onsemi NCID(V) Bi-Directional Ceramic Digital Isolators
onsemi NCID(V) Bi-Directional Ceramic Digital Isolators are galvanically isolated full-duplex, bi-directional, high-speed dual-channel digital isolators offered in a 16-pin wide-body small outline package. The NCID9210 supports isolated communications allowing digital signals to communicate between systems without conducting ground loops or hazardous voltages.
The onsemi NCID9210 Bi-Directional Ceramic Digital Isolators implement the patented galvanic off-chip capacitor isolation technology and optimized IC design to achieve high insulation and high noise immunity. These features are characterized by high common-mode rejection and power supply rejection specifications.
The thick ceramic substrate yields capacitors with ~25 times the thickness of thin-film on-chip capacitors and coreless transformers. The result combines the electrical performance benefits that digital isolators offer with the safety reliability of a >0.5mm insulator barrier similar to what optocouplers have historically provided.
Features
- Off−chip capacitive isolation to achieve reliable high voltage insulation
- ≥0.5mm DTI (Distance Through Insulation)
- 2000Vpeak Maximum working insulation voltage
- Specifications guaranteed over 2.5V to 5.5V supply voltage and -40°C to 125°C extended temperature range
- High speed:
- 50Mbit/s Data Rate (NRZ)
- 25ns Maximum propagation delay
- 10ns Maximum pulse width distortion
- No insulation material wears out over time up to 1500V, no LED degradation, consistent performance from device-to-device
- 100KV/µs Minimum common-mode rejection
- Full duplex, bi−directional communication
- 8mm Creepage and clearance distance to achieve reliable high voltage insulation
- Over-temperature detection
- NCIV prefix for automotive and other applications requiring unique site and control change requirements; AEC−Q100 Qualified and PPAP capable (pending)
- Safety and regulatory approvals
- UL1577, 5000VRMS for 1 minute
- DIN VDE V 0884−11 (pending)
Applications
- Isolated PWM control
- Industrial field bus communications
- Microprocessor system interface (SPI, I2C, etc.)
- Programmable logic control
- Isolated data acquisition system
- Voltage level translator
Block Diagram
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