Overview
The ADuM1402ARW-RL is a quad-channel digital isolator produced by Analog Devices Inc., utilizing the company's patented iCoupler technology. This component is designed to provide high-speed digital isolation, combining the benefits of CMOS and monolithic construction. The ADuM1402ARW-RL is part of the ADuM1400/ADuM1401/ADuM1402 family, which offers various grades to cater to different application requirements, including the BRW and CRW grades for higher data rates.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit | Test Conditions |
|---|---|---|---|---|---|---|
| Input Supply Current per Channel, Quiescent | IDDI (Q) | 0.50 | 0.53 | mA | 5 V/3 V Operation | |
| Output Supply Current per Channel, Quiescent | IDDO (Q) | 0.11 | 0.14 | mA | 5 V/3 V Operation | |
| Total Supply Current, Four Channels | IDD1 (Q), IDD2 (Q) | 2.2 | 2.8 | mA | DC to 1 MHz logic signal freq., 5 V/3 V Operation | |
| Minimum Pulse Width | PW | 100 | - | ns | CL = 15 pF, CMOS signal levels (ARW Grade) | |
| Maximum Data Rate | - | - | 1 | Mbps | CL = 15 pF, CMOS signal levels (ARW Grade) | |
| Propagation Delay | tPHL, tPLH | 50 | 65 | 100 | ns | CL = 15 pF, CMOS signal levels (ARW Grade) |
| Pulse Width Distortion | PWD | - | - | 40 | ns | CL = 15 pF, CMOS signal levels (ARW Grade) |
Key Features
- High-Speed Digital Isolation: The ADuM1402ARW-RL supports high-speed data transfer with propagation delays as low as 20 ns for CRW grades and 50 ns for ARW grades.
- Voltage Translation: The component can operate with supply voltages ranging from 2.7 V to 5.5 V on either side, enabling voltage translation across the isolation barrier.
- Low Pulse Width Distortion: The CRW grade offers pulse width distortion as low as 0.5 ns, ensuring accurate signal transmission.
- Tight Channel-to-Channel Matching: The component features tight channel-to-channel matching, with skew as low as 2 ns for codirectional channels in CRW grades.
- Refresh Feature: A patented refresh feature ensures dc correctness even in the absence of input logic transitions or when power is not applied to one of the supplies.
Applications
- Industrial I/O: Suitable for industrial control systems where high-speed data isolation is required.
- Automotive Interfaces: Used in automotive applications such as CAN, audio, and Ethernet interfaces.
- Medical Devices: Applicable in medical devices where isolation is critical for safety and compliance.
- RS-232 / RS-422 / RS-485 Interfaces: Can be used in serial communication interfaces requiring isolation.
- Signal Line Protection: Provides protection against electrical noise and transient voltages in various signal lines).
Q & A
- What is the ADuM1402ARW-RL used for?
The ADuM1402ARW-RL is a quad-channel digital isolator used for high-speed digital isolation in various applications, including industrial, automotive, and medical devices.
- What are the key features of the ADuM1402ARW-RL?
Key features include high-speed digital isolation, voltage translation, low pulse width distortion, tight channel-to-channel matching, and a patented refresh feature.
- What are the typical propagation delays for the ADuM1402ARW-RL?
The propagation delays are typically 50 ns to 100 ns for the ARW grade and as low as 20 ns to 45 ns for the CRW grade.
- What is the maximum data rate supported by the ADuM1402ARW-RL?
The maximum data rate is 1 Mbps for the ARW grade and up to 120 Mbps for the CRW grade.
- What is the operating voltage range for the ADuM1402ARW-RL?
The component can operate with supply voltages ranging from 2.7 V to 5.5 V on either side.
- What is the purpose of the refresh feature in the ADuM1402ARW-RL?
The refresh feature ensures dc correctness in the absence of input logic transitions or when power is not applied to one of the supplies.
- Can the ADuM1402ARW-RL be used in automotive applications?
Yes, it is suitable for various automotive interfaces such as CAN, audio, and Ethernet.
- What is the minimum pulse width for the ADuM1402ARW-RL?
The minimum pulse width is 100 ns for the ARW grade and as low as 8.3 ns for the CRW grade.
- How does the ADuM1402ARW-RL ensure signal integrity?
It ensures signal integrity through low pulse width distortion and tight channel-to-channel matching.
- What are some common applications of the ADuM1402ARW-RL?
Common applications include industrial I/O, automotive interfaces, medical devices, and serial communication interfaces.
