LMC6036IMT Equivalent & Substitute Parts

Part Overview

The LMC6036IMT is a CMOS amplifier integrated circuit manufactured by Texas Instruments, featuring four differential, rail-to-rail output circuits in a 14-TSSOP surface mount package. This device is classified as obsolete, which necessitates identification of active equivalent and substitute parts for ongoing design requirements and production continuity. The LMC6036IMT operates across a wide supply voltage range of 2V to 15.5V and is suitable for applications requiring low input bias current and moderate bandwidth performance.

Key Parameters

Parameter	Value	Unit
Manufacturer Part Number	LMC6036IMT	—
Manufacturer	Texas Instruments	—
Category	Linear, Amplifiers	—
Amplifier Type	CMOS	—
Number of Circuits	4	—
Output Type	Differential, Rail-to-Rail	—
Package / Case	14-TSSOP (0.173", 4.40mm Width)	—
Mounting Type	Surface Mount	—
Operating Temperature Range	-40°C to 85°C	—
Voltage - Supply Span (Min)	2	V
Voltage - Supply Span (Max)	15.5	V
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 (x4 Channels)	1.3	mA
Current - Output / Channel	8	mA
Product Status	Obsolete	—
RoHS Status	RoHS non-compliant	—

Substitute Part Grouping Explanation

Substitution of the LMC6036IMT is determined by the following critical parameters:

Package Compatibility: All substitute parts must use the 14-TSSOP surface mount package (0.173", 4.40mm Width) to ensure mechanical and electrical compatibility with existing PCB layouts.

Circuit Configuration: The device must provide four amplifier circuits in a single package to maintain functional equivalence.

Output Characteristics: Rail-to-rail output capability is required for applications utilizing the full supply voltage range.

Supply Voltage Range: Substitute parts must support the minimum 2V supply requirement of the original design, though extended maximum voltage ratings are acceptable.

Operating Temperature: The original device operates from -40°C to 85°C. Substitute parts with extended temperature ranges (-40°C to 125°C) provide enhanced reliability without compromising compatibility.

Electrical Performance: Input bias current, input offset voltage, slew rate, and gain bandwidth product determine functional suitability for specific circuit applications. Substitute parts with improved specifications maintain backward compatibility while offering performance enhancements.

Compliance Status: Active product status and RoHS3 compliance are preferred for new designs and long-term availability assurance.

Parameter Comparison

Parameter	LMC6036IMT	AD8664ARUZ	AD8664ARUZ-REEL	AD8669ARUZ	AD8669ARUZ-REEL	MCP6H74-E/ST	TS914AIYDT
Manufacturer	Texas Instruments	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.	Microchip Technology	STMicroelectronics
Amplifier Type	CMOS	CMOS	CMOS	General Purpose	General Purpose	General Purpose	CMOS
Number of Circuits	4	4	4	4	4	4	4
Output Type	Differential, Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail
Package / Case	14-TSSOP	14-TSSOP	14-TSSOP	14-TSSOP	14-TSSOP	14-TSSOP	14-SOIC
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Operating Temperature Range	-40°C to 85°C	-40°C to 125°C	-40°C to 125°C	-40°C to 125°C	-40°C to 125°C	-40°C to 125°C	-40°C to 125°C
Voltage - Supply Span (Min)	2 V	5 V	5 V	5 V	5 V	3.5 V	2.7 V
Voltage - Supply Span (Max)	15.5 V	16 V	16 V	16 V	16 V	12 V	16 V
Slew Rate	1.5 V/µs	3.5 V/µs	3.5 V/µs	0.3 V/µs	0.3 V/µs	2 V/µs	1 V/µs
Gain Bandwidth Product	1.4 MHz	4 MHz	4 MHz	540 kHz	540 kHz	2.7 MHz	1.4 MHz
Current - Input Bias	0.02 pA	0.3 pA	0.3 pA	0.3 pA	0.3 pA	10 pA	1 pA
Voltage - Input Offset	500 µV	50 µV	50 µV	40 µV	40 µV	1 mV	5 mV
Current - Supply (x4 Channels)	1.3 mA	1.25 mA	1.25 mA	230 µA	230 µA	480 µA	230 µA
Current - Output / Channel	8 mA	140 mA	140 mA	50 mA	50 mA	53 mA	60 mA
Product Status	Obsolete	Active	Active	Active	Active	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Primary Substitutes (14-TSSOP Package):

The AD8664ARUZ and AD8664ARUZ-REEL represent the closest functional equivalents to the LMC6036IMT. Both devices maintain the 14-TSSOP package format, provide four CMOS amplifier circuits with rail-to-rail output, and support the extended supply voltage range up to 16V. These parts offer superior electrical performance with improved slew rate (3.5V/µs versus 1.5V/µs), higher gain bandwidth product (4 MHz versus 1.4 MHz), and significantly lower input offset voltage (50 µV versus 500 µV). Both AD8664 variants are active products with ROHS3 compliance, ensuring long-term availability and regulatory compliance. The AD8664ARUZ-REEL variant is supplied in cut tape and Digi-Reel packaging, suitable for automated assembly processes.

Secondary Substitutes (14-TSSOP Package):

The AD8669ARUZ and AD8669ARUZ-REEL devices provide four general-purpose amplifier circuits in the 14-TSSOP package with rail-to-rail output capability. These parts feature lower supply current consumption (230 µA versus 1.3 mA) and reduced slew rate (0.3V/µs), making them suitable for low-power applications where bandwidth requirements are less stringent. Input offset voltage is superior at 40 µV. Both variants are active products with ROHS3 compliance. The AD8669ARUZ-REEL variant is supplied in tape and reel packaging.

Alternative Substitute (14-TSSOP Package):

The MCP6H74-E/ST from Microchip Technology provides four general-purpose amplifier circuits in 14-TSSOP packaging with rail-to-rail output. This device operates across a supply range of 3.5V to 12V, which is narrower than the original LMC6036IMT but suitable for standard industrial applications. The MCP6H74-E/ST offers moderate slew rate (2V/µs) and gain bandwidth product (2.7 MHz), with higher input bias current (10 pA) compared to the original device. This part is active and ROHS3 compliant.

Package Variant Substitute (14-SOIC Package):

The TS914AIYDT from STMicroelectronics provides four CMOS amplifier circuits with rail-to-rail output in a 14-SOIC (0.154", 3.90mm Width) package. This device differs from the original LMC6036IMT in package format but maintains functional equivalence with matching gain bandwidth product (1.4 MHz) and similar slew rate characteristics (1 V/µs). The TS914AIYDT supports supply voltages from 2.7V to 16V, includes automotive qualification (AEC-Q100), and is ROHS3 compliant. PCB layout modification is required to accommodate the different package footprint.

Frequently Asked Questions (FAQ)

Q: Can the AD8664ARUZ directly replace the LMC6036IMT without circuit modifications?

A: The AD8664ARUZ is mechanically and electrically compatible with the LMC6036IMT in the 14-TSSOP package. Both devices provide four amplifier circuits with rail-to-rail output and support overlapping supply voltage ranges. The AD8664ARUZ offers superior electrical performance specifications. No circuit modifications are required for direct substitution, though circuit performance will improve due to enhanced specifications.

Q: What is the primary difference between AD8664ARUZ and AD8664ARUZ-REEL?

A: Both devices are electrically identical. The difference is in packaging format. The AD8664ARUZ is supplied in tube packaging, while the AD8664ARUZ-REEL is supplied in cut tape and Digi-Reel format. The reel variant is optimized for automated pick-and-place assembly processes, while the tube variant is suitable for manual assembly or lower-volume applications.

Q: Why does the MCP6H74-E/ST have a lower maximum supply voltage (12V) compared to the LMC6036IMT (15.5V)?

A: The MCP6H74-E/ST is designed for general-purpose applications with a maximum supply voltage of 12V. Applications requiring operation above 12V must use alternative substitutes such as the AD8664ARUZ or TS914AIYDT, which support supply voltages up to 16V. Verify the specific supply voltage requirements of your circuit before selecting a substitute part.

Q: Is the TS914AIYDT a suitable replacement if my PCB layout cannot accommodate package changes?

A: The TS914AIYDT uses a 14-SOIC package (0.154", 3.90mm Width) instead of the 14-TSSOP package (0.173", 4.40mm Width) of the LMC6036IMT. The footprints are not compatible without PCB redesign. If PCB layout modification is not feasible, select substitute parts that maintain the 14-TSSOP package format, such as the AD8664ARUZ, AD8669ARUZ, or MCP6H74-E/ST.

Q: What are the compliance advantages of using active substitute parts instead of the obsolete LMC6036IMT?

A: All recommended substitute parts are active products with ROHS3 compliance, ensuring regulatory compliance with current environmental standards. Active product status guarantees long-term availability, ongoing manufacturer support, and access to current manufacturing processes. Obsolete parts such as the LMC6036IMT face supply discontinuation and may not meet current regulatory requirements for new designs.

Q: How do the input offset voltage specifications affect circuit performance?

A: Input offset voltage determines the DC error at the amplifier output when no input signal is applied. The LMC6036IMT has an input offset voltage of 500 µV, while substitute parts such as the AD8664ARUZ (50 µV) and AD8669ARUZ (40 µV) offer significantly lower offset voltages. Lower offset voltage reduces DC error in precision applications such as instrumentation and sensor signal conditioning. Applications with less stringent accuracy requirements may tolerate higher offset voltages.

Q: Can I use the AD8669ARUZ in applications requiring high output current?

A: The AD8669ARUZ provides 50 mA output current per channel, compared to 8 mA for the LMC6036IMT. For applications requiring higher output current, the AD8664ARUZ (140 mA per channel) or MCP6H74-E/ST (53 mA per channel) are more suitable. Verify the specific output current requirements of your circuit before selecting a substitute part.

Q: What is the significance of the extended operating temperature range (-40°C to 125°C) in substitute parts?

A: The LMC6036IMT operates from -40°C to 85°C, while most substitute parts extend to 125°C. The extended temperature range provides enhanced reliability in industrial and automotive environments where ambient temperatures may exceed 85°C. Extended temperature operation does not affect compatibility with designs originally specified for the narrower temperature range of the LMC6036IMT.

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