Intersil – ISL28022: Precision Digital Power Monitor


The ISL28022 is a bi-directional high side and low side digital current sense and voltage monitor with serial interface. The device monitors current and voltage and provides the results digitally along with calculated power. The ISL28022 provides tight accuracy of less than 0.3% for both voltage and current monitoring over the entire input range. The digital power monitor has configurable fault thresholds and measurable ADC gain ranges.


  • 0V to 60V bus voltage sense range
  • <0.3% voltage and current measuring error
  • Over-/under-voltage and current fault monitoring
  • 3V to 5.5V VCC range
  • Supports 3.4MHz high speed I2C
  • 16-bit Σ∆ADC monitors current and voltage
  • Handles negative system voltage
  • I2C/SMBus interface
  • 8kV ESD (HBM)
  • 1k MSRP: starts at $0.95