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Low-voltage op amp design and differential difference amplifier design using linear transconductor with resistor input

机译:使用带有电阻器输入的线性跨导体的低压运算放大器设计和差分差动放大器设计

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摘要

This paper describes a 1-V wide-input range and high linearity transconductance input stage that uses poly resistor and input-impedance boosting technique. Using the proposed transconductor, an op amp and a differential difference amplifier (DDA) were implemented in a 1.2-/spl mu/m CMOS process. The transconductor has a total harmonic distortion (THD) of less than -60 dB for an input swing of 400 mV at 10 kHz. The op amp and the DDA show a peak-to-peak output swing of 800 mV and a THD of less than -70 dB for an output swing of 600 mV at 10 kHz.
机译:本文介绍了一种采用多晶硅电阻和输入阻抗升压技术的1V宽输入范围和高线性跨导输入级。使用提出的跨导体,以1.2- / spl mu / m CMOS工艺实现了运算放大器和差分差动放大器(DDA)。对于10 kHz的400 mV输入摆幅,跨导的总谐波失真(THD)小于-60 dB。运算放大器和DDA在10 kHz时的输出摆幅为600 mV时,峰峰值输出摆幅为800 mV,THD小于-70 dB。

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