MAX4492AUD Equivalent & Substitute Parts

Part Overview

The MAX4492AUD is a general-purpose operational amplifier integrated circuit manufactured by Analog Devices Inc./Maxim Integrated. This device features four amplifier circuits in a 14-TSSOP surface-mount package with push-pull, rail-to-rail output configuration. The MAX4492AUD is classified as obsolete product status, necessitating identification of active equivalent and substitute components for new designs and ongoing production requirements. Substitute parts must maintain functional compatibility across key electrical parameters including supply voltage range, output drive capability, and operating temperature specifications.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	4	—
Output Type	Push-Pull, Rail-to-Rail	—
Slew Rate	10	V/µs
Gain Bandwidth Product	10	MHz
Current - Input Bias	50	pA
Voltage - Input Offset	1.5	mV
Current - Supply (x4 Channels)	800	µA
Current - Output / Channel	50	mA
Voltage - Supply Span (Min)	2.7	V
Voltage - Supply Span (Max)	5.5	V
Operating Temperature	-40 to 125	°C
Package / Case	14-TSSOP (0.173", 4.40mm Width)	—
Mounting Type	Surface Mount	—

Substitute Part Grouping Explanation

Substitution eligibility for the MAX4492AUD is determined by strict alignment with the following critical parameters:

Primary Compatibility Criteria:

Package type: 14-TSSOP surface-mount configuration
Circuit count: Four independent amplifier circuits
Output configuration: Rail-to-rail capability
Supply voltage range: Minimum 2.7 V to maximum 5.5 V overlap
Operating temperature range: -40°C to 125°C coverage
Output drive current: Minimum 50 mA per channel

Substitution Categories:

Category 1 - Direct Packaging Equivalent (MAX4492AUD+): Identical electrical specifications and package format with active product status and improved RoHS compliance.

Category 2 - Functional Equivalents with Parameter Variations (AD8608ARUZ, AD8608ARUZ-REEL, OPA4314AIPW, OPA4314AIPWR): CMOS amplifier designs maintaining 14-TSSOP package, four-circuit configuration, and rail-to-rail output. These parts operate within the required supply voltage range and temperature specifications but exhibit different slew rates, gain-bandwidth products, and supply current characteristics.

Category 3 - Limited Substitutes (AD8619WARUZ-RL, OPA4313IPW, OPA4313IPWR): Parts meeting package and circuit count requirements with rail-to-rail output but presenting reduced output current capability or narrower supply voltage ranges that require application-level verification.

Parameter Comparison

Parameter	MAX4492AUD	MAX4492AUD+	AD8608ARUZ	AD8608ARUZ-REEL	AD8619WARUZ-RL	OPA4313IPW	OPA4313IPWR	OPA4314AIPW	OPA4314AIPWR
Amplifier Type	General Purpose	General Purpose	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS
Number of Circuits	4	4	4	4	4	4	4	4	4
Output Type	Push-Pull, Rail-to-Rail	Push-Pull, 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 (V/µs)	10	10	5	5	0.1	0.5	0.5	1.5	1.5
Gain Bandwidth Product (MHz)	10	10	10	10	0.4	1	1	3	3
Current - Input Bias (pA)	50	50	1	1	0.2	0.2	0.2	1	1
Voltage - Input Offset (mV)	1.5	1.5	0.08	0.08	0.4	0.5	0.5	0.5	0.5
Current - Supply (µA)	800	800	1000	1000	38	50	50	150	150
Current - Output / Channel (mA)	50	50	80	80	80	15	15	20	20
Voltage - Supply Span Min (V)	2.7	2.7	2.7	2.7	1.8	1.8	1.8	1.8	1.8
Voltage - Supply Span Max (V)	5.5	5.5	5.5	5.5	5	5.5	5.5	5.5	5.5
Operating Temperature (°C)	-40 to 125	-40 to 125	-40 to 125	-40 to 125	-40 to 125	-40 to 125	-40 to 125	-40 to 125	-40 to 125
Package / Case	14-TSSOP	14-TSSOP	14-TSSOP	14-TSSOP	14-TSSOP	14-TSSOP	14-TSSOP	14-TSSOP	14-TSSOP
RoHS Status	Non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

MAX4492AUD+ (Direct Replacement): The MAX4492AUD+ represents the primary substitution path for the obsolete MAX4492AUD. This part maintains identical electrical specifications and 14-TSSOP packaging while offering active product status and ROHS3 compliance. Selection of MAX4492AUD+ eliminates design re-qualification requirements and preserves all performance characteristics of the original component.

AD8608ARUZ and AD8608ARUZ-REEL (Functional Equivalents): These Analog Devices CMOS amplifiers provide equivalent gain-bandwidth product (10 MHz) and supply voltage range compatibility. The AD8608 series exhibits reduced slew rate (5 V/µs versus 10 V/µs) and lower input bias current (1 pA versus 50 pA). Output current capability is enhanced to 80 mA per channel. These parts are suitable for applications where lower input bias current and higher output drive are beneficial. ROHS3 compliance and active product status support long-term availability.

OPA4314AIPW and OPA4314AIPWR (Moderate Performance Substitutes): Texas Instruments OPA4314 devices provide 3 MHz gain-bandwidth product with 1.5 V/µs slew rate. Supply voltage range extends to 1.8 V minimum, enabling operation in lower-voltage applications. Output current per channel is 20 mA. These parts maintain full temperature range coverage and ROHS3 compliance. Selection is appropriate for applications tolerating reduced bandwidth and slew rate specifications.

OPA4313IPW and OPA4313IPWR (Low-Power Alternatives): OPA4313 amplifiers operate at 50 µA total supply current with 1 MHz gain-bandwidth product and 0.5 V/µs slew rate. Output current is limited to 15 mA per channel. These parts are suitable for battery-powered or ultra-low-power applications where the reduced output drive capability is acceptable. Extended supply voltage range to 1.8 V minimum enables single-cell operation.

AD8619WARUZ-RL (Ultra-Low-Power Option): The AD8619 operates at 38 µA total supply current with 400 kHz gain-bandwidth product and 0.1 V/µs slew rate. This part is restricted to applications with minimal bandwidth requirements and is not recommended for general-purpose replacement of the MAX4492AUD due to significantly reduced dynamic performance specifications.

Frequently Asked Questions (FAQ)

Q: Can MAX4492AUD+ be used as a direct drop-in replacement for MAX4492AUD?

A: Yes. MAX4492AUD+ maintains identical electrical specifications, package configuration, and pin assignment. The primary difference is active product status and ROHS3 compliance. No circuit modifications are required.

Q: What are the key differences between MAX4492AUD and AD8608ARUZ?

A: Both devices provide 10 MHz gain-bandwidth product and compatible supply voltage ranges (2.7 V to 5.5 V). AD8608ARUZ exhibits lower input bias current (1 pA versus 50 pA), reduced slew rate (5 V/µs versus 10 V/µs), and higher output current capability (80 mA versus 50 mA per channel). Circuit topology differs (CMOS versus general-purpose design).

Q: Are OPA4313 and OPA4314 interchangeable with MAX4492AUD?

A: Both OPA4313 and OPA4314 maintain 14-TSSOP packaging and four-circuit configuration with rail-to-rail output. However, OPA4313 provides 1 MHz bandwidth and OPA4314 provides 3 MHz bandwidth, both significantly lower than MAX4492AUD's 10 MHz specification. Output current per channel is also reduced (15 mA and 20 mA respectively versus 50 mA). These parts are suitable only for applications tolerating reduced performance specifications.

Q: What is the significance of the packaging designation (Tube, Cut Tape & Digi-Reel, Tape & Reel)?

A: Packaging designation indicates the physical form in which components are supplied. Tube packaging is suitable for manual handling and small-quantity applications. Cut Tape & Digi-Reel format supports automated pick-and-place assembly. Tape & Reel format is optimized for high-volume production. Electrical specifications remain identical across packaging variants of the same part number.

Q: Why does AD8619WARUZ-RL have significantly lower gain-bandwidth product?

A: AD8619 is designed for ultra-low-power applications with 38 µA total supply current. The 400 kHz gain-bandwidth product and 0.1 V/µs slew rate reflect optimization for minimal power consumption rather than high-speed performance. This part is not recommended as a general-purpose replacement for MAX4492AUD.

Q: What does ROHS3 compliance indicate?

A: ROHS3 compliance certifies that the component meets Restriction of Hazardous Substances Directive requirements, restricting lead, cadmium, mercury, and other hazardous materials. All active substitute parts listed are ROHS3 compliant, whereas the obsolete MAX4492AUD is non-compliant. ROHS3 compliance is required for many commercial and industrial applications.

Q: Can I use OPA4313IPWR in a design originally specified for MAX4492AUD?

A: OPA4313IPWR is compatible from a package and pin perspective. However, the 1 MHz gain-bandwidth product and 0.5 V/µs slew rate are significantly lower than MAX4492AUD specifications. Application-level verification is required to confirm that reduced bandwidth and slew rate do not compromise circuit performance. Output current per channel (15 mA) may also be insufficient for high-load applications.

Q: What is the difference between AD8608ARUZ and AD8608ARUZ-REEL?

A: Both variants are identical in electrical specifications and package configuration. AD8608ARUZ is supplied in Tube packaging, while AD8608ARUZ-REEL is supplied in Cut Tape & Digi-Reel format. Selection depends on assembly process requirements and volume considerations.

Q: Is the MAX4492AUD still available for purchase?

A: MAX4492AUD is classified as obsolete product status. Inventory availability is limited to existing stock (12,125 pieces reported). MAX4492AUD+ is the recommended active alternative with identical specifications and improved compliance status.

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