MAX128BCAI Equivalent & Substitute Parts

Part Overview

The MAX128BCAI 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 MAX128BCAI is classified as obsolete, making identification of compatible substitute parts essential for ongoing system maintenance, redesign, and procurement planning.

Substiute Parts

MAX128BCAI

Analog Devices Inc./Maxim IntegratedIn Stock: 1053MAX128BCAI Datasheet

Current PartRFQ

MAX128BCAI+

Analog Devices Inc./Maxim IntegratedIn Stock: 1089MAX128BCAI+ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MAX128BCAI is determined by strict equivalence across the following critical parameters:

• Channel Count: 8 channels (fixed requirement)
• Resolution: 12 bits (fixed requirement)
• Sampling Rate: 8 kHz (fixed requirement)
• Package Type: 28-SSOP form factor (fixed requirement)
• Mounting Type: Surface mount (fixed requirement)
• Operating Temperature Range: 0°C to 70°C (fixed requirement)
• Voltage Supply Architecture: Single supply operation (fixed requirement)

The MAX128BCAI+ qualifies as a direct substitute based on matching all core electrical and mechanical parameters. The primary distinction is product status and compliance certification, not functional capability.

Parameter Comparison

Engineering Selection Recommendations

The MAX128BCAI+ is the direct substitute for the obsolete MAX128BCAI. Both devices share identical core specifications: 8-channel, 12-bit resolution, 8 kHz sampling rate, and 28-SSOP package configuration.

The MAX128BCAI+ offers two material advantages:

1. Product Status: The MAX128BCAI+ maintains active production status, ensuring long-term availability and supply chain continuity.

2. Regulatory Compliance: The MAX128BCAI+ is ROHS3 compliant, whereas the original MAX128BCAI is RoHS non-compliant. This distinction is significant for applications subject to environmental regulations or customer compliance requirements.

The MAX128BCAI+ supports both I2C and serial data interfaces, providing expanded interface flexibility compared to the serial-only interface of the MAX128BCAI. This additional capability does not compromise backward compatibility for serial-only applications.

Frequently Asked Questions (FAQ)

Q: Can the MAX128BCAI+ directly replace the MAX128BCAI in existing designs?

A: Yes. The MAX128BCAI+ maintains identical channel count (8), resolution (12 bits), sampling rate (8 kHz), and 28-SSOP package dimensions. Pin-to-pin compatibility is preserved for serial interface operation.

Q: What is the significance of the I2C interface addition in the MAX128BCAI+?

A: The MAX128BCAI+ supports both I2C and serial interfaces, whereas the MAX128BCAI supports serial only. Existing designs using serial interface operation are unaffected. The I2C capability provides design flexibility for new implementations.

Q: Does the RoHS3 compliance of the MAX128BCAI+ affect compatibility?

A: No. RoHS3 compliance indicates improved environmental standards in manufacturing and material composition. This does not alter electrical or mechanical compatibility. Applications requiring RoHS compliance benefit from this certification.

Q: Are there any voltage supply differences between these parts?

A: Both devices operate on single supply architecture. The MAX128BCAI+ specifies a supply voltage range of 4.75V to 5.25V. Verify your application's supply voltage against this specification.

Q: What is the moisture sensitivity level for both parts?

A: Both the MAX128BCAI and MAX128BCAI+ carry MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.