近年来,美国生产高精度线性集成电路的PMI公司(Precision Monolithics Inc.)推出了由该公司率先开拓的集成运放最小相移应用技术。正确地应用这种技术,在相同闭环增益下对指定的相位误差,运放的工作频域大体可以扩展1～2个数量级,而模值误差仅有些微恶化。因而这种技术对于相位误差作首要要求的电路系统具有重要意义,本文将扼要介绍这种技术的理论背景。 In recent years, Precision Monolithics Inc., a United States manufacturer of high-precision linear integrated circuits, has introduced the company’s pioneering integrated op amp minimum phase shift application technology. Correct application of this technique, the same closed-loop gain for the specified phase error, the operational amplifier can be broadly expanded operating frequency range of 1 to 2 orders of magnitude, and the model error is only slightly worse. Therefore, this technique is of great importance to the circuit system that is the primary requirement of phase error. This article will briefly introduce the theoretical background of this technique.