MAX149BCAP+ Equivalent & Substitute Parts

Part Overview

The MAX149BCAP+ is a 10-bit Analog-to-Digital Converter (ADC) manufactured by Analog Devices Inc./Maxim Integrated, designed for data acquisition applications requiring multi-channel input processing. This SAR (Successive Approximation Register) architecture device operates across a wide supply voltage range and supports both differential and single-ended input configurations via SPI interface. The part is currently in active production status with ROHS3 compliance and unlimited moisture sensitivity rating, making it suitable for industrial and commercial applications.

Alternative models may be required due to inventory constraints, design revisions, or specific temperature grade requirements within the MAX149 product family.

Substiute Parts

MAX149BCAP+

Analog Devices Inc./Maxim IntegratedIn Stock: 3488MAX149BCAP+ Datasheet

Current PartRFQ

MAX149BCAP+

Analog Devices Inc./Maxim IntegratedIn Stock: 3488MAX149BCAP+ Datasheet

DirectRFQ

MAX149ACAP+

Analog Devices Inc./Maxim IntegratedIn Stock: 3226MAX149ACAP+ Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MAX149BCAP+ is determined by strict parameter matching across electrical and mechanical specifications. The following criteria define valid substitutes:

Critical Matching Parameters:

• Resolution: 10 bits
• Sampling Rate: 133 kSPS
• Number of Input Channels: 4, 8
• Input Type: Differential, Single Ended
• Data Interface: SPI
• Architecture: SAR
• Reference Type: External, Internal
• Analog Supply Voltage: 2.7V ~ 5.25V
• Digital Supply Voltage: 2.7V ~ 5.25V
• Package Type: 20-SSOP
• Mounting Type: Surface Mount

The MAX149ACAP+ meets all critical electrical and mechanical parameters, differing only in temperature grade classification within the same product family. Both parts share identical functional specifications, pinout, and package footprint, enabling direct substitution in applications operating within the 0°C ~ 70°C temperature range.

Parameter Comparison

Engineering Selection Recommendations

Both MAX149BCAP+ and MAX149ACAP+ are active production parts with identical ROHS3 compliance and REACH unaffected status. Selection between these parts should be based on inventory availability and application requirements within the specified 0°C ~ 70°C operating temperature range. Both parts carry unlimited moisture sensitivity rating (MSL 1), eliminating moisture-related handling constraints. The identical electrical specifications, pinout configuration, and 20-SSOP package footprint ensure functional interchangeability without circuit redesign or PCB layout modification.

Frequently Asked Questions (FAQ)

Q: Can MAX149ACAP+ replace MAX149BCAP+ in existing designs? A: Yes. Both parts share identical electrical specifications, pinout, and package footprint. Direct substitution is possible without circuit modification.

Q: Are there differences in temperature performance between these parts? A: Both parts operate across the same 0°C ~ 70°C temperature range. No performance differentiation exists within this specification.

Q: Do these parts require different PCB layouts or footprints? A: No. Both use the 20-SSOP package with identical pin assignments and mechanical dimensions (0.209", 5.30mm width).

Q: What is the significance of the temperature grade suffix in the part number? A: The suffix indicates the temperature grade classification. Both B and A grades operate within 0°C ~ 70°C, making them functionally equivalent for this temperature range.

Q: Are compliance certifications identical between these parts? A: Yes. Both parts are ROHS3 compliant, REACH unaffected, and carry MSL 1 (unlimited) moisture sensitivity rating.

Q: Can these parts be used interchangeably in production? A: Yes, provided both parts are sourced from Analog Devices Inc./Maxim Integrated and meet the specified electrical and mechanical parameters listed in this document.