LMC6044AIN/NOPB Equivalent & Substitute Parts

Part Overview

The LMC6044AIN/NOPB is a CMOS operational amplifier manufactured by Texas Instruments, featuring four independent circuits in a 14-PDIP package. This device is classified as obsolete, necessitating identification of active equivalent alternatives for new designs and production continuity. The LMC6044AIN/NOPB provides push-pull, rail-to-rail output configuration suitable for low-power CMOS amplifier applications requiring operation across extended supply voltage ranges.

Substiute Parts

LMC6044AIN/NOPB

Texas InstrumentsIn Stock: 987LMC6044AIN/NOPB Datasheet

Current PartRFQ

ICL7642BCPD+

Analog Devices Inc./Maxim IntegratedIn Stock: 1057ICL7642BCPD+ Datasheet

MFR RecommendedRFQ

ICL7642CCPD+

Analog Devices Inc./Maxim IntegratedIn Stock: 1353ICL7642CCPD+ Datasheet

MFR RecommendedRFQ

ICL7642ECPD+

Analog Devices Inc./Maxim IntegratedIn Stock: 5708ICL7642ECPD+ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LMC6044AIN/NOPB is determined by the following critical parameters: CMOS amplifier type, four independent circuits, 14-PDIP package configuration, through-hole mounting, and rail-to-rail output capability. All identified substitute parts maintain these core functional and mechanical specifications.

The ICL7642 series (ICL7642BCPD+, ICL7642CCPD+, ICL7642ECPD+) manufactured by Analog Devices Inc./Maxim Integrated satisfy the primary substitution criteria. These devices are functionally equivalent four-channel CMOS amplifiers in identical 14-PDIP packaging with through-hole mounting. All substitute parts are ROHS3 compliant and carry unlimited moisture sensitivity level (MSL 1).

Substitution compatibility is established through matching package type, circuit count, amplifier topology, and output configuration. Differences in electrical performance parameters (slew rate, gain bandwidth product, input bias current, input offset voltage, and supply current) represent performance enhancements in the substitute devices rather than functional incompatibilities.

Parameter Comparison

Engineering Selection Recommendations

ICL7642ECPD+ is the primary substitute for new designs and production applications. This device carries active product status, ensuring long-term availability and manufacturing support. The ICL7642ECPD+ maintains full functional compatibility with the LMC6044AIN/NOPB through identical package configuration, circuit count, and output topology. ROHS3 compliance and unlimited moisture sensitivity level align with the original part specifications.

ICL7642BCPD+ serves as an alternative active substitute with tighter input offset voltage specification (5 mV versus 20 mV on the ECPD+ variant). This device is suitable for applications requiring improved DC accuracy while maintaining active product status.

ICL7642CCPD+ is classified as obsolete and should not be selected for new designs despite functional equivalence. This part is appropriate only for legacy system maintenance where existing inventory exists.

All three ICL7642 variants demonstrate superior electrical performance characteristics compared to the LMC6044AIN/NOPB, including higher slew rate (1.6 V/µs versus 0.02 V/µs), increased gain bandwidth product (1.4 MHz versus 100 kHz), and reduced supply current (1 mA versus 52 µA across four channels). These enhancements provide design flexibility without introducing functional incompatibilities.

Operating temperature range differs between the original part (-40°C ~ 85°C) and substitute parts (0°C ~ 70°C). Applications requiring extended low-temperature operation below 0°C must evaluate this specification against system requirements.

Frequently Asked Questions (FAQ)

Q: Can ICL7642ECPD+ directly replace LMC6044AIN/NOPB in existing PCB designs?

A: Yes. Both devices utilize identical 14-DIP (0.300", 7.62mm) through-hole packaging with matching pinout configuration for four-channel CMOS amplifier circuits. No PCB modifications are required for mechanical or electrical interface compatibility.

Q: What are the key differences between ICL7642BCPD+, ICL7642CCPD+, and ICL7642ECPD+?

A: The three variants differ in input offset voltage specification and product status. ICL7642BCPD+ specifies 5 mV offset and carries active status. ICL7642CCPD+ specifies 10 mV offset and is obsolete. ICL7642ECPD+ specifies 20 mV offset and carries active status. All other electrical and mechanical parameters are identical across the three variants.

Q: Why is the operating temperature range narrower on substitute parts?

A: The ICL7642 series operates from 0°C ~ 70°C, compared to the LMC6044AIN/NOPB range of -40°C ~ 85°C. Applications requiring operation below 0°C or above 70°C must verify compatibility with system thermal requirements before substitution.

Q: Are all substitute parts RoHS compliant?

A: Yes. ICL7642BCPD+, ICL7642CCPD+, and ICL7642ECPD+ are all ROHS3 compliant with unlimited moisture sensitivity level (MSL 1), matching the compliance status of the original LMC6044AIN/NOPB.

Q: Which substitute part should be selected for new production designs?

A: ICL7642ECPD+ is recommended for new designs due to active product status, ensuring continued manufacturing availability and technical support. This device provides the best long-term supply chain stability.

Q: Do the substitute parts support the same supply voltage range?

A: The substitute ICL7642 series supports 2 V ~ 16 V supply operation, compared to the original part's 4.5 V ~ 15.5 V range. The substitute parts offer extended lower voltage capability, providing greater design flexibility for low-power applications.