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用参数补偿式来实现高精度集成运算放大器是一种较好的低漂移方案。由于无法识别齐纳二极管短路内调零的最佳调零组态,以致于产品的优品率较低,不利于批量生产。本文针对这一难题,根据齐纳二极管短路内调零的基本原理,独立地设计了系统的硬件和软件。系统完整地模拟了集成运放齐纳二极管短路内调零的各种可能组态,并进行了优化,实验结果符合实际状况,系统具有快速可靠自动的特点,大大提高了工作效率,提高了器件优品率和可靠性,为今后生产高精度集成运放提供了一种新的CAD/CAM手段。本文将微机应用于工艺过程中来控制集成运放的失调漂移,在已见到的文献中,尚属首次。
Using parameter compensation to achieve high precision integrated op amp is a good low-drift solution. Unrecognized Zener diode zero adjustment within the best zero configuration, resulting in a lower rate of excellent products, is not conducive to mass production. In response to this challenge, this paper independently designs the system hardware and software based on the principle of zeroing within the zener diode short-circuit. The system fully simulates all possible configurations of the integrated operational amplifier Zener diode in short-circuit zeroing and optimizes the experimental results in line with the actual situation, the system has the characteristics of fast, reliable and automatic, greatly improving the work efficiency and improving the device Excellent product quality and reliability for the future production of high precision integrated op amp provides a new CAD / CAM means. This article will be the computer used in the process to control the integrated op amp offset drift, in the literature has been seen for the first time.