MAX1245ACAP Equivalent & Substitute Parts

Part Overview

The MAX1245ACAP is a 12-bit Analog-to-Digital Converter (ADC) manufactured by Analog Devices Inc./Maxim Integrated, designed for data acquisition applications requiring SAR (Successive Approximation Register) architecture. This device features 4 or 8 configurable input channels with differential and single-ended input support, operating at a 100 kHz sampling rate with SPI data interface.

The MAX1245ACAP is classified as obsolete. Identifying equivalent and substitute parts is necessary to ensure continued availability for system maintenance, production continuity, and component sourcing flexibility.

Substiute Parts

MAX1245ACAP

Analog Devices Inc./Maxim IntegratedIn Stock: 858MAX1245ACAP Datasheet

Current PartRFQ

MAX1245BCAP+

Analog Devices Inc./Maxim IntegratedIn Stock: 1067MAX1245BCAP+ Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MAX1245ACAP is determined by strict parametric equivalence across the following critical criteria:

• Resolution & Sampling Rate: 12-bit resolution at 100 kHz sampling rate
• Channel Configuration: 4 or 8 input channels with differential and single-ended capability
• Interface Protocol: SPI data interface
• Architecture: SAR-based conversion
• Supply Voltage Compatibility: Analog and digital supply ranges of 2.375V ~ 3.3V
• Operating Temperature: 0°C ~ 70°C range
• Package & Pinout: 20-SSOP surface mount package with identical physical dimensions

The MAX1245BCAP+ meets all parametric requirements for direct substitution with the MAX1245ACAP. Both devices share identical electrical specifications, functional architecture, and package configuration.

Parameter Comparison

Engineering Selection Recommendations

The MAX1245BCAP+ is a direct parametric equivalent to the MAX1245ACAP and serves as the primary substitute option. Key considerations for component selection:

Product Status: Both devices are classified as obsolete. The MAX1245BCAP+ offers improved compliance status, meeting ROHS3 requirements compared to the MAX1245ACAP's non-compliant status.

Regulatory Compliance: The MAX1245BCAP+ carries ROHS3 Compliant certification, making it suitable for applications subject to RoHS directives. Both parts maintain REACH Unaffected and EAR99 ECCN classifications.

Packaging: The MAX1245BCAP+ is supplied in Tube packaging, whereas the MAX1245ACAP packaging specification is not detailed. Both maintain identical 20-SSOP package geometry and surface mount configuration.

Inventory Availability: The MAX1245BCAP+ shows higher current inventory (974 Pcs) compared to MAX1245ACAP (798 Pcs), supporting sourcing continuity.

Frequently Asked Questions (FAQ)

Q: Can MAX1245BCAP+ directly replace MAX1245ACAP in existing designs?

A: Yes. The MAX1245BCAP+ is a parametric equivalent with identical electrical specifications, pin configuration, and functional architecture. No circuit modifications are required for direct substitution.

Q: What is the difference between MAX1245ACAP and MAX1245BCAP+?

A: The primary differences are packaging format (Tube for MAX1245BCAP+) and RoHS compliance status (ROHS3 Compliant for MAX1245BCAP+ versus non-compliant for MAX1245ACAP). All electrical and functional parameters are identical.

Q: Are there any temperature or supply voltage differences?

A: No. Both devices operate identically across the 0°C ~ 70°C temperature range and require 2.375V ~ 3.3V for both analog and digital supply voltages.

Q: Does the 20-SSOP package remain the same for both parts?

A: Yes. Both MAX1245ACAP and MAX1245BCAP+ use the 20-SSOP package with 0.209" width (5.30mm). PCB footprints and land patterns are identical.

Q: What is the significance of the external reference type?

A: Both devices require an external voltage reference for ADC operation. The reference voltage must be within the specified supply voltage range and properly decoupled according to application requirements.

Q: Are SPI interface timing and protocol identical between the two parts?

A: Yes. Both devices implement identical SPI data interface protocols and timing specifications, ensuring software and firmware compatibility without modification.