cs5467 Cirrus Logic, Inc., cs5467 Datasheet - Page 17

• Manufacturer Part Number: cs5467
• Description: Four-channel Power / Energy Ic
• Manufacturer: Cirrus Logic, Inc.

4.9 Peak Voltage and Current
Peak current ( I1
( V1
samples detected in the previous low-rate interval.
4.10 Power Offset
The power offset registers, P1
to offset erroneous power sources resident in the sys-
tem not originating from the power line. Residual power
offsets are usually caused by crosstalk into current
paths from voltage paths or from ripple on the meter or
DS714F1
PEAK
, V2
PEAK
) are the largest current and voltage
PEAK
, I2
PEAK
OFF
) and peak voltage
( P2
OFF
) can be used
chip’s power supply, or from inductance from a nearby
transformer.
These offsets can be either positive or negative, indicat-
ing crosstalk coupling either in phase or out of phase
with the applied voltage input. The power offset regis-
ters can compensate for either condition.
To use this feature, measure the average power at no
load using either Single or Continuous Conversion com-
mands. Take the measured result (from the P1
( P2
to the associated power offset register, P1
AVG
) register), invert (negate) the value and write it
CS5467
OFF
( P2
OFF
AVG
17
).