Overview
The ADUM1402BRWZ is a quad-channel digital isolator produced by Analog Devices Inc., utilizing the company's proprietary iCoupler® technology. This device combines high-speed CMOS and monolithic construction to provide reliable and efficient signal isolation. The ADUM1402 is designed with a 2/2 channel directionality, making it suitable for a variety of applications that require robust digital signal isolation.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit | Test Conditions |
|---|---|---|---|---|---|---|
| Input Supply Current per Channel, Quiescent | IDDI (Q) | 0.50 | 0.53 | mA | DC to 1 MHz logic signal freq. | |
| Output Supply Current per Channel, Quiescent | IDDO (Q) | 0.19 | 0.21 | mA | DC to 1 MHz logic signal freq. | |
| Total Supply Current, Four Channels | IDD1 (Q), IDD2 (Q) | 1.5 | 2.1 | mA | DC to 1 MHz logic signal freq. | |
| Total Supply Current at 10 Mbps | IDD1 (10), IDD2 (10) | 5.6 | 7.0 | mA | 5 MHz logic signal freq. | |
| Total Supply Current at 90 Mbps (CRW Grade Only) | IDD1 (90), IDD2 (90) | 44 | 62 | mA | 45 MHz logic signal freq. | |
| Propagation Delay | tPHL, tPLH | 50 | 65 | 100 ns | CL = 15 pF, CMOS signal levels | |
| Pulse Width Distortion | PWD | 40 ns | CL = 15 pF, CMOS signal levels |
Key Features
- High-Speed Operation: Supports data rates up to 90 Mbps for CRW grade and up to 10 Mbps for BRW grade.
- Low Pulse Width Distortion: Less than 2 ns for CRW grade, ensuring minimal signal distortion.
- Tight Channel-to-Channel Matching: Less than 2 ns for CRW grade, enhancing signal integrity.
- Refresh Feature: Ensures dc correctness in the absence of input logic transitions and when power is not applied to one of the supplies.
- Quad-Channel Isolation: Provides isolation for four independent channels with 2/2 channel directionality.
- Automotive Grade Versions: Available for automotive applications, such as CAN, audio, and Ethernet interfaces.
Applications
- Industrial I/O: Suitable for industrial control systems and automation.
- Automotive Interfaces: Used in CAN, audio, and Ethernet interfaces in automotive systems.
- RS-232 / RS-422 / RS-485 Interfaces: Ideal for serial communication interfaces requiring isolation.
- Local Interconnect Network (LIN) Transceivers: Used in automotive and industrial LIN applications.
- IO-Link and Multiprotocol Transceivers: Supports various industrial communication protocols.
Q & A
- What is the ADUM1402BRWZ used for?
The ADUM1402BRWZ is a quad-channel digital isolator used to isolate digital signals in various applications, including industrial control systems, automotive interfaces, and serial communication interfaces.
- What is the maximum data rate supported by the ADUM1402BRWZ?
The ADUM1402BRWZ supports data rates up to 90 Mbps for the CRW grade and up to 10 Mbps for the BRW grade.
- What is the propagation delay of the ADUM1402BRWZ?
The propagation delay of the ADUM1402BRWZ is between 50 ns and 100 ns.
- Does the ADUM1402BRWZ have any special features for ensuring signal integrity?
Yes, it features low pulse width distortion and tight channel-to-channel matching to ensure minimal signal distortion.
- Is the ADUM1402BRWZ suitable for automotive applications?
Yes, the ADUM1402BRWZ is available in automotive grade versions and is suitable for various automotive interfaces.
- What is the refresh feature of the ADUM1402BRWZ?
The refresh feature ensures dc correctness in the absence of input logic transitions and when power is not applied to one of the supplies.
- How many channels does the ADUM1402BRWZ support?
The ADUM1402BRWZ supports four independent channels with 2/2 channel directionality.
- What are some common applications of the ADUM1402BRWZ?
Common applications include industrial I/O, automotive interfaces, RS-232 / RS-422 / RS-485 interfaces, and LIN transceivers.
- What is the typical quiescent supply current for the ADUM1402BRWZ?
The typical quiescent supply current for the ADUM1402BRWZ is around 1.5 mA to 2.1 mA per channel.
- Is the ADUM1402BRWZ compatible with various industrial communication protocols?
Yes, it is compatible with protocols such as IO-Link and multiprotocol transceivers.
