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首页> 外文会议>IEEE International Conference on Solid-State and Integrated Circuit Technology >Research on Low Power Constant Transconductance Rail-to-Rail Operational Amplifier Technology
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Research on Low Power Constant Transconductance Rail-to-Rail Operational Amplifier Technology

机译：低功率恒跨导轨对轨对轨对轨运算放大器技术的研究

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摘要

In order to solve the influence of the input stage transconductance of the rail-to-rail op amp with the common-mode input voltage change, real-time common-mode voltage monitoring technology is used to dynamically track the transconductance change of the rail- to- rail op amp input stage through the bias current. High-precision quantitative compensation for constant control of the input stage transconductance. The design and implementation of the specific circuit based on 0.18µm and CMOS process show that the op amp gain is 148dB and the phase margin is 61° under the condition of power supply voltage 3.3V, load resistance 100Ω and load capacitance 1nF. The total power consumption is only 39.6 microwatts, the common mode input range is as high as 0-3.3V, and the transconductance change rate of the input stage is only 2.1 %.
机译：为了解决利用共模输入电压变化的轨到轨运算放大器的输入级跨导的影响，使用实时共模电压监测技术动态跟踪轨道的跨导变化 - 通过偏置电流进行轨道运算放大器输入级。输入阶段跨导的恒定控制的高精度定量补偿。基于0.18μm和CMOS工艺的特定电路的设计和实现表明，在电源电压3.3V，负载电阻100Ω和负载电容1nf的情况下，运算放大器增益为148dB，相位裕度为61°。总功耗仅为39.6微型，共模输入范围高达0-3.3V，输入级的跨导变化率仅为2.1％。

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