ISL28022

Precision Digital Power Monitor

OVERVIEW

The ISL28022 is a bidirectional 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.

The ISL28022 handles common-mode input voltage ranging from 0V to 60V. The wide range permits the device to handle telecom, automotive and industrial applications with minimal external circuitry. Both high- and low-side ground sensing applications are easily handled with the flexible architecture.

The ISL28022 consumes an average current of just 700μA and is available in a 10 Ld MSOP package. The ISL28022 is also offered in a space saving 16 Ld QFN package. The part operates across the extended temperature range from -40°C to +125°C

KEY FEATURES

  • Bus voltage sense range: 0V to 60V
  • 16-bit ΣΔADC monitors current and voltage
  • Voltage measuring error: <0.3%
  • Current measuring error: <0.3%
  • Handles negative system voltage
  • Overvoltage/undervoltage and current fault monitoring
  • I2C/SMBus interface
  • Wide VCC range: 3V to 5.5V
  • ESD (HBM): 8kV
  • Supports high speed I2C: 3.4MHz

BLOCK DIAGRAM

 Block Diagram

PARAMETRICS

Parameters
ISL28022
Basic Information
Production Status
Mass Production
VS (min)
3 V
VS (max)
5.5 V
IS (per amp)
0.7 mA
PSRR (dB)
105
Output
I2C
Gain Error/Measurement Error Max
0.3
Max Offset Voltage
75 µV
CMRR (dB)
130
Common Mode Input Range (min)
0 V
Common Mode Input Range (max)
60V
Qualification Level
Standard
Can Sample
YES
Temperature Range
-40 to +125

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