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应用功能： Ultralow Input Bias CurrentOperational Amplifier The AD549 is a monolithic electrometer operational amplifierwith very low input bias current. Input offset voltage and inputoffset voltage drift are laser trimmedfor precision performance.The AD549’sultralow input current is achieved with “Topgate” JFET technology, a process development exclusive to AnalogDevices. This technology allows the fabrication of extremely low
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