Abstract：It is significant to increase the precision of reference voltages produced by the reference resistor ladder at the front-end of high-speed A/D converters.To suppress nonlinear errors caused by the loading effect on the resistor ladder,a kind of parallel resistor ladder with fewer resistors on each branch is proposed.The error distribution of reference voltages along the parallel resistor ladder is also given.Without any compensation circuit,obvious precision improvement of reference voltages is achieved in addition to another advantages of faster settling speed、strengthened driving capability and lower temperature sensitivity.Both detailed analysis and simulation results show that it is very suitable for the use in high-speed A/D converters such as flash、multi-step and folding architectures,etc.
王 萍;石 寅. 一种用于高速A/D转换器的高精度参考电压电阻网络[J]. 电子学报, 2000, 28(12): 48-51.
WANG Ping;SHI Yin. A High Precision Reference Resistor Ladder for High-speed A/D Converters. Chinese Journal of Electronics, 2000, 28(12): 48-51.