LMC6034IMX CMOS Amplifier Equivalent & Substitute Parts

Part Overview

The LMC6034IMX is a CMOS amplifier integrated circuit containing four independent operational amplifier circuits in a 14-SOIC surface mount package. Manufactured by Texas Instruments under the LMC® series, this device is classified as obsolete product status. The LMC6034IMX operates across a wide supply voltage range of 4.75 V to 15.5 V with ultra-low input bias current of 0.04 pA, making it suitable for high-impedance signal conditioning applications. Due to its obsolete status and non-RoHS3 compliance, identification of active equivalent and substitute parts is necessary for new designs and ongoing production requirements.

Key Parameters

Parameter	Value	Unit
Amplifier Type	CMOS	—
Number of Circuits	4	—
Slew Rate	1.1	V/µs
Gain Bandwidth Product	1.4	MHz
Current - Input Bias	0.04	pA
Voltage - Input Offset	1	mV
Current - Supply (x4 Channels)	1.5	mA
Current - Output / Channel	40	mA
Voltage - Supply Span (Min)	4.75	V
Voltage - Supply Span (Max)	15.5	V
Operating Temperature Range	-40 to 85	°C
Package / Case	14-SOIC (0.154", 3.90mm Width)	—
Mounting Type	Surface Mount	—
RoHS Status	RoHS non-compliant	—

Substitute Part Grouping Explanation

Substitution of the LMC6034IMX is determined by the following critical parameters: amplifier type (CMOS), number of circuits (4), package type (14-SOIC), mounting method (surface mount), and electrical performance specifications including slew rate, gain bandwidth product, input bias current, and supply voltage range.

The substitute parts identified fall into two categories:

Category 1: Direct Form Factor Replacement LMC6034IMX/NOPB is the active production equivalent of the LMC6034IMX. This part maintains identical electrical specifications and package configuration while offering RoHS3 compliance and active product status.

Category 2: Functional Equivalents with Enhanced Performance The STMicroelectronics TS274 series (TS274ACDT, TS274AIDT, TS274CDT, TS274IDT) provides functional substitution with improved electrical characteristics. These parts maintain the four-circuit CMOS amplifier architecture and 14-SOIC package but offer higher slew rate (5.5 V/µs versus 1.1 V/µs), higher gain bandwidth product (3.5 MHz versus 1.4 MHz), and lower supply current (1 mA versus 1.5 mA). The TS274 series supports wider operating temperature ranges in certain variants and maintains RoHS3 compliance.

Substitution compatibility is confirmed when the substitute part meets or exceeds the electrical performance requirements of the original design while maintaining package and mounting compatibility.

Parameter Comparison

Parameter	LMC6034IMX	LMC6034IMX/NOPB	TS274ACDT	TS274AIDT	TS274CDT	TS274IDT
Manufacturer	Texas Instruments	Texas Instruments	STMicroelectronics	STMicroelectronics	STMicroelectronics	STMicroelectronics
Product Status	Obsolete	Active	Active	Active	Active	Active
Amplifier Type	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS
Number of Circuits	4	4	4	4	4	4
Slew Rate (V/µs)	1.1	1.1	5.5	5.5	5.5	5.5
Gain Bandwidth Product (MHz)	1.4	1.4	3.5	3.5	3.5	3.5
Current - Input Bias (pA)	0.04	0.04	1	1	1	1
Voltage - Input Offset (mV)	1	1	0.9	0.9	1.1	1.1
Current - Supply (mA)	1.5	1.5	1	1	1	1
Current - Output / Channel (mA)	40	40	45	45	45	45
Voltage - Supply Span Min (V)	4.75	4.75	3	3	3	3
Voltage - Supply Span Max (V)	15.5	15.5	16	16	16	16
Operating Temperature (°C)	-40 to 85	-40 to 85	0 to 70	-40 to 125	0 to 70	-40 to 125
Package / Case	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC	14-SOIC
RoHS Status	Non-compliant	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

For Direct Replacement (Obsolete to Active Transition): LMC6034IMX/NOPB is the recommended selection when maintaining exact electrical and thermal specifications is required. This part provides identical performance characteristics to the LMC6034IMX while offering active product status and RoHS3 compliance. The transition from LMC6034IMX to LMC6034IMX/NOPB requires no circuit redesign or validation.

For Enhanced Performance Applications: The STMicroelectronics TS274 series provides superior electrical performance with higher slew rate and gain bandwidth product. Selection within the TS274 series depends on operating temperature requirements:

TS274AIDT and TS274IDT support extended temperature range (-40°C to 125°C) and are suitable for industrial and automotive applications requiring wide temperature operation.

TS274ACDT and TS274CDT operate within 0°C to 70°C range and are appropriate for commercial and consumer applications with standard temperature requirements.

All TS274 variants maintain RoHS3 compliance and active product status. The TS274 series supports lower supply voltage operation (minimum 3 V versus 4.75 V), enabling use in battery-powered and low-voltage applications where the LMC6034IMX cannot operate.

Compliance Considerations: All substitute parts listed maintain RoHS3 compliance and REACH unaffected status. The transition from non-compliant LMC6034IMX to compliant alternatives aligns with current regulatory requirements for electronic component procurement.

Frequently Asked Questions (FAQ)

Q: Can LMC6034IMX/NOPB be used as a direct replacement for LMC6034IMX? A: Yes. LMC6034IMX/NOPB is the active production equivalent with identical electrical specifications, package configuration, and pin assignment. No circuit modifications are required.

Q: What are the key differences between LMC6034IMX and TS274 series substitutes? A: The TS274 series offers higher slew rate (5.5 V/µs versus 1.1 V/µs), higher gain bandwidth product (3.5 MHz versus 1.4 MHz), and lower supply current (1 mA versus 1.5 mA). The TS274 series also supports lower minimum supply voltage (3 V versus 4.75 V). Input bias current is higher in TS274 variants (1 pA versus 0.04 pA), which may affect high-impedance applications.

Q: Which TS274 variant should be selected for industrial temperature applications? A: TS274AIDT or TS274IDT are recommended for industrial applications requiring extended temperature operation from -40°C to 125°C. Both variants maintain identical electrical performance and RoHS3 compliance.

Q: Are all substitute parts available in the same package as LMC6034IMX? A: Yes. All substitute parts are available in 14-SOIC surface mount package with 0.154" (3.90mm) width, maintaining identical PCB footprint compatibility.

Q: What is the impact of higher input bias current in TS274 substitutes? A: The TS274 series input bias current of 1 pA is 25 times higher than the LMC6034IMX specification of 0.04 pA. For applications with source impedances exceeding 100 MΩ, this difference may introduce measurable input offset voltage errors. Verification is required for high-impedance signal conditioning circuits.

Q: Can TS274 parts be used in applications designed for 4.75 V minimum supply voltage? A: Yes. TS274 variants support supply voltage down to 3 V minimum, exceeding the LMC6034IMX requirement of 4.75 V. Designs operating at 4.75 V to 15.5 V are fully compatible with TS274 substitutes.

Q: What packaging options are available for substitute parts? A: LMC6034IMX/NOPB is available in Cut Tape (CT) and Digi-Reel® packaging. TS274ACDT and TS274CDT are available in Cut Tape (CT) and Digi-Reel® packaging. TS274AIDT is available in Cut Tape (CT) and Digi-Reel® packaging. TS274IDT is available in Tape & Reel (TR) packaging.

Q: Are all substitute parts RoHS3 compliant? A: Yes. LMC6034IMX/NOPB and all TS274 series variants (TS274ACDT, TS274AIDT, TS274CDT, TS274IDT) are RoHS3 compliant. The original LMC6034IMX is RoHS non-compliant.

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