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An Amorphous-Silicon Operational Amplifier and Its Application to a 4-Bit Digital
本文提出了一种适用于非晶硅薄膜晶体管技术的运算放大器电路拓扑，并应用于4位数字模拟转换器。
25V电源电压, 3.68mW功耗, DNL 0.216 LSB, INL 0.667 LSB, 最大转换率0.9 kS/s
非晶硅数字模拟转换器运算放大器正反馈薄膜晶体管
▸采用正反馈提高运算放大器增益
▸适用于系统面板应用的模拟电路设计
▸基于电阻串和单位增益缓冲器的4位DAC原型
Abstract
ieh-Hung Hsieh, and Liang-Hung Lu
Abstract—A circuit topology suitable for the implementation of
operational amplifiers (OPAMPs) in an amorphous-silicon (a-Si)
thin-film-transistor (TFT) technology is presented in this paper.
Due to the use of a positive feedback in the input differential pair,
the gain of the OPAMP is effectively boosted, facilitating analog
circuit designs for system-on-panel (SoP) applications. Based on
the proposed technique, a 4-bit digital-to-analog converter (DAC)
prototype