MAX1203ACAP Equivalent & Substitute Parts

Part Overview

The MAX1203ACAP 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. The device features 4 or 8 configurable input channels with differential and single-ended input support, operating at a sampling rate of 133 kSPS with SPI data interface.

The MAX1203ACAP is classified as obsolete. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support long-term product availability for applications currently utilizing this component.

Substiute Parts

MAX1203ACAP

Analog Devices Inc./Maxim IntegratedIn Stock: 792MAX1203ACAP Datasheet

Current PartRFQ

MAX1203ACAP+

Analog Devices Inc./Maxim IntegratedIn Stock: 1197MAX1203ACAP+ Datasheet

DirectRFQ

MAX1203BCAP+

Analog Devices Inc./Maxim IntegratedIn Stock: 977MAX1203BCAP+ Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MAX1203ACAP are identified based on strict electrical and mechanical parameter equivalence within the MAX1203 product family. The substitution logic is based on the following criteria:

Core Equivalence Parameters:

• Resolution: 12 bits
• Sampling Rate: 133 kSPS
• Input Channels: 4, 8 configurable
• Input Type: Differential and Single Ended support
• Data Interface: SPI
• Architecture: SAR
• Reference Type: External
• Supply Voltages: Analog (±5V, 5V) and Digital (2.7V ~ 5.25V)
• Operating Temperature: 0°C ~ 70°C
• Package: 20-SSOP

All identified substitutes maintain identical electrical specifications and package form factor. Differences exist only in product status, packaging format, and compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

MAX1203ACAP+ (Direct Manufacturer Substitute): The MAX1203ACAP+ is the primary substitute for the obsolete MAX1203ACAP. Both parts share identical electrical specifications and package form factor. The MAX1203ACAP+ is currently in active production status with ROHS3 compliance certification, making it suitable for new designs and legacy system replacements. Packaging is supplied in tube format.

MAX1203BCAP+ (Parametric Equivalent): The MAX1203BCAP+ is a parametric equivalent offering identical electrical performance and package specifications to the MAX1203ACAP. This part is also in active production with ROHS3 compliance. Selection between MAX1203ACAP+ and MAX1203BCAP+ should be based on availability, lead time, and supplier inventory status, as both parts are functionally interchangeable within the specified electrical and mechanical parameters.

Compliance Consideration: Both substitute parts (MAX1203ACAP+ and MAX1203BCAP+) are ROHS3 compliant, whereas the original MAX1203ACAP is RoHS non-compliant. This compliance upgrade may be relevant for applications subject to environmental or regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can MAX1203ACAP+ and MAX1203BCAP+ be used interchangeably with MAX1203ACAP?

A: Yes. Both substitute parts maintain identical electrical specifications, including 12-bit resolution, 133 kSPS sampling rate, 4/8 configurable input channels, SPI interface, and 20-SSOP package form factor. Pin-to-pin compatibility and functional equivalence are confirmed across all specified parameters.

Q: What is the difference between MAX1203ACAP+ and MAX1203BCAP+?

A: Both parts are functionally equivalent with identical electrical and mechanical specifications. The primary differences are product designation and availability. Selection should be based on supplier inventory, lead time, and procurement requirements.

Q: Are there any package or mounting differences between these parts?

A: No. All three parts (MAX1203ACAP, MAX1203ACAP+, and MAX1203BCAP+) use the same 20-SSOP surface mount package with 0.209" width (5.30mm). Both substitute parts are supplied in tube packaging format.

Q: Why is the original MAX1203ACAP obsolete?

A: The MAX1203ACAP has been discontinued by the manufacturer. The active production alternatives (MAX1203ACAP+ and MAX1203BCAP+) provide continued access to this functionality with improved compliance status.

Q: Are there compliance differences I should consider?

A: Yes. The original MAX1203ACAP is RoHS non-compliant, while both substitute parts (MAX1203ACAP+ and MAX1203BCAP+) are ROHS3 compliant. This may be relevant for applications subject to environmental regulations or customer requirements.

Q: Can I use these parts in new designs?

A: Yes. MAX1203ACAP+ and MAX1203BCAP+ are both in active production status and are suitable for new design implementations. The ROHS3 compliance of these parts makes them preferable to the obsolete, non-compliant original part.