AD8403AR10 Equivalent & Substitute Parts

Part Overview

The AD8403AR10 is a digital potentiometer IC manufactured by Analog Devices Inc., featuring 10kΩ resistance with 256 taps across 4 circuits, SPI interface control, and 24-SOIC surface mount packaging. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The part operates across a supply voltage range of 2.7V to 5.5V with linear taper configuration and cascade pin functionality.

Substiute Parts

AD8403AR10

Analog Devices Inc.In Stock: 16716AD8403AR10 Datasheet

Current PartRFQ

AD8403ARZ10

Analog Devices Inc.In Stock: 9417AD8403ARZ10 Datasheet

DirectRFQ

AD5204BRZ10

Analog Devices Inc.In Stock: 36445AD5204BRZ10 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the AD8403AR10 is determined by strict equivalence across the following critical parameters: 10kΩ resistance value, 4-circuit configuration, 256-tap resolution, SPI interface protocol, linear taper, 24-SOIC package footprint, and volatile memory type. Parts meeting these criteria are classified as direct or similar substitutes based on additional parameter alignment.

Direct Substitute (Packaging Variant): AD8403ARZ10 maintains identical electrical specifications and differs only in packaging format (tube vs. unspecified original packaging), with active product status enabling continued availability.

Similar Substitute (Parameter Deviations): AD5204BRZ10 shares core functional parameters (10kΩ, 4 circuits, 256 taps, SPI, linear taper, 24-SOIC) but introduces measurable deviations in tolerance (±30% vs. ±20%), temperature coefficient (700ppm/°C vs. 500ppm/°C), wiper resistance (50Ω vs. 200Ω), and operating temperature range (-40°C ~ 85°C vs. -40°C ~ 125°C). Supply voltage includes dual-range capability (2.7V ~ 5.5V, ±2.3V ~ 2.7V) and adds selectable address feature.

Parameter Comparison

Engineering Selection Recommendations

AD8403ARZ10 is the preferred direct substitute for AD8403AR10 applications. This part maintains complete electrical and thermal equivalence while offering active product status and ROHS3 compliance certification. The packaging format change (tube) does not affect functional performance or PCB integration. This substitute is suitable for direct replacement in existing designs without circuit modification.

AD5204BRZ10 serves as a similar substitute where application requirements accommodate parameter deviations. Selection of this part requires engineering evaluation of tolerance impact (±30% vs. ±20%), temperature coefficient drift (700ppm/°C vs. 500ppm/°C), reduced maximum operating temperature (-40°C ~ 85°C vs. -40°C ~ 125°C), and lower wiper resistance (50Ω vs. 200Ω). The addition of selectable address functionality and dual-range supply voltage capability may provide design advantages in specific applications. ROHS3 compliance and active product status are confirmed.

Frequently Asked Questions (FAQ)

Q: Can AD8403ARZ10 replace AD8403AR10 without circuit modification? A: Yes. AD8403ARZ10 is electrically and thermally identical to AD8403AR10. The only difference is packaging format (tube). No circuit changes are required.

Q: What are the key differences between AD8403AR10 and AD5204BRZ10? A: Both parts share 10kΩ resistance, 4 circuits, 256 taps, SPI interface, and 24-SOIC packaging. AD5204BRZ10 differs in tolerance (±30% vs. ±20%), temperature coefficient (700ppm/°C vs. 500ppm/°C), maximum operating temperature (-40°C ~ 85°C vs. -40°C ~ 125°C), wiper resistance (50Ω vs. 200Ω), and adds selectable address feature with dual-range supply voltage support.

Q: Is AD5204BRZ10 suitable for high-temperature applications? A: AD5204BRZ10 operates to 85°C maximum, compared to AD8403AR10 at 125°C. Applications requiring operation above 85°C require AD8403ARZ10 or equivalent.

Q: Are both substitute parts RoHS compliant? A: Yes. Both AD8403ARZ10 and AD5204BRZ10 are ROHS3 compliant. The original AD8403AR10 RoHS status is not specified.

Q: What is the impact of wiper resistance difference (200Ω vs. 50Ω)? A: Wiper resistance affects circuit loading and signal integrity. AD8403AR10 and AD8403ARZ10 specify 200Ω typical wiper resistance, while AD5204BRZ10 specifies 50Ω. Applications sensitive to wiper loading require verification before substitution.

Q: Can AD5204BRZ10 operate at ±2.3V ~ 2.7V supply voltage? A: Yes. AD5204BRZ10 supports dual supply voltage ranges: 2.7V ~ 5.5V and ±2.3V ~ 2.7V. AD8403AR10 and AD8403ARZ10 support only 2.7V ~ 5.5V single supply range.