IL3285-3E

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Digital isolators are galore when it comes to the variety and features they provide. Digital isolators are typically used for drive, sensor, measurement, communication and power circuits when over-voltage and EMC protection is required. This article focuses on IL3285-3E application field and working principle.

IL3285-3E is an industrial type of ADI’s digital isolators series from Analog Devices. It is a single channel digital isolator, which includes an isolated voltage translator and receiver, along with a few other capabilities such as signal debounce and so on. The device’s features include strong insulation, low power consumption and long-term reliability. Moreover, it has 10 kV/µs transient immunity and comes with an embedded LED indicator for monitoring.

The IL3285-3E device primarily consists of two parts, the digital isolator and the power supply. The digital isolator consists of two parts, an isolator and a receiver. The isolator translates the input signal into an isolated output signal, isolating the signal from any external electrical noise or voltage surges. The receiver then receives this isolated signal and converts it into the same code as the input.

The device also includes a power supply, which is used to provide energy to the digital isolator. This power supply is typically in the form of a battery or other power source, such as an AC/DC converter. The power supply typically provides the necessary power to the device to ensure its proper functioning.

In terms of communication, the IL3285-3E device supports USB, RS-485, CAN, and LIN interfaces. Additionally, this device is suitable for industrial automation, automotive and motor control applications. It is also suitable for other applications such as remote sensing, remote control, process control, motion control, and data acquisition systems.

The working principle of the IL3285-3E is quite simple. The device takes in a digital output signal from one end and transfers it into an isolated signal on the other end. This signal is then received by the receiver and converted back into the same digital code as the input. The device relies on galvanic isolation to provide the level of voltage protection necessary for such applications.

In terms of performance, the IL3285-3E is quite impressive. It is capable of providing up to 5kV isolation, a maximum input signal frequency of 6 MHz, and a maximum bus voltage of 15V. Additionally, the device provides up to 5kV transient immunity and a di/dt between 0.25 mA/ms and 5 mA/ms.

In summary, the IL3285-3E is an industrial type digital isolator from ADI that is capable of providing strong insulation, low power consumption, and long-term reliability. It is also suitable for communication, remote sensing, and process control applications. Furthermore, it provides high-performance, including up to 5kV isolation, 6 MHz input signal frequency, and a maximum bus voltage of 15V.

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