MAX128BEAI Equivalent & Substitute Parts

Part Overview

The MAX128BEAI is a 12-bit Data Acquisition System (DAS) with 8 channels and 8k sampling rate, manufactured by Analog Devices Inc./Maxim Integrated. This component operates as a serial interface device in a 28-SSOP surface mount package. The MAX128BEAI is classified as obsolete, making identification of compatible substitute parts essential for ongoing system maintenance and new design implementations where legacy compatibility is required.

Substiute Parts

MAX128BEAI

Analog Devices Inc./Maxim IntegratedIn Stock: 989MAX128BEAI Datasheet

Current PartRFQ

MAX128BEAI+

Analog Devices Inc./Maxim IntegratedIn Stock: 953MAX128BEAI+ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MAX128BEAI is determined by strict alignment of the following core parameters:

• Channel Count: 8 channels (required match)
• Resolution: 12 bits (required match)
• Sampling Rate: 8k per second (required match)
• Package Type: 28-SSOP with identical physical dimensions (required match)
• Mounting Type: Surface Mount (required match)
• Operating Temperature Range: -40°C to 85°C (required match)
• Voltage Supply Configuration: Single Supply topology (required match)
• Data Interface: Serial capability (required minimum)

The MAX128BEAI+ qualifies as a direct substitute based on full alignment with all mandatory parameters. The MAX128BEAI+ maintains identical channel count, resolution, sampling rate, package footprint, and operating specifications while offering enhanced data interface capability (I2C and Serial) and active product status.

Parameter Comparison

Engineering Selection Recommendations

The MAX128BEAI+ is the qualified substitute for the MAX128BEAI based on the following engineering criteria:

Product Status: The MAX128BEAI is obsolete, while the MAX128BEAI+ maintains active product status with ongoing manufacturer support and availability.

Compliance: The MAX128BEAI+ achieves ROHS3 compliance, whereas the original MAX128BEAI is non-compliant. For applications subject to RoHS regulations or environmental compliance requirements, the MAX128BEAI+ provides the necessary certification alignment.

Functional Equivalence: Both parts share identical core specifications across all critical parameters: 8-channel configuration, 12-bit resolution, 8k sampling rate, single supply operation, and 28-SSOP package footprint. The MAX128BEAI+ extends interface capability with I2C support while maintaining full serial interface compatibility.

Supply Voltage Specification: The MAX128BEAI+ specifies a supply voltage range of 4.75V to 5.25V, providing defined electrical operating parameters for design validation.

Frequently Asked Questions (FAQ)

Q: Can the MAX128BEAI+ directly replace the MAX128BEAI in existing designs?

A: Yes. The MAX128BEAI+ maintains identical channel count, resolution, sampling rate, package type, and physical footprint. Both components operate within the same temperature range and use single supply voltage configuration. The 28-SSOP package dimensions are identical, enabling direct PCB footprint compatibility.

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

A: The MAX128BEAI+ is the active production variant with ROHS3 compliance and dual data interface support (I2C and Serial), whereas the MAX128BEAI is obsolete and RoHS non-compliant. The MAX128BEAI+ also includes specified supply voltage parameters (4.75V to 5.25V).

Q: Are there any interface compatibility considerations?

A: The MAX128BEAI supports serial interface operation. The MAX128BEAI+ supports both I2C and serial interfaces. Existing designs using serial communication will operate without modification. The additional I2C capability in the MAX128BEAI+ does not affect serial-based implementations.

Q: What packaging formats are available for the MAX128BEAI+?

A: The MAX128BEAI+ is supplied in Tube packaging, whereas the original MAX128BEAI packaging specification was not defined in the source data.

Q: Are there supply voltage differences that affect circuit design?

A: The MAX128BEAI+ specifies a supply voltage range of 4.75V to 5.25V. Designs must validate that existing power supply circuits operate within this defined range. The MAX128BEAI did not include explicit voltage specifications in the available data.

Q: Is the MAX128BEAI+ suitable for new designs?

A: Yes. The MAX128BEAI+ is an active product with current manufacturer support, ROHS3 compliance, and full functional equivalence to the obsolete MAX128BEAI. It is the appropriate selection for new implementations requiring 8-channel, 12-bit data acquisition at 8k sampling rate in a 28-SSOP package.