有大DC增益(大于121 dB)、高电流效率(大于1 146 MHz*pF/mA)、宽差分输出动态范围(大于9 V)的OTA结构.

Abstract

In order to enhance the current efficiency of gain-boosting OTA

the current recycling technique has been used in main OTA

auxiliary OTA and its common-mode feedback circuit. Implemented in 5 V HHGrace 0.35 m CMOS process

simulated results show that the improved OTA possesses high DC gain (> 121 dB)

high current efficiency (> 1 146 MHz*pF/mA) and wide differential output dynamic range (> 9 V).

关键词

Keywords

references

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