ADUM2201BRIZ

Common Mode Transient Immunity (Min):	25kV/µs
Base Part Number:	ADUM2201
Supplier Device Package:	16-SOIC-IC
Package / Case:	16-SOIC (0.295", 7.50mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 105°C
Voltage - Supply:	3 V ~ 5.5 V
Rise / Fall Time (Typ):	2.5ns, 2.5ns
Pulse Width Distortion (Max):	3ns
Propagation Delay tpLH / tpHL (Max):	50ns, 50ns
Data Rate:	10Mbps
Series:	iCoupler®
Voltage - Isolation:	5000Vrms
Channel Type:	Unidirectional
Inputs - Side 1/Side 2:	1/1
Number of Channels:	2
Isolated Power:	No
Type:	General Purpose
Technology:	Magnetic Coupling
Part Status:	Active
Packaging:	Tube

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Digital Isolators

Digital isolators are becoming increasingly popular for their ability to provide electrical isolation between two circuits while allowing high-speed digital communication between them. The popular ADUM2201BRIZ digital isolator is a bi-directional device that operates using digital isolator principles.

ADUM2201BRIZ Application Field

The key application field of the ADUM2201BRIZ comprises industrial and automotive applications. The digital isolator can be employed in measurements and motor control in industrial automation, factory automation, and in other industries, such as energy management. It is also used in actuators in automotive applications, where it provides isolation between the control and actuation lines.

ADUM2201BRIZ Working Principle

The ADUM2201BRIZ works on the principle of an opto-isolator, which consists of a light-emitting diode (LED) and a phototransistor. When forward-biased, the LED emits light which is detected by the phototransistor, and a small current flows across the opto-isolator. This small current is then amplified to provide the required digital communication between both the circuits.The ADUM2201BRIZ digital isolator uses a unique combination of CMOS, digital signal (DS) and charge-coupled (CC) technique to achieve high reliability and isolation performance. Its CMOS Schmitt-trigger ‘input’ provides a high common-mode rejection and a low-voltage output-low which is resistant to noise and switch bounce.The DS and CC techniques in the ADUM2201BRIZ provide isolation of up to 4.2kV rms. The DS technique senses the digital signal switching points and adjusts the CC gaps accordingly, providing robust isolation and improved signal integrity. It also provides high-speed switching of up to 25MHz, with a propagation delay of a maximum of 8µs.The ADUM2201BRIZ digital isolator also has ESD protection of ±15kV air and ±8kV contact, as well as temperature and surge protection, making it highly reliable under extreme conditions.

Conclusion

The ADUM2201BRIZ digital isolator has gained popularity for its application in motor control and measurements in the industrial and automotive sectors. It operates on the principles of opto-isolator, which, combined with its CMOS, DS and CC techniques, provide an industry-leading isolation performance of up to 4.2kV rms. The digital isolator is also highly reliable under extreme conditions, making it the ideal choice for applications requiring electrical isolation and high-speed digital communication.

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