| 一种具有积分电容复用功能的红外读出电路设计 |
| 投稿时间：2023-08-25 修订日期：2023-09-15 点此下载全文 |
| 引用本文：辛亚萍,李敬国,苑宁,薛艳茹.一种具有积分电容复用功能的红外读出电路设计[J].红外,2024,45(3):7~14 |
| 摘要点击次数: 489 |
| 全文下载次数: 130 |
|
|
| 中文摘要:为提高长波红外探测器的电荷处理能力，提出了一种积分电容复用技术。该技术将读出电路阵列分为奇偶行两个部分，使奇偶行像素分开进行积分读出。当所有的奇行像素积分时，所有的偶行像素均不进行积分。奇行像素复用偶行像素的积分电容，奇行像素积分结束后按行列顺序依次读出。同样地，当所有偶行像素积分时，奇行像素不进行积分，偶行像素复用奇行像素的电容，积分完成后偶行像素按顺序读出。相比于使用叠层电容来提高电荷处理能力的方法，积分电容复用技术更加有效且不受工艺限制。仿真结果表明，积分电容复用技术可将像素的等效积分电容提升至原来的2倍，使读出电路的电荷处理能力从20 Me-提升至40 Me-。 |
| 中文关键词:读出电路 积分电容复用 大电荷处理能力 高灵敏度 |
| |
| Design of an Infrared Readout Circuit with Integral Capacitor Multiplexing Function |
|
|
| Abstract:To improve the charge processing capability of longwave infrared detectors, an integrated capacitor multiplexing technology is proposed. This technology divides the readout circuit array into two parts: odd and even rows. The odd and even row pixels are integrated and read out separately. When all odd row pixels are integrated, all even row pixels are not integrated. The odd row pixels reuse the integration capacitance of even row pixels, and after the integration of odd row pixels is completed, they are read out in order of row and column. Similarly, when all even row pixels are integrated, odd row pixels are not integrated, and even row pixels reuse the capacitance of odd row pixels. After integration is completed, even row pixels are read out in order. Compared to the method of using stacked capacitors to improve charge processing capacity, the integrated capacitor multiplexing technology is more effective and not limited by the process. The simulation results show that the integrated capacitance multiplexing technology can increase the equivalent integrated capacitance of pixels to twice the original value, and increase the charge processing ability of the readout circuit from 20 Me- to 40 Me-. |
| keywords:readout circuit integral capacitor multiplexing large charge processing capability high sensitivity |
| 查看全文 HTML 查看/发表评论 下载PDF阅读器 |