MAXQ3181-RAN+ datasheet(72/84 Pages) MAXIM

72 / 84 page

Low-Power, Active Energy, Polyphase AFE

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Meter Measurement Averaging Filter (AVG_C) (0x030)

This register determines whether the all other measured values in the electricity meter are averaged over time. If the

value of this register is nonzero, all measured meter values are averaged using the following formula:

If the value of this register is zero, no averaging is performed. The MSB of this register must be zero.

Meter Measurement Highpass Filter (HPF_C) (0x032)

This register specifies the b0 coefficient of a first-order Butterworth filter using the following formula:

The MSB of this register must be zero.

Zero-Cross Lowpass Filter (ZC_LPF) (0x05A)

This register specifies the lowpass filter applied for zero-cross detection. The MSB of this register must be zero.

HPF C

AVG C

−

Bit:

Name:

Meter Measurement Averaging Filter High Byte

Reset:

0x40

Bit:

Name:

Meter Measurement Averaging Filter Low Byte

Reset:

0x00

Bit:

Name:

Meter Measurement Highpass Filter High Byte

Reset:

0x00

Bit:

Name:

Meter Measurement Highpass Filter Low Byte

Reset:

0xC8

Bit:

Name:

Zero-Cross Lowpass Filter High Byte

Reset:

0x0B

Bit:

Name:

Zero-Cross Lowpass Filter Low Byte

Reset:

0x00

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