ADUM5402WCRWZ-1RL

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Digital Isolators

ADUM5402WCRWZ-1RL is an integrated digital isolator with a voltage range of up to 10V DC. It is widely used in industrial, automotive, medical, and IT applications. The device consists of a two-part isolation package with a high temperature isolation channel, two control buses and an optional regulated output.

Isolation Package

ADUM5402WCRWZ-1RL is composed of two isolation sections; the high temperature isolator section (HIIS) and the low temperature isolator section (LTIS). The HIIS is designed to function properly in a temperature range of -40°C to 105°C (-40°F to 221°F). This section serves as the main isolator between the two control buses of the device and provides a barrier between the primary and secondary sides. The HIIS also allows for accurate impedance matching between the primary and secondary sides.

The LTIS section is designed for a temperature range of -40°C to 70°C (-40°F to 158°F). This section controls the connection between the control buses and the regulated output of the device. This connection can help regulate the signal level when powering a system with a 9V DC or higher voltage. The LTIS section of the device also provides an impedance matching between the control buses and the regulated output.

Control Buses

The two control buses of the device, the primary control bus (PCB) and the secondary control bus (SCB), operate in parallel to provide isolation between the input and output signals. The PCB consists of two signal lines that are used to carry the input signal and the SCB consists of two signal lines that are used to carry the output signal. These two buses are isolated from each other by a DC blocking layer and are connected to the HIIS and LTIS sections of the device.

The PCB and SCB are coupled through transformers which convert the digital or analog signals into differential output signals and provide the required isolation between them. The differential signal is then transmitted through the control buses of the device to the HIIS and LTIS sections for further conversion to the desired levels of voltage and current.

Regulated Output

The ADUM5402WCRWZ-1RL also has an optional regulated output that is connected to the LTIS section of the device. This regulated output helps ensure that the output signal is always within the desired voltage range. The output voltage can be adjusted by changing the voltages of the control buses. This feature is especially useful in applications that require higher than 9V DC for powering systems.

Conclusion

ADUM5402WCRWZ-1RL is a remarkable digital isolator with a decent voltage range of up to 10V DC. It consists of two isolation sections, two control buses and an optional regulated output. The device is ideal for industrial and automotive applications due to its wide range of operating temperatures and its ability to provide accurate impedance matching. Furthermore, its optional regulated output helps to maintain a consistent output signal.

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