Overview
The ADUM1446ARQZ-RL7 is a quad-channel, micropower digital isolator from Analog Devices Inc., based on the iCoupler® technology. This component combines high-speed CMOS and monolithic air core transformer technologies, offering superior performance compared to optocoupler devices. It is designed for low power, multichannel isolation and is suitable for a variety of applications requiring high common-mode transient immunity and low propagation delay.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| Data Rate | - | 2 Mbps | - | - | Within pulse-width distortion (PWD) limit |
| Propagation Delay | 80 ns | 180 ns | - | 50% input to 50% output | |
| Maximum Pulse Width | 500 ns | - | - | Within PWD limit | |
| Pulse-Width Distortion | - | 8 ns | - | |tPLH − tPHL| | |
| Input Threshold Logic High | 0.7 VDDx1 | - | - | - | |
| Input Threshold Logic Low | 0.3 VDDx1 | - | - | - | |
| Output Voltages Logic High | VDDx1 − 0.1 | - | 3.3 V | IOUTx = −20 µA, VIx = VIxH | |
| Output Voltages Logic Low | 0.0 | - | 0.1 V | IOUTx = 20 µA, VIx = VIxL | |
| Operating Temperature Range | −40°C | - | +125°C | - | |
| Package Style | - | - | - | 16-lead QSOP | |
| Isolation Voltage | - | - | 2.5 kV rms | For 1 minute per UL 1577 |
Key Features
- Ultralow power operation with quiescent current as low as 0.3 µA per channel (refresh disabled) and 5.6 µA per channel (refresh enabled) at 3.3 V.
- Bidirectional communication with data rates up to 2 Mbps (NRZ).
- High common-mode transient immunity of >25 kV/µs.
- High temperature operation up to 125°C.
- Small 16-lead QSOP package, saving board space compared to wide body SOIC packages.
- Input glitch filter to protect against extraneous noise disturbances.
- Safety and regulatory approvals including UL 1577, CSA, VDE, and IECEx/ATEX intrinsic safety certifications.
Applications
- General-purpose, low power multichannel isolation.
- Low power peripheral interfaces such as SPI.
- 4mA to 20mA loop process controls.
- Industrial automation and control systems.
- Medical devices requiring high isolation and low power consumption.
- Aerospace and defense applications where high reliability and safety are critical.
Q & A
- What is the ADUM1446ARQZ-RL7 used for?
The ADUM1446ARQZ-RL7 is used for general-purpose, low power multichannel isolation, particularly in applications requiring high common-mode transient immunity and low propagation delay. - What is the maximum data rate of the ADUM1446ARQZ-RL7?
The maximum data rate is up to 2 Mbps (NRZ). - What is the operating temperature range of the ADUM1446ARQZ-RL7?
The operating temperature range is −40°C to +125°C. - What package style does the ADUM1446ARQZ-RL7 come in?
The component is packaged in a 16-lead QSOP package. - What are the safety and regulatory approvals for the ADUM1446ARQZ-RL7?
The component has approvals including UL 1577, CSA, VDE, and IECEx/ATEX intrinsic safety certifications. - How does the ADUM1446ARQZ-RL7 handle common-mode transient immunity?
The component offers high common-mode transient immunity of >25 kV/µs. - What is the quiescent current of the ADUM1446ARQZ-RL7?
The quiescent current is as low as 0.3 µA per channel (refresh disabled) and 5.6 µA per channel (refresh enabled) at 3.3 V. - Does the ADUM1446ARQZ-RL7 support bidirectional communication?
Yes, it supports bidirectional communication. - What is the isolation voltage of the ADUM1446ARQZ-RL7?
The isolation voltage is 2.5 kV rms for 1 minute per UL 1577. - How does the ADUM1446ARQZ-RL7 protect against noise disturbances?
The component includes an input glitch filter to protect against extraneous noise disturbances.
