Overview
The ADUM1281ARZ from Analog Devices Inc. is a 3 kV RMS dual-channel digital isolator based on the iCoupler® technology. This component combines high-speed CMOS and monolithic air core transformer technology, offering superior performance compared to optocoupler devices and other integrated couplers. It features a patented refresh mechanism that ensures DC correctness even in the absence of input logic transitions. The ADUM1281ARZ is designed for various applications requiring high-speed data transfer and robust isolation.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Number of Channels | 2 | |
| Maximum Data Rate | 1 Mbps | |
| Supply Voltage Range | 3.135 V to 5.5 V | |
| Propagation Delay | 50 ns (at 5 V) | ns |
| Common-Mode Transient Immunity | > 25 kV/μs | kV/μs |
| Operating Temperature Range | -40°C to +125°C | °C |
| Package Type | 8-lead SOIC-N | |
| Isolation Voltage | 3 kV RMS | kV RMS |
Key Features
- Default high output when power is first applied or not yet applied to the input side.
- Low dynamic power consumption.
- Bidirectional communication capability.
- High common-mode transient immunity (> 25 kV/μs).
- 3.3 V to 5 V level translation.
- Patented refresh feature ensuring DC correctness in the absence of input logic transitions.
Applications
- General-purpose multichannel isolation.
- Data converter isolation.
- Industrial field bus isolation.
- Hybrid electric vehicles.
- Battery monitoring and motor drive systems.
Q & A
- What is the ADUM1281ARZ used for?
The ADUM1281ARZ is a dual-channel digital isolator used for applications requiring high-speed data transfer and robust isolation, such as general-purpose multichannel isolation, data converter isolation, and industrial field bus isolation.
- What is the maximum data rate of the ADUM1281ARZ?
The maximum data rate of the ADUM1281ARZ is 1 Mbps.
- What is the operating temperature range of the ADUM1281ARZ?
The operating temperature range is from -40°C to +125°C.
- What type of package does the ADUM1281ARZ come in?
The ADUM1281ARZ is available in an 8-lead SOIC-N package.
- What is the isolation voltage of the ADUM1281ARZ?
The isolation voltage is 3 kV RMS.
- Does the ADUM1281ARZ support bidirectional communication?
- What is the common-mode transient immunity of the ADUM1281ARZ?
The common-mode transient immunity is greater than 25 kV/μs.
- Does the ADUM1281ARZ have any special features for ensuring DC correctness?
- What are the regulatory approvals for the ADUM1281ARZ?
The ADUM1281ARZ complies with UL recognition (3000 Vrms for 1 minute per UL 1577), CSA component acceptance notice 5A, VDE certificate of conformity, and DIN V VDE V 0884-10 (VDE V 0884-10): 2006-12.
- Can the ADUM1281ARZ be used in automotive applications?
