Overview
The ADUM1440ARSZ-RL7 is a micropower, 4-channel digital isolator produced by Analog Devices Inc. This component utilizes the iCoupler® technology, combining high-speed CMOS and monolithic air core transformer technologies to provide superior performance compared to traditional optocoupler devices. It is designed for low-power, multichannel isolation applications and is recognized by various regulatory standards including UL 1577, CSA, VDE, and IECEx/ATEX intrinsic safety certifications.
Key Specifications
| Parameter | Value | Unit | Comments |
|---|---|---|---|
| Number of Channels | 4 | ||
| Maximum Data Rate | 2 Mbps | ||
| Propagation Delay | 180 ns (max at 3.3V) | ns | |
| Output Rise/Fall Time | 2 ns (typ at 10% to 90%) | ns | |
| Operating Temperature Range | -40°C to +125°C | °C | |
| Isolation Voltage | 2.5 kV rms for 1 minute | V | UL 1577 |
| Package Type | 20-lead SSOP | ||
| Supply Voltage Range | 2.25 V to 5.5 V | V | |
| Common-Mode Transient Immunity | >40 kV/µs (typ) | kV/µs |
Key Features
- Bidirectional communication capability
- High default output state
- Low power consumption: less than 10 µA per channel in standard operating mode and less than 1 µA per channel with internal refresh disabled
- Input glitch filter to protect against extraneous noise disturbances
- Pulse width distortion of less than 8 ns
- Compact 20-lead SSOP package, saving board space compared to wide body SOIC packages
Applications
- General-purpose, low power multichannel isolation
- 1 MHz, low-power peripheral interface (SPI)
- 4 mA to 20 mA loop process controls
- Industrial control systems requiring high isolation and low power consumption
- Medical devices and other applications needing robust isolation and safety certifications
Q & A
- What is the ADUM1440ARSZ-RL7 used for?
The ADUM1440ARSZ-RL7 is used for low-power, multichannel digital isolation in various applications, including industrial control systems, medical devices, and peripheral interfaces like SPI.
- What is the maximum data rate of the ADUM1440ARSZ-RL7?
The maximum data rate of the ADUM1440ARSZ-RL7 is 2 Mbps.
- What is the operating temperature range of the ADUM1440ARSZ-RL7?
The operating temperature range is from -40°C to +125°C.
- What are the regulatory certifications of the ADUM1440ARSZ-RL7?
The component is certified by UL 1577, CSA, VDE, IECEx, and ATEX for intrinsic safety.
- What is the package type of the ADUM1440ARSZ-RL7?
The package type is a 20-lead SSOP.
- How much power does the ADUM1440ARSZ-RL7 consume?
The component consumes less than 10 µA per channel in standard operating mode and less than 1 µA per channel with internal refresh disabled.
- What is the common-mode transient immunity of the ADUM1440ARSZ-RL7?
The common-mode transient immunity is greater than 40 kV/µs.
- Does the ADUM1440ARSZ-RL7 support bidirectional communication?
- What is the isolation voltage of the ADUM1440ARSZ-RL7?
The isolation voltage is 2.5 kV rms for 1 minute according to UL 1577.
- What are some typical applications of the ADUM1440ARSZ-RL7?
Typical applications include general-purpose isolation, SPI interfaces, 4 mA to 20 mA loop process controls, and industrial control systems.
