MAX120C/D Equivalent & Substitute Parts

Part Overview

The MAX120C/D is a 12-bit Analog to Digital Converter (ADC) with single-ended input and SAR (Successive Approximation Register) architecture, manufactured by Analog Devices Inc./Maxim Integrated. This die-form component operates at a 500 kHz sampling rate with parallel data interface and supports both external and internal reference types.

The MAX120C/D is classified as obsolete. Locating equivalent or substitute parts is necessary to support legacy system maintenance, design updates, or when die-form packaging is no longer available through standard distribution channels.

Substiute Parts

MAX120C/D

Analog Devices Inc./Maxim IntegratedIn Stock: 1159MAX120C/D Datasheet

Current PartRFQ

MAX120CAG+

Analog Devices Inc./Maxim IntegratedIn Stock: 869MAX120CAG+ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MAX120C/D is based on functional equivalence across the following critical parameters:

• Resolution and Sampling Rate: Both main and substitute parts must maintain 12-bit resolution at 500 kHz sampling rate
• Input Configuration: Single-ended input with 1 channel
• Data Interface and Architecture: Parallel interface with SAR architecture
• Reference Flexibility: Support for both external and internal reference types
• Operating Temperature: 0°C to 70°C range
• Compliance Standards: ROHS3 compliance and MSL Level 1 rating

The MAX120CAG+ qualifies as a direct functional substitute. While it differs in physical packaging (24-SSOP vs. die form), it maintains identical electrical specifications and operational characteristics. The primary distinction is the packaged form factor, which enables integration into standard PCB assembly processes.

Parameter Comparison

Engineering Selection Recommendations

The MAX120CAG+ is the direct functional equivalent to the MAX120C/D. Both components share identical electrical specifications, resolution, sampling rate, and reference architecture. The MAX120CAG+ maintains active product status with current manufacturing support, whereas the MAX120C/D is obsolete.

Selection of the MAX120CAG+ is appropriate for applications requiring:

• Equivalent 12-bit SAR ADC performance with 500 kHz sampling capability
• Single-ended input processing with parallel data output
• Flexible reference voltage configuration (external or internal)
• ROHS3 compliance and MSL Level 1 rating
• Standard surface-mount PCB integration (24-SSOP package)

The primary design consideration is the transition from die-form to packaged form factor. This change requires PCB layout modifications and standard component assembly processes rather than die-attach and wire-bonding procedures.

Frequently Asked Questions (FAQ)

Q: Can the MAX120CAG+ directly replace the MAX120C/D in all applications?

A: The MAX120CAG+ provides electrical equivalence across all functional parameters. The primary difference is packaging: the MAX120C/D is supplied as a bare die, while the MAX120CAG+ is a 24-SSOP packaged component. Applications using die-form components require redesign to accommodate standard surface-mount packaging.

Q: What are the key electrical parameters that define substitution eligibility?

A: Substitution is determined by matching resolution (12-bit), sampling rate (500 kHz), input configuration (single-ended, 1 channel), data interface (parallel), architecture (SAR), and reference type support (external and internal). Both parts meet these criteria.

Q: Are there supply voltage differences between the two parts?

A: The MAX120C/D specifies digital supply as 4.75V ~ 5.25V. The MAX120CAG+ specifies digital supply as 5V with analog supply of 5V or -10.8V ~ 15.75V. Both support the standard 5V digital supply range required for typical applications.

Q: What compliance certifications apply to both parts?

A: Both the MAX120C/D and MAX120CAG+ are ROHS3 compliant, REACH unaffected, and rated at MSL Level 1 (unlimited moisture sensitivity protection).

Q: Why is the MAX120C/D classified as obsolete?

A: The MAX120C/D die-form component has reached end-of-life status. The MAX120CAG+ packaged equivalent remains in active production and is the recommended solution for new designs and legacy system support.