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六、集成运放在模拟变换电路中的应用在广泛的应用领域中,经常需要实现各种物理量之间的相互转换。例如实现电压-电压,电压-电流,电压-频率,电压-时间之间的转换。在这方面,集成运放可以起到非常有效的有源转换元件的作用。运放所固有的高Aod往往可以保证转换器具有很高的转换精度,而运放的高CMRRo则又保证了转换器的转换特性在很大程度上与电源电压无关。因此,正确设计的转换器电路通常具有很理想的性能。通过本节的讨论,我们将看到集成运放在这方面的应用是相当活跃的。
Six, integrated operational amplifier in the analog conversion circuit applications In a wide range of applications, often need to achieve a variety of physical conversion between. For example, voltage to voltage, voltage to current, voltage to frequency, voltage to time conversion. In this regard, the integrated operational amplifier can play a very effective role of the active conversion element. The high AOD inherent in op amps often ensures high converter accuracy, while the high CMRRo in op amps ensures that the converter’s conversion characteristics are largely independent of supply voltage. Therefore, the correct design of the converter circuit usually has very good performance. Through the discussion in this section, we will see the integrated op amp in this application is quite active.