ADUM230D0BRIZ-RL

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Digital isolators provide an important safety feature for communications and industrial systems. They help prevent electrical noise and surges in the system, maintain signal integrity, and reduce the risk of shorts and other destructive conditions. ADUM230D0BRIZ-RL Digital Isolator is a passive digital isolator that provides galvanic isolation up to 5000 Vrms (30 kV/μs) for signal-conditioning applications. It uses a patented Monolithic Microwave Integrated Circuit (MMIC) technology that enables low power consumption and low propagation delay. In this article, we will discuss its application field and working principle.

Application Fields

The ADUM230D0BRIZ-RL digital isolator can be utilized in a wide variety of signal-conditioning applications that require electrical isolation. Form industrial automation, automotive systems, motor control systems, medical equipment, safety critical systems, and power supplies and converters to high-speed communication systems like Ethernet, USB, CAN, and CAN-FD, this isolator has the functionality and performance to meet the requirements of these applications.

The device supports both unidirectional and bidirectional signal isolation. It is available in a small 6 mm x 4 mm 6 Ld SOIC package and operates over a supply voltage range of 1.65 V to 5.5 V. It has a propagation delay of 6.2 ns (max) and a data rate of 2.5 Mbps. The output part of the digital isolator is designed to interface directly with CMOS logic circuits, which allows for easier integration and flexibility.

Working Principle

Essentially, the ADUM230D0BRIZ-RL isolator creates a repeatable delay between the two signal lines, thus breaking the electrical continuity between the two signal lines. This eliminates the possibility of electrical noise and surge entering and contaminating the system. The basic components of the device include a transmitter, a receiver, an isolation barrier, and a control circuitry. The control circuitry is in charge of monitoring and controlling the communication between the two signal lines. It is also responsible for generating a signal to activate the isolation barrier.

The transmitter part of the digital isolator uses a zero-power switching technique, which essentially uses electrical signals to activate and deactivate the transmitter. This technique allows for low power consumption and low propagation delay. The receiver, on the other hand, is designed to provide an output signal stable over the entire supply voltage range. As a result, it is able to provide a more reliable signal than traditional receivers.

Conclusion

In conclusion, the ADUM230D0BRIZ-RL digital isolator offers a high level of electrical isolation with low power consumption and fast propagation delay. It can be used in a wide variety of signal-conditioning applications including industrial automation, automotive systems, motor control systems, medical equipment, safety critical systems, and power supplies and converters. Thanks to its low power consumption and fast propagation, it is able to provide a reliable signal that is free from electrical noise and surge.

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