LMC6064IMX Equivalent & Substitute Parts

Part Overview

The LMC6064IMX is a CMOS rail-to-rail operational amplifier containing four independent circuits in a 14-SOIC surface mount package, manufactured by Texas Instruments. This device is classified as obsolete, which necessitates identification of functionally equivalent alternatives for new designs and ongoing production requirements. The LMC6064IMX operates across a wide supply voltage range of 4.5V to 15.5V and is suitable for low-power, low-speed analog signal processing applications. Equivalent and substitute parts must maintain compatibility with the 14-SOIC package format and preserve the four-circuit configuration while meeting the electrical performance requirements of the original design.

Key Parameters

Parameter	Value	Unit
Amplifier Type	CMOS	—
Number of Circuits	4	—
Output Type	Rail-to-Rail	—
Package / Case	14-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 (x4 Channels)	80	µA
Current - Output / Channel	26	mA

Substitute Part Grouping Explanation

Substitution of the LMC6064IMX is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

Package format: 14-SOIC (0.154", 3.90mm Width)
Circuit configuration: Four independent amplifier circuits
Output topology: Rail-to-rail
Supply voltage range: Minimum 4.5V, maximum 15.5V
Mounting type: Surface mount

Substitution Logic:

Direct substitutes maintain identical electrical specifications and are pin-compatible replacements. These include the LMC6064AIMX/NOPB and LMC6064IMX/NOPB from Texas Instruments, which differ only in product status (active versus obsolete) and packaging format (tape & reel versus tube).

Manufacturer-recommended substitutes from Analog Devices Inc. (AD8664ARZ, AD8664ARZ-REEL7, AD8669ARZ, AD8669ARZ-REEL, AD8669ARZ-REEL7) are functionally equivalent alternatives that maintain the 14-SOIC package, four-circuit configuration, and rail-to-rail output topology. These parts operate within the required supply voltage range and preserve pin compatibility. However, these alternatives exhibit different electrical performance characteristics, including higher slew rates, increased gain bandwidth products, and improved input offset voltage specifications.

Parameter Comparison

Parameter	LMC6064IMX	LMC6064AIMX/NOPB	LMC6064IMX/NOPB	AD8664ARZ	AD8664ARZ-REEL7	AD8669ARZ	AD8669ARZ-REEL	AD8669ARZ-REEL7
Manufacturer	Texas Instruments	Texas Instruments	Texas Instruments	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	CMOS	CMOS	CMOS	CMOS	CMOS	General Purpose	General Purpose	General Purpose
Number of Circuits	4	4	4	4	4	4	4	4
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	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC
Voltage - Supply Span (Min)	4.5 V	4.5 V	4.5 V	5 V	5 V	5 V	5 V	5 V
Voltage - Supply Span (Max)	15.5 V	15.5 V	15.5 V	16 V	16 V	16 V	16 V	16 V
Operating Temperature	-40 to 85°C	-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
Slew Rate	0.035 V/µs	0.035 V/µs	0.035 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	100 kHz	100 kHz	100 kHz	4 MHz	4 MHz	540 kHz	540 kHz	540 kHz
Current - Input Bias	0.01 pA	0.01 pA	0.01 pA	0.3 pA	0.3 pA	0.3 pA	0.3 pA	0.3 pA
Voltage - Input Offset	100 µV	100 µV	100 µV	50 µV	50 µV	40 µV	40 µV	40 µV
Current - Supply (x4 Channels)	80 µA	80 µA	80 µA	1.25 mA	1.25 mA	230 µA	230 µA	230 µA
Current - Output / Channel	26 mA	26 mA	26 mA	140 mA	140 mA	50 mA	50 mA	50 mA
RoHS Status	Non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Packaging Format	Tube	Tape & Reel (TR)	Tape & Reel (TR)	Tube	Tape & Reel (TR)	Tube	Tape & Reel (TR)	Tape & Reel (TR)

Engineering Selection Recommendations

Direct Substitutes (Texas Instruments LMC6064 Series):

The LMC6064AIMX/NOPB and LMC6064IMX/NOPB are direct electrical equivalents of the obsolete LMC6064IMX. Both parts maintain identical electrical specifications and pin compatibility. The primary distinction is product status: both are active devices, ensuring long-term availability and supply chain continuity. The LMC6064IMX/NOPB offers higher inventory availability (3900 pcs) compared to the LMC6064AIMX/NOPB (1328 pcs). Both parts are ROHS3 compliant, addressing regulatory requirements that the original LMC6064IMX does not meet. For applications requiring no circuit redesign and identical electrical performance, these Texas Instruments alternatives are the preferred selection.

Manufacturer-Recommended Alternatives (Analog Devices Inc. AD8664 and AD8669 Series):

The AD8664ARZ and AD8664ARZ-REEL7 are manufacturer-recommended substitutes that provide enhanced performance characteristics. These parts maintain the 14-SOIC package and four-circuit configuration while offering significantly improved slew rate (3.5V/µs versus 0.035V/µs), higher gain bandwidth product (4 MHz versus 100 kHz), and superior input offset voltage (50 µV versus 100 µV). The AD8664 series exhibits higher supply current consumption (1.25 mA per channel versus 80 µA) and increased output current capability (140 mA per channel versus 26 mA). These characteristics make the AD8664 series suitable for applications requiring faster signal processing and higher output drive capability.

The AD8669ARZ, AD8669ARZ-REEL, and AD8669ARZ-REEL7 represent an intermediate performance option. These general-purpose amplifiers maintain the 14-SOIC package and four-circuit configuration while providing moderate performance improvements: slew rate of 0.3V/µs, gain bandwidth product of 540 kHz, and input offset voltage of 40 µV. Supply current consumption (230 µA per channel) and output current capability (50 mA per channel) fall between the LMC6064IMX and AD8664 specifications. The AD8669 series is suitable for applications requiring improved performance without the power consumption and output current demands of the AD8664 series.

All Analog Devices alternatives are ROHS3 compliant and support extended operating temperature range (-40°C to 125°C versus -40°C to 85°C), providing enhanced reliability for demanding environments.

Packaging Considerations:

Selection between tube and tape & reel packaging depends on production volume and assembly requirements. Tube packaging (LMC6064IMX, AD8664ARZ, AD8669ARZ) is suitable for lower-volume applications and manual assembly. Tape & reel packaging (LMC6064AIMX/NOPB, LMC6064IMX/NOPB, AD8664ARZ-REEL7, AD8669ARZ-REEL, AD8669ARZ-REEL7) is required for automated pick-and-place assembly and high-volume production.

Frequently Asked Questions (FAQ)

Q: Can the LMC6064IMX be directly replaced with the LMC6064AIMX/NOPB or LMC6064IMX/NOPB without circuit modification?

A: Yes. The LMC6064AIMX/NOPB and LMC6064IMX/NOPB are pin-for-pin compatible direct substitutes with identical electrical specifications. No circuit redesign is required. The primary differences are product status (active versus obsolete) and packaging format (tape & reel versus tube).

Q: What are the key differences between the Texas Instruments LMC6064 series and the Analog Devices AD8664 series?

A: The AD8664 series provides significantly enhanced performance: slew rate increases from 0.035V/µs to 3.5V/µs, gain bandwidth product increases from 100 kHz to 4 MHz, and input offset voltage improves from 100 µV to 50 µV. However, the AD8664 series exhibits higher supply current consumption (1.25 mA per channel versus 80 µA) and increased output current capability (140 mA per channel versus 26 mA). These differences make the AD8664 suitable for higher-speed applications but less suitable for ultra-low-power designs.

Q: When should the AD8669 series be selected instead of the AD8664 series?

A: The AD8669 series provides a performance and power consumption compromise. With slew rate of 0.3V/µs and gain bandwidth product of 540 kHz, the AD8669 offers improved performance over the LMC6064IMX while consuming less power (230 µA per channel) and requiring less output current (50 mA per channel) than the AD8664 series. Select the AD8669 series for applications requiring moderate performance improvements without the power consumption penalties of the AD8664 series.

Q: Are all substitute parts ROHS3 compliant?

A: All substitute parts listed (LMC6064AIMX/NOPB, LMC6064IMX/NOPB, AD8664ARZ, AD8664ARZ-REEL7, AD8669ARZ, AD8669ARZ-REEL, AD8669ARZ-REEL7) are ROHS3 compliant. The original LMC6064IMX is not ROHS3 compliant. Substitution with any of these alternatives addresses regulatory compliance requirements.

Q: What is the difference between tape & reel and tube packaging?

A: Tape & reel packaging is designed for automated pick-and-place assembly equipment and is standard for high-volume production. Tube packaging is suitable for manual assembly and lower-volume applications. Both packaging formats contain the same electronic component; the difference is in the physical delivery and handling format.

Q: Can the LMC6064IMX be used in applications requiring operation above 85°C?

A: The LMC6064IMX is rated for operation from -40°C to 85°C. For applications requiring extended temperature operation up to 125°C, the Analog Devices alternatives (AD8664ARZ, AD8664ARZ-REEL7, AD8669ARZ, AD8669ARZ-REEL, AD8669ARZ-REEL7) support the extended temperature range.

Q: What is the minimum supply voltage for each substitute part?

A: The LMC6064 series (LMC6064IMX, LMC6064AIMX/NOPB, LMC6064IMX/NOPB) supports minimum supply voltage of 4.5V. The Analog Devices alternatives (AD8664 and AD8669 series) require minimum supply voltage of 5V. Applications operating at 4.5V must use the Texas Instruments LMC6064 series.

Q: Are all substitute parts available in 14-SOIC package?

A: Yes. All substitute parts listed are available in 14-SOIC (0.154", 3.90mm Width) surface mount package, maintaining mechanical compatibility with the original LMC6064IMX.

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