MAX188DEWP Equivalent & Substitute Parts

Part Overview

The MAX188DEWP is a 12-bit Data Acquisition System (DAS) with 8 channels, 133k sampling rate, and serial data interface, manufactured by Analog Devices Inc./Maxim Integrated. This component is classified as obsolete, which necessitates identification of functionally equivalent alternatives for ongoing system support and new designs. The MAX188DEWP operates across the industrial temperature range of -40°C to 85°C and is packaged in a 20-SOIC surface mount configuration.

Substiute Parts

MAX188DEWP

Analog Devices Inc./Maxim IntegratedIn Stock: 3466MAX188DEWP Datasheet

Current PartRFQ

MAX188DEWP+

Analog Devices Inc./Maxim IntegratedIn Stock: 869MAX188DEWP+ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MAX188DEWP is determined by strict equivalence across the following critical parameters:

• Channel Count: 8 channels (fixed requirement)
• Resolution: 12 bits (fixed requirement)
• Sampling Rate: 133k samples per second (fixed requirement)
• Package: 20-SOIC form factor (fixed requirement)
• Operating Temperature Range: -40°C to 85°C (fixed requirement)
• Voltage Supply Architecture: Dual ± supply (fixed requirement)

The MAX188DEWP+ meets all these criteria and is identified as a direct substitute. The primary distinction is product status: MAX188DEWP+ is active and available, whereas MAX188DEWP is obsolete. Both components share identical channel configuration, resolution, sampling rate, package geometry, and thermal operating range.

Parameter Comparison

Engineering Selection Recommendations

The MAX188DEWP+ is the direct functional equivalent for MAX188DEWP replacement. Selection of MAX188DEWP+ is supported by the following factors:

Product Availability: MAX188DEWP+ maintains active product status with current manufacturing support, whereas MAX188DEWP is obsolete and subject to inventory depletion.

Regulatory Compliance: MAX188DEWP+ achieves ROHS3 compliance, meeting current environmental and material restriction requirements. The original MAX188DEWP is non-compliant with modern RoHS standards.

Electrical and Mechanical Compatibility: Both components are electrically and mechanically interchangeable within the specified parameter set. Identical channel count, resolution, sampling rate, supply voltage architecture, operating temperature range, and 20-SOIC package ensure direct substitution without circuit redesign.

Interface Capability: MAX188DEWP+ supports expanded serial interface options (MICROWIRE™, QSPI™, SPI™) in addition to the base serial interface, providing enhanced flexibility for system integration.

Frequently Asked Questions (FAQ)

Q: Can MAX188DEWP+ be used as a direct replacement for MAX188DEWP in existing designs?

A: Yes. Both components share identical electrical specifications across all critical parameters: 8 channels, 12-bit resolution, 133k sampling rate, dual ± supply voltage, -40°C to 85°C operating range, and 20-SOIC package. No circuit modifications are required.

Q: What is the primary reason for substitution?

A: MAX188DEWP is classified as obsolete. MAX188DEWP+ is the active equivalent that maintains full functional compatibility while providing current manufacturing availability and ROHS3 compliance.

Q: Are there packaging differences between MAX188DEWP and MAX188DEWP+?

A: No. Both components use identical 20-SOIC (0.295", 7.50mm Width) surface mount packaging. PCB layout and mechanical mounting are unchanged.

Q: Does MAX188DEWP+ support the same data interfaces as MAX188DEWP?

A: MAX188DEWP+ supports serial interface plus additional protocol options (MICROWIRE™, QSPI™, SPI™). Systems using only serial interface operation experience no functional difference. Systems capable of utilizing expanded interface protocols gain additional flexibility.

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

A: Both MAX188DEWP and MAX188DEWP+ are rated MSL 1 (Unlimited), indicating no moisture sensitivity restrictions for storage or handling.

Q: Are there supply voltage differences?

A: Both components operate on dual ± supply architecture. MAX188DEWP+ specifies ±5V supply voltage. Verify supply voltage compatibility with your system design.