MAXQ3183-RAN+ datasheet(88/102 Pages) MAXIM

88 / 102 page

Low-Power, Multifunction, Polyphase AFE

with Harmonics and Tamper Detect

______________________________________________________________________________________

Gain, Fundamental Energy, Phase X = A/B/C (X.EF_GAIN) (A: 0x136, B: 0x222, C: 0x30E)

This register contains gain coefficient for phase X fundamental energy. The raw values are taken from the selected

measurement quantity and scaled by the following factor:

Linearity Compensation

Linearity Offset, High Range, Phase X = A/B/C (X.OFFS_HI) (A: 0x138, B: 0x224, C: 0x310)

This signed register contains the linearity offset for phase X current channel when the programmable gain amplifier

is set to unity gain (that is, the measured current is above the low current threshold). The signed value represented

by this register is added to the current value according to following formula:

X.IRMS + X.OFFS_HI x 24

Linearity Gain Coefficient, Low Range, Phase X = A/B/C (X.GAIN_LO)

(A: 0x13A, B: 0x226, C: 0x312)

This register contains the linearity coefficient for phase X current channel when the programmable gain amplifier is

set to gain of 32 (that is, the measured current is below the low current threshold). The effective gain is given by the

equation:

XGAIN LO

214

XEF GAIN

214

Bit:

Name:

Gain Coefficient High Byte

Reset:

0x40

Bit:

Name:

Gain Coefficient Low Byte

Reset:

0x00

Bit:

Name:

Linearity Offset High Byte

Reset:

0x00

Bit:

Name:

Linearity Offset Low Byte

Reset:

0x00

Bit:

Name:

Linearity Coefficient High Byte

Reset:

0x40

Bit:

Name:

Linearity Coefficient Low Byte

Reset:

0x00

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