Overview
The ADUM5401ARWZ is a four-channel digital isolator with integrated isolated power supply launched by Analog Devices (ADI) . Based on ADI’s mature iCoupler® magnetic isolation technology , it achieves high-reliability digital signal isolation while integrating an isolated DC/DC power supply module that can directly power the isolated circuit, thus significantly simplifying system design.
This device supports 2.5kVrms isolation withstand voltage and features a built-in regulated output, providing a stable and secure data and power isolation solution in industrial environments. The ADUM5401ARWZ is widely used in applications requiring high security, integration, and reliability, such as industrial communication interfaces, PLC systems, sensor isolation, motor control, medical equipment, and smart grids .
Core parameters
parameter | value |
Product Type | Digital isolators with integrated isolation power supplies |
Number of isolation channels | 4 channels (3:1 orientation) |
Isolation technology | iCoupler® Magnetic Isolation |
Isolation and withstand voltage | 2.5kVrms |
Integrated power output | Isolated DC/DC (5V output) |
Input power supply voltage | 3.0V to 5.5V |
Data rate | 25Mbps |
Propagation delay | Approximately 50 ns (typical) |
Common-mode transient immunity (CMTI) | >25kV/μs |
Operating temperature range | -40°C to +105°C |
Encapsulation type | SOIC-16 (RW) |
Certification Standards | UL, CSA, VDE |
Environmental standards | RoHS compliant |
Features
Integrated isolated power supply simplifies system design
The ADUM5401ARWZ integrates an isolated DC/DC converter that can directly provide stable power to the isolated circuitry, reducing the need for external isolation power modules and magnetic components, and significantly lowering BOM costs and PCB area.
High reliability digital isolation performance
Based on ADI’s iCoupler® technology, it enables high-speed and stable data isolation transmission, supports a maximum data rate of 25Mbps, and meets the requirements of common digital communication interfaces such as SPI and UART.
Excellent anti-interference capability
The device features a CMTI of over 25kV/μs , maintaining data integrity in high-noise, high-dv/dt industrial environments, making it ideal for motor drives and high-voltage power supply systems.
Industrial-grade security and certification support
It supports 2.5kVrms isolation withstand voltage and has passed multiple international safety certifications, meeting the isolation safety specifications for industrial, energy, and medical equipment.
Typical application scenarios
Signal and power isolation for industrial communication interfaces such as RS-485, SPI, and UART.
PLC and automation system
input/output modules and fieldbus isolation design.
Motor control signals are isolated from inverter
control signals, improving system safety and anti-interference capabilities.
Sensor isolation power supply
provides power and data channels for isolated sensors or ADCs.
Medical and energy equipment
requires signal and power isolation systems that meet high safety standards.
Comparative Advantage Analysis
Performance indicators | ADUM5401ARWZ | Traditional isolator + external power supply |
Isolation methods | Magnetic isolation + integrated power supply | Optocoupler + External DC/DC |
Integration | high | Low |
Data rate | 25Mbps | Typically lower |
CMTI | >25kV/μs | lower |
PCB area | Small | big |
System complexity | Low | high |
The ADUM5401ARWZ has significant advantages in integration, reliability, and anti-interference capabilities , making it an ideal choice for high-security industrial systems.
Manufacturer Profile: Analog Devices (ADI)
Analog Devices is a leading global manufacturer of high-performance analog, mixed-signal, and digital signal processing semiconductors. ADI’s iCoupler® digital isolation technology is widely used in industrial, energy, and medical fields, while the ADUM5401 series represents a mature example of highly integrated isolation solutions.
Why choose ADUM5401ARWZ?
● Integrated isolated DC/DC power supply reduces system complexity
● 2.5kVrms high isolation voltage meets safety standards
● 25Mbps high-speed data transmission capability
● High CMTI, suitable for noisy industrial environments
● Certified by multiple international safety standards
● Industrial-grade wide temperature range for high reliability
Frequently Asked Questions (FAQ)
Q1: Can the ADUM5401ARWZ completely replace an external isolated power supply?
Yes, it can in most low-power isolated applications. The ADUM5401ARWZ integrates an isolated DC/DC converter, capable of powering isolated digital circuitry and some low-power analog circuitry, thus reducing the need for an external power supply module. However, for high-power loads, it is still recommended to evaluate the power budget.
Q2: Is this device suitable for motor drive systems?
Absolutely. Its high CMTI characteristics effectively resist high dv/dt interference generated during motor drive, ensuring stable transmission of control signals in complex electromagnetic environments. It is a commonly used isolation solution for industrial motor control and inverter systems.
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