LMC662CN/NOPB Equivalent & Substitute Parts

Part Overview

The LMC662CN/NOPB is a CMOS dual-channel operational amplifier manufactured by Texas Instruments, housed in an 8-pin DIP package for through-hole mounting. This device features push-pull, rail-to-rail output configuration with a slew rate of 1.1 V/µs and gain bandwidth product of 1.4 MHz. The part is designated as Last Time Buy, indicating discontinued production status. Identification of equivalent and substitute parts is necessary to ensure design continuity and procurement availability for applications currently utilizing this component.

Key Parameters

Parameter	Value
Amplifier Type	CMOS
Number of Circuits	2
Output Type	Push-Pull, Rail-to-Rail
Slew Rate	1.1 V/µs
Gain Bandwidth Product	1.4 MHz
Current - Input Bias	0.002 pA
Voltage - Input Offset	1 mV
Current - Supply	750 µA (x2 Channels)
Current - Output / Channel	40 mA
Voltage - Supply Span	4.75 V to 15.5 V
Operating Temperature	0°C to 70°C
Mounting Type	Through Hole
Package / Case	8-DIP (0.300", 7.62 mm)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the LMC662CN/NOPB is determined by electrical and mechanical compatibility across the following critical parameters:

Electrical Compatibility Criteria:

Amplifier Type: CMOS technology
Number of Circuits: Dual-channel configuration
Output Type: Rail-to-rail capability
Voltage Supply Range: Minimum 4.75 V to maximum 15.5 V overlap
Operating Temperature Range: 0°C to 70°C
Current Output Capability: Minimum 40 mA per channel

Mechanical Compatibility Criteria:

Package Type: 8-pin DIP configuration
Mounting Type: Through-hole technology
Physical Dimensions: 0.300" (7.62 mm) standard DIP spacing

Compliance Requirements:

RoHS3 Compliance
Moisture Sensitivity Level 1

Substitute parts are grouped into two categories: direct equivalents (identical package and mounting) and functional alternatives (different package form factors with identical electrical specifications).

Parameter Comparison

Parameter	LMC662CN/NOPB	LMC662CMX/NOPB	ALD2702APAL	TLC2202CP	TLC2272CP
Manufacturer	Texas Instruments	Texas Instruments	Advanced Linear Devices Inc.	Texas Instruments	Texas Instruments
Amplifier Type	CMOS	CMOS	CMOS	CMOS	CMOS
Number of Circuits	2	2	2	2	2
Output Type	Push-Pull, Rail-to-Rail	Push-Pull, Rail-to-Rail	Push-Pull, Rail-to-Rail	Rail-to-Rail	Rail-to-Rail
Slew Rate (V/µs)	1.1	1.1	2.8	2.7	3.6
Gain Bandwidth Product (MHz)	1.4	1.4	1.5	1.9	2.25
Current - Input Bias (pA)	0.002	0.002	1	4000	1
Voltage - Input Offset (mV)	1	1	5	2	0.3
Current - Supply (mA)	1.5	1.5	2	11.2	4.8
Current - Output / Channel (mA)	40	40	8	50	50
Voltage - Supply Span (V)	4.75 to 15.5	4.75 to 15.5	4 to 10	4.6 to 16	4.4 to 16
Operating Temperature (°C)	0 to 70	0 to 70	0 to 70	0 to 70	0 to 70
Mounting Type	Through Hole	Surface Mount	Through Hole	Through Hole	Through Hole
Package / Case	8-DIP	8-SOIC	8-DIP	8-DIP	8-DIP
Product Status	Last Time Buy	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Direct Package Equivalent (Recommended for Pin-Compatible Replacement):

LMC662CMX/NOPB is the active production equivalent of LMC662CN/NOPB. Both devices share identical electrical specifications including slew rate, gain bandwidth product, input bias current, and output current capability. The primary difference is packaging: LMC662CMX/NOPB uses 8-SOIC surface-mount configuration versus the through-hole 8-DIP of the original part. This substitute requires PCB redesign for surface-mount assembly. Product status is Active, ensuring long-term availability.

Through-Hole Package Alternatives (Direct Socket Replacement):

TLC2272CP and TLC2202CP maintain 8-DIP through-hole packaging compatible with existing PCB layouts. Both are manufactured by Texas Instruments with Active product status. TLC2272CP provides enhanced performance with 3.6 V/µs slew rate and 2.25 MHz gain bandwidth product, along with superior input offset voltage of 300 µV. TLC2202CP offers intermediate performance with 2.7 V/µs slew rate and 1.9 MHz gain bandwidth product. Both devices support the full supply voltage range of the original part and deliver 50 mA output current per channel, exceeding the 40 mA specification of LMC662CN/NOPB.

Alternative Manufacturer Option (Through-Hole):

ALD2702APAL from Advanced Linear Devices Inc. provides through-hole 8-DIP packaging with Active product status. This device exhibits higher slew rate (2.8 V/µs) and comparable gain bandwidth product (1.5 MHz). However, the supply voltage range is restricted to 4 V to 10 V, which does not fully overlap the 4.75 V to 15.5 V range of the original part. Output current per channel is limited to 8 mA, significantly below the 40 mA requirement. This substitute is suitable only for applications operating within the restricted voltage range and lower output current demands.

All substitute parts maintain ROHS3 compliance and Moisture Sensitivity Level 1 classification, ensuring compatibility with standard manufacturing and storage protocols.

Frequently Asked Questions (FAQ)

Q: Can LMC662CMX/NOPB be used as a direct replacement for LMC662CN/NOPB without circuit modification?

A: LMC662CMX/NOPB is electrically identical to LMC662CN/NOPB but uses 8-SOIC surface-mount packaging instead of 8-DIP through-hole packaging. Direct socket replacement is not possible. PCB redesign and reflow soldering assembly are required.

Q: Which substitute part provides the best performance improvement over LMC662CN/NOPB?

A: TLC2272CP offers the highest performance specifications with 3.6 V/µs slew rate (versus 1.1 V/µs), 2.25 MHz gain bandwidth product (versus 1.4 MHz), and 300 µV input offset voltage (versus 1 mV). It maintains through-hole 8-DIP packaging for direct PCB compatibility and is manufactured by Texas Instruments with Active product status.

Q: Is ALD2702APAL suitable for all applications currently using LMC662CN/NOPB?

A: ALD2702APAL is not universally compatible. The supply voltage range of 4 V to 10 V does not fully encompass the original part's 4.75 V to 15.5 V range. Output current per channel is limited to 8 mA, insufficient for applications requiring the original 40 mA specification. Compatibility assessment is required for each specific application.

Q: What are the key electrical differences between TLC2202CP and TLC2272CP?

A: TLC2272CP provides superior performance across multiple parameters: slew rate of 3.6 V/µs versus 2.7 V/µs, gain bandwidth product of 2.25 MHz versus 1.9 MHz, and input offset voltage of 300 µV versus 2 mV. Both devices support identical supply voltage ranges and deliver 50 mA output current per channel. TLC2272CP is the higher-performance option.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. LMC662CMX/NOPB, ALD2702APAL, TLC2202CP, and TLC2272CP are all ROHS3 compliant, matching the compliance status of LMC662CN/NOPB.

Q: What is the significance of the Last Time Buy status for LMC662CN/NOPB?

A: Last Time Buy designation indicates that Texas Instruments has discontinued production of LMC662CN/NOPB. Existing inventory will be depleted without replenishment. Designs currently using this part must transition to an active substitute to ensure long-term component availability and supply chain continuity.

Q: Can LMC662CN/NOPB and its substitutes be used interchangeably in the same circuit?

A: Electrical interchangeability depends on application-specific requirements. All substitutes maintain dual-channel CMOS amplifier architecture with rail-to-rail output and compatible operating temperature ranges. However, differences in slew rate, gain bandwidth product, input bias current, and output current capability may affect circuit performance. Circuit validation is required when substituting parts with different electrical specifications.

Q: Which substitute part is recommended for new designs?

A: For new designs, TLC2272CP is recommended. It offers the highest performance specifications, Active product status ensuring long-term availability, through-hole 8-DIP packaging for standard PCB assembly, and full compliance with RoHS3 and environmental standards. Texas Instruments manufacturing ensures consistent quality and technical support.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message