ADUM5402ARWZ - Quad-Channel Digital Isolator with isoPower | Analog Devices
MPN: ADUM5402ARWZ ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.96 | $6.96 |
| 10 | $6.5 | $65.00 |
| 100 | $5.8 | $580.00 |
| 500 | $5.2 | $2,600.00 |
| 1,000 | $4.75 | $4,750.00 |
ADUM5402ARWZ Overview
Digital isolators are components that transfer digital signals across an isolation barrier without a direct electrical connection, using capacitive or magnetic coupling. They are essential in applications requiring galvanic isolation for safety, noise immunity, or ground potential differences. The ADUM5402 belongs to the family of isolated interface ICs, which combine signal isolation with power transfer, enabling complete isolation of a subsystem without separate isolated power supplies.
Key features of the ADUM5402ARWZ include four independent isolation channels, an integrated DC-to-DC converter delivering up to 500 mW of regulated output power, and a wide supply voltage range of 3.0V to 5.5V on the primary side. The device uses Analog Devices' iCoupler technology, which provides superior performance compared to optocouplers, including higher data rates, lower power consumption, and better reliability.
The ADUM5402ARWZ is designed for applications requiring isolated power and data transfer, such as industrial field buses, isolated SPI/UART interfaces, and isolated sensor data acquisition. Its integrated DC-to-DC converter eliminates the need for a separate isolated power supply, simplifying board design and reducing component count. The device also features a soft-start function to limit inrush current during power-up.
Typical applications include isolated RS-485/RS-232 interfaces, isolated power supplies for data converters, and isolated communication in motor drives and power inverters. The ADUM5402ARWZ is also suitable for medical equipment requiring patient isolation, where its 2.5 kVrms isolation rating meets safety standards.
When designing with the ADUM5402ARWZ, it is important to ensure proper PCB layout to maintain isolation spacing and to place decoupling capacitors close to the power pins. The integrated DC-to-DC converter requires careful attention to the output capacitor selection to ensure stable operation.
Drop-in alternatives for ADUM5402ARWZ — 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 ADUM5402ARWZ (same form factor and footprint) — differing in Package, Input Supply Voltage, Data Rate, Integrated DC-DC Converter, Number of Channels.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ADUM5402CRWZ
✅ Drop-In📋 Reference alternative (not in catalog)
ADUM5401ARWZ
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$5.5 / 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 →ADUM5402ARWZ-RL
✅ Drop-In📋 Reference alternative (not in catalog)
ISO7742DW
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
ADUM5402ARWZ 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 Output Power | 500 mW |
| Supply Voltage (Primary Side) | 3.0 V to 5.5 V |
| Supply Voltage (Secondary Side) | 3.0 V to 5.5 V |
| Package | 16-SOIC (0.295", 7.50mm Width) |
| Mounting Type | Surface Mount |
| Operating Temperature Range | -40°C to +105°C |
| RoHS Status | Compliant |
| Technology | iCoupler |
| Number of Channels (Forward/Reverse) | 4/0 |
ADUM5402ARWZ Pin Configuration
| Pin 1 | VDD1 — Primary side supply voltage |
| Pin 2 | GND1 — Primary side ground |
| Pin 3 | VIA — Input channel A |
| Pin 4 | VIB — Input channel B |
| Pin 5 | VIC — Input channel C |
| Pin 6 | VID — Input channel D |
| Pin 7 | GND1 — Primary side ground |
| Pin 8 | NC — No connect |
| Pin 9 | VISO — Isolated output voltage |
| Pin 10 | GNDISO — Isolated ground |
| Pin 11 | VOA — Output channel A |
| Pin 12 | VOB — Output channel B |
| Pin 13 | VOC — Output channel C |
| Pin 14 | VOD — Output channel D |
| Pin 15 | GNDISO — Isolated ground |
| Pin 16 | VDD2 — Secondary side supply voltage |
Typical Applications
ADUM5402ARWZ is suitable for 6 applications: Industrial Field Bus Isolation, Isolated SPI Interface, Isolated Power Supply for Data Converters, Motor Drive and Power Inverter Isolation, Medical Equipment Patient Isolation, Isolated RS-232/RS-485 Communication.
Industrial Field Bus Isolation
The ADUM5402ARWZ provides galvanic isolation for industrial field buses such as RS-485 and CAN. Its 2500 Vrms isolation and 25 kV/µs CMTI ensure reliable data transfer in noisy environments. The integrated DC-to-DC converter powers the bus side, eliminating the need for a separate isolated supply. With 1 Mbps data rate, it supports standard field bus speeds. The quad-channel configuration allows isolation of data, clock, and control signals, simplifying system design.
Recommended
Isolated SPI Interface
The ADUM5402ARWZ is ideal for isolating SPI interfaces between microcontrollers and peripheral devices. Its four channels can isolate SCLK, MOSI, MISO, and CS signals. The integrated DC-to-DC converter provides isolated power to the peripheral side, enabling complete isolation. With 1 Mbps data rate, it is suitable for many SPI applications. The 2500 Vrms isolation protects sensitive electronics from ground loops and voltage spikes.
Recommended
Isolated Power Supply for Data Converters
The ADUM5402ARWZ can provide isolated power and data transfer for data converters in industrial and medical applications. Its integrated DC-to-DC converter delivers up to 500 mW, sufficient for many ADCs and DACs. The 2500 Vrms isolation ensures safety in medical devices. The 1 Mbps data rate is adequate for most converter interfaces. This simplifies the design by eliminating separate isolated power modules.
Recommended
Motor Drive and Power Inverter Isolation
In motor drives and power inverters, the ADUM5402ARWZ provides isolation between the control circuitry and the high-voltage power stage. Its high CMTI of 25 kV/µs ensures reliable operation in the presence of fast switching transients. The integrated DC-to-DC converter powers the gate driver side, simplifying the power supply design. The 2500 Vrms isolation protects the low-voltage control electronics from high-voltage transients.
Recommended
Medical Equipment Patient Isolation
The ADUM5402ARWZ is suitable for medical equipment requiring patient isolation, such as patient monitors and diagnostic devices. Its 2500 Vrms isolation rating meets safety standards for patient protection. The integrated DC-to-DC converter provides isolated power to the patient-side circuitry, reducing the risk of electric shock. The 1 Mbps data rate is sufficient for most medical sensor interfaces.
Recommended
Isolated RS-232/RS-485 Communication
The ADUM5402ARWZ can be used to isolate RS-232 or RS-485 communication lines in industrial and networking equipment. Its quad-channel configuration allows isolation of TX, RX, and control signals. The integrated DC-to-DC converter provides isolated power to the transceiver side, eliminating the need for a separate isolated supply. With 1 Mbps data rate, it supports standard serial communication speeds.
Recommended
Recommended Products Summary
Engineering reference data for ADUM5402ARWZ — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ADUM5402CRWZ | ADUM5401ARWZ | ADUM5403ARWZ | ADUM5404ARWZ | ADUM5402ARWZ-RL | ISO7742DW |
|---|---|---|---|---|---|---|---|
| Package | 16-SOIC (0.295", 7.50mm Width) | 16-SOIC (0.295", 7.50mm Width) - same | 16-SOIC (0.295", 7.50mm Width) - same | 16-SOIC (0.295", 7.50mm Width) - same | 16-SOIC (0.295", 7.50mm Width) - same | 16-SOIC (0.295", 7.50mm Width) - same | 16-SOIC (0.295", 7.50mm Width) - same |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Texas Instruments |
| Data Rate | 1 Mbps | 25 Mbps | 1 Mbps | 1 Mbps | 1 Mbps | 1 Mbps | 100 Mbps |
| Isolation Voltage | 2500 Vrms | 2500 Vrms | 2500 Vrms | 2500 Vrms | 2500 Vrms | 2500 Vrms | 5000 Vrms |
| Integrated DC-DC Converter | Yes (500 mW) | Yes (500 mW) | Yes (500 mW) | Yes (500 mW) | Yes (500 mW) | Yes (500 mW) | No |
| Number of Channels | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| CMTI | 25 kV/µs | 25 kV/µs | 25 kV/µs | 25 kV/µs | 25 kV/µs | 25 kV/µs | 100 kV/µs |
| Supply Voltage Range | 3.0V to 5.5V | 3.0V to 5.5V | 3.0V to 5.5V | 3.0V to 5.5V | 3.0V to 5.5V | 3.0V to 5.5V | 2.25V to 5.5V |
Key Differentiators
- Integrated DC-to-DC converter (vs ISO7742DW)
- Lower data rate but sufficient for many applications (vs ADUM5402CRWZ)
- Same package and pinout as higher-speed variants (vs ADUM5402CRWZ)
Design Notes
For the ADUM5402ARWZ, maintain proper creepage and clearance distances on the PCB to meet the 2500 Vrms isolation rating. Use a minimum of 8mm creepage and 8mm clearance between primary and secondary sides. Place the device with a slot or cutout under the package to enhance isolation. Ensure the PCB material has adequate insulation properties.
The integrated DC-to-DC converter requires a low-ESR output capacitor (typically 1µF to 10µF) on the VISO pin to ensure stable operation. The input supply should be decoupled with a 0.1µF capacitor close to the VDD1 pin. The total output power is limited to 500 mW; ensure the load does not exceed this to avoid thermal shutdown.
Keep the isolation barrier clear of any copper traces or components. The high CMTI of 25 kV/µs requires careful layout to avoid coupling of transients. Use a solid ground plane on each side of the isolation barrier, but do not connect them together. Place the device close to the board edge to facilitate isolation spacing.
Compliance Information
RoHS compliant per DigiKey and Mouser listings. No AEC-Q100 qualification indicated for this part.