This paper presents a common-drain-based operational amplifier (OPAMP) fabricated by mono n-type indium-zinc-oxide (IZO) thin-film transistors (TFTs). Positive feedback technology is employed to the load TFTs by cross-coupled connection in order to boost the voltage gain of the common-drain differential pair. The OPAMP exhibits an open-loop voltage gain (A _v ) of 27 dB over a −3 dB bandwidth (BW) of 8.4 kHz at a DC supply voltage of 10 V. The measured unity-gain frequency (UGF), phase margin (PM) and DC power consumption are 119.4 kHz, 36° and 0.96 mW, respectively. Moreover, the chip area of the proposed OPAMP is as small as 0.37 mm $\times0.3$ mm since this concise topology needs only 10 TFTs.

中文翻译：

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利用金属氧化物TFT集成正反馈的通用漏极运算放大器

本文提出了一种由单n型铟锌氧化物（IZO）薄膜晶体管（TFT）制造的基于共漏极的运算放大器（OPAMP）。正反馈技术通过交叉耦合连接应用于负载TFT，以提高共漏极差分对的电压增益。 在10 V的直流电源电压下，OPAMP在8.4 kHz的-3 dB带宽（BW）上表现出27 dB的开环电压增益（A _v）。测得的单位增益频率（UGF），相位裕度（ PM）和DC功耗分别为119.4 kHz，36°和0.96 mW。此外，拟议的运算放大器的芯片面积小至0.37毫米 $ \ times0.3 $ 毫米，因为这种简洁的拓扑仅需要10个TFT。