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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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MCP3564-E/ST датащи(PDF) 77 Page - Microchip Technology |
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MCP3564-E/ST датащи(HTML) 77 Page - Microchip Technology |
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77 / 108 page  2019-2021 Microchip Technology Inc. DS20006181C-page 77 MCP3561/2/4 7.0 BASIC APPLICATION CONFIGURATION The MCP3561/2/4 devices can be used for various precision Analog-to-Digital Converter applications. The flexibility of its usage is given by the possibility of configuring the ADC to fit the required application. 7.1 Typical Application for Absolute Voltage Measurement The MCP3561/2/4 is able to measure the signal provided by sensors with absolute voltage output. For such applications, the MCP3561/2/4 will rely on an external voltage reference. Figure 7-1 provides an example that uses the MCP3564 ADC with the MCP1501 external voltage reference. For best perfor- mances, an RC filter and operational amplifier have been placed between the OUT pin of the MCP1501 voltage reference and the REFIN+ input of the MCP3564. The op amp is necessary because the REFIN+ input is not buffered. FIGURE 7-1: MCP3564 Application Example. The ADC can be used in Differential or Single-Ended mode due to the internal dual multiplexer (Figure 5-1). The user can select the input connection settings from the MUX register (Section 8.7 “Multiplexer (MUX) Register”) by using the different settings available on the positive and negative inputs of the ADC. The single-ended configuration is achieved by selecting AGND for the VIN- input of the ADC (MUX[3:0] = 1000) or by selecting any CHn input channel for VIN- and connecting the corresponding CHn input channel to AGND. |
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