An analog organic first-order CT ΔΣ ADC on a flexible plastic substrate with 26.5dB precision
An analog organic first-order CT ΔΣ ADC on a flexible plastic substrate with 26.5dB precision
复制标题
柔性塑料基板上的模拟有机一阶 CT ΔΣ ADC，精度为 26.5dB
DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
P. Heremans
中科院分区：
文献类型：
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作者：
H. Marien;M. Steyaert;N. Aerle;P. Heremans
有机电子有望在柔性显示器、RFID标签和智能传感器系统中找到商业应用，例如用于食品工业或生物医学应用。该技术的主要优点是在柔性塑料箔上直接生产晶体管和电路，直接集成传感器，光源，光探测器等的可能性。同样的技术和低加工温度保证了生产的成本效益。然而，有机电子技术相对于基于硅的技术具有重要的缺点，例如其固有的较低迁移率、大的参数变化和非常低的固有晶体管增益（通常为5）。此外，作为有源元件，几乎仅P型晶体管可用，而作为无源元件，仅存在电容器。代替电阻，我们仅限于线性偏置晶体管。有机RFID [1，2]和几种类型的有机传感器[3]的工作已经提出。有机技术中的模拟设计尚处于起步阶段：[4]中提出了第一个差模增益为10的差分放大器;[5]中讨论了模拟设计的设计考虑因素;[6]中提出了比较器;[7]中提出了基于C-2C链的6位D/A转换器。在目前的工作中，我们公开了第一个ADC的设计，制造和测量的塑料箔上的有机技术与全模拟设计方法。
Organic electronics is expected to find commercial applications in flexible displays, RFID tags and smart sensor systems, e.g. for food industry or biomedical applications. Key benefits of the technology are the direct production of transistors and circuits on flexible plastic foils, the possibility to directly integrate sensors, light sources, light detectors, a.o. with the same technology, and the low processing temperatures that warrant cost-efficient production. However, organic electronics technologies suffer from important drawbacks versus silicon based technologies, such as its intrinsically lower mobility, the large parameter variation and a very low intrinsic transistor gain (typically 5). Moreover as active components almost exclusively p-type transistors are available and as passive components only capacitors exist. In place of resistors, we are limited to only linear biased transistors. Work on organic RFID [1,2] and several types of organic sensors [3] has been presented. Analog designs in organic technology are in their infancy: a first differential amplifier with differential-mode gain of 10 was presented in [4]; design considerations for analog designs were discussed in [5]; a comparator was presented in [6]; and a 6-bit D/A converter based on a C-2C chain in [7]. In the present work, we disclose the first ADC designed, fabricated and measured in an organic technology on plastic foil with a fully analog design approach.