MAXQ3183 Maxim, MAXQ3183 Datasheet - Page 99

• Manufacturer Part Number: MAXQ3183
• Description: The MAXQ3183 is a dedicated electricity measurement front-end that collects and calculates polyphase voltage, current, power, energy, and many other metering and power-quality parameters of a polyphase load
• Manufacturer: Maxim

This register contains the apparent accumulated energy delivered into phase A/B/C or total. The register is the prod-
uct of the ENR_CC and X.ESF registers.
This signed register contains for a phase current the total harmonic distortion plus noise (power) ratio, computed as
below, where X.IRMS
Note that the sign bit is at the most significant bit of byte 5.
Low-Power, Multifunction, Polyphase AFE
Byte 7 (MSByte unused)
Byte 7 (MSByte unused)
______________________________________________________________________________________
FUND
Byte 5
Byte 3
Byte 1
Byte 5
Byte 3
Byte 1
is the fundamental current RMS.
Current Total Harmonic Distortion Plus Noise, Phase A/B/C (THDN.X)
with Harmonics and Tamper Detect
Fundamental Apparent Energy, Phase A/B/C/T (ENRSF.X)
THDN X
.
=
X IRMS
.
X IRMS
.
2
FUND
(A: 0x8B1, B: 0x8B2, C: 0x8B4, T: 0x8B7)
2
−
1
(A: 0x859, B:0x85A, C: 0x85C)
Byte 6 (unused)
Byte 6 (unused)
Byte 0 (LSByte)
Byte 4
Byte 2
Byte 4
Byte 2
Byte 0
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