ADM3260ARSZ – Integrated Circuit – Analog Devices

DIGITAL ISOLATOR

ADM3260ARSZ – 2-Channel I2C Digital Isolator with Isolated Power – Analog Devices

Ensure robust signal integrity and safety in your designs with the ADM3260ARSZ digital isolator from Analog Devices. This integrated circuit combines galvanic isolation and power delivery for I2C interfaces, eliminating the need for external isolated DC-DC converters. Ideal for noise-prone environments, it delivers reliable data transfer while protecting sensitive components from high-voltage transients.

Key Features

Isolation Voltage: 2500Vrms protection
Integrated Power: Built-in isolated DC-DC converter
High Immunity: 25kV/µs common-mode transient rejection
Dual Channels: 2 bidirectional I2C-compatible channels
Wide Voltage Range: 3V to 5.5V supply
Extended Temperature: -40°C to 105°C operation
Compact Design: 20-SSOP surface-mount package

Technical Details
Utilizing Analog Devices’ proprietary iCoupler® magnetic coupling and IsoPower® technology, this isolator provides reinforced isolation between circuits. Features include bidirectional data transfer, low pulse width distortion (85ns typical), and compatibility with I2C standard/fast-mode speeds. The 20-SSOP package (5.30mm width) enables high-density PCB layouts while maintaining 2500Vrms insulation. Download the datasheet from our product page for signal timing diagrams and layout guidelines.

Typical Applications

Industrial automation control systems
Medical device patient isolation barriers
Power supply monitoring/feedback circuits
Communication interface protection (RS-485, CAN)
Sensor networks in electrically noisy environments

About Analog Devices
Analog Devices Inc. (ADI) is a global leader in high-performance semiconductor solutions, renowned for precision signal processing and power management technologies. With over 50 years of innovation, ADI sets industry standards for reliability in mission-critical applications.
Their IsoPower® and iCoupler® product lines reflect ADI’s commitment to solving complex isolation challenges while minimizing component count. Rigorous testing ensures compliance with international safety standards, making ADI components a trusted choice for aerospace, healthcare, and industrial systems.

About Digital Isolators
Digital isolators prevent hazardous voltages and ground loops from damaging circuits while enabling data transfer across isolation barriers. Unlike optocouplers, magnetic-based isolators offer higher speed, lower power consumption, and longer lifespan without LED degradation.
Critical for safety-certified designs, these ICs provide galvanic isolation required in medical equipment (patient protection), industrial controllers (noise immunity), and energy systems (high-voltage separation). Modern isolators like the ADM3260 integrate power conversion, reducing board space and BOM costs.

Packaging Options
Available in protective Tube packaging for automated assembly processes. Contact our support team for reel quantity options or custom packaging requests.

Frequently Asked Questions
Q: Does this isolator support standard I2C clock speeds?
A: Yes, it’s compatible with both standard (100kHz) and fast-mode (400kHz) I2C operation.

Q: Can the ADM3260 replace an optocoupler in existing designs?
A: Absolutely. Its magnetic coupling technology offers superior performance and reliability compared to optical solutions.

Q: Is external circuitry needed for the integrated DC-DC converter?
A: Only minimal external capacitors are required – refer to the datasheet for implementation details.

Q: What safety certifications does this isolator carry?
A: It meets UL 1577, CSA, and VDE standards for reinforced insulation at 2500Vrms.

Q: How does magnetic isolation differ from capacitive isolation?
A: Magnetic coupling (used here) provides higher noise immunity and better tolerance to fast voltage transients.

Q: Can I use this for SPI or UART interfaces?
A: While optimized for I2C, it can be adapted for other protocols –