MAX4414ESA Equivalent & Substitute Parts

Part Overview

The MAX4414ESA is a voltage feedback amplifier manufactured by Analog Devices Inc./Maxim Integrated, designed for rail-to-rail operation in 8-SOIC surface mount packaging. This single-circuit linear amplifier operates across a 2.7V to 5.5V supply range with a slew rate of 200V/µs and -3dB bandwidth of 400 MHz.

The MAX4414ESA is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production requirements for applications utilizing this amplifier topology.

Substiute Parts

MAX4414ESA

Analog Devices Inc./Maxim IntegratedIn Stock: 2024MAX4414ESA Datasheet

Current PartRFQ

MAX4414ESA+

Analog Devices Inc./Maxim IntegratedIn Stock: 1189MAX4414ESA+ Datasheet

DirectRFQ

THS4221D

Texas InstrumentsIn Stock: 1293THS4221D Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MAX4414ESA are identified based on strict electrical and mechanical compatibility criteria. The following parameters define acceptable substitution:

Primary Compatibility Criteria:

• Amplifier Type: Voltage Feedback
• Number of Circuits: 1
• Output Type: Rail-to-Rail
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Mounting Type: Surface Mount
• Operating Temperature Range: -40°C to 85°C minimum

Secondary Compatibility Criteria:

• Voltage - Supply Span (Min): 2.7V or lower
• Voltage - Supply Span (Max): 5.5V or higher
• Current - Output / Channel: 75 mA or greater

Substitute parts must maintain electrical performance within the operational envelope of the original device. Parts are grouped into two categories: direct manufacturer equivalents and alternative manufacturer solutions.

Parameter Comparison

Engineering Selection Recommendations

MAX4414ESA+ (Direct Manufacturer Equivalent)

The MAX4414ESA+ is the direct successor from Analog Devices Inc./Maxim Integrated. It maintains identical electrical specifications across all measured parameters: slew rate, bandwidth, input bias current, input offset voltage, supply current, and output current. The package, mounting type, and operating temperature range are identical. The MAX4414ESA+ is classified as Active product status, ensuring ongoing availability and supply chain support. The primary distinction is RoHS3 compliance, making this part suitable for applications with environmental regulatory requirements. This part is the preferred direct replacement for the obsolete MAX4414ESA.

THS4221D (Alternative Manufacturer Solution)

The THS4221D, manufactured by Texas Instruments, provides an alternative voltage feedback amplifier in 8-SOIC packaging with rail-to-rail output. This part meets the core mechanical and functional compatibility criteria. Key differences include higher slew rate (990V/µs versus 200V/µs), lower -3dB bandwidth (230 MHz versus 400 MHz), lower input bias current (0.9 µA versus 1.3 µA), higher input offset voltage (3 mV versus 500 µV), higher supply current (14 mA versus 1.6 mA), higher output current capability (100 mA versus 75 mA), and extended maximum supply voltage (15V versus 5.5V). The THS4221D is Active product status with ROHS3 compliance. Selection of this part requires circuit-level analysis to confirm compatibility with the application's bandwidth, offset voltage, and power consumption requirements.

Frequently Asked Questions (FAQ)

Q: Can MAX4414ESA+ be used as a direct drop-in replacement for MAX4414ESA?

A: Yes. The MAX4414ESA+ maintains identical electrical specifications and package configuration. Pin-for-pin compatibility is confirmed across all parameters. The primary advantage is Active product status and RoHS3 compliance.

Q: What are the key differences between MAX4414ESA and THS4221D?

A: The THS4221D exhibits higher slew rate (990V/µs), lower bandwidth (230 MHz), lower input bias current (0.9 µA), higher input offset voltage (3 mV), higher supply current consumption (14 mA), and extended supply voltage range (up to 15V). These differences require application-specific evaluation before substitution.

Q: Is the THS4221D suitable for high-frequency applications requiring 400 MHz bandwidth?

A: No. The THS4221D -3dB bandwidth is 230 MHz, which is lower than the MAX4414ESA specification of 400 MHz. Applications requiring 400 MHz bandwidth performance should use MAX4414ESA+ instead.

Q: Are all substitute parts available in the same 8-SOIC package?

A: Yes. MAX4414ESA+, THS4221D, and the original MAX4414ESA are all packaged in 8-SOIC (0.154", 3.90mm Width) surface mount configuration. PCB layout modifications are not required for mechanical compatibility.

Q: What is the impact of higher supply current in THS4221D?

A: The THS4221D requires 14 mA supply current compared to 1.6 mA for MAX4414ESA. This represents an 8.75x increase in power consumption. Power supply design and thermal management must be re-evaluated if THS4221D is selected.

Q: Does input offset voltage difference affect circuit performance?

A: The THS4221D input offset voltage is 3 mV compared to 500 µV for MAX4414ESA. This 6x difference may impact precision analog circuits requiring low offset specifications. Application-specific offset calibration or trimming may be necessary.

Q: Are all substitute parts RoHS compliant?

A: MAX4414ESA+ and THS4221D are both ROHS3 compliant. The original MAX4414ESA is RoHS non-compliant. For applications with environmental regulatory requirements, use MAX4414ESA+ or THS4221D.

Q: What is the operating temperature range for all parts?

A: All three parts operate across -40°C to 85°C. Temperature range compatibility is confirmed for direct substitution.