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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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INA188IDR датащи(PDF) 28 Page - Texas Instruments |
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INA188IDR датащи(HTML) 28 Page - Texas Instruments |
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28 / 41 page  Input (V) -10 -8 -6 -4 -2 0 2 4 6 8 10 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 D001 28 INA188 SBOS632 – SEPTEMBER 2015 www.ti.com Product Folder Links: INA188 Submit Documentation Feedback Copyright © 2015, Texas Instruments Incorporated Typical Application (continued) 8.2.2 Detailed Design Procedure The following steps must be applied for proper device functionality: • For a 4-mA to 20-mA input, the maximum burden of 0.4 V must have a burden resistor equal to 0.4 / 0.02 = 20 Ω. • To center the output within the 0-V to 5-V range, VREF must equal 2.5 V. • To keep the ±20-mA input linear within 0 V to 5 V, the gain resistor (RG) must be 12.4 kΩ. • To keep the ±10-V input within the 0-V to 5-V range, attenuation must be greater than 0.05. • A 100-k Ω resistor in series with a 4.87-kΩ resistor provides 0.0466 attenuation of ±10 V, well within the ±2.5- V linear limits. 8.2.3 Application Curve Figure 56. Plot of PLC Input Transfer Function |
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