MAXQ3181-RAN+ datasheet(79/84 Pages) MAXIM

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Low-Power, Active Energy, Polyphase AFE

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Energy Accumulated in the Last DSP Cycle

Real Energy, Phase X = A/B/C (X.ACT) (A: 0x1D0, B: 0x2BC, C: 0x3A8)

This signed register provides the raw real energy accumulated over the most recent DSP cycle. For each ADC sam-

ple period, the real instantaneous power calculated from the instantaneous voltage and current is accumulated. At

the end of each DSP cycle, the result of the accumulation over the DSP cycle is copied to this register and is accu-

mulated in X.EAPOS or X.EANEG, depending on the sign of the accumulated energy.

LSB of the energy registers is VFS x IFS x tFR/216.

Apparent Energy, Phase X = A/B/C (X.APP) (A: 0x1D8, B: 0x2C4, C: 0x3B0)

This signed register provides the raw apparent energy accumulated over the most recent DSP cycle.

Bit:

Name:

Real Energy Byte 3

Bit:

Name:

Real Energy Byte 2

Bit:

Name:

Real Energy Byte 1

Bit:

Name:

Real Energy Byte 0

Bit:

Name:

Apparent Energy Byte 3

Bit:

Name:

Apparent Energy Byte 2

Bit:

Name:

Apparent Energy Byte 1

Bit:

Name:

Apparent Energy Byte 0

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