Circuit and method for measuring operational amplification bias current and shielding control unit
A technology of control unit and bias current, applied in the field of electronics, can solve the problem of inability to realize accurate current measurement of operational amplifiers, inability to measure bias current of FET input operational amplifiers, and test accuracy that cannot reach nanoampere and picoampere precision, etc. problem, to achieve the effect of not easy self-excitation phenomenon, effective measurement, and strong stability
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[0093] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.
[0094] In order to illustrate the technical solutions of the present invention, specific examples are used below to illustrate.
[0095] In the first aspect, an embodiment of the present invention provides a circuit for measuring the bias current of an operational amplifier, such as figure 1 shown, including:
[0096] The inverting input terminal control unit 1 is connected to the inverting input terminal of the operational amplif...
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