SI8422AD-D-ISR Isolators

Series:	Automotive, AEC-Q100
Packaging:	Tape & Reel (TR)
Part Status:	Active
Technology:	Capacitive Coupling
Type:	General Purpose
Isolated Power:	No
Number of Channels:	2
Inputs - Side 1/Side 2:	1/1
Channel Type:	Unidirectional
Voltage - Isolation:	5000Vrms
Common Mode Transient Immunity (Min):	20kV/µs
Data Rate:	1Mbps
Propagation Delay tpLH / tpHL (Max):	35ns, 35ns
Pulse Width Distortion (Max):	25ns
Rise / Fall Time (Typ):	2ns, 2ns
Voltage - Supply:	2.7 V ~ 5.5 V
Operating Temperature:	-40°C ~ 125°C
Mounting Type:	Surface Mount
Package / Case:	16-SOIC (0.295", 7.50mm Width)
Supplier Device Package:	16-SOIC

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Digital Isolators: SI8422AD-D-ISR Application Field and Working Principle

Digital isolators are commonly used in a variety of electrical and electronic applications, as they provide electrical isolation between two circuits while allowing the two circuits to communicate. One such digital isolator is the Silicon Labs SI8422AD-D-ISR. This device is an industrial-grade isolator capable of operating on a supply voltage up to 24VDC and provides a high performance digital signal transmission with data rate up to 25 Mbps. This particular device is also resistant to electrical overstress, making it suitable for industrial grade applications.The working principle of the Silicon Labs SI8422AD-D-ISR digital isolator consists of two main components; the isolator core and the peripheral isolation circuitry. The isolator core is made up of three parts: the electrical switch, the galvanic isolator and the insulation element. The switch is used to route signals between two sides of the circuit and when the switch is activated the insulation element provides electrical isolation between the two circuits. The galvanic isolator ensures that only the signal is transferred across the isolated path and not the power supply.The peripheral isolation circuitry is made up of an integrated transformer-coupled signal path with a matched capacitor network that helps to reduce noise and signal distortion. The capacitors also work to ensure that the signal is routed to the correct places. The integrated signal path also helps to stabilize the signal by reducing any kind of RF noise generated during the transmission process.This device can be used in a wide range of applications, from industrial communication systems to medical and industrial control systems. It is especially useful in applications that require robust electrical isolation, such as automotive systems, where a high level of isolation is required in order to protect sensitive components from outside interferences.The advantage of the SI8422AD-D-ISR digital isolator is that it provides an increased level of robustness to any system, thanks to its high level of noise immunity and its ability to cope with a wide range of signals. This makes it the ideal choice for applications such as medical systems, where it is essential to ensure the reliability of the system. Additionally, it provides a high degree of scalability, meaning that even if the system needs to be upgraded in the future, the same device can be used.In conclusion, the Silicon Labs SI8422AD-D-ISR digital isolator is a versatile and high-performance digital isolator suitable for a wide range of applications. It provides a robust electrical isolation between two circuits, enabling them to communicate safely and efficiently, even in extreme conditions. Its integrated signal path also reduces any kind of RF noise interference, making it ideal for medical and industrial control applications.

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