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LM324-MIL Arkusz danych(PDF) 10 Page - Texas Instruments |
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LM324-MIL Arkusz danych(HTML) 10 Page - Texas Instruments |
10 / 25 page V RF A RI V 1.8 A 3.6 0.5 V VOUT A VIN Vsup+ + VOUT RF VIN RI Vsup- Copyright © 2016, Texas Instruments Incorporated 10 LM324-MIL SLOS987 – JUNE 2017 www.ti.com Product Folder Links: LM324-MIL Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated 9 Application and Implementation NOTE Information in the following applications sections is not part of the TI component specification, and TI does not warrant its accuracy or completeness. TI’s customers are responsible for determining suitability of components for their purposes. Customers should validate and test their design implementation to confirm system functionality. 9.1 Application Information The LM324-MIL operational amplifier is useful in a wide range of signal conditioning applications. Inputs can be powered before VCC for flexibility in multiple supply circuits. 9.2 Typical Application A typical application for an operational amplifier in an inverting amplifier. This amplifier takes a positive voltage on the input, and makes it a negative voltage of the same magnitude. In the same manner, it also makes negative voltages positive. Figure 9. Application Schematic 9.2.1 Design Requirements The supply voltage must be chosen such that it is larger than the input voltage range and output range. For instance, this application will scale a signal of ±0.5 V to ±1.8 V. Setting the supply at ±12 V is sufficient to accommodate this application. 9.2.2 Detailed Design Procedure Determine the gain required by the inverting amplifier using Equation 1 and Equation 2: (1) (2) Once the desired gain is determined, choose a value for RI or RF. Choosing a value in the kilohm range is desirable because the amplifier circuit will use currents in the milliamp range. This ensures the part will not draw too much current. This example will choose 10 kΩ for RI which means 36 kΩ will be used for RF. This was determined by Equation 3. (3) |
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