中文摘要：

通过对二步法A／D转换器的电路结构及理论分析，提出了一种新的二步法A／D转换器电路结构设计．该设计避免了使用传统二步法转换器结构中的运算放大器，可有效地提高转换器的转换速度与转换精度．仿真结果表明，该二步法的A／D转换器不仅功能正确且电路结构简单．

英文摘要：

The circuit architecture and mathematical expression for two-step A/D converter are analyzed, based on which a novel two-step high-speeding A/D converter is proposed. In the new architecture, the ADC is designed without the amplifier, which makes the convert speed and precision be improved. The simulation result shows that it has a simple architecture and correct function.