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MCP4017 датащи(PDF) 52 Page - Microchip Technology |
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MCP4017 датащи(HTML) 52 Page - Microchip Technology |
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52 / 66 page ![]() MCP4017/18/19 DS22147A-page 52 © 2009 Microchip Technology Inc. 8.4 Wheatstone Bridge Trimming Another common configuration to “excite” a sensor (such as a strain gauge, pressure sensor or thermistor) is the wheatstone bridge configuration. The wheatstone bridge provides a differential output instead of a single-ended output. Figure 8-7 illustrates a wheatstone bridge utilizing one to three digital potentiometers. The digital potentiometers in this example are used to trim the offset and gain of the wheatstone bridge. FIGURE 8-7: Wheatstone Bridge Trimming. VDD VOUT 5k Ω 50 k Ω 50 k Ω MCP4017 MCP4017 MCP4017 |
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