MAX198ACWI Equivalent & Substitute Parts

Part Overview

The MAX198ACWI is a 12-bit Analog-to-Digital Converter (ADC) manufactured by Analog Devices Inc./Maxim Integrated, designed for data acquisition applications requiring single-ended input conversion. This device features 6 input channels, a SAR (Successive Approximation Register) architecture, and a sampling rate of 100 kSPS with parallel data interface output. The part is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations.

Substiute Parts

MAX198ACWI

Analog Devices Inc./Maxim IntegratedIn Stock: 940MAX198ACWI Datasheet

Current PartRFQ

MAX198ACWI+

Analog Devices Inc./Maxim IntegratedIn Stock: 921MAX198ACWI+ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MAX198ACWI is determined by strict alignment of the following critical parameters:

• Resolution: 12 bits (exact match required)
• Number of Channels: 6 input channels (exact match required)
• Sampling Rate: 100 kSPS (exact match required)
• Input Configuration: Single-ended (exact match required)
• Data Interface: Parallel output (exact match required)
• Architecture: SAR-based conversion (exact match required)
• Package: 28-SOIC form factor (exact match required)
• Supply Voltage: 5V operation (compatible range acceptable)
• Operating Temperature: 0°C to 70°C (exact match required)

The MAX198ACWI+ qualifies as a direct substitute based on full alignment with all critical electrical and mechanical parameters. The primary distinction is product status: MAX198ACWI+ is active production, whereas the original part is obsolete.

Parameter Comparison

Engineering Selection Recommendations

The MAX198ACWI+ is the direct functional equivalent for MAX198ACWI replacement applications. Selection of MAX198ACWI+ is supported by the following engineering factors:

• Functional Equivalence: Identical electrical specifications across all critical parameters including resolution, channel count, sampling rate, and interface protocol.
• Pin Compatibility: 28-SOIC package with identical pinout enables direct PCB substitution without layout modification.
• Supply Voltage Tolerance: MAX198ACWI+ operates across 4.75V to 5.25V, providing improved tolerance margins compared to the nominal 5V specification of the original part.
• Product Status: MAX198ACWI+ is in active production, ensuring long-term availability and supply chain continuity.
• Regulatory Compliance: MAX198ACWI+ meets ROHS3 compliance requirements, addressing modern environmental and regulatory standards that the obsolete MAX198ACWI does not satisfy.
• Packaging: Both tube and alternative packaging options are available for MAX198ACWI+, supporting various procurement and assembly workflows.

Frequently Asked Questions (FAQ)

Q: Can MAX198ACWI+ be used as a direct replacement for MAX198ACWI in existing designs?

A: Yes. MAX198ACWI+ provides identical electrical performance and pin compatibility. The 28-SOIC package footprint is identical, enabling direct PCB substitution without design modification.

Q: What are the key differences between MAX198ACWI and MAX198ACWI+?

A: The primary differences are product status (obsolete vs. active production) and regulatory compliance (non-RoHS vs. ROHS3 compliant). Electrical specifications and functional performance are equivalent.

Q: Are there any supply voltage considerations when substituting MAX198ACWI with MAX198ACWI+?

A: MAX198ACWI+ operates across 4.75V to 5.25V, providing a wider tolerance band than the nominal 5V specification. This improved tolerance does not create compatibility issues in standard 5V supply applications.

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

A: Yes. Both parts use the 28-SOIC package with 0.295" width and 7.50mm body dimension. PCB footprints are directly compatible.

Q: What is the significance of ROHS3 compliance on MAX198ACWI+?

A: ROHS3 compliance indicates conformance to current environmental and hazardous substance restrictions. This is relevant for applications subject to regulatory requirements or customer specifications mandating RoHS compliance.

Q: Are there inventory or lead time advantages to selecting MAX198ACWI+?

A: MAX198ACWI+ is in active production with established supply chains. MAX198ACWI is obsolete with limited remaining inventory. MAX198ACWI+ provides superior long-term availability and supply chain stability.