MAX412CPA Equivalent & Substitute Parts

Part Overview

The MAX412CPA is a general-purpose operational amplifier featuring two independent circuits in an 8-PDIP through-hole package, manufactured by Analog Devices Inc./Maxim Integrated. This device is classified as obsolete, indicating it is no longer in active production. The MAX412CPA operates across a supply voltage range of 4.8V to 10.5V with a slew rate of 4.5V/µs and gain bandwidth product of 28 MHz, making it suitable for general-purpose amplification applications requiring moderate bandwidth and low power consumption.

Due to its obsolete status, locating new original inventory of the MAX412CPA presents sourcing challenges. Identifying equivalent substitute parts with compatible electrical and mechanical specifications is essential for design continuity and system reliability.

Substiute Parts

MAX412CPA

Analog Devices Inc./Maxim IntegratedIn Stock: 1922MAX412CPA Datasheet

Current PartRFQ

AD8056ANZ

Analog Devices Inc.In Stock: 7391AD8056ANZ Datasheet

MFR RecommendedRFQ

AD8072JNZ

Analog Devices Inc.In Stock: 2493AD8072JNZ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MAX412CPA are selected based on the following critical compatibility criteria:

Mandatory Matching Parameters:

• Package type: 8-DIP (0.300", 7.62mm) through-hole configuration
• Number of circuits: 2 independent amplifier circuits
• Pinout compatibility: Pin-for-pin replacement capability
• Mounting type: Through-hole technology

Electrical Performance Considerations: Substitute parts must accommodate the electrical operating envelope of the original design. The MAX412CPA operates within a 4.8V to 10.5V supply range with moderate bandwidth requirements (28 MHz gain bandwidth product). Substitute devices may exceed these specifications while maintaining functional compatibility within the original circuit topology.

The two substitute parts identified—AD8056ANZ and AD8072JNZ—both feature dual-circuit 8-DIP packaging and through-hole mounting, enabling direct replacement in PCB layouts designed for the MAX412CPA.

Parameter Comparison

Engineering Selection Recommendations

AD8056ANZ Selection Criteria: The AD8056ANZ is classified as an active product with ROHS3 compliance, providing long-term availability and regulatory alignment with modern manufacturing standards. This device features significantly enhanced performance specifications, including a slew rate of 1400V/µs and -3dB bandwidth of 300 MHz, substantially exceeding the MAX412CPA baseline. The AD8056ANZ operates within a 8V to 12V supply range, which overlaps with the upper portion of the MAX412CPA operating envelope. Current supply requirement of 10mA represents a four-fold increase over the original device. The AD8056ANZ is suitable for applications where enhanced bandwidth and slew rate performance are beneficial and where the increased power consumption is acceptable.

AD8072JNZ Selection Criteria: The AD8072JNZ is designated as Last Time Buy, indicating limited future availability. This device implements current feedback topology with a -3dB bandwidth of 100 MHz and slew rate of 500V/µs, providing moderate performance enhancement over the MAX412CPA. Supply voltage range spans 5V to 12V (single supply) or ±2.5V to ±6V (dual supply), accommodating the original device operating range. Current supply of 3.5mA remains close to the original specification. The AD8072JNZ is appropriate for applications requiring modest performance improvement while maintaining power efficiency comparable to the original design.

Both substitute devices achieve ROHS3 compliance, addressing regulatory requirements that the obsolete MAX412CPA does not meet.

Frequently Asked Questions (FAQ)

Q: Can the AD8056ANZ and AD8072JNZ be used interchangeably with the MAX412CPA?

A: Both devices share identical package geometry (8-DIP), circuit count (2), and through-hole mounting, enabling physical and functional replacement. However, electrical performance differs significantly. The AD8056ANZ provides substantially higher bandwidth and slew rate, while the AD8072JNZ offers moderate performance enhancement. Circuit validation is necessary to confirm compatibility with specific application requirements.

Q: What is the primary difference between the AD8056ANZ and AD8072JNZ?

A: The AD8056ANZ implements voltage feedback topology with -3dB bandwidth of 300 MHz and slew rate of 1400V/µs. The AD8072JNZ implements current feedback topology with -3dB bandwidth of 100 MHz and slew rate of 500V/µs. The AD8056ANZ is an active product; the AD8072JNZ is Last Time Buy. Selection depends on bandwidth requirements and long-term availability needs.

Q: Does the increased slew rate of substitute parts affect circuit operation?

A: Higher slew rate capability does not degrade circuit performance in applications designed for the MAX412CPA. Excess slew rate remains unused in bandwidth-limited applications. However, circuits sensitive to high-frequency noise or stability margins may require evaluation.

Q: Are the supply voltage ranges of substitute parts compatible with MAX412CPA designs?

A: The MAX412CPA operates from 4.8V to 10.5V. The AD8056ANZ requires 8V to 12V minimum, which does not accommodate the lower 4.8V to 7.9V range. The AD8072JNZ supports 5V to 12V single supply, covering most of the original range above 5V. Designs operating below 5V require the AD8056ANZ or alternative solutions.

Q: What is the significance of RoHS compliance for substitute selection?

A: The MAX412CPA is RoHS non-compliant. Both substitute devices achieve ROHS3 compliance, meeting current environmental and regulatory standards for new designs and manufacturing processes. RoHS compliance is mandatory for many OEM applications and supply chain requirements.

Q: Is pinout compatibility guaranteed between these devices?

A: All three devices utilize 8-DIP packaging with identical physical dimensions (0.300", 7.62mm). Pinout compatibility for dual operational amplifier configurations in 8-DIP packages is standardized. Direct PCB replacement is supported without layout modification.