Overview
The ADUM1201AR, produced by Analog Devices Inc., is a dual-channel digital isolator based on the iCoupler technology. This component provides two independent isolation channels, enabling reliable and high-speed data transmission across an isolation barrier. It is designed to ensure dc correctness in the absence of input logic transitions and during power-up/power-down conditions, thanks to its patented refresh feature. The ADUM1201AR is suitable for a wide range of applications requiring high data rates and precise timing characteristics.
Key Specifications
| Parameter | Value | Conditions |
|---|---|---|
| Supply Voltage (VDD1, VDD2) | 2.7 V to 5.5 V | 3 V or 5 V operation |
| Maximum Data Rate | Up to 25 Mbps | Depending on the grade (e.g., 1 Mbps for AR grade, 10 Mbps for BR grade) |
| Propagation Delay (tPHL, tPLH) | 15 ns to 150 ns | Depending on the grade and data rate |
| Pulse Width Distortion | < 3 ns (CR grade) | |
| Channel-to-Channel Matching | < 3 ns (CR grade) | |
| Output Rise/Fall Time | 10 ns (10% to 90%) | |
| Operating Temperature | -40°C to +125°C | |
| Storage Temperature | -55°C to +150°C | |
| Isolation Voltage | 1200 Vrms | |
| Common-Mode Transient Immunity | >25 kV/μs |
Key Features
- Bidirectional communication and 3 V/5 V level translation
- High data rate: dc to 25 Mbps (NRZ)
- Precise timing characteristics with low pulse width distortion (<3 ns for CR grade) and tight channel-to-channel matching (<3 ns for CR grade)
- High common-mode transient immunity: >25 kV/μs
- Patented refresh feature ensuring dc correctness in the absence of input logic transitions and during power-up/power-down conditions
- Automotive grade versions qualified for 125°C operation
- Safety and regulatory approvals: UL recognition, CSA Component Acceptance Notice, VDE Certificate of Conformity
Applications
- Size-critical multichannel isolation
- SPI interface/data converter isolation
- RS-232/RS-422/RS-485 transceiver isolation
- Digital field bus isolation
- Hybrid electric vehicles, battery monitor, and motor drive
- Industrial automation and control systems
- Automotive interfaces (CAN, Audio, Ethernet)
Q & A
- What is the ADUM1201AR used for?
The ADUM1201AR is a dual-channel digital isolator used for reliable and high-speed data transmission across an isolation barrier in various applications such as industrial automation, automotive systems, and digital field bus isolation.
- What are the key features of the ADUM1201AR?
The key features include bidirectional communication, 3 V/5 V level translation, high data rates up to 25 Mbps, low pulse width distortion, and a patented refresh feature for dc correctness.
- What are the operating and storage temperature ranges for the ADUM1201AR?
The operating temperature range is -40°C to +125°C, and the storage temperature range is -55°C to +150°C.
- What is the isolation voltage of the ADUM1201AR?
The isolation voltage is 1200 Vrms.
- Does the ADUM1201AR have any safety and regulatory approvals?
Yes, it has UL recognition, CSA Component Acceptance Notice, and VDE Certificate of Conformity.
- What are some common applications of the ADUM1201AR?
Common applications include size-critical multichannel isolation, SPI interface/data converter isolation, RS-232/RS-422/RS-485 transceiver isolation, and automotive interfaces.
- How does the ADUM1201AR ensure dc correctness?
The ADUM1201AR ensures dc correctness through its patented refresh feature, which sends periodic pulses to the decoder in the absence of input logic transitions.
- What is the maximum data rate supported by the ADUM1201AR?
The maximum data rate supported is up to 25 Mbps, depending on the grade of the component.
- What is the propagation delay of the ADUM1201AR?
The propagation delay ranges from 15 ns to 150 ns, depending on the grade and data rate.
- Is the ADUM1201AR suitable for automotive applications?
Yes, the ADUM1201AR has automotive grade versions qualified for 125°C operation.
