学术
一种12位D／A转换器的技术研究
杨卫东[1,2] 李儒章[1,2] 刘勇[1,2] 杨永辉[1,2] 俞宙[1,2] 孟华群[1,2]
[1]模拟集成电路国家级重点实验室 [2]中国电子科技集团公司第二十四研究所,重庆400060
摘 要:
介绍了一种12位带内基准的电压输出型D／A转换器的电路实现原理、线路设计及其制作工艺特点。通过采用优化设计的R-2R电阻开关网络、温度补偿齐纳基准源和带JFET输入级的输出运算放大器等模拟电路单元，基于一种P阱5μm LC^2MOS工艺，研制出该12位D／A转换器。它具有转换精度高、线性及微分误差小、功耗低、转换速度快、使用方便等优点。[著者文摘]
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文章出处:
《微电子学》-2008年38卷1期 -64-67页
栏目信息:
分 类 号:
文献标识码:
A
文章编号:
1004-3365（2008）01-0064-04
Investigation into Technology for a 12-Bit D/A Converter
YANG Wei-dong, LI Ru-zhang, LIU Yong, YANG Yong-hui, YU Zhou, MENG Hua-qun （National Laboratory of Analog IC＇s, Sichuan Institute of Solid-State Circuits, CETC, Chongqing 400060, P. R, China）
Abstract:
A 12-bit voltage output D/A converter with a built-in reference source was presented. The operational principle, circuit design and characteristics of process technology were described. By using analog unit circuits, such as optimized R-2R resistor switching network, temperature compensation Zener reference source, and output operational amplifier with JFET input, a 12-bit D/A converter was developed based on a p-well 5μm LC^2 MOS process technology. The converter features high conversion resolution, small linear and differential error, low power consumption, fast conversion speed, and convenience for use.[著者文摘]
Key words:
D/A converter; Zener reference voltage source; Output operational amplifier; LC2 MOS process
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