MAX172AENG 12-Bit SAR ADC Equivalent & Substitute Parts

Part Overview

The MAX172AENG is a 12-bit successive approximation register (SAR) analog-to-digital converter manufactured by Analog Devices Inc./Maxim Integrated. This single-channel data acquisition IC features parallel digital output and operates with dual supply voltages (±12V, ±15V, or 5V). The device is classified as obsolete, making identification of compatible substitute parts essential for ongoing system support and new design implementations.

Substiute Parts

MAX172AENG

Analog Devices Inc./Maxim IntegratedIn Stock: 1064MAX172AENG Datasheet

Current PartRFQ

MAX172AENG+

Analog Devices Inc./Maxim IntegratedIn Stock: 1128MAX172AENG+ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MAX172AENG is determined by strict equivalence across the following critical parameters:

• 12-bit resolution
• 100 kSPS sampling rate
• Single-channel, single-ended input configuration
• Parallel digital interface
• SAR architecture with internal reference
• Dual supply voltage support (5V, ±12V, ±15V)
• 24-DIP through-hole package
• Operating temperature range of -40°C to +85°C

The MAX172AENG+ qualifies as a direct substitute based on identical electrical specifications and package configuration. The primary distinction is product status and compliance certification.

Parameter Comparison

Engineering Selection Recommendations

The MAX172AENG+ is the direct functional equivalent of the MAX172AENG. Both devices share identical electrical characteristics, pin configuration, and package specifications, ensuring pin-for-pin compatibility in existing circuit designs.

The MAX172AENG+ is recommended for new designs and replacement applications due to its active product status and ROHS3 compliance certification. The original MAX172AENG, classified as obsolete, is suitable only for legacy system maintenance where existing inventory is available.

Both parts maintain REACH Unaffected status and EAR99 export classification. The choice between these parts should be based on product availability, supply chain requirements, and regulatory compliance mandates specific to the application.

Frequently Asked Questions (FAQ)

Q: Can the MAX172AENG+ directly replace the MAX172AENG in existing designs?

A: Yes. The MAX172AENG+ is a pin-for-pin equivalent with identical electrical specifications, package dimensions, and mounting configuration. No circuit modifications are required.

Q: What is the primary difference between these two parts?

A: The MAX172AENG is obsolete, while the MAX172AENG+ maintains active product status. The MAX172AENG+ also carries ROHS3 compliance certification, whereas the original is non-compliant.

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

A: No. Both devices support identical dual supply voltages (5V, ±12V, ±15V) and operate across the same temperature range (-40°C to +85°C).

Q: Does the packaging differ between these parts?

A: No. Both parts are supplied in 24-DIP through-hole packages with identical physical dimensions (0.300", 7.62mm).

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

A: The MAX172AENG+ should be selected for new designs due to active product status and regulatory compliance. The MAX172AENG is appropriate only for legacy system support where existing inventory exists.

Q: Are there any differences in sampling rate or resolution?

A: No. Both devices provide 12-bit resolution at 100 kSPS sampling rate with single-channel, single-ended input configuration.