Analog Devices Inc. MAX22841 Reinforced 4-Channel Digital Isolators

Analog Devices Inc. MAX22841 Reinforced 4-Channel Digital Isolators are ultra-low-power digital galvanic isolators using Analog Devices’ proprietary process technology. MAX22841 isolators are available in a wide SOIC-16 package with a withstand voltage rating of 5kVRMS for 60 seconds. The devices transfer digital signals between circuits with different power domains, using as little as 77.04µW per channel at a 1Mbps (1.8V supply). Three out of four channels of the MAX22841 transfer data in one direction while the other one transfers data in the opposite direction. These devices are rated for operation at ambient temperatures from -40°C to +125°C. 

An ultra-low-power feature reduces system dissipation, increases reliability, and enables compact designs. Devices are available with a maximum data rate of 10Mbps and default-high or -low outputs. The devices feature low propagation delay and clock jitter, which reduces system latency. Independent 1.71V to 5.5V supplies on each side also make the devices suitable for use as level translators.

Features

  • Ultra-low power consumption
    • 9.6µA per channel at DC with VDD = 3.3V
    • 13.2µA per channel at 100kbps with VDD = 3.3V
    • 47.6µA per channel at 1Mbps with VDD = 3.3V
  • Wide 1.71V to 5.5V operating voltage range
  • Reinforced galvanic isolation of digital signals
    • Withstands ±10kV surge between GNDA and GNDB with 1.2µs/50µs waveform
    • High CMTI (200kV/µs minimum)
    • Wide 16-SOIC package
    • 5000VRMS isolation voltage for 60s (VISO)
    • 848VRMS continuous working voltage (VIOWM)
  • Low propagation delay and low jitter
    • Up to 10Mbps maximum data rate 
    • 43.8ns (typ) propagation delay at VDD = 3.3V
    • 35.0ps typical clock jitter RMS
  • Pending safety regulatory approvals
    • UL according to UL1557
    • VDE 0884-11 reinforced insulation
    • CSA IEC 62368-1 and IEC 61010-1

Applications

  • 4mA to 20mA loop process control
  • Compact micro PLCs
  • Battery management
  • Parasitically powered applications

Simplified Application Diagram

Application Circuit Diagram - Analog Devices Inc. MAX22841 Reinforced 4-Channel Digital Isolators

Analog Devices Inc. MAX22841 Reinforced 4-Channel Digital Isolators