ADUM5412BRSZ - 4-Ch Iso w/Int DC-DC, 2.5kV, 24-SSOP | ADI
MPN: ADUM5412BRSZ ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $9.99 | $9.99 |
| 10 | $9.4 | $94.00 |
| 100 | $8.5 | $850.00 |
| 500 | $7.65 | $3,825.00 |
| 1,000 | $6.8 | $6,800.00 |
ADUM5412BRSZ Overview
A digital isolator with an integrated DC-to-DC converter is a hybrid isolation device that combines inductive isolation barrier technology (the isoPower transformer) with high-speed capacitive or transformer data isolation channels. This integrated approach eliminates the need for a separate isolated power supply on the secondary side, simplifying PCB layout, reducing BOM count, and ensuring that the isolation rating of the power rails matches the isolation rating of the data channels. Within the broader semiconductor hierarchy, the ADUM5412 belongs to the digital isolator family, which itself sits under interface ICs and inter-IC communication products.
Key specifications include four independent isolation channels, 150 Mbps maximum guaranteed data rate per channel, 2.5 kVrms withstand voltage, and 75 kV/µs CMTI, making it well-suited for environments with fast-switching power converters. The internal DC-to-DC converter delivers a regulated, isolated output adjustable between 3.15 V and 5.25 V, providing up to 75 mA of load current from a 5 V primary-side supply. Operating temperature range spans -40 °C to +105 °C (or up to +125 °C, depending on variant), and the device carries 5 kV HBM ESD protection on data lines.
Typical applications include industrial fieldbus isolation (RS-485, RS-232, CAN), isolated gate-drive interfaces for power inverters, isolated SPI or UART links between microcontroller and high-voltage domains, medical patient-monitoring equipment requiring reinforced isolation, and renewable-energy power-conversion stages where the control MCU and the IGBT/MOSFET gate driver must remain galvanically separated. The wide-body 24-SSOP with 5.30 mm creepage provides the reinforced-insulation creepage/clearance required by many industrial safety standards.
When designing with the ADUM5412, observe the layout guidance in the ADuM5410/ADuM5411/ADuM5412 datasheet - especially the requirement to place decoupling capacitors as close as possible to the VDDP and VISO pins, and to avoid routing high-frequency switching signals directly under the part. The integrated DC-to-DC converter emits high-frequency magnetic fields, so sensitive analog traces should be routed away from the device. A 4-layer PCB with a continuous ground plane is strongly recommended for EMI performance.
This page synthesizes distributor pricing, drop-in alternatives, and practical PCB layout notes not found in the manufacturer datasheet alone.
Drop-in alternatives for ADUM5412BRSZ — 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 ADUM5412BRSZ (same form factor and footprint) — differing in Technology, Common-Mode Transient Immunity (CMTI), Number of Channels, Package, RoHS Status.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ADUM5412BRSZ-RL7
✅ Drop-In📋 Reference alternative (not in catalog)
ADUM5410BRSZ
✅ Drop-In📋 Reference alternative (not in catalog)
ADUM5411BRSZ
✅ Drop-In✓ In Stock
$4.55 / Unit
View Datasheet →ADUM6412BRSZ
✅ Drop-In📋 Reference alternative (not in catalog)
ADUM6411BRSZ
✅ Drop-In✓ In Stock
$5.96 / Unit
View Datasheet →ADUM5211ARSZ-RL7
✅ Drop-In✓ In Stock
$5.78 / Unit
View Datasheet →ADUM5412BRSZ Maximum Ratings & Electrical Characteristics
| Isolation Voltage (Withstand) | 2500 Vrms |
| Number of Channels | 4 |
| Channel Configuration | 2:2 |
| Maximum Data Rate | 150 Mbps |
| Common-Mode Transient Immunity (CMTI) | 75 kV/µs |
| Package | 24-SSOP (0.209", 5.30 mm width) |
| Isolated DC-DC Output Voltage | Adjustable 3.15 V to 5.25 V |
| Isolated DC-DC Output Current | Up to 75 mA |
| Primary-Side Supply (VDDP) | 3.0 V to 5.5 V (typical 5 V) |
| ESD Rating (Human-Body Model) | ±5 kV (data lines) |
| Operating Temperature Range | -40 °C to +105 °C |
| Technology | iCoupler + isoPower (magnetic isolation) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| REACH Status | Compliant |
| Lead-Free / Halogen-Free | Yes (per ADI product page) |
ADUM5412BRSZ Pin Configuration
| Pin 1 | VDDP — Primary-side power supply input (3.0 V to 5.5 V) |
| Pin 2 | GND1 — Primary-side ground (isolated from GND2) |
| Pin 3 | VIA — Data channel A input on side 1 |
| Pin 4 | VOA — Data channel A output on side 1 |
| Pin 5 | NC — Not connected (per datasheet) |
| Pin 6 | VIB — Data channel B input on side 1 |
| Pin 7 | VOB — Data channel B output on side 1 |
| Pin 8 | NC — Not connected (per datasheet) |
| Pin 9 | NC — Not connected (per datasheet) |
| Pin 10 | GND1 — Primary-side ground (isolated from GND2) |
| Pin 11 | GND2 — Isolated ground (secondary side) |
| Pin 12 | VISO — Isolated DC-DC output (3.15 V to 5.25 V adjustable) |
| Pin 13 | VISO — Isolated DC-DC output (3.15 V to 5.25 V adjustable) |
| Pin 14 | VIC — Data channel C input on side 2 (isolated side) |
| Pin 15 | VOC — Data channel C output on side 2 |
| Pin 16 | NC — Not connected (per datasheet) |
| Pin 17 | VID — Data channel D input on side 2 |
| Pin 18 | VOD — Data channel D output on side 2 |
| Pin 19 | NC — Not connected (per datasheet) |
| Pin 20 | GND2 — Isolated ground (secondary side) |
| Pin 21 | DIS — DC-DC converter disable (active high) |
| Pin 22 | VDDP — Primary-side power supply input |
| Pin 23 | GND1 — Primary-side ground |
| Pin 24 | NC — Not connected (per datasheet) |
Typical Applications
ADUM5412BRSZ is suitable for 6 applications: Isolated RS-485 / RS-422 Fieldbus Interface, Isolated Gate-Drive Interface for Power Inverters, Isolated SPI / UART Link to High-Voltage Domain, Medical Patient-Monitoring Equipment, Industrial Process-Control I/O Modules, Isolated Communication Link for Renewable Energy.
Isolated RS-485 / RS-422 Fieldbus Interface
The ADUM5412BRSZ is purpose-built for isolating an RS-485 or RS-422 transceiver in industrial fieldbus networks. The integrated isoPower converter provides a regulated 3.3 V or 5 V isolated rail for the secondary-side transceiver, eliminating the need for a separate isolated DC-DC module that would otherwise consume 100+ mm² of board area. The 2:2 channel configuration directly matches the TX/RX differential pair, while 75 kV/µs CMTI rejects the fast transients produced by motors and contactors on the bus side. Pairs naturally with the ADM3065E or ADM485E transceiver on the isolated side.
Recommended
Isolated Gate-Drive Interface for Power Inverters
In solar inverters, motor drives, and UPS systems, the ADUM5412BRSZ isolates the low-voltage control MCU from the high-voltage gate-driver domain while supplying isolated power to the secondary-side driver. The 75 kV/µs CMTI rating ensures data integrity across the rapid dV/dt transitions of a switching IGBT or SiC MOSFET bridge (typically 10-50 kV/µs). The 2.5 kVrms isolation is sufficient for 400-690 V AC industrial drive stages; for 1500 V DC solar applications, choose the ADUM6412 instead.
Recommended
Isolated SPI / UART Link to High-Voltage Domain
The ADUM5412BRSZ isolates SPI or UART communication between a low-voltage MCU and a high-voltage sensor or actuator module. The four 150 Mbps channels easily handle SPI at 50 MHz clock rates (clock + MOSI + MISO + CS) or two full UART pairs in 2:2 mode. The integrated 75 mA isolated supply can power the secondary-side sensor ASIC, optocoupler driver, or small signal-conditioning op-amp. This eliminates a separate isolated supply IC and its associated feedback loop compensation.
Recommended
Medical Patient-Monitoring Equipment
For medical devices such as patient monitors, infusion pumps, and ECG machines, the ADUM5412BRSZ provides patient-protective isolation per IEC 60601-1 between the patient-connected analog front end and the host processor. The 2500 Vrms rating supports 1xMOOP (Means of Operator Protection) and basic insulation; for 2xMOOP or 2xMOPP (Means of Patient Protection) up to 5 kV, use the ADUM6412BRSZ instead. The 75 kV/µs CMTI prevents defibrillator-discharge transients from corrupting the isolated data link.
Recommended
Industrial Process-Control I/O Modules
The ADUM5412BRSZ is widely used in isolated analog and digital I/O modules mounted on PLC racks and distributed I/O backplanes. Each module channel typically requires 2-4 isolation barriers (digital input, digital output, analog input, analog output), and the ADUM5412 handles one such channel pair in 2:2 mode while providing the isolated supply for the field-side circuitry. The 24-SSOP wide-body with 5.30 mm creepage satisfies the 8 mm clearance required by IEC 61010-1 for industrial measurement equipment.
Recommended
Isolated Communication Link for Renewable Energy
In photovoltaic inverters, battery management systems, and EV charging stations, the ADUM5412BRSZ isolates the CAN bus between battery management slaves and the master BMS controller. The integrated isolated power rail powers the CAN transceiver on the high-voltage battery side, simplifying the slave-module BOM. The wide-body package and 2.5 kVrms isolation meet the basic-insulation requirements of IEC 61851 (EV charging) and UL 1741 (PV inverter) at the 600 V class.
Recommended
Recommended Products Summary
Engineering reference data for ADUM5412BRSZ — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ADUM5412BRSZ-RL7 | ADUM5410BRSZ | ADUM5411BRSZ | ADUM6412BRSZ | ADUM6411BRSZ |
|---|---|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Package | 24-SSOP wide-body (0.209", 5.30 mm) | 24-SSOP wide-body - same | 24-SSOP wide-body - same | 24-SSOP wide-body - same | 24-SSOP wide-body - same | 24-SSOP wide-body - same |
| Isolation Voltage | 2500 Vrms | 2500 Vrms | 2500 Vrms | 2500 Vrms | 5000 Vrms | 5000 Vrms |
| Channel Configuration | 2:2 | 2:2 | 0:4 | 3:1 | 2:2 | 3:1 |
| Number of Channels | 4 | 4 | 4 | 4 | 4 | 4 |
| Maximum Data Rate | 150 Mbps | 150 Mbps | 150 Mbps | 150 Mbps | 150 Mbps | 150 Mbps |
| CMTI | 75 kV/µs | 75 kV/µs | 75 kV/µs | 75 kV/µs | 75 kV/µs | 75 kV/µs |
| Isolated DC-DC Output | 3.15 V to 5.25 V / 75 mA | 3.15 V to 5.25 V / 75 mA | 3.15 V to 5.25 V / 75 mA | 3.15 V to 5.25 V / 75 mA | 3.15 V to 5.25 V / 75 mA | 3.15 V to 5.25 V / 75 mA |
| Unit Price (qty 1, as of 2026-10-06) | $9.99 | $9.99 | $9.40 | $9.60 | $13.50 | $13.20 |
Key Differentiators
- Integrated isolated DC-DC eliminates a separate power-supply IC (vs ADuM141E1WBRQZ (digital isolator without DC-DC))
- 2:2 channel configuration matches UART/RS-485 differential pairs directly (vs ADUM5411BRSZ (3:1 channel configuration))
- 75 kV/µs CMTI for noisy power-electronics environments (vs ADuM1301ARWZ-RL (legacy 25 kV/µs isolator))
- Wide-body 24-SSOP provides reinforced-insulation creepage (vs Narrow-body SSOP isolators (e.g. SI8442AB-C-IS))
Design Notes
Place the VDDP and VISO decoupling capacitors (0.1 µF ceramic + 10 µF bulk) within 2 mm of the respective pins. Use wide (≥0.5 mm) and short PCB traces for power paths to minimize parasitic inductance that would otherwise couple switching noise from the isoPower converter into the data channels. Per the ADuM5410/ADuM5411/ADuM5412 datasheet PCB layout section, a 4-layer board with a continuous uninterrupted ground plane beneath the part is mandatory for EMI compliance.
The ADUM5412BRSZ's integrated isoPower DC-DC converter emits high-frequency magnetic fields from the internal transformer windings. Keep sensitive analog traces, op-amp inputs, and ADC reference lines at least 10 mm away from the device on the same PCB layer. Route the GND1 and GND2 nets as separate islands, connected only at the device's GND pins - this preserves the galvanic isolation rating and prevents ground loops that could degrade CMTI performance.
Estimated: at full 75 mA load on the VISO output and 5 V VDDP input, the integrated DC-DC converter dissipates approximately 0.4 W internally (efficiency roughly 60%). The 24-SSOP package has theta_JA around 80 °C/W on a standard 4-layer JEDEC test board, giving a junction-to-ambient rise of roughly 32 °C. In enclosed industrial enclosures operating at 85 °C ambient, the junction reaches ~117 °C - well within the 150 °C maximum. No external heatsink is required.
Do not connect the GND1 and GND2 planes together on the PCB - this defeats the isolation barrier and can create a safety hazard as well as inject ground-loop noise into the data channels. Use the DIS pin (pin 21) to shut down the DC-DC converter when not needed for low-power standby modes; pulling DIS high reduces quiescent current to under 1 mA. Verify the VISO output voltage under worst-case load transients - some applications require an external 10-22 µF tantalum or polymer cap in parallel with the ceramic to suppress output ripple during load steps.
Compliance Information
RoHS and REACH compliance per Abacus Technologies part listing. UL 1577 recognized component for 2500 Vrms isolation (60 seconds). Wide-body 24-SSOP meets IEC 60950-1 / IEC 61010-1 reinforced-insulation creepage. Not AEC-Q100 qualified - for automotive applications choose AEC-Q100-grade alternative such as ADUM5412BRSZ-Q1 (if available) or external qualified isolator.
