MAX188ACPP Equivalent & Substitute Parts

Part Overview

The MAX188ACPP is a 12-bit Analog-to-Digital Converter (ADC) manufactured by Analog Devices Inc./Maxim Integrated, designed for data acquisition applications requiring moderate sampling rates and flexible input configurations. This device features a Successive Approximation Register (SAR) architecture with support for both differential and single-ended inputs, operating at a sampling rate of 133 kSPS across 4 or 8 input channels.

The MAX188ACPP is classified as an obsolete product. Finding equivalent or substitute components is necessary to support legacy system maintenance, ensure supply chain continuity, and maintain design compatibility in applications where this device is currently deployed.

Substiute Parts

MAX188ACPP

Analog Devices Inc./Maxim IntegratedIn Stock: 917MAX188ACPP Datasheet

Current PartRFQ

MAX188ACPP+

Analog Devices Inc./Maxim IntegratedIn Stock: 1175MAX188ACPP+ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MAX188ACPP is determined by strict alignment of the following critical parameters:

• Resolution: 12 bits (exact match required)
• Sampling Rate: 133 kSPS (exact match required)
• Number of Input Channels: 4 or 8 channels (exact match required)
• Input Configuration: Differential and Single Ended support (exact match required)
• Data Interface: SPI protocol compatibility (exact match required)
• Architecture: SAR-based conversion (exact match required)
• Supply Voltage: ±5V or 5V operation (exact match required)
• Package: 20-DIP form factor (exact match required)
• Mounting Type: Through Hole (exact match required)

The MAX188ACPP+ qualifies as a direct substitute based on matching all critical electrical and mechanical parameters while offering improved product status and compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The MAX188ACPP+ is the qualified substitute for the MAX188ACPP based on the following engineering criteria:

Product Status: The MAX188ACPP+ maintains Active product status, ensuring continued manufacturer support, availability, and technical documentation. The original MAX188ACPP is classified as Obsolete, creating supply chain risk and limiting access to technical resources.

Compliance and Certifications: The MAX188ACPP+ achieves ROHS3 compliance, meeting current environmental and regulatory requirements. The original MAX188ACPP is RoHS non-compliant, which may present procurement and regulatory challenges in applications subject to RoHS directives.

Electrical and Mechanical Compatibility: Both devices share identical core specifications: 12-bit resolution, 133 kSPS sampling rate, 20-DIP package, Through Hole mounting, and ±5V supply voltage operation. The MAX188ACPP+ supports expanded data interface options (MICROWIRE™, QSPI™, Serial, SPI™) while maintaining full SPI compatibility with the original design.

Functional Equivalence: The MAX188ACPP+ provides direct functional replacement with no circuit redesign required. Existing PCB layouts, firmware implementations, and system integration remain valid.

Frequently Asked Questions (FAQ)

Q: Can the MAX188ACPP+ be used as a direct replacement for the MAX188ACPP without circuit modifications?

A: Yes. The MAX188ACPP+ is electrically and mechanically equivalent to the MAX188ACPP. Both devices operate at 12-bit resolution, 133 kSPS sampling rate, support identical input configurations, and use the same 20-DIP package. No circuit redesign is required.

Q: What are the key differences between the MAX188ACPP and MAX188ACPP+?

A: The primary differences are product status and compliance. The MAX188ACPP+ is an Active product with ROHS3 compliance, while the MAX188ACPP is Obsolete and RoHS non-compliant. The MAX188ACPP+ also supports additional data interface protocols (MICROWIRE™, QSPI™, Serial) beyond the SPI interface of the original device.

Q: Are there any supply voltage differences between these devices?

A: Both devices operate with ±5V supply voltage. The MAX188ACPP specification lists both ±5V and 5V options, while the MAX188ACPP+ specifies ±5V operation. Verify your application's specific supply voltage requirements against the detailed datasheet.

Q: Is the 20-DIP package identical between both parts?

A: Yes. Both the MAX188ACPP and MAX188ACPP+ use the 20-DIP (0.300", 7.62mm) package with Through Hole mounting. PCB footprints and mechanical layouts are identical.

Q: What is the significance of the ROHS3 compliance on the MAX188ACPP+?

A: ROHS3 compliance indicates the MAX188ACPP+ meets current Restriction of Hazardous Substances directives, making it suitable for applications subject to environmental and regulatory requirements. The original MAX188ACPP's RoHS non-compliance may restrict its use in regulated industries or regions with RoHS enforcement.

Q: Can I use the MAX188ACPP+ in legacy systems designed for the MAX188ACPP?

A: Yes. The MAX188ACPP+ is functionally equivalent and pin-compatible. Existing firmware, PCB designs, and system integration remain valid. The expanded data interface support of the MAX188ACPP+ does not affect SPI-based implementations.