Digital isolators enhance signal integrity

Diodes’ API772x RobustISO series of dual-channel digital isolators protects sensitive components in high-voltage systems. The devices provide reliable, robust isolation for digital control and communication signals in industrial automation, power systems, and data center power supplies.

Comprising six variants, the API772x series meets reinforced and basic isolation requirements across various standards, including VDE, UL, and CQC. The parts have a 5-kV_RMS isolation rating for 1 minute per UL 1577 and an 8-kV_PK rating per DIN EN IEC 60747-17 (VDE 0884-17). Maximum surge isolation voltage is 12.8 kV_PK. According to Diodes’ isolation reliability calculations, the devices achieve a predicted operational lifetime exceeding 40 years, based on a capacitive isolation barrier more than 25 µm thick.

RobustISO digital isolators support a range of transmission protocols at data rates up to 100 Mbps. They feature a minimum common-mode transient immunity of 150 kV/µs, ensuring reliable signal transmission in noisy environments. Operating from a 2.5-V to 5.5-V supply, the devices typically draw 2.1 mA per channel at 100 Mbps. The series offers flexible digital channel-direction configurations and default output levels to accommodate diverse design requirements.

Prices for the API772x devices start at $0.46 each in lots of 1000 units.

RobustISO API772x product page

Diodes

The post Digital isolators enhance signal integrity appeared first on EDN.