na podstawie opisu funkcji:

The MAX34427 automatically sequences through the channels to collect samples from the common-mode voltage and the current-sense amplifiers. The 16-bit current value and the 14-bit voltage value are then multiplied to create a 30-bit power value that is then written to the power accumulator. The MAX34427 contains a 56-bit power accumulator for each channel. This accumulator is updated at a programmable rate between 4 to 4096 times per second. When the host is ready to pull the latest accumulation data, it first sends the update command. This update command cross loads the accumulation count and accumulation data of both channels into the registers that the host can read at any time. This type of operation allows the host to control the accumulation period. The only constraint is that the host should access the data before the accumulators can over-
flow. If the accumulators overflow, they do not roll over. The MAX34427 contains a 14-bit ADC for voltage and a 13-bit ADC for current. During each sample time, a 14-bit voltage sample and a 16-bit current sample are resolved. To create a 16-bit current value from the 13-bit ADC, the device takes two current samples: one with the current sense amplifier in a high-gain mode and another with the amplifier in a low-gain mode. The high gain setting is eight times the low-gain setting. Based on the two currentsense ADC results, the device determines which result provides the best accuracy and fills the 16-bit current sample accordingly.

https://datasheets.maximintegrated.com/en/ds/MAX34427.pdf