MAX127ACAI Equivalent & Substitute Parts

Part Overview

The MAX127ACAI is a 12-bit Data Acquisition System (DAS) integrated circuit manufactured by Analog Devices Inc./Maxim Integrated. This device features 8 channels with an 8 kHz sampling rate and serial data interface, housed in a 28-SSOP surface mount package. The MAX127ACAI is classified as obsolete, making identification of suitable substitute components essential for ongoing system support, design updates, and procurement continuity.

Substiute Parts

MAX127ACAI

Analog Devices Inc./Maxim IntegratedIn Stock: 1161MAX127ACAI Datasheet

Current PartRFQ

MAX127ACAI+

Analog Devices Inc./Maxim IntegratedIn Stock: 785MAX127ACAI+ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MAX127ACAI is determined by strict alignment of the following critical parameters:

• Channel Count: 8 channels (required match)
• Resolution: 12 bits (required match)
• Sampling Rate: 8 kHz (required match)
• Package Type: 28-SSOP form factor (required match)
• Mounting Type: Surface mount (required match)
• Voltage Supply Configuration: Single supply operation (required match)
• Operating Temperature Range: 0°C to 70°C (required match)
• Data Interface: Serial capability (required minimum)

The MAX127ACAI+ qualifies as a direct substitute based on matching all critical electrical and mechanical parameters. The primary distinction is enhanced product status and improved regulatory compliance.

Parameter Comparison

Engineering Selection Recommendations

The MAX127ACAI+ is the qualified substitute for the obsolete MAX127ACAI. Selection of the MAX127ACAI+ provides the following advantages:

• Active Product Status: The MAX127ACAI+ maintains active manufacturing status, ensuring long-term availability and supply chain stability compared to the obsolete MAX127ACAI.
• Regulatory Compliance: The MAX127ACAI+ achieves ROHS3 compliance, meeting current environmental and regulatory requirements. The original MAX127ACAI is RoHS non-compliant.
• Expanded Interface Capability: The MAX127ACAI+ supports both I2C and Serial data interfaces, providing additional flexibility beyond the serial-only interface of the MAX127ACAI.
• Specified Supply Voltage: The MAX127ACAI+ provides explicit supply voltage specification (4.75V to 5.25V), enabling precise power supply design validation.

Both parts maintain identical electrical performance specifications (12-bit resolution, 8 channels, 8 kHz sampling rate) and identical physical packaging (28-SSOP), ensuring direct functional compatibility in existing circuit designs.

Frequently Asked Questions (FAQ)

Q: Can the MAX127ACAI+ be used as a direct replacement for the MAX127ACAI in existing designs?

A: Yes. The MAX127ACAI+ maintains identical channel count (8), resolution (12 bits), sampling rate (8 kHz), package type (28-SSOP), and operating temperature range (0°C to 70°C). The physical footprint and pinout are compatible. The MAX127ACAI+ adds I2C interface capability in addition to serial interface support, which does not affect serial-only implementations.

Q: What is the primary reason to transition from MAX127ACAI to MAX127ACAI+?

A: The MAX127ACAI is classified as obsolete, creating supply and support risks. The MAX127ACAI+ is an active product with current manufacturing support, ROHS3 compliance, and documented long-term availability.

Q: Are there any electrical performance differences between these parts?

A: No. Both parts deliver identical 12-bit resolution, 8-channel configuration, and 8 kHz sampling rate. The MAX127ACAI+ provides explicit supply voltage specification (4.75V to 5.25V) for design validation purposes.

Q: Does the 28-SSOP package remain the same for both parts?

A: Yes. Both the MAX127ACAI and MAX127ACAI+ use the 28-SSOP package with 0.209" width (5.30mm). PCB footprints and assembly processes remain unchanged.

Q: What is the significance of ROHS3 compliance on the MAX127ACAI+?

A: ROHS3 compliance indicates the MAX127ACAI+ meets current environmental regulations for restricted hazardous substances. This is required for many industrial, commercial, and consumer applications. The original MAX127ACAI is RoHS non-compliant and may face procurement restrictions in regulated markets.

Q: Is the moisture sensitivity level the same for both parts?

A: Yes. Both parts have Moisture Sensitivity Level 1 (Unlimited), indicating no moisture-related handling restrictions during storage or assembly.