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集成运算放大器,国内已大量应用。但是随着控制技术和测量技术的发展,目前国内一些产品的性能指标,还是不能适应发展的需要。例如:在高精度的A/D转换器和采样保持器中、在高精度的恒流源和电压电流变换器及其信号源中、在高精度高速度的运算和测量技术中都对运算放大器的失调电压失调电流及其二者的温度系数、对开环增盖及其大信号频率响应等性能指标同时提出了很高的要求。而常见的运算放大器是难以同时获得上面所列举的较好的性能指标的。最近我们利用动态校另技术研制成了一种另偏电压自动校正的运算放大
Integrated operational amplifier, a large number of domestic applications. However, with the development of control technology and measurement technology, some domestic product performance indicators still can not meet the needs of development. For example, in high-precision A / D converters and sample-and-hold converters, high-precision constant current sources and voltage-current converters and their sources are used in high-precision and high-speed operation and measurement techniques for operational amplifiers Of the offset voltage offset current and the temperature coefficient of the two, open-loop cover and its large signal frequency response and other performance indicators also put forward very high requirements. The common operational amplifier is difficult to obtain at the same time listed above the better performance indicators. Recently, we use dynamic school technology developed into another partial voltage automatically corrected operational amplification