SI8621AB-B-IS

Common Mode Transient Immunity (Min):	35kV/µs
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:	2.5 V ~ 5.5 V
Rise / Fall Time (Typ):	2.5ns, 2.5ns
Pulse Width Distortion (Max):	25ns
Propagation Delay tpLH / tpHL (Max):	35ns, 35ns
Data Rate:	1Mbps
Series:	Automotive, AEC-Q100
Voltage - Isolation:	2500Vrms
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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Introduction of SI8621AB-B-IS Digital Isolators

The SI8621AB-B-IS is a digital isolator from Silicon Labs featuring robust isolation performance and high noise immunity. This digital isolation device enables reliable, secure communication between two independent nodes while protecting against unwanted noise, common-mode interference, and transient overvoltages. It also provides either galvanic or transformer-based isolation, depending on the configuration.

Application Field

The SI8621AB-B-IS is designed for use in a variety of applications, such as home appliances, industrial automation, data acquisition systems, communications systems, security systems, and medical devices. It can be used in applications where secure isolation of data and noise immunity are critical to ensuring reliable operation. The digital isolator also provides a robust signal transmission solution for board‑to‑board and system‑on‑chip (SoC) applications.

Operating Principle

The SI8621AB-B-IS works on the principle of opto-isolation. This device utilizes a light emitting diode (LED) and light detector to transmit signals between two independent nodes. The LED emits a modulated light signal which is then detected by the light detector. This ensures secure data transmission between the nodes, as the light signal propagates along an optical pathway. Additionally, the digital isolator isolates the two nodes and provides enhanced noise immunity due to its DC, transient, and common-mode isolation characteristics.

Key Features & Advantages

The SI8621AB-B-IS features low propagation delay and fast transition times, which enable quick and accurate signal transmission. Additionally, it has a wide operating temperature range, from -40°C to +85°C, and a low power consumption of 130mW. The device also has high common-mode and transient voltage protection of 2.5kV. This ensures that the device can protect against the effects of ESD, EFT, and surges. The ¬¬SI8621AB-B-IS has a ¬¬number of advantages over traditional digital isolators, including lower power consumption, faster speed, wider temperature range, higher transient and common-mode immunity, and increased lifetime. Additionally, the device is capable of providing up to 6000V of optical isolation for enhanced data security.

Conclusion

The Silicon Labs SI8621AB-B-IS digital isolator is a reliable solution for secure data transmission. It features opto-isolation technology, low power consumption, high speed, wide temperature range, and excellent immunity to noise and transient overvoltages. The digital isolator is ideal for use in a variety of applications, including home appliances, industrial automation, data acquisition systems, communications systems, security systems, and medical devices.

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