Overview
The ADUM1402CRW-RL is a quad-channel digital isolator produced by Analog Devices Inc., utilizing the proprietary iCoupler® technology. This component is designed to provide high-speed digital isolation with low pulse width distortion and tight channel-to-channel matching. It operates with supply voltages ranging from 2.7 V to 5.5 V, enabling compatibility with various voltage systems and facilitating voltage translation across the isolation barrier.
The ADUM1402CRW-RL is part of the ADuM1400/ADuM1401/ADuM1402 series, which are known for their high-speed CMOS and monolithic construction. These isolators are protected by several U.S. patents and feature a unique refresh mechanism to ensure DC correctness even in the absence of input logic transitions or when one of the supplies is not powered.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit | Test Conditions |
|---|---|---|---|---|---|---|
| Input Supply Current per Channel, Quiescent | IDDI (Q) | 0.26 | 0.31 | 0.53 | mA | 3 V/5 V Operation, DC to 1 MHz logic signal freq. |
| Output Supply Current per Channel, Quiescent | IDDO (Q) | 0.11 | 0.14 | 0.21 | mA | 5 V/3 V Operation, DC to 1 MHz logic signal freq. |
| Minimum Pulse Width | PW | 8.3 | 11.1 | - | ns | CL = 15 pF, CMOS signal levels |
| Maximum Data Rate | - | 90 | 120 | - | Mbps | CL = 15 pF, CMOS signal levels |
| Propagation Delay | tPHL, tPLH | 20 | 34 | 45 | ns | CL = 15 pF, CMOS signal levels |
| Pulse Width Distortion | PWD | 0.5 | 2 | - | ns | CL = 15 pF, CMOS signal levels |
| Propagation Delay Skew | tPSK | 16 | - | - | ns | CL = 15 pF, CMOS signal levels |
| Channel-to-Channel Matching, Codirectional Channels | tPSKCD | 2 | - | - | ns | CL = 15 pF, CMOS signal levels |
| Channel-to-Channel Matching, Opposing-Directional Channels | tPSKOD | 5 | - | - | ns | CL = 15 pF, CMOS signal levels |
Key Features
- High-Speed Operation: Supports data rates up to 90 Mbps for the CRW grade, ensuring high-speed communication across the isolation barrier.
- Low Pulse Width Distortion: Offers less than 2 ns of pulse width distortion, ensuring accurate signal transmission.
- Tight Channel-to-Channel Matching: Provides matching as low as 2 ns for codirectional channels and 5 ns for opposing-directional channels, enhancing signal integrity.
- Voltage Translation: Operates with supply voltages ranging from 2.7 V to 5.5 V, facilitating voltage translation across the isolation barrier.
- Refresh Mechanism: Ensures DC correctness even in the absence of input logic transitions or when one of the supplies is not powered.
- High Isolation Voltage: Offers 2500 Vrms isolation voltage, providing robust electrical isolation.
Applications
- Industrial I/O: Suitable for industrial control systems, sensors, and actuators where high-speed and reliable isolation is required.
- Automotive Interfaces: Used in automotive systems such as CAN, audio, and Ethernet interfaces due to its high reliability and speed.
- Medical Devices: Applicable in medical devices where electrical isolation is critical for patient safety.
- RS-232 / RS-422 / RS-485 Interfaces: Ideal for serial communication interfaces requiring high-speed data transfer and electrical isolation.
- Powerline Communications: Used in powerline communication systems to ensure reliable and isolated data transmission.
Q & A
- What is the maximum data rate supported by the ADUM1402CRW-RL?
The ADUM1402CRW-RL supports a maximum data rate of up to 120 Mbps for the CRW grade.
- What is the minimum pulse width for the ADUM1402CRW-RL?
The minimum pulse width for the ADUM1402CRW-RL is 8.3 ns.
- What is the propagation delay of the ADUM1402CRW-RL?
The propagation delay of the ADUM1402CRW-RL is between 20 ns and 45 ns.
- Does the ADUM1402CRW-RL support voltage translation?
Yes, the ADUM1402CRW-RL operates with supply voltages ranging from 2.7 V to 5.5 V, facilitating voltage translation across the isolation barrier.
- What is the isolation voltage of the ADUM1402CRW-RL?
The ADUM1402CRW-RL offers an isolation voltage of 2500 Vrms.
- What is the purpose of the refresh mechanism in the ADUM1402CRW-RL?
The refresh mechanism ensures DC correctness even in the absence of input logic transitions or when one of the supplies is not powered.
- Can the ADUM1402CRW-RL be used in automotive applications?
Yes, the ADUM1402CRW-RL is suitable for automotive interfaces such as CAN, audio, and Ethernet due to its high reliability and speed.
- What are the typical applications of the ADUM1402CRW-RL?
The ADUM1402CRW-RL is typically used in industrial I/O, medical devices, RS-232 / RS-422 / RS-485 interfaces, and powerline communications.
- How does the ADUM1402CRW-RL ensure signal integrity?
The ADUM1402CRW-RL ensures signal integrity through low pulse width distortion and tight channel-to-channel matching.
- What is the packaging of the ADUM1402CRW-RL?
The ADUM1402CRW-RL is available in a 16-SOIC package and is supplied in tape and reel (TR) format.
