Overview
The ADUM1440ARQZ-RL7 is a micropower, 4-channel digital isolator developed by Analog Devices Inc., utilizing the iCoupler® technology. This component combines high-speed complementary metal oxide semiconductor (CMOS) and monolithic air core transformer technologies, offering superior performance compared to traditional optocoupler devices. It is designed for low power, multichannel isolation and is approved by various regulatory standards including UL 1577, CSA, VDE, IECEx, and ATEX intrinsic safety certifications.
Key Specifications
| Parameter | Value | Unit | Comments |
|---|---|---|---|
| Number of Channels | 4 | ||
| Maximum Data Rate | 2 Mbps | ||
| Supply Voltage Range | 2.25 V to 3.6 V | V | |
| Propagation Delay | 180 ns (at 3.3 V) | ns | |
| Output Rise/Fall Time | 2 ns (10% to 90%) | ns | |
| Common-Mode Transient Immunity | >40 kV/µs | kV/µs | Typical |
| Operating Temperature Range | -40°C to +125°C | °C | |
| Package Type | 16-lead QSOP | ||
| Isolation Voltage | 2.5 kV rms | kV | For 1 minute per UL 1577 |
Key Features
- Bidirectional communication capability
- High default output state
- Low power consumption: quiescent current per channel less than 10 µA (internal refresh enabled) and less than 1 µA (internal refresh disabled)
- Input glitch filter to protect against extraneous noise disturbances
- Low pulse width distortion (<8 ns)
- Compact 16-lead QSOP 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
- Intrinsic safety applications due to IECEx and ATEX certifications
Q & A
- What is the ADUM1440ARQZ-RL7 used for? The ADUM1440ARQZ-RL7 is used for general-purpose, low power multichannel isolation, SPI interfaces, and 4 mA to 20 mA loop process controls.
- What is the maximum data rate of the ADUM1440ARQZ-RL7? The maximum data rate is 2 Mbps.
- What is the operating temperature range of the ADUM1440ARQZ-RL7? The operating temperature range is from -40°C to +125°C.
- What package type does the ADUM1440ARQZ-RL7 come in? It comes in a 16-lead QSOP package.
- What are the regulatory approvals for the ADUM1440ARQZ-RL7? It is approved by UL 1577, CSA, VDE, IECEx, and ATEX intrinsic safety certifications.
- How does the ADUM1440ARQZ-RL7 compare to optocoupler devices? It offers superior performance characteristics, including higher speed and lower power consumption compared to optocoupler devices.
- What is the common-mode transient immunity of the ADUM1440ARQZ-RL7? The common-mode transient immunity is greater than 40 kV/µs typical.
- Does the ADUM1440ARQZ-RL7 support bidirectional communication? Yes, it supports bidirectional communication.
- What is the supply voltage range for the ADUM1440ARQZ-RL7? The supply voltage range is from 2.25 V to 3.6 V.
- How much current does the ADUM1440ARQZ-RL7 consume per channel? The quiescent current per channel is less than 10 µA (internal refresh enabled) and less than 1 µA (internal refresh disabled).
