Class AB output stages for low voltage CMOS opamps with accurate quiescent current control by means of dynamic biasing

A. Torralba; R. G. Carvajal; J. Ramirez-Angulo; J. Tombs; F. Munoz; J. A. Galan

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Class AB output stages for low voltage CMOS opamps with accurate quiescent current control by means of dynamic biasing

机译：AB类输出级用于低压CMOS运算放大器，可通过动态偏置实现精确的静态电流控制

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Two new class AB output stages for CMOS op-amps are proposed with accurate quiescent current control. The second proposed stage also provides accurate control of the minimum current through the output transistors. The proposed stages can be operated with a supply voltage close to a transistor threshold voltage. A dynamic biasing scheme allows them to operate in a wide range of supply voltages. Using these stages two opamps have been designed using a 0.8 μm CMOS technology. Experimental results show a unity gain frequency of 15 MHz with 290 μA of quiescent current and a 10 pF load, using a 1.5 V single voltage supply.

机译：提出了两个新的AB类CMOS运算放大器输出级，它们具有精确的静态电流控制。提议的第二阶段还提供对通过输出晶体管的最小电流的精确控制。所建议的级可以在接近晶体管阈值电压的电源电压下工作。动态偏置方案允许它们在很宽的电源电压范围内工作。使用这些级，已经使用0.8μmCMOS技术设计了两个运算放大器。实验结果表明，使用1.5 V单电源供电时，具有290μA静态电流和10 pF负载的15 MHz单位增益频率。

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来源
《Analog Integrated Circuits and Signal Processing》 |2003年第2期|共9页
作者
A. Torralba; R. G. Carvajal; J. Ramirez-Angulo; J. Tombs; F. Munoz; J. A. Galan;
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正文语种 eng
中图分类半导体集成电路（固体电路）;
关键词
Low-voltage; Low-power; Operational amplifiers; Dynamic biasing;

机译：低压;低功率;运算放大器;动态偏置;

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1. Class AB output stages for low voltage CMOS opamps with accurate quiescent current control by means of dynamic biasing [J] . A. Torralba, R. G. Carvajal, J. Ramirez-Angulo, Analog Integrated Circuits and Signal Processing . 2003,第1a2期

机译：AB类输出级用于低压CMOS运算放大器，可通过动态偏置实现精确的静态电流控制
2. Low-Voltage Class-AB CMOS Output Stage with Tunable Quiescent Current [J] . Zhenpeng BIAN, Ruohe YAO, Fei LUO IEICE Transactions on Electronics . 2010,第8期

机译：具有可调静态电流的低压AB类CMOS输出级
3. A novel low voltage very low power CMOS class AB current output stage with ultra high output current drive capability [J] . Leila Safari, Seyed Javad Azhari Microelectronics journal . 2012,第1期

机译：具有超高输出电流驱动能力的新型低压超低功耗CMOS AB类电流输出级
4. Class AB output stages for low voltage CMOS opamps with accurate quiescent current control by means of dynamic biasing [C] . Torralba, A., Carvajal, Electronics, Circuits and Systems, 2001. ICECS 2001. The 8th IEEE International Conference on . 2001

机译：AB类输出级用于低压CMOS运算放大器，可通过动态偏置实现精确的静态电流控制
5. A new architecture for low-voltage low-phase-noise high-frequency CMOS LC voltage-controlled oscillator. [D] . Lieu, Anthony D. 2005

机译：低压低相位噪声高频CMOS LC压控振荡器的新架构。
6. Switched-Biasing Techniques for CMOS Voltage-Controlled Oscillator [O] . Cheol-Woo Kang, Hyunwon Moon, Jong-Ryul Yang 2021

机译：CMOS电压控制振荡器的开关偏置技术
7. A low-voltage CMOS Op Amp with rail-to-rail constant-gm input stage and a class AB rail-to-rail output stage [O] . Botma J.H., Wassenaar R.F., Wiegerink R.J. 1993

机译：具有轨到轨恒定gm输入级和aB类轨到轨输出级的低压CmOs运算放大器

Class AB output stages for low voltage CMOS opamps with accurate quiescent current control by means of dynamic biasing

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