AD261BND-4

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Digital isolators are devices used to provide electrical isolation between two systems. The AD261BND-4 is a monolithic digital isolator designed specifically to provide bidirectional isolating protection for data lines in battery–powered systems. The device offers a typical delay of 8 μs over an operating temperature range of –40° to +125°C. It is immune to electrical transients, and can withstand maximum working voltages up to 2.5 KV.

The AD261BND-4 uses high frequency, capacitively-coupled transmission lines to enable bidirectional data transfer between two circuits. This isolator is designed for applications that require very high data rates, such as in digital data links. The device provides EMI protection, while also preventing the propagation of ground potential differences between the circuits. This makes the AD261BND-4 ideal for use in battery–powered systems with high speed data transfer between both sides of the isolation barrier.

The AD261BND-4 consists of a control logic circuit, a clamping circuit, and a clamping control circuit. The control logic circuit is responsible for determining the logic levels of the connected lines and encoding them into serial data. The clamping circuit is used to block the voltage created by the control logic circuit from propagating to the other side of the device. Finally, the clamping control circuit is responsible for the control of the clamping operation.

The AD261BND-4 features a low current operating mode that reduces current consumption to only 2.5 mA. This allows the device to be used in battery–powered systems with minimal impact on battery life. Additionally, the device provides accurate timing of data transfer operations, with a typical delay of 8 μs over an operating temperature range of -40° to +125°C. This allows for fast and reliable data transfer between the two systems connected to each side of the isolation barrier.

In summary, the AD261BND-4 is an ideal digital isolator for high speed data transfer applications in battery–powered systems. It offers excellent data accuracy and timing, while also providing robust protection from electrical transients and ground loops. This digital isolator offers low power consumption, while also providing flexible operating temperature range allowing for reliable data transfer even when operated in extreme environmental conditions.

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