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Name: ADUM1281ARZ
Brand: Analog Devices Inc.
SKU: ADUM1281ARZ
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Any Feature, including a modified Existing Feature, that is not an Existing Feature.

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Analog Devices Inc. ADUM1281ARZ

Part No.:: ADUM1281ARZ

Manufacturer:: Analog Devices Inc.

Package:: 8-SOIC (0.154, 3.90mm Width)

Datasheet:: ADUM1281ARZ.pdf

Description:: DGTL ISO 3000VRMS 2CH GP 8SOIC

In Stock:: 3253

Quantity:: Add To Cart

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ADUM1281ARZ Specifications

Packaging:
Tube
Series:
iCoupler®
ProductStatus:
Active
Technology:
Magnetic Coupling
Type:
General Purpose
IsolatedPower:
No
NumberofChannels:
2
Inputs-Side1/Side2:
1/1
ChannelType:
Unidirectional
Voltage-Isolation:
3000Vrms
CommonModeTransientImmunity(Min):
25kV/µs
DataRate:
1Mbps
PropagationDelaytpLH/tpHL(Max):
50ns, 50ns
PulseWidthDistortion(Max):
10ns
Rise/FallTime(Typ):
2.5ns, 2.5ns
Voltage-Supply:
3V ~ 5.5V
OperatingTemperature:
-40°C ~ 125°C
MountingType:
Surface Mount

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ADUM1281ARZ information

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ADUM1281ARZ Typical application Circuitry

ADUM1281ARZ

The ADuM1281ARZ is a model within the ADuM1281 series, a family of dual-channel digital isolators produced by Analog Devices. This series employs the innovative iCoupler® technology to offer precise and reliable galvanic isolation for digital signals. The ADuM1281 series is characterized by its high data rate capabilities and low power consumption, making it an ideal choice for a wide array of applications requiring isolation, such as industrial control systems, data communication systems, and medical equipment where safety and signal integrity are paramount.

1. Power Supply Connections (VDD1, GND1, VDD2, GND2): The ADuM1281ARZ requires two separate power supplies: one for the input side (VDD1 and GND1) and one for the isolated output side (VDD2 and GND2). These supplies typically operate within the range of 3.0V to 5.5V. It's crucial to ensure stable and clean power supplies to both sides to maintain the device's performance. Decoupling capacitors should be placed near the VDD1, VDD2, GND1, and GND2 pins to minimize supply noise.

2. Input Channels (IN1, IN2): The device features two input channels, IN1 and IN2, which accept TTL or CMOS level digital signals on the input side. These signals are then processed and transmitted across the isolation barrier to the output side. Ensuring that the input signals are clean and within the specified voltage levels is essential for accurate data transmission.

3. Isolated Output Channels (OUT1, OUT2): Corresponding to the input channels, there are two isolated output channels, OUT1 and OUT2, on the output side of the device. These outputs deliver the isolated digital signals to the next stage of the circuit. The integrity of these outputs is crucial for maintaining the reliability of the isolated communication.

4. Direction Control (DIR1, DIR2, optional): Some variants in the ADuM1281 series, including the ADuM1281ARZ, may feature direction control pins (DIR1, DIR2) that determine the signal direction for each channel. Proper configuration of these pins is necessary to align with the specific requirements of the application, ensuring correct data flow across the isolation barrier.

5. PCB Layout Considerations: The PCB layout should be carefully designed to maximize the performance of the ADuM1281ARZ. Key considerations include maintaining physical separation between the input and output sides to uphold isolation and minimizing loop areas to reduce susceptibility to electromagnetic interference. The relevant safety regulations must be followed in order to maintain adequate clearance and creepage distances.

6. Thermal Management: Although the ADuM1281ARZ is designed for low-power operation, attention to thermal management may be necessary, particularly in dense PCB layouts or high-temperature environments. Ensuring adequate heat dissipation can help maintain device performance and longevity.

7. Grounding and Isolation: Proper grounding is essential for both the input and output sides, with careful attention to ensure that the isolated grounds (GND2) are not inadvertently connected to the primary ground (GND1) or each other, except through the intended isolation barrier.

Incorporating the ADuM1281ARZ into a system demands meticulous attention to power supply connections, clean and accurate input signal routing, careful design of the isolated output connections, and adherence to PCB layout guidelines for signal integrity and isolation. By following these design principles, the ADuM1281ARZ can be effectively utilized in various applications requiring robust digital isolation.

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6. What is the process for return or replacement of ADUM1281ARZ?

All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the ADUM1281ARZ we delivered, we will accept the replacement or return of the ADUM1281ARZ only when all of the below conditions are fulfilled:

(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.

(2)We are informed of the defect described above within 90 days after the delivery of ADUM1281ARZ.

(3)The PartNo is unused and only in the original unpacked packaging.

Two processes to return the products:

(1)Inform us within 90 days

(2)Obtain Requesting Return Authorizations