MAX4471ESA Equivalent & Substitute Parts

Part Overview

The MAX4471ESA is a general-purpose operational amplifier manufactured by Analog Devices Inc./Maxim Integrated, configured as a dual-channel (2 circuit) rail-to-rail amplifier in an 8-SOIC surface mount package. This device is classified as obsolete, with 9,089 units currently in stock. Due to its obsolete status, equivalent and substitute parts from active product lines are necessary for new designs and long-term supply chain continuity. Substitute parts must maintain compatibility with the 8-SOIC package format and preserve the rail-to-rail output configuration while meeting the electrical requirements of the application.

Key Parameters

Parameter	Value
Manufacturer Part Number	MAX4471ESA
Manufacturer	Analog Devices Inc./Maxim Integrated
Category	Linear, Amplifiers
Amplifier Type	General Purpose
Number of Circuits	2
Output Type	Rail-to-Rail
Package / Case	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Voltage - Supply Span (Min)	1.8 V
Voltage - Supply Span (Max)	5.5 V
Operating Temperature	-40°C ~ 85°C
Product Status	Obsolete
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the MAX4471ESA is determined by the following critical parameters:

Package Compatibility: All substitute parts must use the 8-SOIC (0.154", 3.90mm Width) surface mount package to ensure direct PCB footprint compatibility.

Functional Configuration: Substitute parts must be dual-channel (2 circuit) operational amplifiers with rail-to-rail output capability to maintain circuit functionality.

Supply Voltage Range: The substitute must operate within or encompass the 1.8 V to 5.5 V supply voltage range of the original part. Parts with extended minimum supply voltage (2.7 V) remain compatible with applications using 2.7 V or higher.

Output Current: The substitute must provide sufficient output current per channel (minimum 30 mA) to drive typical load impedances.

Compliance Requirements: All substitute parts must maintain ROHS3 compliance and MSL 1 rating for manufacturing and storage compatibility.

Substitute parts are grouped into two categories:

Category 1 - Direct Packaging Equivalent: MAX4471ESA+ maintains identical electrical specifications and differs only in packaging format (Tube vs. original packaging).

Category 2 - Functional Substitutes: AD8542ARZ series and AD8602ARZ series provide enhanced electrical performance (higher slew rate, gain bandwidth product, and lower input bias current) while maintaining package compatibility and supply voltage overlap. These parts are from active product lines and offer improved specifications suitable for new designs.

Parameter Comparison

Parameter	MAX4471ESA	MAX4471ESA+	AD8542ARZ	AD8542ARZ-REEL	AD8542ARZ-REEL7	AD8602ARZ	AD8602ARZ-REEL	AD8602ARZ-REEL7	AD8602DRZ	AD8602DRZ-REEL	AD8602DRZ-REEL7
Amplifier Type	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS
Number of Circuits	2	2	2	2	2	2	2	2	2	2	2
Output Type	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail
Slew Rate	0.002 V/µs	0.002 V/µs	0.92 V/µs	0.92 V/µs	0.92 V/µs	6 V/µs	6 V/µs	6 V/µs	6 V/µs	6 V/µs	6 V/µs
Gain Bandwidth Product	9 kHz	9 kHz	1 MHz	1 MHz	1 MHz	8.4 MHz	8.4 MHz	8.4 MHz	8.4 MHz	8.4 MHz	8.4 MHz
Current - Input Bias	200 pA	200 pA	4 pA	4 pA	4 pA	0.2 pA	0.2 pA	0.2 pA	0.2 pA	0.2 pA	0.2 pA
Voltage - Input Offset	500 µV	500 µV	1 mV	1 mV	1 mV	80 µV	80 µV	80 µV	1.3 mV	1.3 mV	1.3 mV
Current - Supply (x2 Channels)	750 nA	750 nA	45 µA	45 µA	45 µA	750 µA	750 µA	750 µA	750 µA	750 µA	750 µA
Current - Output / Channel	36 mA	36 mA	30 mA	30 mA	30 mA	50 mA	50 mA	50 mA	50 mA	50 mA	50 mA
Voltage - Supply Span (Min)	1.8 V	1.8 V	2.7 V	2.7 V	2.7 V	2.7 V	2.7 V	2.7 V	2.7 V	2.7 V	2.7 V
Voltage - Supply Span (Max)	5.5 V	5.5 V	5.5 V	5.5 V	5.5 V	5.5 V	5.5 V	5.5 V	5.5 V	5.5 V	5.5 V
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C
Package / Case	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

For Direct Replacement (Existing Designs):

The MAX4471ESA+ is the direct equivalent, maintaining identical electrical specifications while offering active product status. This part is suitable for designs currently using MAX4471ESA where supply voltage remains at 1.8 V minimum and operating temperature does not exceed 85°C. The MAX4471ESA+ is available in Tube packaging with 13,550 units in stock.

For New Designs with Extended Temperature Range:

The AD8542ARZ, AD8542ARZ-REEL, and AD8542ARZ-REEL7 are recommended for applications requiring extended operating temperature range (-40°C to 125°C). These parts provide improved slew rate (0.92 V/µs vs. 0.002 V/µs) and gain bandwidth product (1 MHz vs. 9 kHz), with significantly lower input bias current (4 pA vs. 200 pA). The minimum supply voltage is 2.7 V, which is compatible with applications operating at 2.7 V or higher. These parts are available in multiple packaging formats with inventory ranging from 23,100 to 37,241 units.

For High-Speed Applications:

The AD8602ARZ, AD8602ARZ-REEL, AD8602ARZ-REEL7, AD8602DRZ, AD8602DRZ-REEL, and AD8602DRZ-REEL7 are suitable for applications requiring high slew rate (6 V/µs) and high gain bandwidth product (8.4 MHz). These CMOS amplifiers provide the lowest input bias current (0.2 pA) and extended operating temperature range (-40°C to 125°C). Output current capability is increased to 50 mA per channel. The AD8602ARZ variants feature 80 µV input offset voltage, while AD8602DRZ variants feature 1.3 mV input offset voltage. All variants are available with inventory ranging from 6,663 to 20,100 units.

Compliance Considerations:

All substitute parts maintain ROHS3 compliance and MSL 1 rating, ensuring compatibility with manufacturing processes and storage requirements equivalent to the original MAX4471ESA.

Frequently Asked Questions (FAQ)

Q: Can MAX4471ESA+ be used as a direct drop-in replacement for MAX4471ESA?

A: Yes. The MAX4471ESA+ maintains identical electrical specifications, package format (8-SOIC), and supply voltage range (1.8 V to 5.5 V). The only difference is packaging format (Tube). Direct PCB footprint compatibility is confirmed.

Q: What is the key difference between AD8542ARZ and AD8602ARZ series?

A: Both series maintain 8-SOIC package compatibility and rail-to-rail output. The AD8542ARZ is a general-purpose amplifier with 1 MHz gain bandwidth product and 0.92 V/µs slew rate. The AD8602ARZ is a CMOS amplifier with 8.4 MHz gain bandwidth product and 6 V/µs slew rate, suitable for higher-frequency applications. The AD8602ARZ also features lower input bias current (0.2 pA vs. 4 pA).

Q: Are there supply voltage compatibility issues when substituting with AD8542ARZ or AD8602ARZ?

A: The AD8542ARZ and AD8602ARZ series have a minimum supply voltage of 2.7 V, compared to 1.8 V for MAX4471ESA. Applications operating at 1.8 V to 2.6 V supply voltage must use MAX4471ESA or MAX4471ESA+. Applications operating at 2.7 V or higher can use AD8542ARZ or AD8602ARZ series without supply voltage constraints.

Q: What is the difference between AD8602ARZ and AD8602DRZ?

A: Both parts are CMOS amplifiers in 8-SOIC package with identical slew rate (6 V/µs) and gain bandwidth product (8.4 MHz). The primary difference is input offset voltage: AD8602ARZ features 80 µV, while AD8602DRZ features 1.3 mV. Selection depends on application offset voltage tolerance requirements.

Q: Do all substitute parts support the same operating temperature range as MAX4471ESA?

A: No. MAX4471ESA operates from -40°C to 85°C. All substitute parts (MAX4471ESA+, AD8542ARZ series, and AD8602ARZ/DRZ series) operate from -40°C to 125°C, providing extended high-temperature capability. Applications limited to 85°C maximum temperature can use any substitute without thermal constraints.

Q: Are packaging format differences (Tube, Cut Tape & Digi-Reel, Tape & Reel) electrically significant?

A: No. Packaging format differences (Tube, Cut Tape & Digi-Reel, Tape & Reel) are logistics and manufacturing considerations only. Electrical specifications and PCB footprint compatibility remain identical across all packaging variants of the same base part number.

Q: Which substitute part offers the lowest power consumption?

A: The MAX4471ESA and MAX4471ESA+ offer the lowest supply current at 750 nA per dual-channel configuration. The AD8542ARZ series draws 45 µA, and the AD8602ARZ/DRZ series draws 750 µA. For ultra-low-power applications, MAX4471ESA+ is the appropriate choice.

Q: Can AD8602ARZ-REEL and AD8602ARZ-REEL7 be used interchangeably?

A: Yes. Both parts are identical electrically and functionally. The difference is in packaging format: AD8602ARZ-REEL uses standard Tape & Reel packaging, while AD8602ARZ-REEL7 uses Cut Tape & Digi-Reel packaging. Selection depends on manufacturing equipment compatibility and supply chain requirements.

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