ISO7041 - Ultra-low power four-channel digital isolator

The ISO7041 device is an ultra-low power, multichanneldigital isolator that can be used to isolate CMOS or LVCMOS digital I/Os. Each isolation channelhas a logic input and output buffer separated by a double capacitive silicon dioxide(SiO₂) insulation barrier. Innovative edge based architecture combined withan ON-OFF keying modulation scheme allows these isolators to consume very-low power while meeting3000-V_RMS isolation rating per UL1577. The per channel dynamic currentconsumption of the device is under 130 µA/Mbps and the per channel static current consumption is4.4µA at 3.3 V.

The device can operate as low as 2.25 V, as high as 3.63 V, and isfully functional with different supply voltages on each side of isolation barrier.The four channel isolator comes in a 16-QSOP package with three forward-directionchannels and one reverse-direction channel in a 16-QSOP package. The device has defaultoutput high and low options. If the input power or signal is lost, default output ishigh for the ISO7041 device andlow for the ISO7041F device with the Fsuffix. See the Device Functional Modes section for moreinformation.

• Ultra-Low Power Consumption
  • 4.4 µA per Channel Quiescent Current (3.3 V)
  • 16 µA per Channel at 100 kbps (3.3 V)
  • 126 µA per Channel at 1 Mbps (3.3 V)
• Robust Isolation Barrier
  • >100-Year Projected Lifetime
  • 3000 V_RMS Isolation Rating
  • ±100 kV/µs Typical CMTI
• Wide Supply Range: 2.25 V to 3.63 V
• Wide Temperature Range: –40°C to +125°C
• Small 16-QSOP Package (16-DBQ)
• Signaling Rate: Up to 2 Mbps
• Default Output High (ISO7041) and Low (ISO7041F) Options
• Robust Electromagnetic Compatibility (EMC)
  • System-Level ESD, EFT, and Surge Immunity
  • Very Low Emissions
• Safety-Related Certifications (Planned):
  • UL 1577 Component Recognition Program
  • DIN V VDE V 0884-11
  • CQC, TUV and CSA Certifications
  • IECEx (IEC 60079-0 & IEC 60079-11) and ATEX (EN 60079-11)

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