ZJ03高速高精度锁定电压比较器的设计

THE DESIGN OF THE HIGH SPEED AND HIGH PRECISION LATCHING VOLTAGE COMPARATOR ZJ 03

本文介绍一种新型的取样锁定电压比较器ZJ03的设计。一般的电压比较器由多级直接耦合放大器组戒,其精度(灵敏度)主要取决于总电压增益,响应速度取决于总带宽,精度与响应速度是矛盾的,难以实现高速和高精度。ZJ03在体制上有重要的改进,它含有一级受控的正反馈放大器,使精度主要取决于输入失调电压,与总带宽几乎没有关系,可实现高速和高精度。在ZJ03的设计中,采用了容差扩展、中心设计和电平自适应技术,提高了产品性能的一致性和成品率。

The design of a new type of sampling latching voltage comparator ZJ03 is described. The common voltage comparators consist of multistage DC amplifier. It is difficult to realize high speed and high precision. The voltage comparator ZJ03 contains a controlled positive feedback amplifier. Therefore, it is capable of realizing high speed and high preci-sion. For improving the performance and yield, the tolerance extension, design centering and potential adapting are used for the design of the valtage comparator ZJ03.