ISO7820FDWWR

Digital isolators are interfaces that use an isolation barrier to transfer digital signals between parts of circuits which must remain completely separate for safety or noise immunity reasons. The particular architecture used in the device determines the amount of current it can sink or draw with its outputs, whether it is non-latching or latched, the degree of common-mode rejection available (which determines the suitability of the device for the application) and the speed of operation.

ISO7820FDWWR is a type of digital isolator that uses the digital field of driven isolation and working principle (DFDWRP) technology along with applied magnetic principles to prevent digital signals from moving between the isolated portions of the circuit. It can be used to isolate various high-speed signals in a wide range of industrial, consumer, automotive, and power management applications.

The ISO7820FDWWR digital isolator has a wide operating range, working from -40° to +85°C while providing up to 2000V RMS isolation. It is also designed to have improved common-mode rejection compared with traditional digital isolators, which helps reduce errors in noise-sensitive applications. The device also has a small footprint with a low-voltage switching input and output voltage levels, making it ideal for space-constrained applications. Its features also include a low breakdown voltage, a low maximum capacitance, and high ESD protection of 8kV (in HBM).

The operation of the ISO7820FDWWR digital isolator is enabled by its driving field source and power devices, which are designed to work in tandem with one another to create a magnetic field to isolate and transfer digital signals from the source device to the destination. The source device contains a series of gallium nitride (GaN) integrated circuits which have the unique ability of driving the isolation field by adjusting the resistance and amplitude modulation of the field. The power devices are complementary metal-oxide-semiconductor (CMOS) switches which are responsible for controlling the transfer of energy between the source device and the destination.

Once the digital isolator is enabled, its functions are to isolate the digital signals and prevent them from crossing over into the isolated portion of the circuit. It does this by converting the digital output from the source to a high frequency signal which is then passed through the digital isolator, providing a barrier which restricts the current from moving between the two parts of the circuit.

In summary, the ISO7820FDWWR digital isolator is a powerful and efficient device which is well-suited for use in a wide range of high-speed digital signal isolation applications. Its features include a wide operating range, high ESD protection, low breakdown voltage and low maximum capacitance, as well as improved common-mode rejection compared with traditional digital isolators.