SI8621BT-IS

Common Mode Transient Immunity (Min):	60kV/µs
Supplier Device Package:	16-SOIC
Package / Case:	16-SOIC (0.295", 7.50mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Voltage - Supply:	2.5 V ~ 5.5 V
Rise / Fall Time (Typ):	2.5ns, 2.5ns
Pulse Width Distortion (Max):	4.5ns
Propagation Delay tpLH / tpHL (Max):	13ns, 13ns
Data Rate:	150Mbps
Series:	Automotive, AEC-Q100
Voltage - Isolation:	5000Vrms
Channel Type:	Unidirectional
Inputs - Side 1/Side 2:	1/1
Number of Channels:	2
Isolated Power:	No
Type:	General Purpose
Technology:	Capacitive Coupling
Part Status:	Active
Packaging:	Tube

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Digital Isolators

Digital isolators are electronic components that use galvanic isolation to provide electrical insulation between two or more circuits. This type of insulation is necessary for preventing the transmission of noise, radio interference, and damage to the system caused by over-voltage and static electricity. SI8621BT-IS is an isolation component which is used in various applications for providing galvanic isolation. It is typically used for providing galvanic isolation in communication systems to reduce the amount of digital noise and errors in transmission.

SI8621BT-IS Application Field

SI8621BT-IS is primarily used for providing galvanic isolation in communication systems. The component helps in reducing noise and boosting signal integrity by providing isolation between circuits. This isolator can also be used for applications such as automotive and industrial control field bus systems, data acquisition systems, numerical control systems, and digital audio. The SI8621BT-IS device can be used in applications with operating temperatures ranging from -40 °C to +125 °C.

SI8621BT-IS Working Principle

The SI8621BT-IS device uses digital isolation techniques to provide efficient isolation between circuits. The device is composed of two sections, isolation driver and isolation receiver. The transmission of data between the driver and receiver is done via an opto-coupler which provides direct galvanic isolation between the two. The driver side is basically a line or current driver whereas the receiver side has additional protection circuitry.The driver side of the isolator uses a line driver type output stage which sends out differential signals onto the opto-coupler. The signal gets converted from electrical to optical energy via the opto-coupler before it is transferred to the receiver side. The receiver side of the device contains a receiver section with additional protection components to ensure safety. The signal received is digitized and compared to the data present at the receiver input. If a valid signal is received, it is latched to provide the output data which is amplified by the buffer stage.

Conclusion

The SI8621BT-IS device is an effective digital isolation component which helps in providing better signal integrity and reducing digital noise. The device is mainly used for providing galvanic isolation in communication systems. It is composed of both driver and receiver sections which are connected via an opto-coupler. The device is an effective solution for providing galvanic isolation in applications with operating temperatures ranging from -40 °C to +125 °C.

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