ADUM5401ARWZ - Quad-Channel Digital Isolator with isoPower | Analog Devices
MPN: ADUM5401ARWZ ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $8.5 | $8.50 |
| 10 | $7.65 | $76.50 |
| 100 | $6.8 | $680.00 |
| 500 | $6.12 | $3,060.00 |
| 1,000 | $5.5 | $5,500.00 |
ADUM5401ARWZ Overview
A digital isolator is a component that provides galvanic isolation between two circuits while allowing digital signals to pass across the isolation barrier. It is used to protect sensitive electronics from high voltages, ground loops, and noise, and to ensure safety in applications where human contact is possible. Digital isolators are part of the broader category of isolation components, which also includes optocouplers and magnetic isolators. The ADUM5401ARWZ integrates the isolation barrier and a DC-to-DC converter, eliminating the need for a separate isolated power supply, which simplifies design and reduces board space.
Key features of the ADUM5401ARWZ include its integrated isoPower DC-to-DC converter, which provides up to 500 mW of isolated power, and its four isolation channels, which can be configured for various data directions. The device operates over a wide temperature range of -40°C to +105°C and is available in a 16-lead SOIC-W package. It is RoHS compliant and lead-free, making it suitable for environmentally conscious designs.
Technically, the ADUM5401ARWZ uses iCoupler technology, which employs chip-scale transformers to transmit data across the isolation barrier. This approach offers advantages over optocouplers, such as higher data rates, lower power consumption, and better reliability. The integrated DC-to-DC converter uses a push-pull topology to generate isolated power, and it requires only a few external components, such as a transformer and capacitors, to operate.
Typical applications for the ADUM5401ARWZ include isolated SPI interfaces, industrial field buses, motor control, and medical equipment. Its integrated power supply makes it ideal for applications where a separate isolated power supply is not available or would be too bulky. The device is also suitable for use in data acquisition systems, where it can isolate analog and digital sections.
When designing with the ADUM5401ARWZ, it is important to consider the power dissipation and thermal performance. The integrated DC-to-DC converter can generate heat, so adequate PCB copper area and thermal vias are recommended. Additionally, the input and output power supplies should be properly decoupled with capacitors to ensure stable operation.
Drop-in alternatives for ADUM5401ARWZ — 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 ADUM5401ARWZ (same form factor and footprint) — differing in Input Supply Voltage, Package, Data Rate, Number of Channels, Operating Temperature Range.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ADUM5401ARWZ-RL
✅ Drop-In📋 Reference alternative (not in catalog)
ADUM5402ARWZ
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$4.75 / Unit
View Datasheet →ADUM5403ARWZ
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$7.8 / Unit
View Datasheet →ADUM5404ARWZ
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$5.49 / Unit
View Datasheet →ISO7741DW
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
ADUM5401ARWZ Specifications
| Number of Channels | 4 |
| Isolation Voltage | 2500 Vrms |
| Data Rate | 1 Mbps |
| Common-Mode Transient Immunity (CMTI) | 25 kV/µs |
| Integrated DC-to-DC Converter | Yes, up to 500 mW |
| Input Supply Voltage | 5.0 V or 3.3 V |
| Output Supply Voltage | 5.0 V or 3.3 V (isolated) |
| Package | 16-SOIC (0.295", 7.50 mm Width) |
| Operating Temperature Range | -40°C to +105°C |
| RoHS Status | Compliant |
| Lead-Free | Yes |
| Mounting Type | Surface Mount |
| Technology | iCoupler |
ADUM5401ARWZ Pin Configuration
| Pin 1 | VDD1 — Input supply voltage (5.0 V or 3.3 V) |
| Pin 2 | GND1 — Input ground |
| Pin 3 | VIA — Input channel A |
| Pin 4 | VOA — Output channel A |
| Pin 5 | VIB — Input channel B |
| Pin 6 | VOB — Output channel B |
| Pin 7 | VIC — Input channel C |
| Pin 8 | VOC — Output channel C |
| Pin 9 | VID — Input channel D |
| Pin 10 | VOD — Output channel D |
| Pin 11 | GND2 — Isolated ground |
| Pin 12 | VDD2 — Isolated output supply voltage |
| Pin 13 | NC — No connect |
| Pin 14 | NC — No connect |
| Pin 15 | NC — No connect |
| Pin 16 | NC — No connect |
Typical Applications
ADUM5401ARWZ is suitable for 6 applications: Isolated SPI Interface, Industrial Field Bus, Motor Control, Medical Equipment, Data Acquisition Systems, Communication Systems.
Isolated SPI Interface
The ADUM5401ARWZ provides isolated SPI communication with integrated power, eliminating the need for a separate isolated supply. Its 1 Mbps data rate is sufficient for most SPI applications, and the 2500 Vrms isolation protects sensitive MCUs from high-voltage transients. The integrated DC-DC converter powers the isolated side, simplifying the design and reducing component count. This makes it ideal for industrial sensors, motor drives, and data acquisition systems where galvanic isolation is required for safety and noise immunity.
Recommended
Industrial Field Bus
In industrial field bus applications, the ADUM5401ARWZ isolates the controller from the bus transceiver, preventing ground loops and protecting against voltage spikes. Its 25 kV/µs CMTI ensures reliable operation in electrically noisy environments. The integrated DC-DC converter provides isolated power to the bus side, eliminating the need for an external isolated supply. This reduces board space and cost while improving reliability. The device's 1 Mbps data rate is adequate for many field bus protocols, such as RS-485 and CAN.
Recommended
Motor Control
The ADUM5401ARWZ is used in motor control systems to isolate the control signals from the high-voltage power stage. Its integrated DC-DC converter powers the gate driver side, simplifying the power supply design. The 2500 Vrms isolation protects the low-voltage controller from the high-voltage motor drive. The device's high CMTI ensures stable operation in the presence of fast switching transients. With a data rate of 1 Mbps, it can handle the PWM signals and feedback data required for motor control.
Recommended
Medical Equipment
In medical equipment, the ADUM5401ARWZ provides galvanic isolation to protect patients and operators from electrical hazards. Its 2500 Vrms isolation rating meets safety standards for many medical applications. The integrated DC-DC converter provides isolated power for sensors and signal conditioning circuits, reducing the risk of ground loops. The device's low power consumption and small footprint make it suitable for portable medical devices. The 1 Mbps data rate is sufficient for most medical monitoring and diagnostic equipment.
Recommended
Data Acquisition Systems
The ADUM5401ARWZ is ideal for data acquisition systems where analog and digital sections need to be isolated. It provides isolated power for the analog front-end, eliminating ground loops and improving measurement accuracy. The device's 1 Mbps data rate is sufficient for digitized sensor data. The integrated DC-DC converter simplifies the power supply design, reducing component count and board space. The 2500 Vrms isolation protects the digital side from high-voltage transients in the analog section.
Recommended
Communication Systems
In communication systems, the ADUM5401ARWZ isolates the digital control interface from the communication line, protecting against voltage spikes and ground potential differences. Its integrated DC-DC converter provides isolated power for the line driver or receiver, simplifying the design. The device's 1 Mbps data rate is suitable for many communication protocols, such as UART and SPI. The high CMTI ensures reliable operation in environments with electromagnetic interference. The 2500 Vrms isolation rating provides robust protection for sensitive communication equipment.
Recommended
Recommended Products Summary
Engineering reference data for ADUM5401ARWZ — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ADUM5401ARWZ-RL | ADUM5402ARWZ | ADUM5403ARWZ | ADUM5404ARWZ | ISO7741DW |
|---|---|---|---|---|---|---|
| Package | 16-SOIC (0.295", 7.50 mm Width) | 16-SOIC (0.295", 7.50 mm Width) - same | 16-SOIC (0.295", 7.50 mm Width) - same | 16-SOIC (0.295", 7.50 mm Width) - same | 16-SOIC (0.295", 7.50 mm Width) - same | 16-SOIC (0.295", 7.50 mm Width) - same |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Texas Instruments |
| Number of Channels | 4 | 4 | 4 | 4 | 4 | 4 |
| Isolation Voltage | 2500 Vrms | 2500 Vrms | 2500 Vrms | 2500 Vrms | 2500 Vrms | 5000 Vrms |
| Data Rate | 1 Mbps | 1 Mbps | 25 Mbps | 1 Mbps | 1 Mbps | 100 Mbps |
| Integrated DC-DC Converter | Yes (500 mW) | Yes (500 mW) | Yes (500 mW) | Yes (500 mW) | Yes (500 mW) | No |
| CMTI | 25 kV/µs | 25 kV/µs | 25 kV/µs | 25 kV/µs | 25 kV/µs | 100 kV/µs |
| Operating Temperature Range | -40°C to +105°C | -40°C to +105°C | -40°C to +105°C | -40°C to +105°C | -40°C to +105°C | -55°C to +125°C |
Key Differentiators
- Integrated DC-DC converter (vs ISO7741DW)
- Lower data rate but sufficient for many applications (vs ADUM5402ARWZ)
- Same package and pinout as other ADUM540x variants (vs ADUM5403ARWZ)
Design Notes
The integrated DC-DC converter requires careful PCB layout to minimize noise and ensure stable operation. Place the external transformer and capacitors close to the VDD1 and VDD2 pins. Use a solid ground plane for the input side and a separate ground plane for the isolated side, connected only at the device. Decouple VDD1 and VDD2 with 0.1 µF and 10 µF capacitors to filter high-frequency noise.
The ADUM5401ARWZ can dissipate significant power when delivering 500 mW of isolated power. Ensure adequate PCB copper area and thermal vias to dissipate heat. The thermal resistance from junction to ambient (θJA) is [DATA_NEEDED: θJA], so calculate the junction temperature rise based on your power dissipation and ambient temperature. For high ambient temperatures, consider derating the output power.
Do not exceed the absolute maximum ratings for VDD1 and VDD2. Ensure that the input and output grounds are properly isolated and do not have unintended connections. When using the integrated DC-DC converter, verify that the load does not exceed 500 mW, as this can cause the output voltage to drop. Also, ensure that the data lines are properly terminated to avoid signal integrity issues.
Compliance Information
RoHS compliant and lead-free per Analog Devices product page. AEC-Q100 not applicable for this non-automotive part.
