71M6545HT-IGTRSLASHF datasheet(5/66 Pages) MAXIM

5 / 66 page

Maxim Integrated │ 5

71M6545T/71M6545HT

Energy Meter ICs

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LIST OF FIGURES

Figure 1. I/O Equivalent Circuits ................................................................. 16

Figure 2. 71M6545T/HT Operating with Local Sensors ............................................... 19

Figure 3. 71M6545T/HT Operating with Remote Sensor for Neutral Current ............................... 20

Figure 4. Multiplexer Sequence with Neutral Channel and Remote Sensors ............................... 22

Figure 5. Multiplexer Sequence with Neutral Channel and Current Transformers ........................... 22

Figure 6. Waveforms Comparing Voltage, Current, Energy per Interval, and Accumulated Energy ............. 36

Figure 7. Typical Voltage Sense Circuit Using Resistive Divider......................................... 38

Figure 8. Typical Current-Sense Circuit Using Current Transformer in a Single-Ended Configuration ........... 38

Figure 9. Typical Current-Sense Circuit Using Current Transformer in a Differential Configuration.............. 38

Figure 10. Typical Current-Sense Circuit Using Shunt in a Differential Configuration ........................ 38

Figure 11. 71M6545T/HT Typical Operating Circuit Using Locally Connected Sensors ....................... 39

Figure 12. 71M6545T/HT Typical Operating Circuit Using Remote Neutral Current Sensor ................... 40

Figure 13. Typical I2C Operating Circuit ............................................................41

Figure 14. Typical UART Operating Circuit ..........................................................41

Figure 15. Typical Reset Circuits ..................................................................41

Figure 16. Typical Emulator Connections ...........................................................41

Figure 17. CE Data Flow—Multiplexer and ADC ..................................................... 63

Figure 18. CE Data Flow—Offset, Gain, and Phase Compensation ..................................... 63

Figure 19. CE Data Flow—Squaring and Summation ................................................. 64

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