Unlike existing power monitors where power is multiplied at an ADC’s conversion rate, the LTC2947 implements a unique measurement scheme that results in maximum power measurement accuracy. Each of the three ADCs in the LTC2947 is tailored for a specific task. The first ADC measures current from -30A to 30A and uses a continuous offset calibration to ensure that all input samples are averaged with equal weight and no samples are missed. The second ADC measures both internal temperature and differential voltage at the same time the first ADC is measuring current, where the temperature is reported to the host and used internally by the LTC2947 to compensate for the temperature drift of the internal current sense resistor, resulting in more accurate current measurements. The LTC2947’s “secret sauce” when measuring power and energy really resides in the third ADC, which multiplies current and voltage at a 5MHz sampling frequency, prior to any conversion averaging.