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OPA991 数据表(PDF) 32 Page - Texas Instruments |
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OPA991 数据表(HTML) 32 Page - Texas Instruments |
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32 / 59 page  V CC + – 7.5 k LOAD I LOAD 360 k LM7705 5 V V OUT R SHUNT R F R G OPA991 100 m 32 OPA991, OPA2991, OPA4991 SBOS969B – OCTOBER 2019 – REVISED MAY 2020 www.ti.com Product Folder Links: OPA991 OPA2991 OPA4991 Submit Documentation Feedback Copyright © 2019–2020, Texas Instruments Incorporated 8 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. 8.1 Application Information The OPAx991 family offers excellent DC precision and AC performance. These devices operate up to 40-V supply rails and offer true rail-to-rail input/output, low offset voltage and offset voltage drift, as well as 4.5-MHz bandwidth and high output drive. These features make the OPAx991 a robust, high-performance operational amplifier for high-voltage industrial applications. 8.2 Typical Applications 8.2.1 Low-Side Current Measurement Figure 53 shows the OPA991 configured in a low-side current sensing application. For a full analysis of the circuit shown in Figure 53 including theory, calculations, simulations, and measured data, see TI Precision Design TIPD129, 0-A to 1-A Single-Supply Low-Side Current-Sensing Solution. Figure 53. OPA991 in a Low-Side, Current-Sensing Application 8.2.1.1 Design Requirements The design requirements for this design are: • Load current: 0 A to 1 A • Output voltage: 4.9 V • Maximum shunt voltage: 100 mV |
类似零件编号 - OPA991_V01 |
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类似说明 - OPA991_V01 |
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