Isolated system monitoring IC replaces five components

June 09, 2021 // By Rich Pell
Isolated system monitoring IC replaces five components
Analog and mixed-signal chipmaker Maxim Integrated Products has announced what it says is its smallest and most accurate isolated system-monitoring solution.

An expansion of the company's MAXSafe Technology line, the MAX22530 is an isolated, field-side self-powered 12-bit system monitor. It features four channels and provides isolated system monitoring to improve accuracy 50x (compared to the standard linear optocoupler isolation solutions made from discretes) and to reduce solution size by 40% by integrating five components into a single IC, says the company.

The device is aimed at automation system designers who continually seek ways to save board space, increase channel density, and improve the accuracy of monitoring voltage and current inputs, so operators can monitor the system with finer precision and reduce system downtimes.

"Our new MAX22530 isolated system monitoring solution simplifies the integration of this function in our customer systems and provides improved system monitoring accuracy of voltage and current inputs that result in better real-time decision-making to extend system productivity," says Suravi Karmacharya, senior business manager for the Industrial and Healthcare Business Unit at Maxim Integrated.

The MAX22530 uses the company's integrated isolation technology that combines a 12-bit ADC, a DC-DC converter, user-settable threshold detection levels and chip-level diagnostic capabilities. This combination, says the company, enables 50x greater stability in current transfer ratio performance to achieve an ultra-stable sense resistor voltage.

By achieving better measurement accuracy across four voltage and current inputs, the MAX22530 is designed to allow end users to make better real-time decisions to improve system performance and enhance productivity. The integration also allows a 250-mm 2 solution size, which is 40% smaller that the 420-mm 2 size for the closest competitive discrete solution.

Key advantages of the MAX22530 are offered as:

  • Design Simplicity : Integrates five ICs into one 12-bit ADC to ease system design
  • Reduced Size : Compact design reduces solution size 40 percent and provides 43 percent higher channel density
  • Higher Accuracy : 50 times greater accuracy

The MAX22530 is available for $4.85 (1000-up, FOB USA). An evaluation kit - the MAX22530EVKIT - is available


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