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LM741CH Datasheet(PDF) 7 Page - Texas Instruments |
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LM741CH Datasheet(HTML) 7 Page - Texas Instruments |
7 / 15 page ![]() 7 LM741-MIL www.ti.com SNOSD62 – JUNE 2017 Product Folder Links: LM741-MIL Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated 7.4 Device Functional Modes 7.4.1 Open-Loop Amplifier The LM741-MIL can be operated in an open-loop configuration. The magnitude of the open-loop gain is typically large thus for a small difference between the non-inverting input terminals and the inverting input terminals, the amplifier output is driven near the supply voltage. Without negative feedback, the LM741-MIL can act as a comparator. If the inverting input is held at 0 V, and the input voltage applied to the non-inverting input is positive, the output will be positive. If the input voltage applied to the non-inverting input is negative, the output is negative. 7.4.2 Closed-Loop Amplifier In a closed-loop configuration, negative feedback is used by applying a portion of the output voltage to the inverting input. Unlike the open-loop configuration, closed loop feedback reduces the gain of the circuit. The overall gain and response of the circuit is determined by the feedback network rather than the operational amplifier characteristics. The response of the operational amplifier circuit is characterized by the transfer function. |
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