MAX1270ACNG Equivalent & Substitute Parts

Part Overview

The MAX1270ACNG is a 12-bit Analog-to-Digital Converter (ADC) manufactured by Analog Devices Inc./Maxim Integrated, designed for data acquisition applications requiring 8 single-ended analog inputs with a 110 kHz sampling rate. The device features a successive approximation register (SAR) architecture with integrated multiplexer and sample-and-hold circuitry, communicating via SPI interface. The MAX1270ACNG is classified as obsolete, making identification of compatible alternatives essential for ongoing system support and new design implementations.

Substiute Parts

MAX1270ACNG

Analog Devices Inc./Maxim IntegratedIn Stock: 2213MAX1270ACNG Datasheet

Current PartRFQ

MAX1270ACNG+

Analog Devices Inc./Maxim IntegratedIn Stock: 1104MAX1270ACNG+ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MAX1270ACNG is determined by strict equivalence across the following critical parameters: 12-bit resolution, 8 single-ended input channels, 110 kHz sampling rate, SPI data interface compatibility, SAR architecture, 5V single supply operation, 24-DIP through-hole package, and 0°C to 70°C operating temperature range. The MAX1270ACNG+ qualifies as a direct substitute based on identical electrical specifications and mechanical compatibility. The primary distinction between the main part and its substitute relates to product status and compliance certifications rather than functional performance.

Parameter Comparison

Engineering Selection Recommendations

The MAX1270ACNG+ is the direct functional equivalent for MAX1270ACNG applications. Selection between these parts should be based on the following criteria:

For legacy system maintenance and repair where original specifications must be preserved, the MAX1270ACNG remains the exact electrical match, though availability is limited to existing inventory.

For new designs or system upgrades, the MAX1270ACNG+ is the preferred selection due to active product status, ROHS3 compliance, and improved supply voltage tolerance (4.75V to 5.25V versus fixed 5V). The MAX1270ACNG+ maintains full backward compatibility with existing MAX1270ACNG designs while offering enhanced regulatory compliance and broader voltage operating margins.

Both parts share identical pin configurations, package dimensions, and core electrical performance characteristics, enabling direct socket replacement without circuit modification.

Frequently Asked Questions (FAQ)

Q: Can MAX1270ACNG+ directly replace MAX1270ACNG in existing designs?

A: Yes. Both devices share identical pin configurations, 24-DIP package dimensions, 12-bit resolution, 8-channel single-ended input architecture, 110 kHz sampling rate, and SPI interface. Direct socket replacement is possible without circuit redesign.

Q: What is the primary difference between MAX1270ACNG and MAX1270ACNG+?

A: The MAX1270ACNG+ is an active product with ROHS3 compliance and improved supply voltage tolerance (4.75V to 5.25V). The MAX1270ACNG is obsolete and non-compliant. Functionally, both devices deliver identical performance for data acquisition applications.

Q: Are there supply voltage compatibility concerns when substituting MAX1270ACNG+ for MAX1270ACNG?

A: No. The MAX1270ACNG+ accepts 4.75V to 5.25V, which encompasses the 5V nominal supply of the original MAX1270ACNG. Systems operating at 5V nominal supply are fully compatible with the substitute part.

Q: Does the MAX1270ACNG+ support additional data interfaces beyond SPI?

A: Yes. The MAX1270ACNG+ supports SPI, QSPI, MICROWIRE, and Serial interfaces. However, only SPI interface is required for MAX1270ACNG compatibility. Additional interface options do not affect backward compatibility.

Q: What packaging options are available for MAX1270ACNG+?

A: The MAX1270ACNG+ is supplied in 24-DIP through-hole package, matching the original MAX1270ACNG. Tube packaging is available for the substitute part.

Q: Is the MAX1270ACNG+ suitable for new product designs?

A: Yes. The MAX1270ACNG+ is an active product with full regulatory compliance, making it the appropriate choice for new designs requiring 12-bit, 8-channel, 110 kHz ADC functionality in 24-DIP package format.