计算机工程与应用 ›› 2009, Vol. 45 ›› Issue (21): 58-60.DOI: 10.3778/j.issn.1002-8331.2009.21.015

• 研发、设计、测试 • 上一篇    下一篇

多量子阱空间光调制器的驱动电路研制

吴 兰1,余宁梅1,张耀辉2   

  1. 1.西安理工大学 自动化学院,西安 710048
    2.中国科学院 苏州纳米技术与纳米仿生研究所 系统集成部,江苏 苏州 215125
  • 收稿日期:2009-05-05 修回日期:2009-06-01 出版日期:2009-07-21 发布日期:2009-07-21
  • 通讯作者: 吴 兰

Driving circuit for multi-quantum-well spatial light modulator

WU Lan1,YU Ning-mei1,ZHANG Yao-hui2   

  1. 1.Department of Automation and Information Engineering,Xi’an University of Technology,Xi’an 710048,China
    2.Department of System Integration,Suzhou Institute of Nano-tech and Nano-bionics,Suzhou,Jiangsu 215125,China
  • Received:2009-05-05 Revised:2009-06-01 Online:2009-07-21 Published:2009-07-21
  • Contact: WU Lan

摘要: 研制了一种通用可编程的多量子阱空间光调制器驱动电路。该电路利用软件预处理单元产生非线性光电转换控制信号,采用先粗扫再细扫的二次扫描方式,在保证扫描速度及分辨率的同时,有效降低像素单元电路的面积。通过调整驱动电路开关网络结构,减小了开关噪声,提高了输出精度。采用0.35 ?滋m CMOS模拟工艺,完成了64×64阵列的多量子阱空间光调制器驱动电路的版图设计及流片。测试结果显示,芯片可以很好地工作,驱动电压摆幅为0~VDD,驱动电压分辨率可调,最高至256级,单个像素版图面积仅为65 ?滋m×65 ?滋m,可以与多量子阱空间光调制器倒装在一起,满足多量子阱空间光调制器对驱动电路的要求。

关键词: 可编程, 空间光调制器, 驱动电路, 摆幅, 分辨率

Abstract: A universal programmable Multi-quantum-well(MQW) spatial light modulator(SLM) driving circuit is developed in this paper.With a twice scanning,the programmable signals are generated to drive non-linear MQW SLM by using a software preprocessing unit.By adjusting the switching network of the driving circuit,the switching noise is reduced and the output precision is improved.The chip test results show that the driving voltage can swing from 0 to VDD,and its resolution can be close to 256 with only 65 ?滋m×65 ?滋m pixel estate.

Key words: programmable, spatial light modulator(SLM), driving circuit, swing, resolution