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CS5490 数据表(PDF) 55 Page - Cirrus Logic |
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CS5490 数据表(HTML) 55 Page - Cirrus Logic |
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55 / 57 page  CS5490 DS982F3 55 8. BASIC APPLICATION CIRCUITS The CS5490 is configured to measure power in a single-phase, two-wire single voltage and current system, as illustrated in Figure 21. In this diagram, a current transformer (CT) is used to sense the line load current, and a resistive voltage divider is used to sense the line voltage. CT CS5490 Line N VIN- VIN+ IIN+ IIN- Application Processor RESET RX TX GNDA DO VDDA +3.3V 0.1µF 0.1µF +3.3V VDDD +3.3V VREF- VREF+ 0.1µF Wh 4.096 MHz XIN XOUT 1K MODE 5 x250K 1K LOA D 0.1 µF 10K +3.3V 27nF 27nF 1K 1K ½ R BURDEN ½ R BURDEN 27nF 27nF Figure 21. Typical Connection Diagram (Single-phase, Two-wire, Power Meter) |
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