Summary of ON SEMICONDUCTOR NCID9211 CERAMIC DIGITAL ISOLATOR
The NCID9211 is a galvanically digital isolator utilizing ON Semiconductor's off-chip capacitor technology. It enables safe digital communication without ground loops, offering superior speed and immunity compared to optocouplers. Key attributes include high-speed data rates up to 50 Mbps, robust insulation reliability with 8 mm clearance, and an SO16 wide body package suitable for automotive applications under AEC-Q100 standards.
Parts used in the NCID9211 Project:
- NCID9211 Digital Isolator
- Ceramic substrate construction
- Off-chip capacitor isolation technology
- SO16 wide body package
The NCID9211 is part of a family of galvanically digital isolators that use ON Semiconductor’s patented off-chip capacitor isolation technology

The NCID9211 is part of a family of galvanically digital isolators that use ON Semiconductor’s patented off-chip capacitor isolation technology. These isolators support digital communication between systems without conducting ground loops or hazardous voltages.
Their capactive ceramic substrate construction offers ~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.
- SO16 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 to +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 (Pending)
- AEC−Q100 qualified: NCIV9211 (Pending)
Read more: ON SEMICONDUCTOR NCID9211 CERAMIC DIGITAL ISOLATOR
- What technology does the NCID9211 use?
The device uses ON Semiconductor’s patented off-chip capacitor isolation technology. - How fast is the data rate of the NCID9211?
The maximum data rate is 50 Mbps using NRZ encoding. - Does the NCID9211 support full duplex communication?
Yes, it supports full duplex and bi-directional communication. - What is the minimum common-mode rejection of this isolator?
The minimum common-mode rejection is 100 kV/µs. - Can the NCID9211 operate over extended temperatures?
Specifications are guaranteed over a temperature range of -40 to +125 °C. - Is the NCID9211 qualified for automotive applications?
Yes, it is AEC-Q100 qualified. - What package type does the NCID9211 come in?
The device comes in an SO16 wide body package. - Does the NCID9211 suffer from insulation material wear out?
No, there is no insulation material wear out or degradation over time.
