LMC6035IMMX Equivalent & Substitute Parts

Part Overview

The LMC6035IMMX is a CMOS differential amplifier integrated circuit manufactured by Texas Instruments, housed in an 8-VSSOP surface mount package. This device features two independent circuits with rail-to-rail output capability and is designed for low-power analog signal processing applications. The LMC6035IMMX carries an obsolete product status, necessitating identification of equivalent and substitute components for ongoing design support and procurement continuity. Active alternatives with compatible electrical and mechanical characteristics are available from both Texas Instruments and Analog Devices Inc.

Key Parameters

Parameter	Value	Unit
Amplifier Type	CMOS	—
Number of Circuits	2	—
Output Type	Differential, Rail-to-Rail	—
Slew Rate	1.5	V/µs
Gain Bandwidth Product	1.4	MHz
Current - Input Bias	0.02	pA
Voltage - Input Offset	500	µV
Current - Supply (x2 Channels)	650	µA
Current - Output / Channel	8	mA
Voltage - Supply Span (Min)	2	V
Voltage - Supply Span (Max)	15.5	V
Operating Temperature Range	-40 to 85	°C
Mounting Type	Surface Mount	—
Package / Case	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	—
Supplier Device Package	8-VSSOP	—
RoHS Status	RoHS non-compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the LMC6035IMMX is determined by compatibility across the following critical parameters: amplifier type (CMOS), number of circuits (2), output configuration (rail-to-rail), package form factor (8-pin surface mount with 3.00mm width), and operating temperature range. The substitute parts are grouped into two categories based on functional equivalence and product status:

Category 1: Direct Equivalent (Same Base Product) LMC6035IMMX/NOPB represents the active production variant of the LMC6035 base product. This substitute maintains identical electrical specifications and package compatibility while offering RoHS3 compliance and active product status.

Category 2: Functional Alternatives (Different Manufacturers) AD8662ARMZ, AD8662ARMZ-REEL, AD8667ARMZ, and AD8667ARMZ-REEL are Analog Devices Inc. alternatives that provide rail-to-rail CMOS amplification in compatible 8-MSOP packages. These parts satisfy the core functional requirements of dual-circuit amplification with surface mount compatibility, though with differing electrical performance characteristics and enhanced compliance certifications.

Parameter Comparison

Parameter	LMC6035IMMX	LMC6035IMMX/NOPB	AD8662ARMZ	AD8662ARMZ-REEL	AD8667ARMZ	AD8667ARMZ-REEL
Manufacturer	Texas Instruments	Texas Instruments	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.
Amplifier Type	CMOS	CMOS	CMOS	CMOS	General Purpose	General Purpose
Number of Circuits	2	2	2	2	2	2
Output Type	Differential, Rail-to-Rail	Differential, Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail
Slew Rate (V/µs)	1.5	1.5	3.5	3.5	0.3	0.3
Gain Bandwidth Product (MHz)	1.4	1.4	4	4	0.54	0.54
Current - Input Bias (pA)	0.02	0.02	0.3	0.3	0.3	0.3
Voltage - Input Offset (µV)	500	500	50	50	40	40
Current - Supply (x2 Channels, µA)	650	650	1250	1250	230	230
Current - Output / Channel (mA)	8	8	140	140	50	50
Voltage - Supply Span Min (V)	2	2	5	5	5	5
Voltage - Supply Span Max (V)	15.5	15.5	16	16	16	16
Operating Temperature Range (°C)	-40 to 85	-40 to 85	-40 to 125	-40 to 125	-40 to 125	-40 to 125
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Product Status	Obsolete	Active	Active	Active	Active	Active
RoHS Status	RoHS non-compliant	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant
Packaging Type	Bulk	Tape & Reel (TR)	Tube	Cut Tape (CT) & Digi-Reel®	Tube	Cut Tape (CT) & Digi-Reel®

Engineering Selection Recommendations

LMC6035IMMX/NOPB is the primary substitute for the obsolete LMC6035IMMX. This part maintains complete electrical and mechanical compatibility while transitioning to active product status and RoHS3 compliance. The /NOPB designation indicates lead-free, halogen-free construction. Selection of this part eliminates obsolescence risk without requiring circuit redesign.

AD8662ARMZ and AD8662ARMZ-REEL provide enhanced performance characteristics including higher slew rate (3.5 V/µs versus 1.5 V/µs), increased gain bandwidth product (4 MHz versus 1.4 MHz), and significantly higher output current capability (140 mA versus 8 mA per channel). These parts are suitable for applications requiring faster signal processing or higher load driving capability. The extended operating temperature range (-40°C to 125°C) provides additional thermal margin. Both variants are RoHS3 compliant and carry active product status. Selection between ARMZ (tube packaging) and ARMZ-REEL (cut tape with Digi-Reel) depends on procurement and assembly requirements.

AD8667ARMZ and AD8667ARMZ-REEL offer lower power consumption (230 µA total supply current versus 650 µA) and reduced slew rate (0.3 V/µs), making these parts suitable for battery-powered or ultra-low-power applications where bandwidth requirements are modest. Input offset voltage is superior (40 µV versus 500 µV). These parts are RoHS3 compliant with active product status and extended operating temperature range. Selection between ARMZ (tube) and ARMZ-REEL (cut tape with Digi-Reel) depends on procurement methodology.

All substitute parts share identical package footprints (8-MSOP, 3.00mm width) and surface mount compatibility, enabling direct PCB layout reuse. Minimum supply voltage requirements differ: LMC6035 variants operate from 2 V minimum, while Analog Devices alternatives require 5 V minimum. Circuit designs operating below 5 V must retain the LMC6035IMMX/NOPB.

Frequently Asked Questions (FAQ)

Q: Can LMC6035IMMX/NOPB be used as a direct replacement for LMC6035IMMX?

A: Yes. LMC6035IMMX/NOPB is the active production equivalent of the obsolete LMC6035IMMX. All electrical parameters, package dimensions, and pin configurations are identical. The primary differences are product status (active versus obsolete) and RoHS compliance (RoHS3 compliant versus non-compliant). No circuit modifications are required.

Q: What are the key differences between the Texas Instruments LMC6035 variants and the Analog Devices AD8662/AD8667 alternatives?

A: The LMC6035 series operates from a 2 V minimum supply voltage, while AD8662 and AD8667 require 5 V minimum. The AD8662 provides higher performance (3.5 V/µs slew rate, 4 MHz bandwidth, 140 mA output current) suitable for demanding signal processing. The AD8667 prioritizes low power consumption (230 µA) for battery applications. Input offset voltage is significantly lower in both Analog Devices parts (40–50 µV versus 500 µV). Circuit redesign may be necessary if the application depends on 2–5 V supply operation or specific offset voltage characteristics.

Q: Are all substitute parts pin-compatible with the LMC6035IMMX?

A: All substitute parts use the 8-pin MSOP package with 3.00mm width and identical pin assignments for dual-channel amplifier configurations. PCB footprints are directly compatible. However, electrical parameter differences (supply voltage requirements, output current capability, bandwidth) may necessitate circuit validation before implementation.

Q: What packaging options are available for the substitute parts?

A: LMC6035IMMX/NOPB is supplied in Tape & Reel (TR) format. AD8662ARMZ and AD8667ARMZ are supplied in tube packaging. AD8662ARMZ-REEL and AD8667ARMZ-REEL are supplied in Cut Tape (CT) with Digi-Reel® format. Selection depends on assembly equipment compatibility and procurement volume requirements.

Q: Which substitute part should be selected for low-power battery applications?

A: AD8667ARMZ or AD8667ARMZ-REEL are optimized for low-power operation with 230 µA total supply current (versus 650 µA for LMC6035 variants). These parts are suitable for battery-powered designs where power consumption is critical. The reduced slew rate (0.3 V/µs) and lower bandwidth (540 kHz) are appropriate for low-frequency signal conditioning applications.

Q: Which substitute part should be selected for high-speed signal processing?

A: AD8662ARMZ or AD8662ARMZ-REEL provide the highest performance with 3.5 V/µs slew rate and 4 MHz gain bandwidth product. These parts are suitable for applications requiring faster transient response and higher frequency content. Output current capability (140 mA per channel) supports higher impedance loads compared to the original LMC6035 (8 mA per channel).

Q: Are all substitute parts RoHS3 compliant?

A: Yes. LMC6035IMMX/NOPB, AD8662ARMZ, AD8662ARMZ-REEL, AD8667ARMZ, and AD8667ARMZ-REEL are all RoHS3 compliant. The original LMC6035IMMX is RoHS non-compliant. Compliance with RoHS3 requirements is mandatory for most modern procurement specifications.

Q: What is the operating temperature range for each substitute part?

A: LMC6035IMMX and LMC6035IMMX/NOPB operate from -40°C to 85°C. AD8662ARMZ, AD8662ARMZ-REEL, AD8667ARMZ, and AD8667ARMZ-REEL operate from -40°C to 125°C. The extended temperature range of Analog Devices parts provides additional thermal margin for industrial and automotive applications.

Q: Can the AD8667 be used in applications originally designed for the LMC6035?

A: AD8667 can be used if the application does not require the full performance envelope of the LMC6035. The lower slew rate (0.3 V/µs versus 1.5 V/µs) and reduced bandwidth (540 kHz versus 1.4 MHz) limit high-frequency performance. However, superior input offset voltage (40 µV versus 500 µV) and lower power consumption make AD8667 suitable for precision DC and low-frequency analog signal conditioning. Circuit validation is required to confirm compatibility with specific application requirements.

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