MAX1281BCUP Equivalent & Substitute Parts

Part Overview

The MAX1281BCUP is a 12-bit Analog to Digital Converter (ADC) manufactured by Analog Devices Inc./Maxim Integrated, designed for data acquisition applications requiring multi-channel input sampling. This SAR (Successive Approximation Register) architecture device features 4 or 8 selectable input channels with pseudo-differential and single-ended input configurations, communicating via SPI interface.

The MAX1281BCUP is classified as obsolete. Identifying equivalent and substitute parts is necessary to ensure continued availability for new designs, production continuity, and long-term system support where original components are no longer manufactured or stocked.

Substiute Parts

MAX1281BCUP

Analog Devices Inc./Maxim IntegratedIn Stock: 1193MAX1281BCUP Datasheet

Current PartRFQ

MAX1281BCUP+

Analog Devices Inc./Maxim IntegratedIn Stock: 1024MAX1281BCUP+ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MAX1281BCUP are identified based on electrical and mechanical parameter equivalence. The following criteria determine substitutability:

Primary Equivalence Parameters:

• Resolution: 12 bits
• Sampling Rate: 300 kSPS
• Input Channel Configuration: 4 or 8 channels
• Input Type: Pseudo-Differential and Single Ended support
• Data Interface: SPI protocol
• Architecture: SAR topology
• Reference Configuration: External and Internal reference support
• Supply Voltage Range: 2.7V ~ 3.6V (both analog and digital)
• Operating Temperature: 0°C ~ 70°C
• Package: 20-TSSOP form factor
• Mounting: Surface Mount

Substitutes must maintain identical electrical performance characteristics and physical package compatibility to ensure direct replacement capability without circuit redesign.

Parameter Comparison

Engineering Selection Recommendations

The MAX1281BCUP+ is the direct substitute for the MAX1281BCUP. Both components are manufactured by Analog Devices Inc./Maxim Integrated and provide identical electrical and mechanical specifications.

Key Differentiation:

The MAX1281BCUP+ is classified as Active product status, ensuring continued manufacturing support and availability. The MAX1281BCUP is Obsolete, making the MAX1281BCUP+ the recommended selection for new designs and production continuity.

The MAX1281BCUP+ achieves ROHS3 compliance, whereas the original MAX1281BCUP is RoHS non-compliant. This compliance improvement aligns with current environmental and regulatory standards for electronic components in most markets.

Both components maintain identical Moisture Sensitivity Level (MSL 1 - Unlimited) and REACH Unaffected status, ensuring equivalent handling and regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can MAX1281BCUP+ directly replace MAX1281BCUP in existing designs?

A: Yes. The MAX1281BCUP+ provides identical electrical performance, pin configuration, and package specifications. No circuit modifications are required for direct substitution.

Q: What is the difference between MAX1281BCUP and MAX1281BCUP+?

A: The primary differences are product status and RoHS compliance. The MAX1281BCUP+ is an active product with ROHS3 compliance, while the MAX1281BCUP is obsolete and RoHS non-compliant. Electrical and mechanical specifications are identical.

Q: Are there packaging differences between these parts?

A: Both components use the 20-TSSOP package with identical dimensions (0.173" width, 4.40mm). The MAX1281BCUP+ is supplied in Tube packaging, while the original MAX1281BCUP packaging specification is not detailed. Both are Surface Mount devices.

Q: What supply voltage range do these ADCs support?

A: Both the MAX1281BCUP and MAX1281BCUP+ operate with analog and digital supply voltages ranging from 2.7V to 3.6V, supporting low-power applications and battery-operated systems.

Q: How many input channels are available?

A: Both devices support configurable 4 or 8 input channels with pseudo-differential and single-ended input types, selectable via internal multiplexer configuration.

Q: What is the SPI data interface specification?

A: Both components communicate via SPI interface with a 12-bit data output. Specific SPI timing and protocol details are defined in the device datasheets.

Q: Are moisture sensitivity considerations different between these parts?

A: No. Both components have identical Moisture Sensitivity Level (MSL 1 - Unlimited), indicating no moisture sensitivity restrictions for storage and handling.