AD7945BN Equivalent & Substitute Parts

Part Overview

The AD7945BN is a 12-bit digital-to-analog converter (DAC) manufactured by Analog Devices Inc., designed for data acquisition applications requiring parallel interface connectivity. This component features current output with unbuffered configuration and operates across industrial temperature ranges from -40°C to 85°C. The AD7945BN is classified as obsolete, making identification of equivalent and substitute parts essential for system redesign, legacy product support, and procurement continuity.

Substiute Parts

AD7945BN

Analog Devices Inc.In Stock: 1519AD7945BN Datasheet

Current PartRFQ

AD7945BNZ

Analog Devices Inc.In Stock: 1336AD7945BNZ Datasheet

DirectRFQ

AD7948BNZ

Analog Devices Inc.In Stock: 1183AD7948BNZ Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the AD7945BN are identified based on strict electrical and mechanical parameter matching within the data acquisition component category. The substitution logic is based on the following critical parameters:

• 12-bit resolution with single D/A converter configuration
• Current output, unbuffered topology
• Parallel data interface with external reference capability
• 5V analog and digital supply voltages
• R-2R architecture with ±0.5 LSB INL/DNL specification
• 20-DIP through-hole package format
• Industrial temperature range (-40°C to 85°C)

Parts meeting all these parameters are classified as direct substitutes. The AD7945BNZ and AD7948BNZ satisfy these criteria and are listed as equivalent alternatives to the obsolete AD7945BN.

Parameter Comparison

Engineering Selection Recommendations

The AD7945BN is classified as obsolete and no longer in active production. Both AD7945BNZ and AD7948BNZ are active production alternatives that maintain identical electrical and mechanical specifications. Selection between these substitutes should be based on the following factors:

AD7945BNZ is the direct successor to the AD7945BN, sharing the same base product number (AD7945) and offering active product status with full compliance certifications including ROHS3 and REACH Unaffected status.

AD7948BNZ is a parametric equivalent based on the AD7948 base product number, providing identical functional performance and compliance certifications while maintaining the same package and electrical interface.

Both substitutes are available in tube packaging and support through-hole mounting in 20-DIP format. Selection between AD7945BNZ and AD7948BNZ depends on design documentation references and procurement specifications that may reference either base product number.

Frequently Asked Questions (FAQ)

Q: Can AD7945BNZ directly replace AD7945BN in existing designs?

A: Yes. The AD7945BNZ maintains identical electrical specifications, pin configuration, package format, and operating characteristics. No circuit modifications are required for direct substitution in through-hole applications.

Q: What is the difference between AD7945BNZ and AD7948BNZ?

A: Both parts are parametric equivalents with identical 12-bit DAC specifications, current output topology, parallel interface, and 20-DIP package format. The primary difference is the base product number designation (AD7945 versus AD7948). Both meet all electrical and mechanical substitution criteria.

Q: Are compliance certifications available for substitute parts?

A: Yes. Both AD7945BNZ and AD7948BNZ are ROHS3 compliant and REACH unaffected, providing regulatory compliance for modern applications. The obsolete AD7945BN does not carry these certifications.

Q: Is the 20-DIP package format critical for substitution?

A: Yes. All three parts use identical 20-DIP (0.300", 7.62mm) through-hole packaging. This package format is essential for PCB compatibility and socket-based designs. Alternative package formats would require circuit board redesign.

Q: Can these parts be used interchangeably in production?

A: Yes, within the constraints of your design documentation. If your design specifies AD7945BN, AD7945BNZ is the direct replacement. If your design references AD7948, then AD7948BNZ is appropriate. Both are functionally equivalent and support identical application requirements.