ADUM5403ARWZ-RL7 - Quad-Channel Digital Isolator with isoPower | Analog Devices
MPN: ADUM5403ARWZ-RL7 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $10.75 | $10.75 |
| 10 | $9.68 | $96.80 |
| 100 | $8.6 | $860.00 |
| 500 | $7.53 | $3,765.00 |
| 1,000 | $6.45 | $6,450.00 |
Drop-in alternatives for ADUM5403ARWZ-RL7 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ADUM5403ARWZ
✅ Drop-In✓ In Stock
$7.8 / Unit
View Datasheet →ADUM5403CRWZ
✅ Drop-In📋 Reference alternative (not in catalog)
ADUM5403WCRWZ
✅ Drop-In📋 Reference alternative (not in catalog)
ADUM5401ARWZ
✅ Drop-In✓ In Stock
$5.5 / Unit
View Datasheet →ADUM5402ARWZ
✅ Drop-In✓ In Stock
$4.75 / Unit
View Datasheet →ISO7742DW
✅ Drop-In📋 Reference alternative (not in catalog)
ADUM5403ARWZ-RL7 Maximum Ratings & Electrical Characteristics
| Number of Channels | 4 |
| Isolation Voltage | 2500 Vrms |
| Data Rate | 25 Mbps (NRZ) |
| Common-Mode Transient Immunity | >25 kV/µs |
| Integrated DC-to-DC Converter | Yes (isoPower) |
| Output Power | 500 mW |
| Output Voltage (VISO) | 3.3 V or 5.0 V |
| Input Supply Voltage | 3.0 V to 5.5 V |
| Package | 16-SOIC (0.295", 7.50mm Width) |
| Creepage Distance | 7.6 mm |
| Operating Temperature Range | -40°C to +105°C |
| Propagation Delay | [DATA_NEEDED: propagation delay] |
| Pulse Width Distortion | [DATA_NEEDED: pulse width distortion] |
| RoHS Status | Compliant |
| Mounting Type | Surface Mount |
ADUM5403ARWZ-RL7 Pin Configuration
| Pin 1 | VDD1 — Input supply voltage (3.0V to 5.5V) |
| Pin 2 | GND1 — Input 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 | VE1 — Enable input 1 |
| Pin 8 | VE2 — Enable input 2 |
| Pin 9 | GNDISO — Isolated ground |
| Pin 10 | VISO — Isolated output voltage (3.3V or 5.0V) |
| 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 | GND1 — Input ground (second pin) |
| Pin 16 | VDD1 — Input supply voltage (second pin) |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this digital IC. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
ADUM5403ARWZ-RL7 is suitable for 6 applications: Industrial Fieldbus Isolation, Isolated SPI/UART Communication, Motor Control and Drive Isolation, Isolated Power Supply Control, Medical Equipment Patient Isolation, Isolated Sensor Interface.
Industrial Fieldbus Isolation
The ADUM5403ARWZ-RL7 provides galvanic isolation for industrial fieldbus interfaces such as RS-485, CAN, and Profibus. Its integrated isoPower eliminates the need for a separate isolated DC-DC converter, simplifying the BOM and reducing board space. With a data rate of 25 Mbps and CMTI of >25 kV/µs, it ensures reliable communication in noisy industrial environments. The 2.5 kVrms isolation protects against ground loops and voltage transients, while the 500 mW output power can supply the transceiver and other circuitry on the isolated side. This makes it ideal for PLCs, motor drives, and factory automation systems where robust isolation is critical.
Recommended
Isolated SPI/UART Communication
The ADUM5403ARWZ-RL7 is well-suited for isolating SPI or UART interfaces between microcontrollers and peripheral devices. Its four channels can be configured as 2 forward and 2 reverse, supporting full-duplex communication. The integrated DC-DC converter provides isolated power to the peripheral, eliminating the need for an external isolated supply. With 25 Mbps data rate, it easily handles high-speed SPI clocks. The device's low propagation delay and high CMTI ensure data integrity in electrically noisy environments. This application is common in data acquisition systems, isolated sensor interfaces, and medical devices where patient isolation is required.
Recommended
Motor Control and Drive Isolation
In motor control applications, the ADUM5403ARWZ-RL7 isolates the control circuitry from the high-voltage power stage. Its integrated isoPower provides a clean, isolated supply for gate drivers and current sensing circuits. The high CMTI of >25 kV/µs ensures that fast switching transients from the inverter do not corrupt the control signals. The 2.5 kVrms isolation rating meets safety requirements for industrial drives. The device's 500 mW output power is sufficient for gate driver ICs and auxiliary circuits. This simplifies the design of variable frequency drives, servo drives, and robotics, reducing component count and improving reliability.
Recommended
Isolated Power Supply Control
The ADUM5403ARWZ-RL7 can be used to isolate the feedback and control signals in switch-mode power supplies. Its integrated isoPower can provide the bias supply for the secondary-side controller, eliminating the need for a separate auxiliary winding. The four channels allow for both forward and reverse communication, enabling synchronous rectification and voltage/current feedback. The high data rate supports fast control loops, while the isolation ensures safety between primary and secondary sides. This application is common in AC-DC adapters, isolated DC-DC converters, and battery chargers. The device's 500 mW output power is adequate for most secondary-side control ICs.
Recommended
Medical Equipment Patient Isolation
The ADUM5403ARWZ-RL7 is ideal for medical devices requiring patient isolation, such as ECG monitors, patient monitors, and infusion pumps. Its 2.5 kVrms isolation rating meets IEC 60601-1 requirements for basic isolation. The integrated isoPower provides isolated power to the patient-side circuitry, reducing leakage current and improving safety. The device's low power consumption and small footprint make it suitable for portable medical devices. The high CMTI ensures reliable operation in the presence of defibrillator pulses and other transients. This simplifies the design of isolated data acquisition and communication interfaces in medical equipment.
Recommended
Isolated Sensor Interface
The ADUM5403ARWZ-RL7 provides a complete isolated interface for sensors such as temperature, pressure, and flow sensors. Its integrated isoPower supplies the sensor and signal conditioning circuitry on the isolated side, eliminating the need for a separate isolated supply. The four channels can be used for data, clock, and control signals, supporting various sensor protocols. The high data rate and low propagation delay ensure accurate real-time data transmission. The device's small package and high reliability make it suitable for industrial process control and remote monitoring systems. This simplifies the design of isolated sensor nodes in factory automation and building automation.
Recommended
Recommended Products Summary
Engineering reference data for ADUM5403ARWZ-RL7 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ADUM5403ARWZ | ADUM5403CRWZ | ADUM5403WCRWZ | ADUM5401ARWZ | ADUM5402ARWZ | ISO7742DW |
|---|---|---|---|---|---|---|---|
| Package | 16-SOIC | 16-SOIC | 16-SOIC | 16-SOIC | 16-SOIC | 16-SOIC | 16-SOIC |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Texas Instruments |
| Isolation Voltage | 2500 Vrms | 2500 Vrms | 2500 Vrms | 2500 Vrms | 2500 Vrms | 2500 Vrms | 5000 Vrms |
| Data Rate | 25 Mbps | 25 Mbps | 25 Mbps | 25 Mbps | 25 Mbps | 25 Mbps | 100 Mbps |
| Integrated DC-DC Converter | Yes (500 mW) | Yes (500 mW) | Yes (500 mW) | Yes (500 mW) | Yes (500 mW) | Yes (500 mW) | No |
| Channel Configuration | 2 forward, 2 reverse | 2 forward, 2 reverse | 2 forward, 2 reverse | 2 forward, 2 reverse | 3 forward, 1 reverse | 2 forward, 2 reverse | 2 forward, 2 reverse |
| Operating Temperature Range | -40°C to +105°C | -40°C to +105°C | -40°C to +125°C | -40°C to +125°C | -40°C to +105°C | -40°C to +105°C | -55°C to +125°C |
| Automotive Grade | No | No | No | Yes (AEC-Q100) | No | No | No |
Key Differentiators
- Integrated isoPower DC-DC converter (vs ISO7742DW)
- High common-mode transient immunity (vs ISO7742DW)
- Multiple temperature and grade options (vs ADUM5403ARWZ)
Design Notes
The integrated isoPower DC-DC converter requires careful decoupling. Place a 0.1 µF ceramic capacitor close to VDD1 and GND1, and a 1 µF capacitor on VISO and GNDISO. The datasheet recommends a minimum load of 10% of the rated output power to maintain regulation. Ensure the input supply can provide sufficient current for both the logic and the converter (up to 500 mW output).
Maintain adequate creepage and clearance distances on the PCB to meet the isolation rating. The 16-SOIC package has 7.6 mm creepage, but the PCB layout must also provide at least 7.6 mm spacing between the input and output side copper. Use a slot or cutout under the device to increase the creepage path if needed. Follow the layout guidelines in the ADI datasheet for optimal isolation performance.
The ADUM5403ARWZ-RL7 can dissipate up to 1 W when delivering 500 mW at high ambient temperatures. The 16-SOIC package has a thermal resistance of approximately 80°C/W (theta_JA). At 105°C ambient, the junction temperature could reach 185°C, exceeding the maximum rating. Ensure adequate airflow or a thermal pad on the PCB to keep the junction temperature within limits. Derate the output power at high temperatures.
Compliance Information
RoHS compliant per ADI product page. Not AEC-Q100 qualified for base part; automotive grade available as ADUM5403WCRWZ.
