ADUM1401ARWZ IC

Technical Specifications of ADUM1401ARWZ

Datasheet	ADUM1401ARWZ datasheet
Category	Isolators
Family	Digital Isolators
Manufacturer	Analog Devices Inc.
Series	iCoupler?
Packaging	Tube
Part Status	Active
Technology	Magnetic Coupling
Type	General Purpose
Isolated Power	No
Number of Channels	4
Inputs – Side 1/Side 2	3/1
Channel Type	Unidirectional
Voltage – Isolation	2500Vrms
Common Mode Transient Immunity (Min)	25kV/μs
Data Rate	1Mbps
Propagation Delay tpLH / tpHL (Max)	100ns, 100ns
Pulse Width Distortion (Max)	40ns
Rise / Fall Time (Typ)	2.5ns, 2.5ns
Voltage – Supply	2.7 V ~ 5.5 V
Operating Temperature	-40°C ~ 105°C
Package / Case	16-SOIC (0.295″, 7.50mm Width)
Supplier Device Package	16-SOIC

ADUM1401ARWZ-RL General Description

The iCoupler® technology from Analog Devices, Inc. is used in the four-channel digital isolator ADUM1401ARWZ-RL. These isolation components can outperform optocouplers thanks to high-speed CMOS and monolithic air-core transformer technology. The issues with optocoupler design are avoided by iCoupler devices by doing away with LEDs and photodiodes.

The iCoupler’s simple digital interfaces and reliable performance help to overcome problems with optocouplers such as uncertain current transfer ratios, nonlinear transfer functions, temperature effects, and longevity effects. There are no additional drivers or components needed for the iCoupler solutions. At comparable signal transmission speeds, iCoupler devices use only 10–16% of the energy needed by an optocoupler.

ADUM1401ARWZ-RL Features

• Suitable for use in automobiles.
• Communication in both directions.
• 3 V/5 V level translation
• Work at high temperatures (125°C.
• (NRZ) High data rate: from DC to 90 Mbps
• High sensitivity to transients in the common mode: >25 kV/s.
• Output enable function.
• SOIC wide body package with 16 leads
• RoHS-compliant models are offered.

ADUM1401ARWZ-RL Applications Information

● Pc Board Layout

The logic interfaces of the ADuM1400, ADuM1401, and ADuM1402 digital isolators do not need any external hardware. But it is strongly suggested to set up power supply skipping at the input and output supply pins. To do this easily, bypass capacitors can be linked between VDD1’s Pin 1 and Pin 2, and between VDD2’s Pin 15 and Pin 16. The value of the capacitor should be between 0.01 and 0.1 F. It is important to make sure that the total length of the leads between both ends of the capacitor and the power source pin does not go over 20 mm. Also, skipping should be thought about between Pin 1 and Pin 8 and between Pin 9 and Pin 16 unless the ground pair on each side of the package is connected close to the package.

When there are a lot of common-mode transients, it is important to keep board coupling across the separation barrier to a minimum. Also, the layout of the board should be made so that any connection that does happen affects all pins on a given side of a component in the same way. If you don’t do this, there could be voltage differences between the pins that are higher than the device’s absolute maximum ratings. This could cause the device to lock up or be permanently damaged.

● Propagation Delay-Related Parameters

A characteristic known as propagation delay describes the amount of time needed for a logic signal to go through a component. The propagation delay to produce a Logic 0 output may be different from the propagation delay to achieve a Logic 1 output in the case of the ADuM1400/ADuM1401/ADuM1402 device. The maximum difference between these two propagation delay values, known as pulse width distortion, is a measurement of how well the timing of the input signal is preserved.

The maximum propagation delay difference among the channels in a single ADuM1400/ADuM1401/ADuM1402 component is referred to as “channel-to-channel matching.” This statistic shows the degree of propagation delay consistency within the same component across various channels.

On the other hand, propagation delay skew refers to the largest propagation delay discrepancy between two or more ADuM1400/ADuM1401/ADuM1402 components working in the same environment. This parameter measures the degree of propagation delay variance between various components.

● Dc Correctness And Magnetic Field Immunity

Narrow pulses of around 1 nanosecond duration are produced and sent from the input of the isolator to the decoder through the transformer when positive or negative logic transitions take place. These pulses, which signify input logic changes, can set or reset the decoder because it functions in a bistable manner.

A periodic set of refresh pulses, which indicate the proper input state, is provided in order to guarantee the accuracy of the output in the event that there are no logic changes at the input for more than approximately 1 microsecond. This ensures that the output maintains the desired level of logic. The decoder assumes that the input side is either powerless or nonfunctional if it goes more than 5 microseconds without receiving any internal pulses. In these circumstances, an isolator’s output is set to default by a watchdog timer circuit.

The generated voltage in the transformer’s receiving coil restricts the ADuM1400/ADuM1401/ADuM1402’s sensitivity to magnetic field i1.0 V.nterference. The operation may be impacted if this induced voltage rises to a level high enough to incorrectly initialize or reset the decoder. The ADuM1400/ADuM1401/ADuM1402 working condition at 3V is the subject of the investigation that follows because it is the most vulnerable one. The decoder has a sensing threofold at 0.5 Vt 0.5V, whereas the pulses at the transformer’s output have an amplgreatere more than 1.0V. This creates a margin of 0.5 V where generated voltages can exist without impairing the system’s ability to function properly.

Power Consumption

The supply current at a specific channel of the ADuM1400/ADuM1401/ADuM1402 isolator depends on the supply voltage, the channel’s data rate, and its output load.

Insulation Lifetime

Any insulation structure that is exposed to voltage stress for a long enough time will eventually collapse. The features of the voltage waveform placed across the insulation affect how quickly it degrades. Analog Devices conducts a thorough set of evaluations in addition to the testing carried out by the regulatory bodies to ascertain the lifespan of the insulation structure inside the ADuM1400, ADuM1401, and ADuM1402.

Utilizing voltage levels above the rated continuous operating voltage, Analog Devices conducts accelerated life testing. Acceleration factors are calculated for various operating scenarios. The time to failure at the actual working voltage can be calculated thanks to these variables. The peak voltage for 50 years of service life for a bipolar ac operating condition and the highest CSA/VDE allowed working voltages are summarized in Table 14’s values. The allowed working voltage frequently exceeds the 50-year service life voltage. In some circumstances, operation at these high operating voltages can result in a shorter insulating life.

The voltage waveform type applied over the isolation barrier determines the insulation lifetime of the ADuM1400, ADuM1401, and ADuM1402. Depending on whether the waveform is unipolar ac, bipolar ac, or dc, the iCoupler’s insulating structure deteriorates at various rates.

Recommended Operating Conditions

• The supply voltage of the isolator can be anything between 2.7 and 5.5 volts.
• 7 times the supply voltage (VDD1) to VDD1 + 0.3 volts should be the maximum input logic high voltage range.
• -0.3 volts to 0.3 times the supply voltage (VDD1) should be the input logic low voltage range.
• From -40 degrees Celsius to +105 degrees Celsius, the isolator may perform trustworthily.

Conclusion

Experience the exceptional performance of the ADUM1401ARWZ-RL digital isolator, powered by iCoupler® technology, surpassing traditional optocouplers in signal transmission. Overcoming design challenges, these isolators ensure stable and efficient operation in various industries, even in high-temperature environments.

To achieve optimal performance, careful consideration of board layout and propagation delay characteristics is essential. Embrace the advanced features, streamlined design, and reliable signal isolation offered by the ADuM1400/ADuM1401/ADuM1402 isolators. Contact ICRFQ now and embark on a journey where endless possibilities await. Unleash your creativity, solve problems, and bring cutting-edge digital systems of the future to life.

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