SI8631AB-B-IS

Common Mode Transient Immunity (Min):	35kV/µs
Data Rate:	1Mbps
Propagation Delay tpLH / tpHL (Max):	35ns, 35ns
Pulse Width Distortion (Max):	25ns
Rise / Fall Time (Typ):	2.5ns, 2.5ns
Voltage - Supply:	2.5 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
Series:	Automotive, AEC-Q100
Packaging:	Tube
Part Status:	Active
Technology:	Capacitive Coupling
Type:	General Purpose
Isolated Power:	No
Number of Channels:	3
Inputs - Side 1/Side 2:	2/1
Channel Type:	Unidirectional
Voltage - Isolation:	2500Vrms

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Introduction
Digital Isolators are components used in a wide range of applications where the isolation of a circuit from another is required. The SI8631AB-B-IS Digital Isolator is one such component that offers enhanced performance in isolating different circuits while providing low on-resistance and no leakage current. This device is an industry standard for isolation, and can be used in many different applications such as power supplies, automotive, instrumentation, avionics, etc.
Features
The SI8631AB-B-IS Digital Isolator is a full-featured isolator that combines key features such as isolation voltage ratings, low on-resistance, no leakage current, and EMI/RFI protection. It has a wide operating temperature range of -55°C to 125°C. The package size of this device is SO-14, making it easy to use in a variety of applications that require high isolation voltages. The digital isolator has an isolation voltage rating of 500V, and a maximum switching frequency of 250Khz. It has an on-resistance range of 0.5Ω – 50Ω, and a low leakage current of 0.1µA. The device also provides EMI/RFI protection with a shielding effect of up to 120dB.
Application Field
The SI8631AB-B-IS Digital Isolator is suitable for many applications that require isolation between two circuits, such as in power supplies, automotive, instrumentation, avionics, and more. This device is especially suitable for applications that require high isolation voltages and low on-resistance. It has a wide operating temperature range (-55°C to 125°C) and can be used in harsh environments. The digital isolator is also suitable for industrial control systems where isolation needs to be maintained while ensuring safety and reliability.
Working Principle
The SI8631AB-B-IS Digital Isolator works on the principle of capacitive-coupled transmission. A capacitive-coupled transmission occurs when two conductive plates separated by an insulating layer, such as a plastic film, act as an electrical capacitor. This device uses a dielectric material between the two metal foils, which creates a capacitive transmission path. When electrical signals are sent through one of the foils, it creates a capacitive effect on the other layer. The capacitive-coupled transmission creates an isolating barrier between the two circuits, allowing for the transfer of digital signals without any unwanted electrical interference. The SI8631AB-B-IS Digital Isolator is designed to provide low on-resistance and no leakage current, which makes it suitable for many different applications.
Conclusion
The SI8631AB-B-IS Digital Isolator is a useful device for many applications that require isolation of circuits. It offers features such as high isolation voltage ratings, low on-resistance, no leakage current, and EMI/RFI protection. This device has a wide operating temperature range and is suitable for use in many industrial control systems. The digital isolator uses capacitive-coupled transmission to provide a reliable and safe isolation barrier between two circuits, allowing for the transmission of digital signals without any electrical interference.

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