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Table 4 Power measurements of the prototype hardware Footnote

Power measurements of the LDO, MEMS, and OPAMPS are performed with a 4 points measurement on a Hameg HM8112-3 precision multimeter

From: High precision hybrid RF and ultrasonic chirp-based ranging for low-power IoT nodes

  Acoustic front-end Edge-processing  
  LDO +MEMS OPAMP 1 OPAMP 2 ADC (nRF52)datasheet Total
Active current (μA) 113.1 81.5 81.5 300 576.1
Passive current (μA) 0.03 0 0 1.9 1.93
Active power (nW) @1 ms 407.2 293.4 293.4 1080 2074.0
Passive power (nW) @ 999 ms 107.9 0 0 6833.2 6940.9
Total power (nW) 515.1 293.4 293.4 7913.2 9014.9