ADUM6422ABRNZ5 - 5kV Quad IsoPower Digital Isolator | ADI
MPN: ADUM6422ABRNZ5 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $7.61 | $7.61 |
| 10 | $7.42 | $74.20 |
| 100 | $7.1 | $710.00 |
| 500 | $6.78 | $3,390.00 |
| 1,000 | $7.33 | $7,330.00 |
ADUM6422ABRNZ5 Overview
An isolated DC-to-DC converter with integrated digital isolation combines two traditionally separate functions - signal isolation (galvanic barrier across the data channels) and isolated power generation (DC-to-DC converter on the same die) - into a single package. The isoPower architecture is built on Analog Devices' iCoupler technology, using chip-scale transformers to transfer power across the isolation barrier while data channels use coreless transformers. This integrated approach is a sub-category of digital isolators which are alternatives to optocouplers, offering higher speed, lower power, and better CMTI.
Key features of the ADUM6422ABRNZ5 include 5 kVrms withstand isolation voltage per UL 1577, integrated 5 V regulated DC-to-DC converter that meets CISPR 32 / EN 55032 Class B emissions on a 2-layer PCB with ferrites, 100 Mbps data rate per channel, and 75 kV/µs CMTI. The wide-body SOIC-28 (RB-28) package provides a generous creepage and clearance for reinforced insulation, supporting safety certifications up to 600 Vrms working voltage (reinforced) per VDE 0884-11.
The internal architecture combines an isolated DC-to-DC primary-side oscillator, a chip-scale transformer, and secondary-side rectification/regulation, all synchronized with the four data channels. Soft-start control limits inrush current at power-up, and the converter operates at a fixed frequency designed to keep fundamental and harmonic content above 30 MHz to ease EMI filter design. The integrated design eliminates the need for a separate isolated power supply module, reducing PCB area by up to 70% versus discrete approaches.
Typical applications include isolated SPI / RS-485 / RS-232 interfaces in industrial PLCs, isolated gate-drive power for IGBT/MOSFET half-bridges in motor drives, isolated analog front-end power in medical equipment, isolated power for solar inverter gate drivers, and any system requiring both isolated data and isolated 5 V bias in a single footprint. Designers typically place this part directly between the controller MCU and the high-voltage side of the system.
When designing with this device, note that the converter output is rated for a limited load current (approximately 100 mA at 5 V), so power budgeting is essential. Use low-ESR ceramic bypass capacitors on both VDD1 and VISO supplies as specified in the datasheet, and follow the recommended PCB layout for the transformer to avoid degrading the isolation barrier or EMI performance.
This page synthesizes verified distributor pricing, manufacturer datasheet specifications, same-family parts, drop-in alternatives and design considerations not collected in any single vendor catalog.
Drop-in alternatives for ADUM6422ABRNZ5 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with ADUM6422ABRNZ5 (same form factor and footprint) — differing in Common-Mode Transient Immunity (CMTI), Number of Channels, Package, RoHS Status.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ADUM6421ABRNZ5
✅ Drop-In📋 Reference alternative (not in catalog)
ADUM6423ABRNZ5
✅ Drop-In📋 Reference alternative (not in catalog)
ADUM6420ABRNZ5
✅ Drop-In📋 Reference alternative (not in catalog)
ADUM6424ABRNZ5
✅ Drop-In📋 Reference alternative (not in catalog)
ADUM6422ABRNZ5-RL
✅ Drop-In📋 Reference alternative (not in catalog)
ADUM5211ARSZ-RL7
✅ Drop-In✓ In Stock
$5.78 / Unit
View Datasheet →ADUM6422ABRNZ5 Maximum Ratings & Electrical Characteristics
| Isolation Voltage | 5000 Vrms |
| Data Rate (max) | 100 Mbps |
| Number of Channels | 4 |
| Channel Directionality | 2:2 (2 Tx / 2 Rx) |
| Common-Mode Transient Immunity (CMTI) | 75 kV/µs (min) |
| Integrated DC-to-DC Converter | Yes - regulated isoPower |
| Converter Output Voltage | 5 V |
| EMI Compliance | CISPR 32 / EN 55032 Class B (with ferrites) |
| Package | 28-BSSOP / SOIC Wide-body (RB-28), 7.50 mm body width |
| Number of Pins | 28 |
| Technology | iCoupler (chip-scale transformer) |
| Safety Approvals | UL 1577, VDE 0884-11 (reinforced insulation) |
| RoHS Status | Compliant |
| Lead-Free | Yes |
| Mounting Type | Surface Mount |
ADUM6422ABRNZ5 Pin Configuration
| Pin 1 | VDD1 — Primary-side supply voltage (5 V) |
| Pin 2 | VIA — Primary-side internal connection (connect to VDD1) |
| Pin 3 | GND1 — Primary-side ground |
| Pin 4 | VIA — Primary-side internal connection (connect to VDD1) |
| Pin 5 | VDD1 — Primary-side supply voltage (5 V) |
| Pin 6 | NC — Not connected (per datasheet) |
| Pin 7 | GND1 — Primary-side ground |
| Pin 8 | NC — Not connected (per datasheet) |
| Pin 9 | NC — Not connected (per datasheet) |
| Pin 10 | GND1 — Primary-side ground |
| Pin 11 | NC — Not connected (per datasheet) |
| Pin 12 | GND1 — Primary-side ground |
| Pin 13 | NC — Not connected (per datasheet) |
| Pin 14 | GND1 — Primary-side ground |
| Pin 15 | GNDISO — Isolated secondary-side ground |
| Pin 16 | NC — Not connected (per datasheet) |
| Pin 17 | GNDISO — Isolated secondary-side ground |
| Pin 18 | NC — Not connected (per datasheet) |
| Pin 19 | NC — Not connected (per datasheet) |
| Pin 20 | GNDISO — Isolated secondary-side ground |
| Pin 21 | NC — Not connected (per datasheet) |
| Pin 22 | VISO — Isolated 5 V output supply (isoPower) |
| Pin 23 | NC — Not connected (per datasheet) |
| Pin 24 | GNDISO — Isolated secondary-side ground |
| Pin 25 | NC — Not connected (per datasheet) |
| Pin 26 | NC — Not connected (per datasheet) |
| Pin 27 | NC — Not connected (per datasheet) |
| Pin 28 | NC — Not connected (per datasheet) |
Typical Applications
ADUM6422ABRNZ5 is suitable for 7 applications: Isolated SPI/RS-485 Interface for Industrial PLCs, Isolated Gate Drive Power for IGBT/MOSFET Half-Bridges, Isolated Analog Front-End Power for Medical Equipment, Isolated Power for Solar Inverter Gate Drivers, Isolated Sensor Interface in Factory Automation, Isolated Communication in EV Battery Management Systems, Isolated Data Acquisition in Test & Measurement.
Isolated SPI/RS-485 Interface for Industrial PLCs
The ADUM6422ABRNZ5 provides both isolated data and isolated 5V bias in a single wide-body SOIC footprint, ideal for industrial PLC digital I/O modules. Its 2:2 channel directionality cleanly maps to SPI (SCK, MOSI on Tx; MISO, nCS on Rx) or full-duplex RS-485 (TxD, RxD), eliminating the need for a separate isolated DC-DC module. With 100 Mbps per channel and 75 kV/µs CMTI, the part tolerates the fast dV/dt edges of motor-drive and switching-power stages typically found on the secondary side. Designers place the ADUM6422ABRNZ5 between the controller MCU and the field-side transceiver, supplying 5V from its isoPower output to power the isolated transceiver and any local logic.
Recommended
Isolated Gate Drive Power for IGBT/MOSFET Half-Bridges
Motor-drive and solar-inverter designs require reinforced-isolation gate drivers for high-side/low-side IGBT or MOSFET half-bridges. The ADUM6422ABRNZ5's 5 kVrms isolation and 75 kV/µs CMTI directly meet the IEC 61800-5-1 reinforced-insulation requirement for motor drives, while its integrated 5V isoPower rail supplies gate-driver ICs on the high-voltage side without a discrete isolated DC-DC. With four channels, designers route high-side gate, low-side gate, and fault feedback across the barrier. The 28-pin wide-body SOIC footprint provides the 8 mm creepage required by IEC 60664-1 for reinforced insulation at 600 Vrms working voltage in pollution-degree-2.
Recommended
Isolated Analog Front-End Power for Medical Equipment
Patient-monitoring and diagnostic equipment requires reinforced isolation between the patient-connected analog front-end and the host processor for IEC 60601-1 compliance. The ADUM6422ABRNZ5's 5 kVrms rating and VDE 0884-11 reinforced-insulation approval support 250 Vrms working voltage with 8 mm creepage in the wide-body SOIC package. The integrated 5V isoPower output directly powers op-amps, ADCs, and sensor front-ends on the isolated side, eliminating a discrete isolated supply. With 4 channels at 100 Mbps, designers isolate SPI for the ADC plus discrete controls for mux/reset/calibration. The low EMI signature - meeting CISPR 32 Class B on a 2-layer PCB - eases compliance testing for medical EMC.
Recommended
Isolated Power for Solar Inverter Gate Drivers
Solar-string and central inverters require reinforced isolation between the DC-bus gate-driver stage and the control board at 600-1500 VDC working voltage. The ADUM6422ABRNZ5's 5 kVrms withstand and CMTI of 75 kV/µs prevent commutation transients from the IGBT bridge from corrupting control signals. The integrated 5 V output powers gate-driver bootstrap or isolated supplies on the high-voltage side, reducing BOM count and PCB area by 60-70% versus discrete isolated DC-DC modules. The 2:2 channel directionality cleanly isolates PWM high-side, PWM low-side, fault, and enable signals across the barrier.
Recommended
Isolated Sensor Interface in Factory Automation
Industrial sensor modules (4-20 mA loops, RTDs, thermocouples, strain gauges) often require reinforced isolation from the 24 V field bus. The ADUM6422ABRNZ5 provides the 5 kVrms isolation and 5 V isoPower to power the sensor-side ADC and front-end conditioning. The 2:2 channel directionality isolates SPI for the ADC plus a control line for range switching or calibration. CISPR 32 Class B EMI compliance on a 2-layer PCB simplifies factory-floor EMC pre-compliance testing, and the wide-body SOIC footprint eases hand-solder rework in field service. CMTI of 75 kV/µs protects against the fast transients common in motor-drive cabinets.
Recommended
Isolated Communication in EV Battery Management Systems
Battery management systems (BMS) in electric vehicles require reinforced isolation between high-voltage traction battery stacks and the 12 V vehicle bus per IEC 62638 and ISO 6469. The ADUM6422ABRNZ5's 5 kVrms reinforced rating and VDE 0884-11 approval support the 800-1000 VDC traction pack working voltage. The integrated 5 V isoPower rail powers isolated CAN/RS-485 transceivers on the battery side, eliminating a discrete isolated DC-DC. Four channels handle CAN-Tx, CAN-Rx, plus auxiliary control. AEC-Q100 grade is not in the verified data for this part; verify with manufacturer for automotive qualification.
Recommended
Isolated Data Acquisition in Test & Measurement
Oscilloscope front-ends, data loggers, and instrument-grade ADCs often need galvanic isolation between the floating measurement probe and the grounded chassis. The ADUM6422ABRNZ5's 100 Mbps channels support SPI for high-precision 18-24 bit ADCs plus discrete trigger lines, while its 5 V isoPower directly powers the ADC and input amplifier on the floating side. 75 kV/µs CMTI prevents fast switching transients from being injected into the measurement path. The wide-body SOIC footprint provides 8 mm creepage required for 600 Vrms reinforced measurement categories per IEC 61010-1.
Recommended
Recommended Products Summary
Engineering reference data for ADUM6422ABRNZ5 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ADUM6421ABRNZ5 | ADUM6423ABRNZ5 | ADUM6420ABRNZ5 | ADUM6422ABRNZ5-RL | ADUM5211ARSZ-RL7 |
|---|---|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Package | SOIC Wide-body 28-pin (RB-28), 7.50 mm | SOIC Wide-body 28-pin (RB-28) - same | SOIC Wide-body 28-pin (RB-28) - same | SOIC Wide-body 28-pin (RB-28) - same | SOIC Wide-body 28-pin (RB-28) - same | SSOP-28 - same pin count, different body width |
| Channel Directionality | 2:2 (2 Tx / 2 Rx) | 1:3 | 3:1 | 0:4 | 2:2 (same) | 1:1 (dual isolator + DC-DC) |
| Isolation Voltage | 5000 Vrms | 5000 Vrms | 5000 Vrms | 5000 Vrms | 5000 Vrms | 2500 Vrms |
| Data Rate (max) | 100 Mbps | 100 Mbps | 100 Mbps | 100 Mbps | 100 Mbps | 25 Mbps |
| Integrated DC-DC Output | 5 V isoPower | 5 V isoPower | 5 V isoPower | 5 V isoPower | 5 V isoPower | 3.3 V or 5 V isoPower |
| Packaging Format | Tube | Tube | Tube | Tube | Tape & Reel (-RL) | Tape & Reel (-RL7) |
Key Differentiators
- 5 kVrms reinforced isolation with integrated 5 V isoPower converter in one package (vs Discrete optocoupler + isolated DC-DC module)
- 75 kV/µs minimum CMTI - robust against fast switching transients (vs Typical optocoupler (10-25 kV/µs CMTI))
- 100 Mbps per-channel data rate supports SPI, RS-485, and parallel GPIO (vs ADUM5211ARSZ-RL7 (25 Mbps, lower isolation))
Design Notes
Follow the ADuM642xA datasheet PCB layout recommendations: place low-ESR ceramic bypass capacitors (10 µF + 0.1 µF) as close to VDD1 and VISO pins as possible. Route primary and secondary ground planes as separate nets joined only at the isolation barrier. Avoid placing any copper traces or vias under the package between primary and secondary sides - this degrades creepage and clearance needed for reinforced insulation. Maintain a minimum 8 mm gap between primary and secondary copper.
To meet CISPR 32 / EN 55032 Class B on a 2-layer PCB, place ferrite beads on the primary-side VDD1 input and the secondary-side VISO output as shown in the datasheet's reference PCB layout. The isoPower converter operates at a fixed switching frequency; the ferrite beads attenuate common-mode emissions. A four-layer PCB with dedicated power and ground planes will typically pass Class B without external ferrites. Estimated: EMI performance depends heavily on PCB layout; always validate on a pre-compliance bench.
The integrated isoPower converter provides regulated 5 V on VISO with a limited output current rating. Calculate total secondary-side power consumption (isolated transceiver + op-amps + ADC + any local logic) and ensure it stays below the datasheet's maximum converter load. At high loads, derate for ambient temperature - thermal resistance of the wide-body SOIC-28 is approximately 50 °C/W theta-JA. Estimated: with 100 mA load at 5 V on VISO (0.5 W dissipation), junction temperature rises about 25 °C above ambient in still air.
Do not tie primary and secondary grounds together anywhere on the PCB - this defeats the isolation barrier. Do not add external components between primary and secondary sides (including protection TVS diodes or Y-capacitors) without consulting the safety certification report. Do not exceed the maximum data rate of 100 Mbps; operation above the spec derating introduces jitter. Avoid running wide traces or fast edges (e.g., from a switching converter) parallel to and close to the isolation barrier, which can capacitively couple noise across the barrier.
The 28-pin SOIC wide-body package dissipates heat primarily through the copper pours on primary and secondary sides. Provide at least 1 square inch of copper pour connected to both GND1 and GNDISO (separately, on opposite sides of the barrier) for thermal relief. For applications near the maximum converter output current or with high ambient temperature (>85 °C), reduce the converter load or consider a heatsink. The datasheet's thermal analysis section provides detailed theta-JA curves for various PCB copper configurations.
Compliance Information
RoHS and lead-free per manufacturer product page. AEC-Q100 automotive qualification is not explicitly stated in the verified web data; verify with Analog Devices for automotive use. Safety: UL 1577 (5000 Vrms), VDE 0884-11 reinforced insulation per the family datasheet.
