基于ASIC和FPGA的可扩展红外信息获取架构设计

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中图分类号：TP732.2；TP399 文献标志码：A DOI：10.12305/j.issn.1001-506X.2025.04.04

Abstract：With the continuous development of remote sensing technology，ultra-large scale infrared detectorcomponents are gradually applied in the field of earth observation，which brings new requirements for information acquisition technology： simultaneously processing of hundreds of tap signals acquisition， conditioning，sampling，quantization and signal preprocessng with each tap readout frequency of up to 10MHz or more.Aiming atthe application scenarioofa new large-scale infrared detector，a smart and highly integrated large-scale infrared information acquisition electronics architecture based on field-programmable gate array （FPGA）and application specific integrated circuit （ASIC） is designed. With an expandable modular design，a single information acquisition module can collect 64-channel signals.When the analog to digital（AD） sampling rate of each channel is 12 mega samples per second（MSPS），the maximum data rate of the single channel module is not less than l2 Gbps，which realizes the integration of information acquisition，processing and transmission of ultra-large scale infrared detector，solves the problem of high-speed and low noise information acquisition of ultra-large scale infrared detector，and improves the integration of infrared camera. The test results of the infrared camera show that the infrared camera can simultaneously acquire more than 64 channels of detector signals and the AD conversion rate of per channelis 12 MSPS with the peak data rate of 12.288 Gbps. Circuit noise is less than 0.2mV （rms）and the system noise is less than 0.6mV （rms）.

Keywords：infrared camera；large scale；high integration；low noise；information acquisitior

0 引言

近几年，随着红外遥感技术的发展，空间红外相机、红外探测器规模急剧膨胀[]。（剩余15385字）