ADUM5403ARWZ - Quad-Channel Digital Isolator with isoPower | Analog Devices
MPN: ADUM5403ARWZ ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $11.06 | $11.06 |
| 10 | $10.2 | $102.00 |
| 100 | $9.35 | $935.00 |
| 500 | $8.5 | $4,250.00 |
| 1,000 | $7.8 | $7,800.00 |
Drop-in alternatives for ADUM5403ARWZ — 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-RL
✅ 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 →ADUM5404ARWZ
✅ Drop-In✓ In Stock
$5.49 / Unit
View Datasheet →ISO7742FDBQR
✅ Drop-In✓ In Stock
$2.19 / Unit
View Datasheet →ADUM5403ARWZ Maximum Ratings & Electrical Characteristics
| 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 |
| Output Voltage (isoPower) | 5V or 3.3V |
| Input Supply Voltage | 5V or 3.3V |
| Package | 16-SOIC (0.295", 7.50mm Width) |
| Operating Temperature Range | -40°C to +105°C |
| Propagation Delay | [DATA_NEEDED: Propagation delay] |
| Pulse Width Distortion | [DATA_NEEDED: Pulse width distortion] |
| Power Dissipation | [DATA_NEEDED: Power dissipation] |
| RoHS Status | Compliant |
| Mounting Type | Surface Mount |
| Technology | iCoupler |
ADUM5403ARWZ Pin Configuration
| Pin 1 | VDD1 — Input supply voltage (3.3V or 5V) |
| Pin 2 | GND1 — Ground for input side |
| Pin 3 | VIA — Data input channel A |
| Pin 4 | VIB — Data input channel B |
| Pin 5 | VIC — Data input channel C |
| Pin 6 | VID — Data input channel D |
| Pin 7 | GND1 — Ground for input side |
| Pin 8 | NC — No connect |
| Pin 9 | VISO — Isolated output voltage (3.3V or 5V) |
| Pin 10 | GNDISO — Ground for isolated side |
| Pin 11 | VOA — Data output channel A |
| Pin 12 | VOB — Data output channel B |
| Pin 13 | VOC — Data output channel C |
| Pin 14 | VOD — Data output channel D |
| Pin 15 | GNDISO — Ground for isolated side |
| Pin 16 | VDD1 — Input supply voltage (3.3V or 5V) |
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 is suitable for 6 applications: Industrial Field Bus Isolation, Isolated SPI/UART Interface, Motor Control, Power Supply Monitoring, Medical Equipment Isolation, Isolated Sensor Interface.
Industrial Field Bus Isolation
The ADUM5403ARWZ provides galvanic isolation for industrial field buses such as RS-485, CAN, and Profibus. Its 2500 Vrms isolation and 25 kV/µs CMTI ensure reliable data transmission in noisy factory environments. The integrated DC-to-DC converter supplies isolated power to the bus transceiver, eliminating the need for a separate isolated power supply. This simplifies PCB design and reduces component count, making it ideal for space-constrained industrial modules. The 1 Mbps data rate is sufficient for most field bus protocols, and the wide temperature range supports harsh operating conditions.
Recommended
Isolated SPI/UART Interface
The ADUM5403ARWZ is ideal for isolating SPI or UART interfaces between microcontrollers and peripherals. Its four forward channels can carry SCLK, MOSI, MISO, and CS signals, while the integrated DC-to-DC converter powers the isolated side. The 1 Mbps data rate supports standard SPI and UART speeds, and the 2500 Vrms isolation protects sensitive logic from ground potential differences. The device's low propagation delay ensures minimal signal skew, maintaining data integrity. This application is common in motor drives, power converters, and medical devices where isolation is critical for safety.
Recommended
Motor Control
In motor control systems, the ADUM5403ARWZ isolates the control circuitry from the high-voltage power stage. Its 2500 Vrms isolation protects the microcontroller from voltage transients and ground bounce. The integrated DC-to-DC converter provides isolated power for gate drivers or current sensors, reducing external components. The 25 kV/µs CMTI ensures reliable operation in the presence of fast-switching power devices. The 1 Mbps data rate is adequate for PWM control signals and feedback. This device is suitable for industrial motor drives, robotics, and automotive applications.
Recommended
Power Supply Monitoring
The ADUM5403ARWZ is used to isolate monitoring circuits in power supplies, allowing safe measurement of voltages and currents on the high-voltage side. Its integrated DC-to-DC converter powers the monitoring ICs, eliminating the need for an isolated bias supply. The 2500 Vrms isolation ensures operator safety and protects low-voltage control electronics. The 1 Mbps data rate is sufficient for telemetry and status signals. The device's small SOIC-16 package fits compact power modules. This application is common in server power supplies, industrial power systems, and battery management systems.
Recommended
Medical Equipment Isolation
The ADUM5403ARWZ provides galvanic isolation in medical devices to protect patients and operators from electric shock. Its 2500 Vrms isolation meets safety standards for patient-connected equipment. The integrated DC-to-DC converter supplies isolated power to sensors and signal conditioning circuits, simplifying design. The 1 Mbps data rate supports biosignal acquisition and control signals. The device's low power consumption and small footprint are ideal for portable medical devices. This application includes patient monitors, infusion pumps, and diagnostic equipment.
Recommended
Isolated Sensor Interface
The ADUM5403ARWZ is used to interface sensors to a controller while providing galvanic isolation. Its four channels can carry sensor data, clock, and control signals. The integrated DC-to-DC converter powers the sensor side, eliminating the need for an isolated supply. The 2500 Vrms isolation prevents ground loops and noise coupling, improving measurement accuracy. The 1 Mbps data rate supports high-speed sensors such as encoders and temperature probes. The device's robust CMTI ensures reliable operation in industrial environments. This application is common in factory automation and process control.
Recommended
Recommended Products Summary
Engineering reference data for ADUM5403ARWZ — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ADUM5403ARWZ-RL | ADUM5401ARWZ | ADUM5402ARWZ | ADUM5404ARWZ | ISO7742FDBQR |
|---|---|---|---|---|---|---|
| Package | 16-SOIC (0.295", 7.50mm Width) | 16-SOIC (same) | 16-SOIC (same) | 16-SOIC (same) | 16-SOIC (same) | 16-SOIC (same) |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Texas Instruments |
| Isolation Voltage | 2500 Vrms | 2500 Vrms | 2500 Vrms | 2500 Vrms | 2500 Vrms | 5000 Vrms |
| Data Rate | 1 Mbps | 1 Mbps | 1 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 |
| Channel Configuration | 4 forward | 4 forward | 3 forward, 1 reverse | 2 forward, 2 reverse | 4 reverse | 4 forward |
| CMTI | 25 kV/µs | 25 kV/µs | 25 kV/µs | 25 kV/µs | 25 kV/µs | 100 kV/µs |
| Operating Temperature | -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-to-DC converter (vs ISO7742FDBQR)
- Lower data rate but sufficient for many applications (vs ISO7742FDBQR)
- Multiple channel configurations in same family (vs ADUM5401ARWZ)
Design Notes
For optimal isolation performance, maintain at least 8 mm creepage and clearance distance between the input and output sides of the ADUM5403ARWZ on the PCB. Use a solid ground plane under the device and avoid routing high-voltage traces near the isolation barrier. Follow the layout guidelines in the datasheet to ensure the isolation rating is met.
The integrated DC-to-DC converter can deliver up to 500 mW of isolated power. Ensure the input supply can handle the total power consumption, including the load on the isolated side. Use low-ESR ceramic capacitors (e.g., 0.1 µF and 10 µF) on both VDD1 and VISO pins to stabilize the converter and reduce ripple.
Do not exceed the absolute maximum ratings for supply voltage or output current. The ADUM5403ARWZ is not intended for use as a general-purpose power supply; the isolated power is limited to 500 mW. Ensure the total load on VISO does not exceed this limit to avoid thermal shutdown or damage.
Compliance Information
RoHS compliant per distributor listings. Other compliance data not explicitly stated in the provided data.
