ADUM7442CRQZ-RL7

Common Mode Transient Immunity (Min):	15kV/µs
Base Part Number:	ADUM7442
Supplier Device Package:	16-QSOP
Package / Case:	16-SSOP (0.154", 3.90mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 105°C
Voltage - Supply:	3 V ~ 5.5 V
Rise / Fall Time (Typ):	2ns, 2ns
Pulse Width Distortion (Max):	5ns
Propagation Delay tpLH / tpHL (Max):	50ns, 50ns
Data Rate:	25Mbps
Series:	iCoupler®
Voltage - Isolation:	1000Vrms
Channel Type:	Unidirectional
Inputs - Side 1/Side 2:	2/2
Number of Channels:	4
Isolated Power:	No
Type:	General Purpose
Technology:	Magnetic Coupling
Part Status:	Active
Packaging:	Tape & Reel (TR)

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ADUM7442CRQZ-RL7 Digital IsolatorsDigital isolators utilize isolation technology to create an efficient data communication link with a safety rated barrier between two circuits. ADUM7442CRQZ-RL7 is a kind of digital isolator and its application field and working principle are introduced in this article.ApplicationADUM7442CRQZ-RL7 isolators are mainly used for electrical safety in digital systems, providing reliable isolation with wide operating temperature range, fast signal transfer, and low power consumption. It is widely used in digital circuits, controlling systems, medical systems, factory automation, automotive systems, and photovoltaic systems. With the I2C-to-I2C protocol, it supports both master and slave operations, mean while offering great solution for voltage safety, noise immunity and quality control.FeaturesADUM7442CRQZ-RL7 isolators provide a UL-approved reinforced insulation with upto 15 kV/μs common-mode transient immunity, 1000 VRMS isolation and 4 kV ESD protection. It is capable of transferring digital signals up to 3.4 Mbits/s with 0.6 mA of supply current. Besides, it offers many options like bus hold, timeout function, hot swap capability and basic reset.Working PrincipleThe basic idea of Digital Isolator is similar to Optical Isolator: isolate two electrical circuits from each other by making use of the physical barrier of insulator materials. With the Digital Isolator ADUM7442CRQZ-RL7, an optical transmitter and receiver pair serves as the interface between two circuits, with two integrated analog front ends on each side, providing isolation for the signals between the two circuits. The device operates on direct current so that power is passed between circuits while data signals are transmitted optically. The interruption of the electric conduction between two circuits eliminates possible sparks, such as arcs and electrical overloads. Additionally, the Digital Isolator provides necessary signal conversions and impedance matching, insuring the compatibility between two systems without interference.ConclusionADUM7442CRQZ-RL7 is a lightweight and robust digital isolator, which is specially designed to meet the requirements of safety and protection. With a variety of application fields, it could be employed to any system or equipment where isolation security is needed. ADUM7442CRQZ-RL7 is an ideal solution for its reliable data communication interface as well as excellent electrical isolation features.

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