onsemi NCID94x1 ceramic digital isolator

The NCID94x1 are part of a family of galvanically digital isolators that use patented off-chip capacitor isolation technology from onsemi. These isolators support digital communication between systems without conducting ground loops or hazardous voltages.

Their capacitive ceramic substrate construction offers around 25 times the thickness of thin-film on-chip capacitors and coreless transformers, resulting in electrical performance benefits traditionally offered by optocouplers but exceeding optocouplers in speed, common-mode transient immunity as well as temperature and lifetime performance.

Key features

• Digital isolator matching insulation reliability of optocouplers (DTI ≥ 0.5 mm)
• High speed, no insulation material wear over time and no degradation
• 8 mm clearance and creepage, so16 wide body package
• Safety and regulatory approvals, AEC-Q100 qualified

Additional features

• Digital isolator matching insulation reliability of optocouplers
• Full duplex, bi-directional communication
• DTI (Distance Through Insulation): ≥ 0.5 mm
• 8 mm creepage and clearance distance to achieve reliable HV insulation.
• SO-16 wide body package
• Maximum working insulation voltage: 2000 V peak
• Minimum common-mode rejection: 100 kV/µs
• High Speed:
  • Data rate (NRZ): 50 Mbps
  • Propagation delay: 25 ns max.
  • Pulse width distortion: 10 ns max.
• Specifications guaranteed over 2.5 to 5.5 V supply voltage and -40...125 °C extended temperature range
• No insulation material wear out over time, no degradation, consistent device-to-device performance
• Overtemperature detection
• Output Enable function
• Safety and regulatory approvals
  • UL1577, 5000 VRMS for 1 Minute
  • DIN VDE V 0884−11 (Pending)
• AEC−Q100 qualified: NCIV9211 (Pending)

Applications

• Power Supplies
• Isolated PWM Control
• Industrial Fieldbus Communications
• Microprocessor Interfaces (such as SPI, I2C, etc.)
• Programmable Logic Controller
• Isolated Data Acquisition
• Systems Voltage Level Translators