MAX199ACAI Equivalent & Substitute Parts

Part Overview

The MAX199ACAI is a 12-bit Analog-to-Digital Converter (ADC) manufactured by Analog Devices Inc./Maxim Integrated, designed for data acquisition applications requiring 8 single-ended input channels with a 100 kHz sampling rate. The device features a Successive Approximation Register (SAR) architecture with parallel data interface and operates from a single 5V supply. The MAX199ACAI is classified as obsolete, making identification of functionally equivalent substitute parts essential for ongoing system support, design updates, and procurement continuity.

Substiute Parts

MAX199ACAI

Analog Devices Inc./Maxim IntegratedIn Stock: 2384MAX199ACAI Datasheet

Current PartRFQ

MAX199ACAI+

Analog Devices Inc./Maxim IntegratedIn Stock: 1122MAX199ACAI+ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MAX199ACAI is determined by strict equivalence across the following critical parameters:

• Resolution: 12 bits (no deviation permitted)
• Channel Count: 8 single-ended inputs (no deviation permitted)
• Sampling Rate: 100 kHz (no deviation permitted)
• Data Interface: Parallel (no deviation permitted)
• Package: 28-SSOP form factor (no deviation permitted)
• Operating Temperature: 0°C to 70°C (no deviation permitted)
• Supply Voltage Compatibility: 5V nominal operation

The MAX199ACAI+ qualifies as a direct substitute based on identical electrical specifications and mechanical compatibility. The primary distinction is product status and compliance certification, not functional capability.

Parameter Comparison

Engineering Selection Recommendations

The MAX199ACAI+ is the direct functional equivalent of the MAX199ACAI. Selection between these parts is determined by regulatory and compliance requirements rather than electrical or mechanical differences.

For new designs or systems requiring RoHS3 compliance: The MAX199ACAI+ is the appropriate selection, as it maintains full electrical and mechanical compatibility while meeting current environmental regulations.

For legacy system maintenance or repair: The MAX199ACAI remains functionally suitable if RoHS compliance is not a requirement. However, the MAX199ACAI+ is preferred due to its active product status and improved supply chain availability.

Supply voltage tolerance: The MAX199ACAI+ specifies a tighter supply voltage range (4.75V to 5.25V) compared to the nominal 5V specification of the MAX199ACAI. Both parts operate within standard 5V logic supply systems without modification.

Frequently Asked Questions (FAQ)

Q: Can the MAX199ACAI+ be used as a direct replacement for the MAX199ACAI in existing designs?

A: Yes. The MAX199ACAI+ is electrically and mechanically identical to the MAX199ACAI. No circuit modifications, firmware changes, or PCB redesign are required. Pin configuration, signal timing, and data format are unchanged.

Q: What is the difference between MAX199ACAI and MAX199ACAI+?

A: The primary differences are product status and compliance certification. The MAX199ACAI is obsolete and RoHS non-compliant. The MAX199ACAI+ is an active product with ROHS3 compliance. Electrical specifications and package form factor are identical.

Q: Are there any supply voltage differences I should account for?

A: The MAX199ACAI+ specifies a supply voltage range of 4.75V to 5.25V, while the MAX199ACAI is specified at nominal 5V. Both parts operate from standard 5V logic supplies. If your system uses regulated 5V power, no adjustment is necessary.

Q: Is the 28-SSOP package identical between both parts?

A: Yes. Both parts use the 28-SSOP package with identical pin assignments, mechanical dimensions (0.209" width, 5.30mm), and surface mount compatibility. No PCB layout changes are required.

Q: Why is the MAX199ACAI marked as obsolete?

A: The MAX199ACAI has been superseded by the MAX199ACAI+. Analog Devices Inc./Maxim Integrated has transitioned production to the newer variant, which includes improved compliance certifications and active manufacturing support.

Q: Can I mix MAX199ACAI and MAX199ACAI+ parts in the same production batch?

A: Yes. Both parts are functionally equivalent and can be used interchangeably in the same circuit without performance degradation or compatibility issues.