LMC6061IM Equivalent & Substitute Parts

Part Overview

The LMC6061IM 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 precision amplification. The LMC6061IM is classified as obsolete, indicating discontinued production and limited availability. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support ongoing production requirements for applications currently utilizing this component.

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	0.035	V/µs
Gain Bandwidth Product	100	kHz
Current - Input Bias	0.01	pA
Voltage - Input Offset	100	µV
Current - Supply	24	µA
Current - Output / Channel	26	mA
RoHS Status	RoHS non-compliant	—

Substitute Part Grouping Explanation

Substitution of the LMC6061IM is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

Package compatibility: 8-SOIC (0.154", 3.90mm Width) surface-mount configuration
Amplifier classification: General-purpose operational amplifier
Circuit count: Single circuit per package
Output configuration: Rail-to-rail output capability
Supply voltage range: Minimum 4.5 V to maximum 15.5 V overlap required
Operating temperature range: Minimum -40°C to maximum 85°C overlap required
Mounting type: Surface mount

Substitute Parts Identified:

Group 1: Direct Texas Instruments Equivalent

LMC6061IM/NOPB: Identical electrical specifications with improved RoHS3 compliance and Last Time Buy status

Group 2: Analog Devices DigiTrim® Series (AD8661 Base)

AD8661ARZ, AD8661ARZ-REEL, AD8661ARZ-REEL7: Enhanced performance specifications with active product status

Group 3: Analog Devices DigiTrim® Series (AD8663 Base)

AD8663ARZ, AD8663ARZ-REEL, AD8663ARZ-REEL7: Alternative performance profile with active product status

All substitute parts maintain identical package geometry, mounting type, and functional classification. Electrical parameter variations exist and are documented in the Parameter Comparison table.

Parameter Comparison

Parameter	LMC6061IM	LMC6061IM/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	Last Time Buy	Active	Active	Active	Active	Active	Active
Package / Case	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC
Packaging Type	—	Tube	Tube	Tape & Reel (TR)	Cut Tape (CT) & Digi-Reel®	Tube	Tape & Reel (TR)	Cut Tape (CT) & Digi-Reel®
Slew Rate (V/µs)	0.035	0.035	3.5	3.5	3.5	0.3	0.3	0.3
Gain Bandwidth Product (kHz)	100	100	4000	4000	4000	540	540	540
Current - Input Bias (pA)	0.01	0.01	0.3	0.3	0.3	0.3	0.3	0.3
Voltage - Input Offset (µV)	100	100	50	50	50	40	40	40
Current - Supply (µA)	24	24	1250	1250	1250	230	230	230
Current - Output / Channel (mA)	26	26	140	140	140	50	50	50
Voltage - Supply Span (Min) (V)	4.5	4.5	5	5	5	5	5	5
Voltage - Supply Span (Max) (V)	15.5	15.5	16	16	16	16	16	16
Operating Temperature (°C)	-40 to 85	-40 to 85	-40 to 125	-40 to 125	-40 to 125	-40 to 125	-40 to 125	-40 to 125
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Inventory (Pcs)	1493	1266	1450	766	4620	3743	853	12800

Engineering Selection Recommendations

For Direct Replacement (Identical Electrical Performance):

LMC6061IM/NOPB is the direct equivalent manufactured by Texas Instruments. This part maintains identical electrical specifications including slew rate, gain bandwidth product, input bias current, input offset voltage, supply current, and output current. The primary advantage is ROHS3 compliance status compared to the original LMC6061IM. However, this part carries Last Time Buy status, indicating limited future availability. Selection of this part is appropriate for applications requiring exact electrical parameter matching and where supply continuity is not a primary concern.

For Active Product Status with Enhanced Performance:

The AD8661ARZ series (AD8661ARZ, AD8661ARZ-REEL, AD8661ARZ-REEL7) offers active product status with significantly enhanced electrical performance. These parts provide 100× improvement in slew rate (3.5 V/µs versus 0.035 V/µs), 40× improvement in gain bandwidth product (4 MHz versus 100 kHz), and 5.4× improvement in output current capability (140 mA versus 26 mA). Operating temperature range extends to 125°C. These specifications make AD8661ARZ series suitable for applications requiring higher bandwidth and faster transient response. All variants maintain ROHS3 compliance and 8-SOIC package compatibility.

For Balanced Performance with Extended Temperature Range:

The AD8663ARZ series (AD8663ARZ, AD8663ARZ-REEL, AD8663ARZ-REEL7) provides active product status with intermediate performance characteristics. Slew rate is 8.6× higher than LMC6061IM (0.3 V/µs), gain bandwidth product is 5.4× higher (540 kHz), and output current is 1.9× higher (50 mA). Input offset voltage is superior at 40 µV. Operating temperature extends to 125°C. This series represents a middle ground between the original LMC6061IM specifications and the higher-performance AD8661ARZ series.

Packaging Considerations:

All substitute parts are available in multiple packaging formats. Tube packaging is suitable for manual assembly and small-volume applications. Tape & Reel (TR) packaging supports standard pick-and-place equipment. Cut Tape (CT) & Digi-Reel® packaging provides flexibility for mixed-volume production. Selection should align with manufacturing process requirements and volume commitments.

Frequently Asked Questions (FAQ)

Q: Can AD8661ARZ or AD8663ARZ be used as direct drop-in replacements for LMC6061IM?

A: Yes, from a mechanical and functional perspective. All parts share identical 8-SOIC package geometry and surface-mount configuration. However, the electrical performance differs significantly. AD8661ARZ and AD8663ARZ exhibit higher slew rates, wider bandwidth, and extended operating temperature ranges. Applications sensitive to these parameter changes require circuit re-evaluation. Applications tolerant of improved performance specifications can use these parts without modification.

Q: What is the difference between AD8661ARZ-REEL, AD8661ARZ-REEL7, and AD8661ARZ?

A: These are identical electrical parts with different packaging formats. AD8661ARZ is supplied in Tube packaging. AD8661ARZ-REEL is supplied in Tape & Reel (TR) format. AD8661ARZ-REEL7 is supplied in Cut Tape (CT) & Digi-Reel® format. Selection depends on manufacturing equipment and volume requirements. Tube packaging is typical for low-volume or manual assembly. Tape & Reel and Cut Tape formats support automated assembly processes.

Q: Why does LMC6061IM/NOPB have Last Time Buy status?

A: Last Time Buy status indicates that Texas Instruments has discontinued production and set a final order deadline. This part will not be manufactured beyond a specified date. Existing inventory is available but will be depleted. For long-term supply security, migration to active products such as AD8661ARZ or AD8663ARZ series is recommended.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. LMC6061IM/NOPB, AD8661ARZ, AD8661ARZ-REEL, AD8661ARZ-REEL7, AD8663ARZ, AD8663ARZ-REEL, and AD8663ARZ-REEL7 are all ROHS3 compliant. The original LMC6061IM is RoHS non-compliant. For applications subject to RoHS requirements, use only compliant alternatives.

Q: What is the minimum supply voltage difference between LMC6061IM and Analog Devices substitutes?

A: LMC6061IM operates at minimum 4.5 V supply voltage. AD8661ARZ and AD8663ARZ series require minimum 5 V supply voltage. This 0.5 V difference may affect applications operating at the lower supply voltage boundary. Verify that circuit design accommodates the 5 V minimum requirement before substitution.

Q: Which substitute part offers the best inventory availability?

A: AD8663ARZ-REEL7 has the highest inventory level at 12,800 pieces. AD8663ARZ has 3,743 pieces. AD8661ARZ-REEL7 has 4,620 pieces. For applications requiring immediate large-volume supply, AD8663ARZ-REEL7 is the optimal choice.

Q: Can I use AD8661ARZ in a circuit designed for LMC6061IM without any modifications?

A: Mechanical and electrical compatibility exists for basic amplifier configurations. However, the significantly higher slew rate (3.5 V/µs versus 0.035 V/µs) and bandwidth (4 MHz versus 100 kHz) may introduce stability issues in circuits with high-impedance feedback networks or compensation designed for the original part's slower response. Circuit analysis and potential compensation adjustment are necessary.

Q: What is the difference in power consumption between LMC6061IM and AD8661ARZ?

A: LMC6061IM draws 24 µA supply current. AD8661ARZ draws 1.25 mA supply current. This represents approximately 52× higher power consumption. For battery-powered or ultra-low-power applications, this difference is significant and may disqualify AD8661ARZ as a substitute. AD8663ARZ at 230 µA represents a middle ground, approximately 9.6× higher than LMC6061IM.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message