ADUM3154BRSZ-RL7

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Digital Isolators

Digital isolators are widely used to protect connected system components from each other in order to improve safety and reliability. Digital isolators transfer signals between two circuitry domains, by electrically isolating those two circuits from each other. They do this by preventing a current conduction path from one circuit to the other. The ADUM3154BRSZ-RL7 is a high-speed digital isolator, which supports data rates up to 10 MHz.

Application Areas

The ADUM3154BRSZ-RL7 digital isolator is designed for applications where two circuits need to be isolated. Common applications of digital isolators include power supplies and motor control, industrial automation and process control, telecom and networking, medical devices, and test and measurement equipment.For example, in industrial automation and process control, it can be used to eliminate ground loops and prevent surges or electrostatic discharges from causing any type of damage to other circuitry. In medical devices, digital isolators can be used to provide signal isolation between patient monitoring systems and the rest of the circuitry which is directly connected to the patient.

Working Principle

Digital isolators are based on the principle of transformer isolation. A transformer isolates two electrically interconnected circles by providing electromagnetic coupling between them, while blocking direct current paths. The ADUM3154BRSZ-RL7 digital isolator uses optocouplers and an integrated transformer. An optocoupler is an electrically isolating device that consists of an LED on one side, and a photo detector on the other. An LED-connected IC then lights up the LED when power is supplied, and the photo detector detects the light and turns it into an electrical signal. The integrated transformer then passes the signal from one side to the other.

Conclusion

The ADUM3154BRSZ-RL7 digital isolator is a high-speed digital isolator that can be used in many applications. Its working principle is based on the principle of transformer isolation, using an optocoupler and an integrated transformer to pass signals from one side to the other with complete electrical isolation.

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