Smallest four channel ADuM744x digital isolators from Analog Devices

Analog Devices has brought to the market a smallest ADuM744x digital isolators can isolate four channels of data and power, while reducing board space up to 70 percent and cutting costs by 20 percent. This is especially as well as effective for those applications that need only up to a 1-kV rms isolation rating and for cost-sensitive designs for which small size is more critical than isolation requirements.

The ADuM744x family of digital isolators, comprised of the ADuM7440, ADuM7441, and ADuM7442, is available in a variety of configurations with multiple channel-direction options and data-rate options ranging from 1 Mbps (megabits per second) to 25 Mbps. The devices offer a 3.0-V to 5.5-V supply voltage range, which provides compatibility with lower voltage systems and enables voltage translation across the isolation barrier and it offer very low power consumption while providing low pulse-width distortion. Each product also features an input glitch filter to protect against extraneous noise disturbances. Designed specifically for size and cost savings, the ADuM744x are competing 1-kV rms digital isolators.

The iCoupler digital isolation technology products, which include 2.5-kV rms and 5-kV rms isolation with almost 300 million channels deployed and based on chip-scale transformers, rather than the LEDs and photodiodes found in optocouplers. By fabricating the transformers directly on-chip using wafer-level processing, iCoupler channels can be integrated with each other and other semiconductor functions at low cost. iCoupler transformers with 2.5-kV rms or greater isolation ratings employ a 20-µm layer of high-breakdown polyimide. In contrast, the new 1-kV rms isolation rated products use a lower cost, thinner, SiO2 insulator that has limited isolation capability compared to the 20-µm thick polyimide insulator.

Package: 16-lead QSOP package.

Price: Each $1.50 for 1k pieces.

Availability: Now
For further details visit www.analog.com/pr/ADuM744x