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MAXQ3183-RAN+ 数据表(PDF) 47 Page - Maxim Integrated Products

部件名 MAXQ3183-RAN+
功能描述  Low-Power, Multifunction, Polyphase AFE with Harmonics and Tamper Detect
PDF  102 Pages
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制造商  MAXIM [Maxim Integrated Products]
网页  https://www.maximintegrated.com/en.html
标志 MAXIM - Maxim Integrated Products

MAXQ3183-RAN+ 数据表(HTML) 47 Page - Maxim Integrated Products

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Low-Power, Multifunction, Polyphase AFE
with Harmonics and Tamper Detect
______________________________________________________________________________________
47
Virtual Register Conversion Coefficients
Voltage Units Conversion Coefficient (VOLT_CC) (0x014)
This register contains the value by which the raw voltage value in each phase (A.VRMS, B.VRMS, and C.VRMS) is
multiplied before being presented to the virtual RMS voltage registers (V.A, V.B, and V.C).
To determine the value of VOLT_CC, a voltage value for the least significant bit (VOLT_LSB) of the V.X registers must
be selected. Typical values might range from 1mV to 1nV. To avoid significant conversion loss, VOLT_LSB should be
chosen such that VOLT_CC is >1000. Once VOLT_LSB is determined, calculate VOLT_CC from the following equa-
tion:
Current Units Conversion Coefficient (AMP_CC) (0x016)
This register contains the value by which the raw current value in each phase (A.IRMS, B.IRMS, C.IRMS, and
N.IRMS) is multiplied before being presented to the virtual RMS current registers (I.A, I.B, I.C, and I.N). To determine
the value of AMP_CC, a current value for the least significant bit (AMP_LSB) of the I.X registers must be selected.
Typical values might range from 1nA to 10μA. To avoid significant conversion loss, AMP_LSB should be chosen
such that AMP_CC is >1000. Once determined, calculate AMP_CC from the following equation:
AMP CC
I
AMP LSB
FS
_
_
=
×
2 24
VOLT CC
V
VOLT LSB
FS
_
_
=
×
2 24
Bit:
15
14
13
12
11
10
9
8
Name:
Voltage Units Conversion Coefficient High Byte
Reset:
0x00
Bit:
7
6
5
4
3
2
1
0
Name:
Voltage Units Conversion Coefficient Low Byte
Reset:
0x01
Bit:
15
14
13
12
11
10
9
8
Name:
Current Units Conversion Coefficient High Byte
Reset:
0x00
Bit:
7
6
5
4
3
2
1
0
Name:
Current Units Conversion Coefficient Low Byte
Reset
0x01



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