SI8402AB-B-ISR

Common Mode Transient Immunity (Min):	25kV/µs (Typ)
Supplier Device Package:	8-SOIC
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Voltage - Supply:	3 V ~ 5.5 V
Rise / Fall Time (Typ):	--
Pulse Width Distortion (Max):	--
Propagation Delay tpLH / tpHL (Max):	--
Data Rate:	--
Series:	--
Voltage - Isolation:	2500Vrms
Channel Type:	Bidirectional, Unidirectional
Inputs - Side 1/Side 2:	2/1
Number of Channels:	2
Isolated Power:	No
Type:	I²C
Technology:	Capacitive Coupling
Part Status:	Not For New Designs
Packaging:	Tape & Reel (TR)

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Introduction

Digital Isolators are a type of isolation technology used to create an electrical barrier between two or more circuits in order to maintain signal integrity and reduce the risk of surges and other interferences. The SI8402AB-B-ISR digital isolation module is one of the highest performance digital isolation solutions available. It offers a reliable, high-speed, low-power design, with an extended temperature range and a wide range of options for user customization.

Applications of the SI8402AB-B-ISR

The SI8402AB-B-ISR digital isolator enables communication between electrical systems with different ground potentials, allowing data communication interface networks in industrial, medical and automotive applications. It is especially suited for automotive applications where higher temperatures and humidity are present.It can be used for communication of pulse signals (such as CAN, LIN, and UART), LVDS data link isolation, and differential signal transmissions. The module also features an LED indicator to display the status of the data communication.

Working Principle of the SI8402AB-B-ISR

The SI8402AB-B-ISR digital isolator works on the principles of transformer coupled circuits. It uses two coils – one primary and one secondary – to create an isolated, signal-zero-crossing zone between the input and output of the module.The primary and secondary coils are magnified by a transformer ratio, creating an amplified signal across a physical barrier between two systems. With an extended temperature range, this module also features diagnostics and built-in safety features to ensure signal integrity.The SI8402AB-B-ISR module uses an efficient switched-capacitor network (SCN) to generate a low-power transformer-coupled circuit. The SCN is a zero-voltage-switched, high-performance circuit whose power consumption is well below 1 Watt.

Benefits

The main benefits of the SI8402AB-B-ISR digital isolator include:-Low power consumption-High speed signal transmission-High temperature and humidity tolerance-Flexible configuration options-LED indicator to provide data communication status-Diagnostic features and safety features for signal integrity

Conclusion

The SI8402AB-B-ISR digital isolation module is one of the highest performance digital isolation solutions available. It offers a reliable, high-speed, low-power design, with an extended temperature range and a wide range of options for user customization.The device has been designed for communication of pulse signals, LVDS data link isolation, and differential signal transmissions, as well as a range of other high-performance applications. With its zero-voltage-switched, high-performance circuit and extended temperature range, it is ideal for use in automotive applications where high temperatures and humidity may be present.

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