| 一种用于预放大器的平均电阻网络设计 |
| |
| 引用本文： | 刘清远,王宗民,张铁良,柳博,霍淼.一种用于预放大器的平均电阻网络设计[J].微电子学,2023,53(3):379-384. |
| |
| 作者姓名： | 刘清远 王宗民 张铁良 柳博 霍淼 |
| |
| 作者单位： | 北京微电子技术研究所, 北京 100071 |
| |
| 基金项目： | 国家重点研发项目(SQ2019YFB220011) |
| |
| 摘 要： | 基于预放大器阵列,设计了一种用于解决电压失调的平均电阻网络。分析了电阻网络边界效应产生的原因。采用冗余预放大器设计、环形平均网络设计,并提出非等值终端电阻设计缓解边界效应。提出节点矩阵电流方程,为平均电阻网络的设计提供优化方向。在采用节点矩阵电流方程改善边界效应后,将该预放大器阵列用于12 bit的折叠插值ADC中,在2.5 GSPS采样频率、1.242 GHz的0.8 V正弦输入下,得到ADC的ENOB为10.32 bits,SFDR为74.3 dB。
|
| 关 键 词： | 折叠插值ADC 平均电阻网络 边界效应 非等值电阻 节点矩阵电流方程 |
| 收稿时间： | 2022/8/20 0:00:00 |
An Average Resistor Network Design for Pre-Amplifier |
| |
| LIU Qingyuan,WANG Zongmin,ZHANG Tieliang,LIU Bo,HUO Miao.An Average Resistor Network Design for Pre-Amplifier[J].Microelectronics,2023,53(3):379-384. |
| |
| Authors: | LIU Qingyuan WANG Zongmin ZHANG Tieliang LIU Bo HUO Miao |
| |
| Affiliation: | Beijing Microelectronics Technology Institution, Beijing 100071, P. R. China |
| |
| Abstract: | Based on the pre-amplifier array, an average resistor network was designed to reduce voltage offset. The causes of boundary effect of resistance network were analyzed. Redundant pre-amplifier design and ring average network design are adopted, and unequal termination resistance design is proposed to alleviate the boundary effect. The node matrix current equation was proposed. It could provide the optimization direction for the design of average resistance network. After the boundary effect improved by using the node matrix current equation design, using the pre-amplifier array in a 12-bit folding-interpolation ADC, the ENOB is 10.32 bits and the SFDR is 74.3 dB at a sampling frequency of 2.5 GSPS and a 0.8 V sinusoidal input of 1.242 GHz. |
| |
| Keywords: | |
|
| 点击此处可从《微电子学》浏览原始摘要信息 |
|
点击此处可从《微电子学》下载全文 |
|
