LMC6041IMX Equivalent & Substitute Parts

Part Overview

The LMC6041IMX is a general-purpose operational amplifier manufactured by Texas Instruments, housed in an 8-SOIC surface-mount package. This device features rail-to-rail output capability and is designed for low-power applications requiring single-circuit amplification. The LMC6041IMX is classified as obsolete, which necessitates identification of equivalent and substitute components for ongoing design support and procurement continuity. Active alternatives from Analog Devices Inc. are available to fulfill equivalent functional requirements.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	1	—
Output Type	Rail-to-Rail	—
Package / Case	8-SOIC (0.154", 3.90mm Width)	—
Mounting Type	Surface Mount	—
Voltage - Supply Span (Min)	4.5	V
Voltage - Supply Span (Max)	15.5	V
Operating Temperature	-40 to 85	°C
Slew Rate	0.02	V/µs
Gain Bandwidth Product	75	kHz
Current - Supply	18	µA
Current - Output / Channel	40	mA
Voltage - Input Offset	1	mV
Current - Input Bias	0.002	pA

Substitute Part Grouping Explanation

Substitution of the LMC6041IMX is determined by strict adherence to the following electrical and mechanical parameters:

Mandatory Compatibility Parameters:

Package / Case: 8-SOIC (0.154", 3.90mm Width)
Mounting Type: Surface Mount
Amplifier Type: General Purpose
Number of Circuits: 1
Output Type: Rail-to-Rail
Voltage - Supply Span (Min): ≥ 4.5 V
Voltage - Supply Span (Max): ≤ 15.5 V

Substitute Categories:

Category 1: Direct Manufacturer Equivalent LMC6041IMX/NOPB is the tape-and-reel packaging variant of the same base product (LMC6041) from Texas Instruments. This part maintains identical electrical specifications and differs only in packaging format and product status (Active vs. Obsolete).

Category 2: Analog Devices DigiTrim® Series Substitutes The AD8661ARZ, AD8661ARZ-REEL, AD8661ARZ-REEL7, AD8663ARZ, AD8663ARZ-REEL, and AD8663ARZ-REEL7 are functionally equivalent alternatives from Analog Devices Inc. All parts satisfy the mandatory compatibility parameters. These devices are available in multiple packaging formats (Tube, Tape & Reel, Cut Tape & Digi-Reel®) and maintain active product status with RoHS3 compliance.

Parameter Comparison

Parameter	LMC6041IMX	LMC6041IMX/NOPB	AD8661ARZ	AD8661ARZ-REEL	AD8661ARZ-REEL7	AD8663ARZ	AD8663ARZ-REEL	AD8663ARZ-REEL7
Manufacturer	Texas Instruments	Texas Instruments	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active
Amplifier Type	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose
Number of Circuits	1	1	1	1	1	1	1	1
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
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)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Voltage - Supply Span (Min)	4.5 V	4.5 V	5 V	5 V	5 V	5 V	5 V	5 V
Voltage - Supply Span (Max)	15.5 V	15.5 V	16 V	16 V	16 V	16 V	16 V	16 V
Operating Temperature	-40 to 85 °C	-40 to 85 °C	-40 to 125 °C	-40 to 125 °C	-40 to 125 °C	-40 to 125 °C	-40 to 125 °C	-40 to 125 °C
Slew Rate	0.02 V/µs	0.02 V/µs	3.5 V/µs	3.5 V/µs	3.5 V/µs	0.3 V/µs	0.3 V/µs	0.3 V/µs
Gain Bandwidth Product	75 kHz	75 kHz	4 MHz	4 MHz	4 MHz	540 kHz	540 kHz	540 kHz
Current - Supply	18 µA	18 µA	1.25 mA	1.25 mA	1.25 mA	230 µA	230 µA	230 µA
Current - Output / Channel	40 mA	40 mA	140 mA	140 mA	140 mA	50 mA	50 mA	50 mA
Voltage - Input Offset	1 mV	1 mV	50 µV	50 µV	50 µV	40 µV	40 µV	40 µV
Current - Input Bias	0.002 pA	0.002 pA	0.3 pA	0.3 pA	0.3 pA	0.3 pA	0.3 pA	0.3 pA
RoHS Status	RoHS non-compliant	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant
Packaging Format	Tube	Tape & Reel (TR)	Tube	Tape & Reel (TR)	Cut Tape (CT) & Digi-Reel®	Tube	Tape & Reel (TR)	Cut Tape (CT) & Digi-Reel®

Engineering Selection Recommendations

Primary Recommendation: LMC6041IMX/NOPB

The LMC6041IMX/NOPB is the direct equivalent of the obsolete LMC6041IMX. This part maintains identical electrical specifications and mechanical compatibility while offering active product status and RoHS3 compliance. Selection of this part eliminates design modification requirements and preserves original circuit performance characteristics. The LMC6041IMX/NOPB is available in tape-and-reel packaging format, suitable for automated assembly processes.

Secondary Recommendations: Analog Devices DigiTrim® Series

The AD8661ARZ series and AD8663ARZ series represent functionally compatible alternatives when LMC6041IMX/NOPB availability is constrained. Both series maintain the mandatory 8-SOIC package, surface-mount configuration, and rail-to-rail output capability. All Analog Devices alternatives are active products with RoHS3 compliance and extended operating temperature range (-40 to 125°C).

Selection Criteria by Application:

Low-Power Applications: AD8663ARZ series (230 µA supply current) provides improved power efficiency compared to AD8661ARZ series (1.25 mA supply current).
High-Speed Applications: AD8661ARZ series (4 MHz gain bandwidth product) supports higher-frequency signal processing compared to AD8663ARZ series (540 kHz gain bandwidth product).
Packaging Requirements: Analog Devices offers multiple packaging formats (Tube, Tape & Reel, Cut Tape & Digi-Reel®) to accommodate different procurement and assembly workflows.

Frequently Asked Questions (FAQ)

Q1: Can the LMC6041IMX be directly replaced with LMC6041IMX/NOPB?

A: Yes. The LMC6041IMX/NOPB is the direct equivalent of the LMC6041IMX. Both parts share identical electrical specifications, mechanical dimensions, and pin configuration. The difference is packaging format (tape-and-reel vs. tube) and product status (active vs. obsolete). No circuit modification is required.

Q2: What are the key differences between AD8661ARZ and AD8663ARZ?

A: Both parts are compatible substitutes with identical package and mounting specifications. The AD8661ARZ features higher slew rate (3.5 V/µs vs. 0.3 V/µs) and higher gain bandwidth product (4 MHz vs. 540 kHz), making it suitable for higher-frequency applications. The AD8663ARZ features lower supply current (230 µA vs. 1.25 mA), making it suitable for power-constrained applications. Both maintain rail-to-rail output and 8-SOIC packaging.

Q3: Are the Analog Devices substitutes pin-compatible with the LMC6041IMX?

A: Yes. All substitute parts listed maintain the 8-SOIC package with identical pin count and configuration. Physical and electrical pin compatibility is preserved across all alternatives.

Q4: What is the significance of the different Analog Devices packaging variants (REEL, REEL7)?

A: The packaging variants indicate different tape-and-reel formats. AD8661ARZ-REEL and AD8663ARZ-REEL use standard tape-and-reel packaging. AD8661ARZ-REEL7 and AD8663ARZ-REEL7 use Cut Tape and Digi-Reel® format. All variants contain identical die and electrical specifications; selection depends on assembly equipment compatibility and procurement workflow.

Q5: Does substitution with Analog Devices parts require circuit redesign?

A: No circuit redesign is required for basic substitution. However, the Analog Devices alternatives exhibit different electrical performance characteristics (higher slew rate, lower input offset voltage, higher output current capability). Applications sensitive to these parameters should evaluate performance impact through simulation or prototype testing.

Q6: Are all substitute parts RoHS3 compliant?

A: Yes. LMC6041IMX/NOPB and all Analog Devices alternatives (AD8661ARZ series and AD8663ARZ series) are RoHS3 compliant. The original LMC6041IMX is RoHS non-compliant. Compliance status should be verified against specific procurement requirements.

Q7: What is the operating temperature range difference between LMC6041IMX and the substitutes?

A: The LMC6041IMX operates from -40 to 85°C. The LMC6041IMX/NOPB maintains this range. All Analog Devices alternatives (AD8661ARZ and AD8663ARZ series) extend the upper limit to 125°C, providing broader temperature coverage for industrial and automotive applications.

Q8: Can multiple substitute parts be used interchangeably in the same design?

A: LMC6041IMX and LMC6041IMX/NOPB are fully interchangeable. Analog Devices parts (AD8661ARZ and AD8663ARZ series) are functionally compatible but exhibit different electrical performance. Interchangeability within a single design depends on application tolerance to differences in slew rate, gain bandwidth product, and supply current. Mixed usage is not recommended without performance validation.

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