Overview
The ADUM7440CRQZ is a quad-channel digital isolator produced by Analog Devices Inc. This component utilizes Analog Devices' iCoupler® technology, which combines high-speed CMOS and monolithic air core transformer technologies. This results in outstanding performance characteristics that surpass those of optocoupler devices and other integrated couplers. The ADUM7440CRQZ is UL recognized, meeting the UL 1577 standard for 1000V rms for 1 minute, and operates over a wide temperature range of -40°C to +105°C.
Key Specifications
| Specification | Value |
|---|---|
| Number of Channels | 4 |
| Maximum Data Rate | 25 Mbps |
| Maximum Propagation Delay | 50 ns at 5V |
| Maximum Pulse Width Distortion | 5 ns |
| Operating Temperature | -40°C to +105°C |
| Supply Voltage Range | 3.0 V to 5.5 V |
| Isolation Voltage | 1000 V rms |
| Package Type | 16-lead QSOP |
| Common-Mode Transient Immunity | >15 kV/μs |
Key Features
- Bidirectional Communication: Supports bidirectional data transfer.
- 3V/5V Level Translation: Compatible with both 3V and 5V systems, enabling voltage translation across the isolation barrier.
- High Common-Mode Transient Immunity: Greater than 15 kV/μs, ensuring robust performance in noisy environments.
- Low Power Consumption: Consumes significantly less power compared to other isolators, with maximum current per channel varying by data rate.
- Input Glitch Filter: Protects against extraneous noise disturbances.
- Output Default High Logic State: Ensures a default high logic state in the absence of input power.
Applications
- General-Purpose, Multichannel Isolation: Suitable for various isolation needs in multiple channels.
- SPI Interface/Data Converter Isolation: Ideal for isolating SPI interfaces and data converters.
- RS-232/RS-422/RS-485 Transceivers: Used in serial communication interfaces.
- Industrial Field Bus Isolation: Applies to industrial field bus systems requiring high isolation and reliability.
Q & A
- What is the ADUM7440CRQZ used for?
The ADUM7440CRQZ is a quad-channel digital isolator used for general-purpose, multichannel isolation, SPI interface/data converter isolation, RS-232/RS-422/RS-485 transceivers, and industrial field bus isolation.
- What is the maximum data rate of the ADUM7440CRQZ?
The maximum data rate is 25 Mbps.
- What is the operating temperature range of the ADUM7440CRQZ?
The operating temperature range is -40°C to +105°C.
- What is the isolation voltage rating of the ADUM7440CRQZ?
The isolation voltage rating is 1000 V rms.
- What package type does the ADUM7440CRQZ come in?
The ADUM7440CRQZ comes in a 16-lead QSOP package.
- Does the ADUM7440CRQZ support bidirectional communication?
- What is the common-mode transient immunity of the ADUM7440CRQZ?
The common-mode transient immunity is greater than 15 kV/μs.
- Is the ADUM7440CRQZ UL recognized?
- What is the supply voltage range for the ADUM7440CRQZ?
The supply voltage range is 3.0 V to 5.5 V.
- Does the ADUM7440CRQZ have an input glitch filter?
