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在集成电路高度发展的今天,集成运算放大器是模拟电路中应用最为广泛的一种功能块.它配接不同的外部元件,能够完成多种信号变换、测量等操作.目前,它的使用几乎和单个晶体管器件一样普遍. 1979年以来,国际上有人应用电源电流读出技术把镜象电流源与运算放大器结合起来,组成一种新型电路,简称为OMA(OperationalMirroredAmplifier)电路.它具有完备的电流与电压间的转换功能.目前,国外已报道制出此类电路的单片集成电路. 根据四端网络理论,一个四端网络的输入与输出间的正向转换关系无非是下列四种. 电压-电压转换器,即电压控制电压源,常用符号
In today's highly developed integrated circuits, integrated operational amplifiers are the most widely used function blocks in analog circuits, and are equipped with different external components to perform a wide range of signal transformations, measurements, etc. At present, their use is almost A single transistor device is as common as 1979. Since 1979, some people use the current source readout technology to combine a mirror current source and an operational amplifier to form a new type of circuit, referred to as an OMA (OperationalMirrored Amplifier) circuit, which has a complete current-to- Voltage conversion function.At present, foreign countries have reported the production of such circuits monolithic integrated circuits.According to the four-terminal network theory, a four-terminal network of the input and output of the forward conversion is nothing more than the following four kinds of voltage - Voltage converter, voltage control voltage source, commonly used symbols