ADUM1401ARWZ - Quad-Channel Digital Isolator | Analog Devices
MPN: ADUM1401ARWZ β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.42 | $3.42 |
| 10 | $3.08 | $30.80 |
| 100 | $2.74 | $274.00 |
| 500 | $2.47 | $1,235.00 |
| 1,000 | $2.19 | $2,190.00 |
Drop-in alternatives for ADUM1401ARWZ β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
ADUM1401BRWZ
β Drop-Inπ Reference alternative (not in catalog)
ADUM1401CRWZ
β Drop-Inπ Reference alternative (not in catalog)
ADUM1401ARWZ-RL
β Drop-Inπ Reference alternative (not in catalog)
ADUM1401ARW
β Drop-Inπ Reference alternative (not in catalog)
ISO7241CDWR
β Drop-Inπ Reference alternative (not in catalog)
ADUM1401ARWZ Maximum Ratings & Electrical Characteristics
| Number of Channels | 4 |
| Channel Directionality | 3/1 (3 forward, 1 reverse) |
| Isolation Voltage | 2500 Vrms |
| Data Rate | 1 Mbps |
| CMTI | 25 kV/Β΅s |
| Propagation Delay | 100 ns (typical) |
| Supply Voltage | 2.7 V to 5.5 V |
| Power Consumption (5V, 2 Mbps) | 1.0 mA per channel max |
| Power Consumption (5V, 10 Mbps) | 3.5 mA per channel max |
| Power Consumption (5V, 100 Mbps) | 31 mA per channel max |
| Operating Temperature | -40Β°C to +105Β°C |
| Package | 16-SOIC (0.295", 7.50mm Width) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Default Output State | High |
ADUM1401ARWZ Pin Configuration
| Pin 1 | VDD1 β Supply voltage, side 1 |
| Pin 2 | GND1 β Ground, side 1 |
| Pin 3 | VIA β Input channel A |
| Pin 4 | VIB β Input channel B |
| Pin 5 | VIC β Input channel C |
| Pin 6 | VOD β Output channel D |
| Pin 7 | GND1 β Ground, side 1 |
| Pin 8 | NC β No connect |
| Pin 9 | NC β No connect |
| Pin 10 | GND2 β Ground, side 2 |
| Pin 11 | VOA β Output channel A |
| Pin 12 | VOB β Output channel B |
| Pin 13 | VOC β Output channel C |
| Pin 14 | VID β Input channel D |
| Pin 15 | GND2 β Ground, side 2 |
| Pin 16 | VDD2 β Supply voltage, side 2 |
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
ADUM1401ARWZ is suitable for 6 applications: Industrial Field Bus Isolation, SPI Isolation, Motor Control, Power Supply Isolation, Medical Equipment Isolation, Isolated Data Acquisition.
Industrial Field Bus Isolation
The ADUM1401ARWZ provides galvanic isolation for industrial field buses like RS-485 and CAN. Its 2500 Vrms isolation and 25 kV/Β΅s CMTI ensure reliable communication in noisy factory environments. The 1 Mbps data rate is sufficient for most field bus protocols, and the low power consumption reduces heat in control cabinets. The 3/1 channel directionality matches typical bus transceiver configurations, with three channels for data and one for control signals. This isolator eliminates ground loops and protects sensitive microcontrollers from voltage transients, improving system reliability.
Recommended
SPI Isolation
The ADUM1401ARWZ is ideal for isolating SPI buses between microcontrollers and peripheral devices. With four channels, it can isolate MOSI, MISO, SCK, and SS signals in a single package. The 1 Mbps data rate is adequate for many SPI applications, and the 100 ns propagation delay is acceptable for moderate clock speeds. The 3/1 directionality matches the typical SPI configuration with three forward signals (MOSI, SCK, SS) and one reverse (MISO). This isolation protects sensitive logic from high-voltage transients and reduces noise coupling in industrial and medical systems.
Recommended
Motor Control
In motor control applications, the ADUM1401ARWZ isolates the microcontroller from the high-voltage power stage. Its 2500 Vrms isolation protects the control circuitry from motor transients, and the 25 kV/Β΅s CMTI ensures reliable operation in the presence of fast switching noise. The 1 Mbps data rate is sufficient for PWM control signals, and the low propagation delay (100 ns) minimizes timing errors. The 3/1 channel directionality can be used for three PWM signals and one feedback signal, simplifying the design. This isolator enhances safety and reliability in industrial motor drives.
Recommended
Power Supply Isolation
The ADUM1401ARWZ is used to isolate control signals in power supply designs, such as feedback loops and enable signals. Its 2500 Vrms isolation provides safety isolation between primary and secondary sides, and the 1 Mbps data rate is sufficient for control signals. The low power consumption (1.0 mA per channel at 2 Mbps) minimizes impact on efficiency. The 3/1 directionality allows for multiple control signals in one direction and a single feedback signal in the other. This isolator helps achieve regulatory compliance and improves system robustness in AC-DC and DC-DC converters.
Recommended
Medical Equipment Isolation
The ADUM1401ARWZ provides galvanic isolation in medical devices, ensuring patient safety by isolating low-voltage control circuits from high-voltage sections. Its 2500 Vrms isolation meets medical safety standards, and the 1 Mbps data rate is adequate for monitoring and control signals. The low power consumption is beneficial for battery-powered devices. The 3/1 channel directionality is suitable for isolating sensor data and control signals. This isolator helps achieve compliance with IEC 60601 and improves patient safety in devices like patient monitors and infusion pumps.
Recommended
Isolated Data Acquisition
The ADUM1401ARWZ is used in isolated data acquisition systems to protect sensitive measurement circuits from ground loops and noise. Its 2500 Vrms isolation and 25 kV/Β΅s CMTI ensure accurate data transfer in industrial environments. The 1 Mbps data rate is sufficient for most sensor data, and the low propagation delay (100 ns) preserves timing accuracy. The 3/1 channel directionality can be used for multiple sensor inputs and a single control signal. This isolator enhances measurement accuracy and system reliability in test and measurement equipment.
Recommended
Recommended Products Summary
Engineering reference data for ADUM1401ARWZ β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ADUM1401BRWZ | ADUM1401CRWZ | ISO7241CDWR |
|---|---|---|---|---|
| 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 | Texas Instruments |
| Data Rate | 1 Mbps | 10 Mbps | 90 Mbps | 150 Mbps |
| Isolation Voltage | 2500 Vrms | 2500 Vrms | 2500 Vrms | 2500 Vrms |
| CMTI | 25 kV/Β΅s | 25 kV/Β΅s | 25 kV/Β΅s | 25 kV/Β΅s |
| Propagation Delay | 100 ns | 50 ns | 32 ns | 16 ns |
| Supply Voltage | 2.7V to 5.5V | 2.7V to 5.5V | 2.7V to 5.5V | 3.0V to 5.5V |
| Channel Directionality | 3/1 | 3/1 | 3/1 | 3/1 |
Key Differentiators
- iCoupler technology (vs Optocouplers)
- Low power consumption (vs ISO7241CDWR)
- Pin-compatible with ADUM1401BRWZ (vs ADUM1401BRWZ)
Design Notes
Place 0.1 Β΅F decoupling capacitors close to VDD1 and VDD2 pins. Use a solid ground plane on each side of the isolation barrier, and ensure the isolation barrier is not bridged by any copper traces. Maintain adequate creepage and clearance distances per the isolation rating.
The ADUM1401ARWZ consumes up to 1.0 mA per channel at 2 Mbps, so total current can be up to 4 mA. Ensure the power supply can handle this load. For higher data rates, power consumption increases significantly, so consider the thermal impact.
The default output state is high when the input is unpowered. This can cause unintended logic states in your system. Ensure your design accounts for this behavior, especially during power-up sequences.
Compliance Information
RoHS compliant per Analog Devices product page. Not AEC-Q100 qualified.
