Overview
The ADuM1201CR is a dual-channel digital isolator produced by Analog Devices Inc., leveraging the company's proprietary iCoupler technology. This device is designed to provide high-speed, low-latency, and reliable digital signal isolation, making it suitable for a variety of applications that require voltage translation and electrical isolation. The ADuM1201CR supports bidirectional communication and operates at high data rates up to 25 Mbps, ensuring precise timing characteristics and minimal pulse width distortion.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit | Test Conditions |
|---|---|---|---|---|---|---|
| Supply Voltage (VDD1, VDD2) | VDD | 4.5 | - | 5.5 | V | - |
| Supply Current per Channel at 0 Mbps to 2 Mbps | IDD1, IDD2 | 0.4 | - | 0.8 | mA | DC to 1 MHz logic signal freq. |
| Supply Current per Channel at 10 Mbps | IDD1, IDD2 | 1.5 | - | 2.2 | mA | 5 MHz logic signal freq. |
| Supply Current per Channel at 25 Mbps | IDD1, IDD2 | 3.4 | - | 4.8 | mA | 12.5 MHz logic signal freq. |
| Maximum Data Rate | - | - | - | 25 | Mbps | CL = 15 pF, CMOS signal levels |
| Propagation Delay (tPHL, tPLH) | tPHL, tPLH | 20 | - | 45 | ns | CL = 15 pF, CMOS signal levels |
| Pulse Width Distortion (PWD) | PWD | - | - | 3 | ns | CL = 15 pF, CMOS signal levels |
| Output Rise/Fall Time (10% to 90%) | tR/tF | - | - | 2.5 | ns | CL = 15 pF, CMOS signal levels |
| Isolation Voltage | - | - | - | 2500 | Vrms | UL 1577 |
Key Features
- High-Speed Data Transfer: Supports data rates up to 25 Mbps with minimal pulse width distortion and tight channel-to-channel matching.
- Voltage Translation: Provides 3 V/5 V level translation across the isolation barrier.
- High Temperature Operation: Qualified for operation up to 125°C, making it suitable for demanding environments.
- Electrical Isolation: Offers high common-mode transient immunity (>25 kV/μs) and 2500 Vrms isolation voltage.
- Patented Refresh Feature: Ensures dc correctness in the absence of input logic transitions and during power-up/power-down conditions.
- Automotive Grade: The ADuM1201CR is qualified for automotive applications, including hybrid electric vehicles, battery monitors, and motor drives.
Applications
- Size-Critical Multichannel Isolation: Ideal for applications where space is limited but multiple channels of isolation are required.
- SPI Interface/Data Converter Isolation: Used in systems requiring isolated communication between SPI interfaces and data converters.
- RS-232/RS-422/RS-485 Transceiver Isolation: Suitable for isolating serial communication interfaces.
- Digital Field Bus Isolation: Applied in industrial control systems and field buses to ensure reliable and isolated communication.
- Automotive Systems: Used in hybrid electric vehicles, battery monitors, and motor drives due to its high temperature and isolation capabilities.
Q & A
- What is the maximum data rate supported by the ADuM1201CR?
The ADuM1201CR supports data rates up to 25 Mbps. - What is the isolation voltage of the ADuM1201CR?
The isolation voltage is 2500 Vrms. - Does the ADuM1201CR support voltage translation?
Yes, it supports 3 V/5 V level translation. - What is the maximum operating temperature of the ADuM1201CR?
The maximum operating temperature is 125°C. - What is the purpose of the patented refresh feature in the ADuM1201CR?
The patented refresh feature ensures dc correctness in the absence of input logic transitions and during power-up/power-down conditions. - Is the ADuM1201CR qualified for automotive applications?
Yes, it is qualified for automotive applications, including hybrid electric vehicles, battery monitors, and motor drives. - What are some common applications of the ADuM1201CR?
Common applications include size-critical multichannel isolation, SPI interface/data converter isolation, RS-232/RS-422/RS-485 transceiver isolation, and digital field bus isolation. - How does the ADuM1201CR ensure precise timing characteristics?
The device ensures precise timing characteristics through low pulse width distortion (<3 ns for CR grade) and tight channel-to-channel matching (<3 ns for CR grade). - What is the typical supply current per channel at 25 Mbps?
The typical supply current per channel at 25 Mbps is between 3.4 mA and 4.8 mA. - Does the ADuM1201CR have any safety and regulatory approvals?
Yes, it has UL recognition, CSA Component Acceptance Notice, and VDE Certificate of Conformity.
