典型文献
An in situ Digital Background Calibration Algorithm for Multi-Channel R-βR Ladder DACs
文献摘要：
The R-2R resistor ladder is one of the best topologies for implementing compact-sized digital-to-analog converter (DAC) arrays in implantable neuro-stimulators. However, it has a limited resolution and considerable inter-channel variation due to component mismatches. To avoid losing analog information, we present sub-radix-2 DAC implemented by the R-βR resistor ladder in this paper. The digital successive approximation register (DSAR) algorithm corrects the transfer function of DACs based on their actual bit weights. Furthermore, a low-cost in situ adaptive bit-weight calibration (ABC) algorithm drives the analog output error between two DACs to zero by adjusting their bit weights automatically. The simulation results show that the proposed algorithm can calibrate the non-linear transfer function of each DAC and the gain error among multiple channels in the background.
文献关键词：
中图分类号：
作者姓名：
Liang-Jian Lyu;Qing-Zhen Wang;Ze-Peng Huang;Xing Wu
作者机构：
in situ Devices Center, School of Communication and Electronic Engineering, East China Normal University, Shanghai 200241
文献出处：
引用格式：
[1]Liang-Jian Lyu;Qing-Zhen Wang;Ze-Peng Huang;Xing Wu-.An in situ Digital Background Calibration Algorithm for Multi-Channel R-βR Ladder DACs)[J].电子科技学刊,2022(01):43-54
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B类：
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AB值：
0.686884
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