LMC6061IM/NOPB Equivalent & Substitute Parts

Part Overview

The LMC6061IM/NOPB 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 part is currently in Last Time Buy status, indicating discontinued production. Identifying equivalent and substitute parts is necessary to ensure design continuity and maintain supply chain reliability for ongoing production and maintenance applications.

Substiute Parts

LMC6061IM/NOPB

Texas InstrumentsIn Stock: 1365LMC6061IM/NOPB Datasheet

Current PartRFQ

LMC6061IMX/NOPB

Texas InstrumentsIn Stock: 4116LMC6061IMX/NOPB Datasheet

MFR RecommendedRFQ

AD8661ARZ

Analog Devices Inc.In Stock: 1526AD8661ARZ Datasheet

MFR RecommendedRFQ

AD8661ARZ-REEL

Analog Devices Inc.In Stock: 778AD8661ARZ-REEL Datasheet

MFR RecommendedRFQ

AD8661ARZ-REEL7

Analog Devices Inc.In Stock: 4688AD8661ARZ-REEL7 Datasheet

MFR RecommendedRFQ

AD8663ARZ

Analog Devices Inc.In Stock: 3835AD8663ARZ Datasheet

MFR RecommendedRFQ

AD8663ARZ-REEL

Analog Devices Inc.In Stock: 896AD8663ARZ-REEL Datasheet

MFR RecommendedRFQ

AD8663ARZ-REEL7

Analog Devices Inc.In Stock: 12889AD8663ARZ-REEL7 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LMC6061IM/NOPB is determined by the following critical parameters:

Mandatory Compatibility Criteria:

• 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: Minimum 4.5 V, Maximum 15.5 V (or compatible range)

Substitution Categories:

Category 1: Direct Functional Equivalent (Packaging Variant) LMC6061IMX/NOPB is the same base product (LMC6061) with identical electrical specifications but supplied in Tape & Reel (TR) packaging instead of Tube. All electrical parameters, temperature range, and performance characteristics are identical.

Category 2: Enhanced Performance Substitutes (Analog Devices AD8661 Series) AD8661ARZ, AD8661ARZ-REEL, and AD8661ARZ-REEL7 are higher-performance alternatives from Analog Devices. These parts maintain the 8-SOIC package and rail-to-rail output but feature significantly improved slew rate (3.5 V/µs vs. 0.035 V/µs), higher gain bandwidth product (4 MHz vs. 100 kHz), and extended operating temperature range (-40°C to 125°C). Supply voltage range is 5 V to 16 V, which overlaps the LMC6061IM/NOPB range.

Category 3: Moderate Performance Substitutes (Analog Devices AD8663 Series) AD8663ARZ, AD8663ARZ-REEL, and AD8663ARZ-REEL7 provide intermediate performance characteristics. These parts maintain the 8-SOIC package and rail-to-rail output with improved slew rate (0.3 V/µs vs. 0.035 V/µs) and gain bandwidth product (540 kHz vs. 100 kHz) compared to the LMC6061IM/NOPB. Operating temperature range extends to 125°C, and supply voltage range is 5 V to 16 V.

All substitute parts are ROHS3 compliant, MSL Level 1, and maintain surface-mount 8-SOIC packaging compatibility.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Identical Electrical Performance): Select LMC6061IMX/NOPB when the application requires identical electrical specifications to the LMC6061IM/NOPB. This part is the same base product with Active product status, ensuring long-term availability. The only difference is packaging format (Tape & Reel instead of Tube), which is suitable for automated assembly processes. This option is recommended for designs where the original performance characteristics are critical and no design modifications are acceptable.

For Enhanced Performance Applications: The AD8661ARZ series (AD8661ARZ, AD8661ARZ-REEL, AD8661ARZ-REEL7) provides significantly improved dynamic performance with 100× higher slew rate and 40× higher gain bandwidth product. These parts are suitable for applications requiring faster signal processing, higher frequency response, or improved transient response. All variants maintain Active product status and ROHS3 compliance. Select the appropriate packaging variant based on assembly requirements: Tube for manual handling, Tape & Reel for standard automated assembly, or Cut Tape & Digi-Reel for flexible quantity requirements.

For Moderate Performance Improvement with Lower Power Consumption: The AD8663ARZ series (AD8663ARZ, AD8663ARZ-REEL, AD8663ARZ-REEL7) offers a balanced alternative with improved slew rate (8.6× higher) and gain bandwidth product (5.4× higher) while maintaining significantly lower supply current (230 µA vs. 1250 µA for AD8661 series). This option is suitable for battery-powered or power-constrained applications requiring better performance than the LMC6061IM/NOPB without the power consumption penalty of the AD8661 series. All variants are Active and ROHS3 compliant.

Compliance and Regulatory Considerations: All substitute parts maintain ROHS3 compliance, MSL Level 1 rating, and REACH Unaffected status, ensuring compatibility with current environmental and regulatory requirements. The extended operating temperature range (-40°C to 125°C) of Analog Devices alternatives provides additional margin for high-temperature applications compared to the LMC6061IM/NOPB (-40°C to 85°C).

Frequently Asked Questions (FAQ)

Q: Can LMC6061IMX/NOPB be used as a direct drop-in replacement for LMC6061IM/NOPB? A: Yes. LMC6061IMX/NOPB is electrically identical to LMC6061IM/NOPB. The only difference is packaging format: LMC6061IM/NOPB is supplied in Tube packaging, while LMC6061IMX/NOPB is supplied in Tape & Reel format. Both use the same 8-SOIC package and have identical electrical specifications. The choice between them depends on assembly process requirements.

Q: What are the key differences between the LMC6061IM/NOPB and AD8661ARZ series? A: The AD8661ARZ series offers significantly higher performance: slew rate is 100 times faster (3.5 V/µs vs. 0.035 V/µs), gain bandwidth product is 40 times higher (4 MHz vs. 100 kHz), and input offset voltage is lower (50 µV vs. 100 µV). However, supply current is approximately 52 times higher (1.25 mA vs. 24 µA). Operating temperature range extends to 125°C. These parts are suitable for applications requiring faster response and higher frequency capability.

Q: What are the key differences between the LMC6061IM/NOPB and AD8663ARZ series? A: The AD8663ARZ series provides moderate performance improvement with slew rate 8.6 times faster (0.3 V/µs vs. 0.035 V/µs), gain bandwidth product 5.4 times higher (540 kHz vs. 100 kHz), and lower input offset voltage (40 µV vs. 100 µV). Supply current is approximately 9.6 times higher (230 µA vs. 24 µA), but significantly lower than the AD8661 series. Operating temperature range extends to 125°C. This option balances performance improvement with moderate power consumption increase.

Q: Are all substitute parts compatible with the same PCB layout and footprint? A: Yes. All substitute parts use the 8-SOIC package with identical pin configuration and footprint dimensions (0.154" width, 3.90mm). No PCB layout modifications are required for substitution. However, circuit design may require optimization based on the selected part's electrical characteristics, particularly regarding compensation networks for the higher bandwidth devices.

Q: What packaging options are available for each substitute part? A: Packaging options vary by part number. Tube packaging is suitable for manual component handling and small-quantity applications. Tape & Reel (TR) packaging is standard for automated pick-and-place assembly. Cut Tape (CT) & Digi-Reel® packaging provides flexibility for mixed-volume requirements. Select the packaging variant that matches your assembly process and volume requirements.

Q: Are all substitute parts RoHS compliant? A: Yes. All substitute parts listed—LMC6061IMX/NOPB, AD8661ARZ series, and AD8663ARZ series—are ROHS3 compliant with MSL Level 1 rating and REACH Unaffected status. They meet current environmental and regulatory requirements for electronic component manufacturing and use.

Q: What is the product status of each substitute part? A: LMC6061IM/NOPB is Last Time Buy (discontinued). LMC6061IMX/NOPB is Active and recommended for new designs requiring identical specifications. All Analog Devices alternatives (AD8661 and AD8663 series) are Active with full manufacturing support and long-term availability.

Q: Can I use AD8661ARZ and AD8663ARZ interchangeably? A: No. While both are Analog Devices general-purpose rail-to-rail amplifiers in 8-SOIC packages, they have different electrical specifications. AD8661ARZ has higher slew rate (3.5 V/µs) and gain bandwidth product (4 MHz) but higher supply current (1.25 mA). AD8663ARZ has moderate slew rate (0.3 V/µs) and gain bandwidth product (540 kHz) with lower supply current (230 µA). Selection depends on application requirements for speed, bandwidth, and power consumption.

Q: What is the difference between AD8661ARZ-REEL and AD8661ARZ-REEL7? A: Both are AD8661ARZ devices with identical electrical specifications. The difference is packaging format: AD8661ARZ-REEL is standard Tape & Reel format, while AD8661ARZ-REEL7 is Cut Tape & Digi-Reel® format. Digi-Reel® packaging allows for flexible quantity handling and is suitable for applications requiring mixed volumes or custom cut lengths.