Overview
The ADUM1401ARW-RL is a quad-channel digital isolator produced by Analog Devices Inc., utilizing their proprietary iCoupler® technology. This component combines high-speed CMOS and monolithic air core transformer technology to provide reliable and high-speed data isolation. The ADUM1401ARW-RL is designed to ensure dc correctness in the absence of input logic transitions and when power is not applied to one of the supplies, thanks to its patented refresh feature.
Key Specifications
| Parameter | 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)) | 1.8 | 2.4 | - | mA | DC to 1 MHz logic signal freq. |
| Maximum Data Rate | - | - | 1 Mbps (ARW), 10 Mbps (BRW), 90 Mbps (CRW) | - | CL = 15 pF, CMOS signal levels |
| Propagation Delay (tPHL, tPLH) | 50 | 65 | 100 ns | ns | CL = 15 pF, CMOS signal levels |
| Pulse Width Distortion (PWD) | - | - | 40 ns (ARW), 3 ns (BRW), 0.5 ns (CRW) | ns | CL = 15 pF, CMOS signal levels |
| Isolation Voltage | - | - | 2500 Vrms | Vrms | - |
| Common Mode Transient Immunity (CMTI) | - | - | 25 kV/μs | kV/μs | - |
Key Features
- High-Speed Data Isolation: The ADUM1401ARW-RL supports data rates up to 1 Mbps for the ARW grade, 10 Mbps for the BRW grade, and 90 Mbps for the CRW grade.
- Low Pulse Width Distortion: Ensures minimal distortion with values as low as 0.5 ns for CRW grades.
- Tight Channel-to-Channel Matching: Provides consistent performance across channels with matching as tight as 2 ns for codirectional channels.
- 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.
- High Isolation Voltage: Offers 2500 Vrms isolation voltage, ensuring robust electrical isolation.
- Common Mode Transient Immunity (CMTI): Provides immunity up to 25 kV/μs, enhancing reliability in noisy environments.
Applications
- Industrial Control Systems: Suitable for use in industrial automation and control systems where high-speed data isolation is critical.
- Medical Devices: Used in medical equipment to ensure patient safety through reliable electrical isolation.
- Automotive Systems: Available in automotive-grade versions (ADuM1401W, ADuM1402W), making it suitable for automotive applications.
- Power Supplies and DC-DC Converters: Ideal for isolating feedback signals in power supplies and DC-DC converters.
- Communication Systems: Used in various communication systems requiring high-speed data isolation, such as in RS-232, RS-422, and RS-485 interfaces.
Q & A
- What is the ADUM1401ARW-RL used for?
The ADUM1401ARW-RL is a quad-channel digital isolator used for high-speed data isolation in various applications, including industrial control systems, medical devices, and automotive systems.
- What are the different grades of the ADUM1401?
The ADUM1401 is available in several grades, including ARW, BRW, and CRW, each offering different maximum data rates and performance characteristics.
- What is the maximum data rate of the ADUM1401ARW-RL?
The ADUM1401ARW-RL has a maximum data rate of 1 Mbps.
- What is the isolation voltage of the ADUM1401ARW-RL?
The ADUM1401ARW-RL offers an isolation voltage of 2500 Vrms.
- What is the common mode transient immunity (CMTI) of the ADUM1401ARW-RL?
The ADUM1401ARW-RL has a CMTI of 25 kV/μs.
- Does the ADUM1401ARW-RL have any special features for ensuring dc correctness?
Yes, the ADUM1401ARW-RL features a patented refresh mechanism that ensures dc correctness even in the absence of input logic transitions or when power is not applied to one of the supplies.
- What are the typical applications of the ADUM1401ARW-RL?
The ADUM1401ARW-RL is typically used in industrial control systems, medical devices, automotive systems, power supplies, and various communication systems.
- Is the ADUM1401 available in automotive-grade versions?
Yes, the ADUM1401 is available in automotive-grade versions, such as ADuM1401W and ADuM1402W.
- What is the package type of the ADUM1401ARW-RL?
The ADUM1401ARW-RL is packaged in a 16-SOIC (0.295", 7.50mm Width) package.
- How does the ADUM1401ARW-RL ensure tight channel-to-channel matching?
The ADUM1401ARW-RL ensures tight channel-to-channel matching with values as low as 2 ns for codirectional channels, enhancing the consistency of its performance.
