DAC8841FSZ-REEL Equivalent & Substitute Parts

Part Overview

The DAC8841FSZ-REEL is an 8-bit Digital to Analog Converter manufactured by Analog Devices Inc., designed for data acquisition applications requiring voltage output conversion. This component features 8 independent D/A converters in a 24-SOIC surface mount package with SPI interface and external reference capability. The product is currently classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations.

Substiute Parts

DAC8841FSZ-REEL

Analog Devices Inc.In Stock: 3246DAC8841FSZ-REEL Datasheet

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AD5308BRUZ

Analog Devices Inc.In Stock: 2816AD5308BRUZ Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the DAC8841FSZ-REEL is determined by the following critical parameters:

• Resolution: 8-bit conversion capability
• Converter Count: 8 independent D/A converters
• Output Configuration: Buffered voltage output
• Interface Protocol: SPI digital communication
• Reference Architecture: External reference input
• Supply Voltage Compatibility: Operation within specified analog and digital supply ranges
• Settling Time: Maximum acceptable conversion speed
• Package Compatibility: Surface mount technology with compatible pinout

The AD5308BRUZ qualifies as a functional equivalent based on matching resolution, converter count, output type, SPI interface, and external reference capability. However, differences in package form factor, supply voltage range, and performance specifications must be evaluated for specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

The AD5308BRUZ is an active product from Analog Devices Inc. and represents a viable functional alternative to the obsolete DAC8841FSZ-REEL for applications requiring 8-bit, 8-channel voltage output conversion with SPI interface and external reference capability.

Key Considerations for Selection:

• Package Transition: The AD5308BRUZ uses a 16-TSSOP package versus the 24-SOIC package of the DAC8841FSZ-REEL. PCB layout and routing modifications are required.
• Supply Voltage Range: The AD5308BRUZ accepts 2.5V to 5.5V supply, providing greater flexibility than the fixed 5V requirement of the DAC8841FSZ-REEL.
• Performance Specifications: The AD5308BRUZ demonstrates superior linearity (INL/DNL: ±0.15, ±0.02 LSB) compared to the DAC8841FSZ-REEL (±0.5, ±1 LSB).
• Settling Time: The AD5308BRUZ settling time of 8µs is marginally slower than the DAC8841FSZ-REEL at 6µs; verify compatibility with system timing requirements.
• Operating Temperature Range: The AD5308BRUZ supports -40°C to 125°C, extending the upper temperature limit by 40°C.
• Compliance Status: The AD5308BRUZ is RoHS3 compliant and REACH unaffected, meeting current regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can the AD5308BRUZ directly replace the DAC8841FSZ-REEL without PCB modifications?

A: No. The AD5308BRUZ uses a 16-TSSOP package while the DAC8841FSZ-REEL uses a 24-SOIC package. Different pinouts and physical dimensions require PCB redesign and layout changes.

Q: Are the SPI interfaces compatible between these parts?

A: Both parts support SPI interface for digital communication. However, pinout differences necessitate verification of signal routing and control logic during integration.

Q: What is the impact of the 2µs difference in settling time?

A: The AD5308BRUZ settling time of 8µs versus 6µs for the DAC8841FSZ-REEL represents a 33% increase. Applications with strict timing requirements must verify this specification against system performance needs.

Q: Does the AD5308BRUZ support the same supply voltage as the DAC8841FSZ-REEL?

A: The AD5308BRUZ accepts 2.5V to 5.5V supply, which encompasses the 5V requirement of the DAC8841FSZ-REEL. However, the fixed 5V specification of the DAC8841FSZ-REEL must be confirmed within the AD5308BRUZ operating range for your application.

Q: What are the differences in DAC architecture between these parts?

A: The DAC8841FSZ-REEL uses R-2R architecture while the AD5308BRUZ uses String DAC architecture. Both architectures support 8-bit resolution with external reference, but the String DAC architecture in the AD5308BRUZ contributes to its superior linearity specifications.

Q: Is the AD5308BRUZ suitable for new designs?

A: Yes. The AD5308BRUZ is an active product with current manufacturing status, RoHS3 compliance, and extended operating temperature range, making it appropriate for new product development requiring 8-bit, 8-channel DAC functionality.