ISO7421EDR Isolators

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Digital isolators are a form of electrical isolation which use signal or data conversion techniques to isolate one circuit from another. One of the main benefits of digital isolators is that they provide control to a system, while simultaneously isolating sensitive portions of the system from potential sources of electrical interference. ISO7421EDR is a popular digital isolator used in many applications, and it is important to understand its capabilities and how it works.

The ISO7421EDR is a dual-channel digital isolator that provides both input-to-output signal isolation and output-to-input signal isolation. It employs an ‘I2C’ interface which includes a send and receive bus. The two buses allow data and control signals to be transmitted between two isolated subsystems.

The receive bus is used to receive data from the output subsystem, such as an I/O port, analog-to-digital converter, or other device. The data is then encoded and transmitted across the receive bus, which isolates it from any potential interference. The send bus is used to transmit data from the input subsystem, such as a microcontroller or other device. This data is then encoded and transmitted across the send bus, which again isolates it from any potential interference.

The ISO7421EDR is designed to provide excellent electrical isolation between the input and output circuits. It is capable of isolating up to 8kV of isolation voltage, which provides excellent protection against common mode interference. It also features low quiescent current consumption, allowing it to be used in battery operated applications. Additionally, the ISO7421EDR is capable of operating at an extended temperature range of -40°F to +85°F (-40°C to +85°C), making it suitable for a wide variety of applications.

The ISO7421EDR digital isolator can be used in a variety of applications, including industrial automation, home automation, medical equipment, and automotive systems. In industrial automation, it can be used to ensure communication between two devices on a single bus. In home automation, it can be used to provide isolation between two components on a single bus. In medical equipment, it can be used to provide electrical isolation between two systems. Finally, in automotive systems, it can be used to protect a system from common mode interference.

The ISO7421EDR digital isolator is a versatile device that provides excellent electrical isolation between two systems. Its low quiescent current consumption and extended temperature range make it suitable for a wide range of applications. The I2C interface allows data and control signals to be transmitted between two isolated subsystems, ensuring reliable communication. With its excellent electrical isolation and wide operating temperature range, the ISO7421EDR is a great choice for a wide range of digital isolation applications.

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