LMC6044AIM Equivalent & Substitute Parts

Part Overview

The LMC6044AIM is a CMOS quad operational amplifier manufactured by Texas Instruments, featuring push-pull, rail-to-rail output configuration in a 14-SOIC surface mount package. This device is classified as obsolete product status. Due to its obsolete classification, identifying equivalent and substitute parts is necessary for design continuity, procurement alternatives, and long-term system reliability. Substitute parts must maintain electrical compatibility across critical parameters including supply voltage range, output drive capability, and thermal operating range.

Substiute Parts

LMC6044AIM

Texas InstrumentsIn Stock: 1286LMC6044AIM Datasheet

Current PartRFQ

LMC6044AIM/NOPB

Texas InstrumentsIn Stock: 10423LMC6044AIM/NOPB Datasheet

DirectRFQ

LMC6044AIMX/NOPB

Texas InstrumentsIn Stock: 1147LMC6044AIMX/NOPB Datasheet

MFR RecommendedRFQ

AD8668ARZ

Analog Devices Inc.In Stock: 2283AD8668ARZ Datasheet

MFR RecommendedRFQ

AD8668ARZ-REEL

Analog Devices Inc.In Stock: 1965AD8668ARZ-REEL Datasheet

MFR RecommendedRFQ

AD8668ARZ-REEL7

Analog Devices Inc.In Stock: 61078AD8668ARZ-REEL7 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LMC6044AIM are grouped based on strict electrical and mechanical compatibility criteria. The primary substitution logic is determined by the following parameters:

Critical Compatibility Parameters:

• Package type: 14-SOIC surface mount form factor
• Number of circuits: 4 independent amplifier channels
• Output configuration: Rail-to-rail capability
• Supply voltage range: Minimum 4.5 V to maximum 15.5 V overlap required
• Output drive current: Minimum 40 mA per channel
• Operating temperature range: -40°C to 85°C minimum coverage

Substitution Categories:

Category 1: Direct Texas Instruments LMC6044 Variants Parts LMC6044AIM/NOPB and LMC6044AIMX/NOPB are direct variants of the base LMC6044 product. These maintain identical electrical specifications and differ only in packaging configuration (tube versus tape & reel) and product status (Last Time Buy versus Active). These parts are electrically interchangeable with the LMC6044AIM.

Category 2: Analog Devices AD8668 Series The AD8668ARZ, AD8668ARZ-REEL, and AD8668ARZ-REEL7 are general-purpose quad operational amplifiers in 14-SOIC packaging. While these parts share the same package and quad-channel configuration, they exhibit different electrical characteristics. The AD8668 series provides higher slew rate (3.5 V/µs versus 0.02 V/µs), higher gain bandwidth product (4 MHz versus 100 kHz), and higher output current capability (140 mA versus 40 mA). Supply voltage range is 5 V to 16 V, which overlaps with the LMC6044AIM range. Operating temperature extends to 125°C, exceeding the LMC6044AIM specification.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Electrical and Mechanical Equivalence):

LMC6044AIMX/NOPB is the recommended direct substitute. This part maintains identical electrical specifications to the LMC6044AIM while offering Active product status, ensuring long-term availability and supply chain stability. The tape & reel packaging is suitable for automated assembly processes. This part is ROHS3 compliant and carries unlimited moisture sensitivity rating.

For Enhanced Performance Applications:

The AD8668ARZ-REEL7 series provides superior electrical performance characteristics while maintaining 14-SOIC package compatibility and rail-to-rail output configuration. This part offers 40× higher slew rate, 40× higher gain bandwidth product, and 3.5× higher output current capability compared to the LMC6044AIM. The extended operating temperature range to 125°C provides additional thermal margin. Supply voltage range (5 V to 16 V) overlaps with the LMC6044AIM specification. AD8668ARZ-REEL7 is Active status with ROHS3 compliance and unlimited moisture sensitivity rating. Inventory availability is significantly higher (61,000 units).

Compliance Considerations:

All substitute parts listed maintain ROHS3 compliance and unlimited moisture sensitivity level (MSL 1), matching the original LMC6044AIM specifications. REACH status is unaffected for all parts. ECCN classification remains EAR99 across all alternatives.

Frequently Asked Questions (FAQ)

Q: Can LMC6044AIM/NOPB be used as a direct replacement for LMC6044AIM?

A: Yes. LMC6044AIM/NOPB is electrically identical to LMC6044AIM. The difference is packaging configuration: LMC6044AIM/NOPB uses tube packaging while LMC6044AIM uses standard packaging. Both maintain identical electrical specifications, supply voltage range (4.5 V to 15.5 V), output current (40 mA per channel), and operating temperature range (-40°C to 85°C). Product status is Last Time Buy, indicating limited future availability.

Q: What is the difference between LMC6044AIMX/NOPB and LMC6044AIM/NOPB?

A: Both parts are electrically identical. The primary difference is product status: LMC6044AIMX/NOPB is Active status, while LMC6044AIM/NOPB is Last Time Buy. LMC6044AIMX/NOPB uses tape & reel packaging, suitable for high-volume automated assembly. For new designs or long-term production, LMC6044AIMX/NOPB is the preferred choice due to Active status and higher inventory availability (1,085 units).

Q: Can AD8668ARZ series replace LMC6044AIM in all applications?

A: AD8668ARZ series shares the 14-SOIC package and quad-channel configuration with rail-to-rail output. However, electrical characteristics differ significantly. AD8668ARZ provides higher slew rate (3.5 V/µs versus 0.02 V/µs), higher gain bandwidth product (4 MHz versus 100 kHz), and higher output current (140 mA versus 40 mA). Supply voltage range is 5 V to 16 V, overlapping with LMC6044AIM (4.5 V to 15.5 V). Operating temperature extends to 125°C. These differences may affect circuit behavior in applications sensitive to slew rate, bandwidth, or supply voltage at 4.5 V. Circuit validation is required for applications with specific performance requirements.

Q: What is the inventory status of substitute parts?

A: LMC6044AIM (obsolete): 1,208 units. LMC6044AIM/NOPB (Last Time Buy): 10,400 units. LMC6044AIMX/NOPB (Active): 1,085 units. AD8668ARZ (Active): 2,200 units. AD8668ARZ-REEL (Active): 1,900 units. AD8668ARZ-REEL7 (Active): 61,000 units. For long-term procurement, AD8668ARZ-REEL7 offers the highest inventory availability.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. LMC6044AIM, LMC6044AIM/NOPB, LMC6044AIMX/NOPB, AD8668ARZ, AD8668ARZ-REEL, and AD8668ARZ-REEL7 are all ROHS3 compliant. All parts carry unlimited moisture sensitivity level (MSL 1) and REACH unaffected status.

Q: What packaging options are available for LMC6044 variants?

A: LMC6044AIM uses standard packaging. LMC6044AIM/NOPB uses tube packaging. LMC6044AIMX/NOPB uses tape & reel (TR) packaging. For automated assembly processes, tape & reel packaging (LMC6044AIMX/NOPB) is standard. All three variants maintain identical electrical specifications and 14-SOIC form factor.

Q: How do supply voltage ranges compare across substitute parts?

A: LMC6044AIM and variants: 4.5 V to 15.5 V. AD8668ARZ series: 5 V to 16 V. The overlap range is 5 V to 15.5 V. Applications operating at 4.5 V supply voltage cannot use AD8668ARZ series; LMC6044 variants are required. Applications operating at 5 V or higher can use either family.