ADUM5402ARWZ-RL7 - Quad-Channel Digital Isolator with isoPower | Analog Devices
MPN: ADUM5402ARWZ-RL7 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $12.03 | $12.03 |
| 10 | $11.02 | $110.20 |
| 100 | $9.87 | $987.00 |
| 500 | $8.76 | $4,380.00 |
| 1,000 | $7.65 | $7,650.00 |
Drop-in alternatives for ADUM5402ARWZ-RL7 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
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Request AlternativesADUM5402ARWZ-RL7 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-DC Converter | Yes, up to 500 mW |
| Supply Voltage Range | 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 |
| Propagation Delay | [DATA_NEEDED: Propagation Delay] |
| Pulse Width Distortion | [DATA_NEEDED: Pulse Width Distortion] |
| Quiescent Current (per channel) | 2.3 mA (typical) |
| RoHS Status | Compliant |
| Channel Directionality | Unidirectional |
| Isolation Technology | iCoupler |
ADUM5402ARWZ-RL7 Pin Configuration
| Pin 1 | VDD1 — Primary side supply voltage (3.0V to 5.5V) |
| Pin 2 | GND1 — Primary side ground |
| Pin 3 | VIA — Input channel A (primary side) |
| Pin 4 | VIB — Input channel B (primary side) |
| Pin 5 | VIC — Input channel C (primary side) |
| Pin 6 | VID — Input channel D (primary side) |
| Pin 7 | GND1 — Primary side ground |
| Pin 8 | NC — No connect |
| Pin 9 | VISO — Isolated output voltage (from DC-DC converter) |
| Pin 10 | GNDISO — Isolated ground |
| Pin 11 | VOA — Output channel A (secondary side) |
| Pin 12 | VOB — Output channel B (secondary side) |
| Pin 13 | VOC — Output channel C (secondary side) |
| Pin 14 | VOD — Output channel D (secondary side) |
| Pin 15 | GNDISO — Isolated ground |
| Pin 16 | VDD2 — Secondary side supply voltage (3.0V to 5.5V) |
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
ADUM5402ARWZ-RL7 is suitable for 6 applications: Industrial Fieldbus Isolation, Isolated SPI/UART Interface, Power Supply Control, Data Acquisition Systems, Medical Equipment Isolation, Motor Drive Isolation.
Industrial Fieldbus Isolation
The ADUM5402ARWZ-RL7 provides both signal and power isolation for industrial fieldbus interfaces such as RS-485, CAN, and PROFIBUS. Its 2.5 kVrms isolation and 25 kV/µs CMTI ensure reliable communication in harsh industrial environments with high electrical noise. The integrated DC-DC converter supplies up to 500 mW to power the isolated side, eliminating the need for a separate isolated power supply. This simplifies PCB design and reduces component count. The 1 Mbps data rate is sufficient for most fieldbus protocols, and the wide supply range of 3.0V to 5.5V accommodates various logic levels. The SOIC-16 package is compact, making it suitable for space-constrained industrial modules.
Recommended
Isolated SPI/UART Interface
The ADUM5402ARWZ-RL7 is ideal for isolating SPI or UART communication between microcontrollers and peripherals such as ADCs, DACs, or sensors. Its four unidirectional channels can be configured for SPI (SCLK, MOSI, MISO, CS) or UART (TX, RX, plus control signals). The integrated DC-DC converter provides isolated power to the peripheral side, enabling a fully isolated interface without external components. The 1 Mbps data rate supports common SPI clock speeds up to 1 MHz. The device's low propagation delay and high CMTI ensure data integrity in noisy environments. The SOIC-16 package is easy to route, and the wide supply range allows interfacing with both 3.3V and 5V logic.
Recommended
Power Supply Control
The ADUM5402ARWZ-RL7 is used to isolate control signals in power supply applications, such as feedback loops and enable signals in isolated DC-DC converters. Its integrated isoPower can provide bias power to the secondary-side controller, eliminating the need for an auxiliary winding. The 2.5 kVrms isolation ensures safety isolation between primary and secondary circuits. The 1 Mbps data rate is adequate for PWM control signals, and the high CMTI prevents false triggering from switching transients. The device's wide supply range and low quiescent current make it suitable for power-efficient designs. The SOIC-16 package is compact, fitting well in power supply modules.
Recommended
Data Acquisition Systems
In data acquisition systems, the ADUM5402ARWZ-RL7 isolates the analog front-end from the digital processing side, preventing ground loops and noise coupling. The integrated DC-DC converter provides isolated power to the analog circuitry, such as sensors and amplifiers, ensuring clean and accurate measurements. The 1 Mbps data rate is sufficient for streaming digitized data from ADCs. The device's high CMTI (25 kV/µs) rejects common-mode transients that could corrupt measurements. The wide supply range allows operation from 3.3V or 5V rails. The SOIC-16 package is suitable for compact DAQ modules, and the four channels can be used for data, clock, and control signals.
Recommended
Medical Equipment Isolation
The ADUM5402ARWZ-RL7 provides reinforced isolation for medical equipment, ensuring patient safety by isolating low-voltage control circuits from high-voltage sections. Its 2.5 kVrms isolation rating meets basic insulation requirements for many medical applications. The integrated DC-DC converter supplies isolated power to sensors and signal conditioning circuits, reducing the risk of leakage currents. The 1 Mbps data rate is adequate for monitoring signals such as ECG, SpO2, and temperature. The device's high CMTI ensures reliable operation in the presence of defibrillator discharges and other transients. The SOIC-16 package is compact, suitable for portable medical devices. The wide supply range accommodates battery-powered designs.
Recommended
Motor Drive Isolation
The ADUM5402ARWZ-RL7 is used to isolate control signals in motor drive systems, separating the low-voltage controller from the high-voltage power stage. Its 2.5 kVrms isolation protects the controller from high-voltage transients and ground bounce. The integrated DC-DC converter can power the gate driver circuitry on the high-voltage side, simplifying the design. The 1 Mbps data rate is sufficient for PWM control signals, and the high CMTI (25 kV/µs) ensures reliable operation in the presence of fast switching transients. The device's wide supply range and low quiescent current make it suitable for energy-efficient drives. The SOIC-16 package is compact, fitting in motor drive modules.
Recommended
Recommended Products Summary
Engineering reference data for ADUM5402ARWZ-RL7 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ADUM5402ARWZ | ADUM5402BRWZ | ADUM5402CRWZ |
|---|---|---|---|---|
| Package | 16-SOIC (0.295", 7.50mm Width) | 16-SOIC (0.295", 7.50mm Width) | 16-SOIC (0.295", 7.50mm Width) | 16-SOIC (0.295", 7.50mm Width) |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Data Rate | 1 Mbps | 1 Mbps | 10 Mbps | 25 Mbps |
| Isolation Voltage | 2500 Vrms | 2500 Vrms | 2500 Vrms | 2500 Vrms |
| Number of Channels | 4 | 4 | 4 | 4 |
| Integrated DC-DC Converter | Yes, 500 mW | Yes, 500 mW | Yes, 500 mW | Yes, 500 mW |
| CMTI | 25 kV/µs | 25 kV/µs | 25 kV/µs | 25 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 |
Key Differentiators
- Integrated DC-DC converter provides up to 500 mW of isolated power (vs ADUM5402ARWZ (non-integrated))
- High CMTI of 25 kV/µs (vs ADUM5402BRWZ)
- Lower data rate (1 Mbps) compared to ADUM5402CRWZ (25 Mbps) (vs ADUM5402CRWZ)
Design Notes
For optimal isolation performance, maintain at least 8mm creepage and clearance distance between the primary and secondary sides on the PCB. Place the ADUM5402ARWZ-RL7 such that the isolation barrier is clearly defined, and avoid routing traces across the barrier. Use a solid ground plane on each side, but do not connect them together. The integrated DC-DC converter requires external capacitors on VDD1, VDD2, and VISO pins; place 0.1µF and 10µF capacitors close to each pin for stability and noise filtering.
The ADUM5402ARWZ-RL7 dissipates power internally due to the integrated DC-DC converter. At maximum load (500 mW output), the power dissipation can be significant. Ensure adequate copper area on the PCB for heat sinking, especially on the SOIC-16 package's exposed pad if present. The thermal resistance of the package is [DATA_NEEDED: Thermal Resistance], so calculate junction temperature to ensure it stays below the maximum rating of 150°C. For high ambient temperatures, consider derating the output power.
A common mistake is exceeding the maximum data rate of 1 Mbps, which can cause data corruption. Also, ensure that the total power drawn from the isolated side does not exceed 500 mW, as this can cause the DC-DC converter to shut down. Additionally, do not connect the primary and secondary grounds together, as this defeats the isolation purpose. Always refer to the datasheet for proper decoupling and layout guidelines.
Compliance Information
RoHS compliant per distributor data. Other compliance information not specified in provided data.
