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首页> 外文期刊>IEEE Journal of Solid-State Circuits >A High Dynamic Range Current-Mode Amplifier for Computed Tomography
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A High Dynamic Range Current-Mode Amplifier for Computed Tomography

机译:用于计算机断层扫描的高动态范围电流模式放大器

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摘要

In this paper, we show a high dynamic range current-mode detector for computed tomography application. A regulated current mirror structure has been implemented at pixel level that provides with 17 bits dynamic range and a noise floor below 3 pA{sub}(RMS). Nonlinearity is kept below 2% and signal bandwidth is higher than 10 kHz. A test structure with 4×4 pixel array is presented is this paper. Both photodiode and current mode amplifier have been integrated into the same CMOS standard process.
机译:在本文中,我们展示了一种用于计算机断层摄影应用的高动态范围电流模式检测器。已在像素级实现了可调节的电流镜结构,该结构提供了17位动态范围和低于3 pA {sub}(RMS)的本底噪声。非线性保持在2%以下,信号带宽高于10 kHz。提出了一种4×4像素阵列的测试结构。光电二极管和电流模式放大器都已集成到同一CMOS标准工艺中。

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