Computer Controls

New Maxim MAX22518

On July 28th 2020, Maxim Integrated officially released MAX22518 for mass production – a Self-Powered, Two-Channel, 3.5kVRMS Digital Isolator.

The MAX22518 is a dual-channel digital galvanic isolator with integrated field-side supply using Maxim's proprietary process technology. The field-side power is supplied by the logic-side using an integrated isolated DC-DC converter. This approach eliminates the bulky and expensive external isolated power supply when the power demand of the field side is small. The MAX22518 features basic isolation with a withstand voltage rating of 3.5kVRMS for 60s or 445VRMS of continuous operation. With a single resistor on each input, the inputs of the MAX22518 can withstand 1.2/50µs surge pulses up to ±2kV between inputs (common mode) or up to ±1kV between input and field ground (differential), as well as continuous shorts to 24VAC. So this device provides compact, reliable, and cost-efficient solutions for applications such as industrial IoT, industrial networking systems, and building automation.

The MAX22518 has open-drain outputs with high impedance output default state. Other product options with push-pull output and high output default state are to be released later on by Maxim Integrated. The product is available in a 8-pin wide-body SOIC package with 5.5mm of creepage and clearance, rated for operation at ambient temperatures of -40°C to +125°C.

It could be used in wide area of applications including:

  • Industrial IoT
  • Industrial Networking System
  • Building Automation
  • Medical Equipment

Customer can evaluate MAX22518 features and performance using the MAX22518 Evaluation Kit that provides easy access to any signals onboard through either terminal points or test points.

Get your Datasheet for the new MAX22518 [PDF]


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Download datasheet (PDF)