ADUM1301ARWZ-RL7 - 3-Ch 2.5kV Digital Isolator | Analog Devices
MPN: ADUM1301ARWZ-RL7 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.25 | $3.25 |
| 10 | $2.95 | $29.50 |
| 100 | $2.75 | $275.00 |
| 500 | $2.55 | $1,275.00 |
| 1,000 | $2.35 | $2,350.00 |
Drop-in alternatives for ADUM1301ARWZ-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:
ADUM1301ARWZ
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View Datasheet →ADUM1301BRWZ
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ADUM1301CRWZ
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ADUM1300ARWZ
✅ Drop-In✓ In Stock
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View Datasheet →ISO7731DW
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Si8631BB-B-IS1
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ADUM1301ARWZ-RL7 Maximum Ratings & Electrical Characteristics
| Number of Channels | 3 |
| Isolation Voltage | 2500 Vrms |
| Data Rate | 1 Mbps |
| Common-Mode Transient Immunity (CMTI) | 25 kV/µs |
| Supply Voltage (VDD1/VDD2) | 2.7 V to 5.5 V |
| Propagation Delay | 100 ns (typical) |
| Pulse Width Distortion | 10 ns (typical) |
| Operating Temperature Range | -40°C to +105°C |
| Package | 16-SOIC (0.295", 7.50 mm Width) |
| Mounting Type | Surface Mount |
| Technology | iCoupler |
| Default Output State | High |
| RoHS Status | Compliant |
| UL Certification | UL 1577 |
| MSL Level | [DATA_NEEDED: MSL Level] |
ADUM1301ARWZ-RL7 Pin Configuration
| Pin 1 | VDD1 — Supply voltage for side 1 |
| Pin 2 | GND1 — Ground for side 1 |
| Pin 3 | VIA — Input channel A (side 1) |
| Pin 4 | VIB — Input channel B (side 1) |
| Pin 5 | VIC — Input channel C (side 1) |
| Pin 6 | GND1 — Ground for side 1 |
| Pin 7 | NC — No connect |
| Pin 8 | NC — No connect |
| Pin 9 | NC — No connect |
| Pin 10 | GND2 — Ground for side 2 |
| Pin 11 | VOA — Output channel A (side 2) |
| Pin 12 | VOB — Output channel B (side 2) |
| Pin 13 | VOC — Output channel C (side 2) |
| Pin 14 | GND2 — Ground for side 2 |
| Pin 15 | VDD2 — Supply voltage for side 2 |
| Pin 16 | NC — No connect |
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
ADUM1301ARWZ-RL7 is suitable for 6 applications: Industrial Fieldbus Communication, Isolated SPI/UART Interface, Motor Control and Inverter Drives, Power Supply Isolation, Medical Device Isolation, Communication Systems.
Industrial Fieldbus Communication
The ADUM1301ARWZ-RL7 provides galvanic isolation for fieldbus interfaces like RS-485 and CAN, protecting controllers from ground loops and high-voltage transients. Its 1 Mbps data rate is sufficient for most industrial protocols, and the 25 kV/µs CMTI ensures reliable operation in electrically noisy factory environments. The wide supply range (2.7V to 5.5V) allows direct interface with 3.3V or 5V logic, simplifying design. When placed between the transceiver and the controller, it isolates the communication lines while maintaining signal integrity, reducing the risk of damage from voltage spikes.
Recommended
Isolated SPI/UART Interface
The ADUM1301ARWZ-RL7 is ideal for isolating SPI or UART signals between microcontrollers and peripherals, such as ADCs, DACs, or sensors. Its three channels can carry SCLK, MOSI, and MISO, while the 1 Mbps data rate supports standard SPI speeds. The low propagation delay (100 ns) ensures minimal timing skew, and the high CMTI prevents data corruption in noisy environments. By isolating the digital interface, it protects sensitive logic from ground potential differences and reduces electromagnetic interference. The device's small SOIC-16 package makes it suitable for space-constrained designs.
Recommended
Motor Control and Inverter Drives
In motor control systems, the ADUM1301ARWZ-RL7 isolates gate driver signals and feedback paths, protecting the control circuitry from high-voltage transients and switching noise. Its 25 kV/µs CMTI is critical for maintaining signal integrity in the presence of fast-switching IGBTs or MOSFETs. The 1 Mbps data rate is adequate for PWM control signals, and the wide supply range allows interfacing with both 3.3V and 5V logic. The device's robust isolation (2.5 kVrms) ensures safety in industrial drives, while its low propagation delay supports real-time control loops. It is commonly used in variable frequency drives, servo drives, and robotics.
Recommended
Power Supply Isolation
The ADUM1301ARWZ-RL7 is used to isolate control signals in power supply designs, such as feedback loops and enable signals, providing safety isolation between primary and secondary sides. Its 2.5 kVrms isolation rating meets safety standards for many power applications. The 1 Mbps data rate is sufficient for control signals, and the high CMTI ensures reliable operation in the presence of switching noise. The device's low power consumption and wide supply range make it suitable for both AC-DC and DC-DC converters. By isolating the control circuitry, it improves system reliability and protects users from hazardous voltages.
Recommended
Medical Device Isolation
The ADUM1301ARWZ-RL7 provides galvanic isolation for medical devices, ensuring patient safety by isolating sensitive electronics from high voltages. Its 2.5 kVrms isolation rating meets common medical safety standards, and the low power consumption is ideal for battery-powered devices. The 1 Mbps data rate is sufficient for monitoring signals, and the high CMTI ensures reliable operation in the presence of electrosurgical equipment noise. The device's small package and wide temperature range make it suitable for portable and wearable medical devices. It is commonly used in patient monitors, infusion pumps, and diagnostic equipment.
Recommended
Communication Systems
The ADUM1301ARWZ-RL7 is used in communication systems to isolate digital interfaces, such as between a baseband processor and an RF transceiver, preventing ground loops and reducing noise. Its 1 Mbps data rate is suitable for control and status signals, while the high CMTI ensures reliable operation in RF environments. The device's low propagation delay and pulse width distortion maintain signal integrity, and the wide supply range allows interfacing with various logic levels. It is commonly used in base stations, routers, and network equipment. The isolation barrier protects sensitive components from voltage spikes and improves system reliability.
Recommended
Recommended Products Summary
Engineering reference data for ADUM1301ARWZ-RL7 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ADUM1301ARWZ | ADUM1301BRWZ | ADUM1301CRWZ | ISO7731DW |
|---|---|---|---|---|---|
| Package | 16-SOIC (0.295", 7.50 mm Width) | 16-SOIC (0.295", 7.50 mm Width) | 16-SOIC (0.295", 7.50 mm Width) | 16-SOIC (0.295", 7.50 mm Width) | 16-SOIC (0.295", 7.50 mm Width) |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Texas Instruments |
| Isolation Voltage | 2500 Vrms | 2500 Vrms | 2500 Vrms | 2500 Vrms | 2500 Vrms |
| Data Rate | 1 Mbps | 1 Mbps | 10 Mbps | 90 Mbps | 1 Mbps |
| CMTI | 25 kV/µs | 25 kV/µs | 25 kV/µs | 25 kV/µs | 100 kV/µs |
| Supply Voltage Range | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.25 V to 5.5 V |
| Propagation Delay | 100 ns (typical) | 100 ns (typical) | 50 ns (typical) | 32 ns (typical) | 11 ns (typical) |
| Operating Temperature | -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
- iCoupler technology provides superior reliability compared to optocouplers (vs Optocoupler-based isolators)
- High CMTI of 25 kV/µs ensures reliable operation in noisy environments (vs ISO7731DW (100 kV/µs))
- Wide supply voltage range (2.7V to 5.5V) enables voltage translation (vs ADUM1301BRWZ (10 Mbps))
Design Notes
Maintain proper creepage and clearance distances between the high-voltage and low-voltage sides of the PCB to meet safety standards. For 2.5 kVrms isolation, a minimum creepage of 4 mm is recommended for basic insulation, and 8 mm for reinforced insulation. Use a PCB material with adequate CTI (Comparative Tracking Index) and ensure the isolation barrier is free of copper traces or vias that could reduce isolation.
Place 0.1 µF decoupling capacitors close to the VDD1 and VDD2 pins on both sides of the isolator. Additionally, use a 10 µF bulk capacitor on each supply rail to handle transient currents. The supply voltage should be within the 2.7 V to 5.5 V range, and the power supply should be stable to ensure reliable operation.
Keep the traces between the isolator and the transceiver or controller as short as possible to minimize parasitic capacitance and inductance. Avoid routing high-speed signals near the isolation barrier. Use ground planes on both sides, but do not connect them across the barrier. This reduces noise coupling and improves CMTI performance.
Compliance Information
RoHS compliant per Analog Devices product page. No AEC-Q100 qualification for this part.
