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Name: AD421BRRL
Brand: Analog Devices Inc.
SKU: AD421BRRL
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. AD421BRRL

Part No.:: AD421BRRL

Manufacturer:: Analog Devices Inc.

Package:: 16-SOIC (0.295, 7.50mm Width)

Datasheet:: AD421BRRL.pdf

Description:: IC DAC 16BIT 16SOIC

In Stock:: 2818

Quantity:: Add To Cart

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AD421BRRL Specifications

Package/Case:
16-SOIC (0.295, 7.50mm Width)
Packaging:
Tape & Reel (TR)
Series:
-
ProductStatus:
Obsolete
Type:
DAC
NumberofChannels:
1
Resolution(Bits):
16 b
SamplingRate(PerSecond):
-
DataInterface:
MICROWIRE™, Serial
VoltageSupplySource:
Single Supply
Voltage-Supply:
3V, 3.3V, 5V
OperatingTemperature:
-40°C ~ 85°C
MountingType:
Surface Mount

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AD421BRRL information

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AD421BRRL Typical application Circuitry

AD421BRRL

The AD421BRRL is a specialized digital-to-analog converter (DAC) developed by Analog Devices, primarily aimed at industrial applications requiring a 4-20mA current loop output.

Core Features:

1. Output Range: Designed to provide a programmable current output, typically within the 4-20mA range.

2. Resolution: Offers a 16-bit resolution for precise control over the output current.

3. Onboard Voltage Regulator: Features an integrated voltage regulator for consistent performance.

4. Fault Detection: Equipped with a loop fault detection mechanism for improved system diagnostics.

Application Example: Industrial Valve Positioning

In an industrial valve positioning system, the AD421BRRL can be used to control the position of a valve by modulating the current in a 4-20mA loop. Here's a detailed guide for incorporating this DAC into such a system:

1. Power Supply Integration: Connect the AD421BRRL VDD pin (Pin 16) to a +24V power source and the GND pin (Pin 8) to the system ground. The integrated voltage regulator ensures stable operation.

2. Current Output Configuration: Link the IOUT pin (Pin 14) to the valve actuator's control input. The current output can be adjusted within the 4-20mA range to control the valve's position.

3. Digital Input Connection: Attach the AD421BRRL digital input pins (D0-D15) to a microcontroller or digital system that provides the digital data to be converted into the corresponding current output.

4. Fault Detection Monitoring: Use the FAULT pin (Pin 11) to allow the microcontroller to detect and address any issues in the current loop, such as open or short circuits.

Circuit Design Considerations:

- Decoupling Capacitors: Place decoupling capacitors near the power supply pins to filter out noise and ensure stable operation.

- Signal Integrity: Ensure that the digital signals provided to the DAC are clean and free from noise to maintain the accuracy of the current output.

- Current Loop Protection: Implement protective measures, such as surge protection, to safeguard the DAC and other components in the current loop from electrical surges.

- Thermal Management: Consider the thermal aspects of the design, especially if the DAC operates in a high-temperature industrial environment.

By following these guidelines and paying attention to signal integrity and protection, the AD421BRRL can be effectively used in industrial valve positioning systems to provide accurate and reliable current output for precise control of valve positions.

AD421BRRL FAQ

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3. Are the AD421BRRL price and inventory displayed accurate?

The price and inventory of AD421BRRL fluctuates frequently and cannot be updated in time, it will be updated periodically within 24 hours. And, our quotation usually expires after 5 days.

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6. What is the process for return or replacement of AD421BRRL?

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 AD421BRRL we delivered, we will accept the replacement or return of the AD421BRRL 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 AD421BRRL.

(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