MAXQ3181-RAN+ Maxim Integrated Products, MAXQ3181-RAN+ Datasheet - Page 47
MAXQ3181-RAN+
Manufacturer Part Number
MAXQ3181-RAN+
Description
IC AFE POLYPHASE LO-PWR 28-TSSOP
Manufacturer
Maxim Integrated Products
Datasheet
1.MAXQ3181-RAN.pdf
(84 pages)
Specifications of MAXQ3181-RAN+
Number Of Channels
8
Power (watts)
35mW
Voltage - Supply, Analog
3.3V
Voltage - Supply, Digital
3.3V
Package / Case
28-TSSOP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Number Of Bits
-
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This register contains the RMS voltage on phase A/B/C. The units are defined by the VOLT_CC setting such that V.X
= X.VRMS x VOLT_CC. In this equation, VOLT_CC is the conversion coefficient. See the VOLT_CC register for more
information.
This register contains the RMS current on phase A/B/C or the neutral channel. The units are defined by the AMP_CC
setting such that I.X = X.IRMS x AMP_CC. In this equation, AMP_CC is the conversion coefficient. See the AMP_CC
register for more information.
This signed register contains the power factor of the total power. The power factor is calculated as:
It is expressed in units of 0.00001; thus, unity power factor is expressed as decimal 100,000
(0x00000000000186A0). This register is presented as a two’s complement value, so that a load delivering real power
to the line (that is, reverse power) is seen as having a power factor of -1 (0x0000FFFFFFFE7960).
Low-Power, Active Energy, Polyphase AFE
______________________________________________________________________________________
Byte 7 (MSByte unused)
Byte 7 (MSByte unused)
Byte 7 (MSByte unused)
RMS Amps, Phase X = A/B/C/N (I.X) (A: 0x841, B: 0x842, C: 0x844, N: 0x840)
Byte 5
Byte 3
Byte 1
Byte 5
Byte 3
Byte 1
Byte 5
Byte 3
Byte 1
RMS Volts, Phase X = A/B/C (V.X) (A: 0x831, B: 0x832, C: 0x834)
PF T
.
=
A ACT B ACT C ACT
A APP B APP C APP
.
.
+
+
.
.
+
+
.
.
Power Factor (PF.T) (0x867)
Byte 6 (unused)
Byte 6 (unused)
Byte 6 (unused)
Byte 0 (LSByte)
Byte 0 (LSByte)
Byte 0 (LSByte)
Byte 4
Byte 2
Byte 4
Byte 2
Byte 4
Byte 2
Voltage and Current
Power Factor
47
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