Improvement of frequency performance of fully differential operational amplifier for switched-capacitor application

机译：改进交换电容应用全差分运算放大器频率性能

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In recent years, switched-capacitor (SC) structure has been widely used in many electronic fields, such as analog to digital converter (ADC) and digital to analog converter (DAC). The vital part in the SC structure is operational amplifier (Op-Amp), to improve the performance of SC structure, a good operational amplifier is necessary. In this paper, based on 0.18µm process, we proposed two types of differential Op-Amps: traditional differential structure and fully differential telescopic structure. Aiming to realize better frequency performance, we compared this two types and find out the telescopic structure has much better unity gain bandwidth (UGBW) up to 690MHz with similar small signal gain and phase margin.

机译：近年来，开关电容（SC）结构已广泛用于许多电子领域，例如模拟转换器（ADC）和数模转换器（DAC）。 SC结构的重要部分是运算放大器（OP-AMP），以提高SC结构的性能，需要良好的运算放大器。本文基于0.18μm的工艺，我们提出了两种类型的差分OP-AMPS：传统差分结构和全差动伸缩结构。旨在实现更好的频率性能，我们比较了这两种类型并找出了伸缩结构具有更好的单位增益带宽（UGBW），高达690MHz，具有相似的小信号增益和相位余量。

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《International Forum on Electrical Engineering and Automation》|2020年|5-9|共5页
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Xunyu Li;
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Operational amplifiers; Electrical engineering; Automation; Digital-analog conversion; Switches; Bandwidth; Switching circuits;

机译：运算放大器;电气工程;自动化;数字模拟转换;开关;带宽;开关电路;

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专利

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机译：适用于高频开关电容器应用的新型CMOS运算放大器设计技术
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机译：用于开关电容器应用的低压低功耗快速建立CMOS运算跨导放大器
3. Low-power design techniques for low-voltage fast-settling operational amplifiers in switched-capacitor applications [J] . Reza Lotfi, Mohammad Taherzadeh-Sani, M. Yaser Azizi, Integration . 2003,第4期

机译：开关电容器应用中用于低压快速建立运算放大器的低功耗设计技术
4. Low-voltage low-power fast-settling CMOS operational transconductance amplifiers for switched-capacitor applications [C] . Mohammad Yavari, Omid Shoaei International symposium on Low power electronics and design . 2003

机译：用于开关电容器应用的低压低功耗快速建立CMOS运算跨导放大器
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6. Voltage-Mode Multifunction Biquad Filter and Its Application as Fully-Uncoupled Quadrature Oscillator Based on Current-Feedback Operational Amplifiers [O] . San-Fu Wang, Hua-Pin Chen, Yitsen Ku, 2020

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机译：高性能全微分纯电流模式运算放大器及其应用

Improvement of frequency performance of fully differential operational amplifier for switched-capacitor application

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