Overview
The ADM3260ARSZ, manufactured by Analog Devices Inc., is a digital isolator designed to provide a complete isolated I²C interface along with an integrated isolated DC-to-DC converter. This component is particularly useful in applications requiring high isolation and reliable communication between two isolated domains. The ADM3260 features bidirectional I²C channels, eliminating the need for splitting I²C signals into separate transmit and receive signals, and it supports hot swap applications. The device is available in a 20-lead SSOP package and operates over a temperature range of −40°C to +105°C.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| Operating Temperature | −40°C | +105°C | |||
| Supply Voltages (VDDISO, VDDP) | 3.0 V | 5.5 V | Relative to respective ground | ||
| Isolated Power Output Voltage | 3.15 V | 5.25 V | Regulated output | ||
| Isolated Power Output Power | 150 mW | Maximum output power | |||
| Isolation Voltage | 2500 Vrms | Voltage isolation | |||
| Common Mode Transient Immunity (CMTI) | 25 kV/µs | Minimum CMTI | |||
| Number of Channels | 2 | Bidirectional I²C channels | |||
| Package Type | 20-lead SSOP | Package dimensions: 0.209" (5.30 mm) width |
Key Features
- Bidirectional I²C channels, eliminating the need for splitting I²C signals into separate transmit and receive signals
- Integrated isolated DC-to-DC converter providing a regulated, isolated voltage of 3.15 V to 5.25 V with up to 150 mW of output power
- High common-mode transient immunity: >25 kV/s
- Open-drain interfaces and 30 mA current sink capability
- Hot swappable and suitable for applications requiring high reliability and isolation
- Operating temperature range of −40°C to +105°C
Applications
- Isolated I²C, SMBus, and PMBus interfaces
- Multilevel I²C interfaces
- Central office switching and telecommunication equipment
- Data communication equipment
- 48 V distributed power systems and 48 V power supply modules
- Networking equipment
Q & A
- What is the operating temperature range of the ADM3260ARSZ?
The operating temperature range is −40°C to +105°C. - What is the isolation voltage of the ADM3260ARSZ?
The isolation voltage is 2500 Vrms. - How many I²C channels does the ADM3260ARSZ have?
The ADM3260ARSZ has 2 bidirectional I²C channels. - What is the maximum output power of the integrated DC-to-DC converter?
The maximum output power is 150 mW. - What is the common mode transient immunity (CMTI) of the ADM3260ARSZ?
The CMTI is greater than 25 kV/µs. - In what package type is the ADM3260ARSZ available?
The ADM3260ARSZ is available in a 20-lead SSOP package. - Is the ADM3260ARSZ suitable for hot swap applications?
Yes, the ADM3260ARSZ is suitable for hot swap applications. - What are the supply voltage ranges for the ADM3260ARSZ?
The supply voltage ranges are 3.0 V to 5.5 V for both VDDISO and VDDP. - What are some typical applications of the ADM3260ARSZ?
Typical applications include isolated I²C, SMBus, and PMBus interfaces, central office switching, telecommunication and data communication equipment, and 48 V distributed power systems. - Does the ADM3260ARSZ have any special layout requirements for PCB design?
Yes, special care must be taken during PCB layout to meet emissions standards. Refer to the AN-0971 Application Note for board layout recommendations.
