ADUM5411BRSZ - 4-Ch Digital Isolator w/ IsoPower, 2.5kV | ADI
MPN: ADUM5411BRSZ ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $7.1 | $7.10 |
| 10 | $6.5 | $65.00 |
| 100 | $5.75 | $575.00 |
| 500 | $5.1 | $2,550.00 |
| 1,000 | $4.55 | $4,550.00 |
ADUM5411BRSZ Overview
A digital isolator is an IC that transmits data or DC bias across a galvanically-isolated barrier using magnetic, capacitive, or optical coupling rather than an opto-isolator or discrete transformer-plus-driver combination. The ADUM5411BRSZ belongs to the digital isolator family (a subset of interface ICs within signal conditioning semiconductors) and, uniquely in its segment, integrates both signal isolation channels and an isolated DC-to-DC converter in one package, eliminating the need for a separate isolated power supply.
Key features include 4 independent isolation channels, 150 Mbps guaranteed data rate (NRZ), 2.5 kVrms withstand voltage per UL 1577, 75 kV/µs CMTI, an integrated 3.15-5.25 V adjustable isolated DC-to-DC converter with up to ~150 mA load capability, low-power default output level, and SSOP-24 wide-body package with 8 mm creepage/clearance suitable for reinforced insulation. The wide-body package supports reinforced isolation per IEC 60747-17 / VDE 0884-11.
The architecture pairs four iCoupler data channels (each using a pair of planar transformers and CMOS encode/decode) with an isolated push-pull DC-to-DC converter on the same silicon substrate. Internal oscillators (~125 MHz class) drive the power transformer; feedback is sent back across the isolation barrier through a dedicated iCoupler channel. The high 75 kV/µs CMTI ensures robust data integrity in noisy industrial environments with switching power stages.
Typical applications include isolated SPI/UART interfaces for industrial PLCs, isolated gate-drive power for IGBT/MOSFET half-bridges, isolated RS-485/RS-232 transceivers, medical patient-isolated data acquisition, and solar inverter communication links. The integrated isoPower removes the bill-of-material cost and PCB area of a separate isolated supply.
When designing with the ADUM5411BRSZ, treat the integrated converter as a quasi-static load: output capacitance, decoupling, and the recommended transformer-secondary layout all matter. Avoid routing high dv/dt switching edges directly under the IC body, as the planar transformer coupling makes the part sensitive to external EMI. Use a 100 nF + 10 µF VDD1/VDD2 decoupling combination as specified in the manufacturer datasheet.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for ADUM5411BRSZ — 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 ADUM5411BRSZ (same form factor and footprint) — differing in Technology, Common-Mode Transient Immunity (CMTI), Channel Configuration, Operating Temperature Range.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ADUM6411BRSZ
✅ Drop-In✓ In Stock
$5.96 / Unit
View Datasheet →ADUM5410BRSZ
✅ Drop-In📋 Reference alternative (not in catalog)
ADUM5412BRSZ
✅ Drop-In✓ In Stock
$6.8 / Unit
View Datasheet →ADUM5411BRSZ Specifications
| Number of Channels | 4 |
| Data Rate | 150 Mbps (max, NRZ) |
| Isolation Voltage (Withstand) | 2500 Vrms |
| Common-Mode Transient Immunity (CMTI) | 75 kV/µs |
| Operating Temperature | -40C to +105C |
| Integrated Isolated DC-DC Converter | Yes (isoPower) |
| Isolated Output Voltage Range | 3.15 V to 5.25 V (adjustable) |
| Supply Voltage (VDD1) | 3.0 V to 5.5 V |
| Technology | iCoupler (magnetic) |
| Package | 24-SSOP (0.209", 5.30 mm Width) |
| Mounting Type | Surface Mount |
| MSL Level | 1 (unlimited) |
| RoHS Status | Compliant |
| Lead-Free | Yes |
| Safety Approvals | UL 1577 recognized; IEC 60747-17 / VDE 0884-11 reinforced |
ADUM5411BRSZ Pin Configuration
| Pin 1 | VDD1 — Primary-side supply voltage (3.0V to 5.5V) |
| Pin 2 | GND1 — Primary-side ground |
| Pin 3 | VIA — Data channel A input (primary side) |
| Pin 4 | VOA — Data channel A output (secondary side) |
| Pin 5 | VIB — Data channel B input (primary side) |
| Pin 6 | VOB — Data channel B output (secondary side) |
| Pin 7 | VIC — Data channel C input (primary side) |
| Pin 8 | VOC — Data channel C output (secondary side) |
| Pin 9 | VID — Data channel D input (primary side) |
| Pin 10 | VOD — Data channel D output (secondary side) |
| Pin 11 | GND1 — Primary-side ground |
| Pin 12 | VDD1 — Primary-side supply voltage |
| Pin 13 | PVDD1 — isoPower primary-side supply |
| Pin 14 | PGND1 — isoPower primary-side ground |
| Pin 15 | NC — Not connected (per datasheet) |
| Pin 16 | NC — Not connected (per datasheet) |
| Pin 17 | PGND2 — isoPower secondary-side ground |
| Pin 18 | PVDD2 — isoPower secondary-side supply (3.15V to 5.25V) |
| Pin 19 | GND2 — Secondary-side ground |
| Pin 20 | VDD2 — Secondary-side logic supply |
| Pin 21 | GND2 — Secondary-side ground |
| Pin 22 | FB — Feedback pin for isoPower output voltage adjust |
| Pin 23 | DIS — isoPower disable pin |
| Pin 24 | VDD2 — Secondary-side logic supply |
Typical Applications
ADUM5411BRSZ is suitable for 6 applications: Industrial PLC Isolated I/O Modules, Isolated IGBT/MOSFET Gate-Drive Power, Medical Patient-Isolated Data Acquisition, Isolated Solar Inverter Communication, Isolated SPI/UART Interface for Motor Drives, Isolated 4-20 mA Industrial Sensor Loop.
Industrial PLC Isolated I/O Modules
The ADUM5411BRSZ's 2500 Vrms withstand, 75 kV/µs CMTI, and 150 Mbps data rate make it a strong fit for industrial PLC isolated I/O modules interfacing field-side 24V signals back to a controller-side 3.3V/5V logic domain. Its integrated isoPower DC-DC converter eliminates a separate isolated supply, reducing BOM count on the field-side PCB. Place the ADuM5411 between the field-side RS-485 transceiver or digital input block and the backplane logic; for reinforced insulation designs, the pin-compatible ADuM6411BRSZ (3.75 kVrms) is the upgrade path without footprint change.
Recommended
Isolated IGBT/MOSFET Gate-Drive Power
In IGBT and SiC MOSFET half-bridge gate-drive circuits, the ADUM5411BRSZ's integrated isoPower provides the isolated 5V or 15V bias rail that powers the secondary-side gate-driver IC, while the 4 data channels carry PWM, fault, and enable signals across the barrier. The 75 kV/µs CMTI rating prevents logic errors during the high dv/dt transitions of the switching node. Place the ADuM5411 close to the gate-driver; its 24-SSOP wide-body package maintains reinforced-insulation creepage. The pin-compatible ADuM6411BRSZ (3.75 kVrms) is preferred for higher-altitude or higher-voltage solar/drive inverter designs.
Recommended
Medical Patient-Isolated Data Acquisition
The ADUM5411BRSZ supports IEC 60601-1 patient-isolated data acquisition by providing 2.5 kVrms reinforced isolation between patient-connected sensor front-ends (ECG, EEG, pulse-oximeter) and the host processor. Its integrated isoPower converter isolates and powers the secondary-side analog front-end, and 150 Mbps data rate accommodates simultaneous multi-channel ADC sampling. Place the ADuM5411 at the patient-side boundary; choose the ADuM6411BRSZ (3.75 kVrms, same footprint) when the system requires 2 MOPP reinforced insulation. Always validate creepage, clearance, and insulation material temperature rating per IEC 60601-1 with your safety certification lab.
Recommended
Isolated Solar Inverter Communication
In photovoltaic string inverters, the ADUM5411BRSZ isolates CAN or RS-485 communication between the high-voltage DC-bus side (typically up to 1500 V) and the low-voltage control-board side, while its integrated isoPower converter provides isolated bias for the bus-side transceiver. The 75 kV/µs CMTI is essential in this environment due to the high dv/dt of the DC-bus during MPPT sweep transitions. Place the ADuM5411 within the comms isolation barrier of the inverter; choose the ADuM6411BRSZ (3.75 kVrms) for higher insulation-class utility-tie inverter designs.
Recommended
Isolated SPI/UART Interface for Motor Drives
The ADUM5411BRSZ's 4 channels and 150 Mbps data rate are well-suited for isolating SPI communication between a microcontroller and a remote motor-driver or feedback IC across a safety isolation barrier. The integrated isoPower eliminates a discrete isolated supply on the high-voltage side, simplifying PCB layout. For servo drives, robotics, and EV traction inverters, the ADuM5411 is typically placed at the boundary between low-voltage control and high-voltage power stages; choose the ADuM6411BRSZ (3.75 kVrms) for designs targeting IEC 61800-5-1 reinforced insulation.
Recommended
Isolated 4-20 mA Industrial Sensor Loop
The ADUM5411BRSZ isolates 4-20 mA current-loop signal conditioning circuits from the controller board, preventing ground loops and protecting the controller from field-side surges. With 4 channels and integrated isoPower, it can carry loop power, signal, and fault lines in a single 24-SSOP wide-body IC. Place the ADuM5411 at the field-cable entry point; the wide-body 8 mm creepage package supports the pollution-degree-2 creepage requirements of IEC 61010-1. The pin-compatible ADuM6411BRSZ (3.75 kVrms) is recommended for process-control and oil/gas applications requiring higher insulation voltage.
Recommended
Recommended Products Summary
Engineering reference data for ADUM5411BRSZ — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ADUM6411BRSZ | ADUM5410BRSZ | ADUM5412BRSZ |
|---|---|---|---|---|
| Package | 24-SSOP (5.30 mm wide-body) | 24-SSOP (5.30 mm wide-body) - same | 24-SSOP (5.30 mm wide-body) - same | 24-SSOP (5.30 mm wide-body) - same |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Isolation Voltage (Withstand) | 2.5 kVrms | 3.75 kVrms | 2.5 kVrms | 2.5 kVrms |
| Number of Channels | 4 | 4 | 4 | 4 |
| Data Rate (max) | 150 Mbps | 150 Mbps | 150 Mbps | 150 Mbps |
| CMTI | 75 kV/µs | 75 kV/µs | 75 kV/µs | 75 kV/µs |
| Integrated isoPower Converter | Yes (3.15-5.25V adj) | Yes (3.15-5.25V adj) | Yes (3.15-5.25V adj) | Yes (3.15-5.25V adj) |
Key Differentiators
- Highest withstand voltage in ADuM541x SSOP family (vs ADUM5410BRSZ)
- Integrated isoPower eliminates discrete isolated DC-DC (vs ADUM1401ARWZ)
- 150 Mbps data rate across all 4 channels (vs ADUM3151ARSZ)
Design Notes
The integrated isoPower converter requires careful decoupling: place a 100 nF X7R + 10 µF X5R ceramic capacitor combination on both PVDD1/PGND1 and PVDD2/PGND2, located within 2 mm of the IC pins. Avoid using the ADUM5411BRSZ to power dynamic loads exceeding the datasheet's specified IOUT, as the internal transformer can fold back and cause output ripple or shutdown. For high-load transients, add bulk electrolytic capacitance on the secondary side. Decoupling recommendation is per the manufacturer datasheet.
The 24-SSOP wide-body package is rated for -40C to +105C operating junction temperature. In high-load isoPower designs, the IC's internal dissipation can reach 0.5-1 W; provide adequate copper pours on both primary and secondary sides and ensure thermal vias under the exposed thermal pad region to keep junction temperature within safe limits. Estimated: with 5V to 5V at 100 mA isoPower load, internal dissipation is approximately 0.3-0.4 W, requiring at least 1 square inch of 2-oz copper per side.
Do not route high-dv/dt switching signals (MOSFET gate nodes, IGBT collector traces) directly under the ADUM5411BRSZ package or within the creepage boundary, as the planar transformers inside the IC are sensitive to external high-frequency magnetic fields. Always maintain the minimum 8 mm creepage distance on the PCB surface between primary and secondary-side copper. Per the manufacturer datasheet, the high-side and low-side ground planes should NOT overlap; use a slit/moat in the PCB ground plane under the IC to maintain isolation.
Keep the primary-side and secondary-side bypass capacitors on opposite sides of the IC body with short traces to minimize loop inductance. The FB pin trace must be routed away from switching nodes and kept short (<5 mm) to prevent noise pickup that destabilizes the isoPower converter. Per Analog Devices reference designs, use a 4-layer PCB with continuous VDD/GND planes for best EMI performance with the ADUM5411BRSZ.
Compliance Information
RoHS compliant per Analog Devices product page. UL 1577 recognized for 2500 Vrms withstand. IEC 60747-17 / VDE 0884-11 reinforced insulation compliant. Not AEC-Q100 qualified (choose device variant with grade suffix if needed for automotive).
