AD7243AN Equivalent & Substitute Parts

Part Overview

The AD7243AN is a 12-bit Digital to Analog Converter (DAC) manufactured by Analog Devices Inc., designed for voltage output applications in data acquisition systems. It features a single D/A converter with R-2R architecture, SPI data interface, and support for both external and internal reference types. The AD7243AN is classified as an obsolete product, making equivalent substitute parts necessary for ongoing system maintenance, repairs, and legacy design support.

Substiute Parts

AD7243AN

Analog Devices Inc.In Stock: 2457AD7243AN Datasheet

Current PartRFQ

AD7243ANZ

Analog Devices Inc.In Stock: 4024AD7243ANZ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the AD7243AN is determined by strict equivalence across the following critical parameters:

• Resolution: 12-bit conversion capability
• Converter Count: Single D/A converter configuration
• Output Configuration: Voltage output with buffered stage
• Interface Protocol: SPI serial data interface
• Reference Architecture: Support for both external and internal reference types
• Electrical Specifications: Matching settling time (10µs), INL/DNL performance (±1 LSB max / ±0.9 LSB max), and supply voltage ranges (±10.8V ~ 16.5V analog)
• Package Compatibility: 16-DIP through-hole package with identical pin configuration
• Temperature Range: -40°C to 85°C operating specification

Only parts meeting all these criteria qualify as direct substitutes for the AD7243AN.

Parameter Comparison

Engineering Selection Recommendations

The AD7243ANZ serves as the direct functional equivalent to the AD7243AN. Both parts are manufactured by Analog Devices Inc. and share identical electrical and mechanical specifications across all critical parameters. The primary distinction is product lifecycle status: the AD7243AN is obsolete, while the AD7243ANZ maintains active production status.

For new designs or system replacements, the AD7243ANZ is the appropriate selection. The AD7243ANZ carries ROHS3 compliance and REACH unaffected status, meeting current environmental and regulatory requirements. Both parts are housed in the same 16-DIP through-hole package, ensuring direct PCB compatibility without layout modifications.

The electrical performance characteristics—12-bit resolution, 10µs settling time, R-2R architecture, and SPI interface—are identical between the two parts, confirming functional interchangeability in all application contexts.

Frequently Asked Questions (FAQ)

Q: Can the AD7243ANZ directly replace the AD7243AN on existing PCBs?

A: Yes. Both parts use the 16-DIP through-hole package with identical pinout and electrical specifications. No PCB modifications are required for substitution.

Q: What is the primary difference between AD7243AN and AD7243ANZ?

A: The AD7243AN is classified as obsolete, while the AD7243ANZ is in active production. The AD7243ANZ also carries ROHS3 compliance and REACH unaffected certifications. All electrical and mechanical parameters are equivalent.

Q: Are there any supply voltage or temperature range differences?

A: No. Both parts operate across the identical analog supply voltage range (±10.8V ~ 16.5V) and temperature range (-40°C ~ 85°C).

Q: Does the packaging differ between these parts?

A: The AD7243AN is supplied in standard packaging, while the AD7243ANZ is supplied in tube packaging. Both use the same 16-DIP case. Tube packaging is standard for active production parts and does not affect electrical performance or PCB compatibility.

Q: Are the SPI interface protocols identical?

A: Yes. Both parts implement the same SPI data interface protocol with support for external and internal reference configurations.

Q: Which part should be selected for new system designs?

A: The AD7243ANZ should be selected for new designs due to its active production status and current regulatory compliance certifications (ROHS3, REACH unaffected).