LMC662CM/NOPB Equivalent & Substitute Parts

Part Overview

The LMC662CM/NOPB is a CMOS dual-channel operational amplifier manufactured by Texas Instruments, housed in an 8-SOIC surface mount package. 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 classified as Last Time Buy, indicating discontinued production status. Identification of equivalent and substitute components is necessary to ensure design continuity and procurement availability for applications currently utilizing this device.

Key Parameters

Parameter	Value	Unit
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 (x2 Channels)	750	µA
Current - Output / Channel	40	mA
Voltage - Supply Span (Min)	4.75	V
Voltage - Supply Span (Max)	15.5	V
Operating Temperature	0 to 70	°C
Package / Case	8-SOIC (0.154", 3.90mm Width)	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the LMC662CM/NOPB is determined by the following critical parameters: amplifier type (CMOS), number of circuits (2), output configuration (push-pull, rail-to-rail), package type (8-SOIC), and supply voltage range compatibility (4.75 V to 15.5 V minimum). Substitute parts must maintain electrical compatibility within these core specifications while accommodating variations in slew rate, gain bandwidth product, input bias current, and output current capacity.

The substitute parts are grouped into two categories:

Category 1: Direct Packaging Equivalent (Same Manufacturer) LMC662CMX/NOPB represents the active production equivalent from Texas Instruments, differing only in packaging format (Cut Tape & Digi-Reel® versus Tube).

Category 2: Functional Equivalents (Alternative Manufacturers) Parts from Analog Devices Inc. (AD8662ARZ, AD8662ARZ-REEL, AD8662ARZ-REEL7, AD8667ARZ, AD8667ARZ-REEL, AD8667ARZ-REEL7), Advanced Linear Devices Inc. (ALD2701BSAL, ALD2704SAL), and onsemi (MC33202DR2G) provide functional substitution with compatible 8-SOIC packaging and rail-to-rail output capability. These alternatives accommodate the supply voltage range and maintain dual-channel configuration while offering enhanced performance characteristics in specific parameters.

Parameter Comparison

Parameter	LMC662CM/NOPB	LMC662CMX/NOPB	AD8662ARZ	AD8662ARZ-REEL7	AD8667ARZ	AD8667ARZ-REEL7	ALD2701BSAL	ALD2704SAL	MC33202DR2G
Amplifier Type	CMOS	CMOS	CMOS	CMOS	General Purpose	General Purpose	CMOS	CMOS	General Purpose
Number of Circuits	2	2	2	2	2	2	2	2	2
Output Type	Push-Pull, Rail-to-Rail	Push-Pull, Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Push-Pull, Rail-to-Rail	Rail-to-Rail
Slew Rate (V/µs)	1.1	1.1	3.5	3.5	0.3	0.3	1	5	1
Gain Bandwidth Product (MHz)	1.4	1.4	4	4	0.54	0.54	1	2.1	2.2
Current - Input Bias (pA)	0.002	0.002	0.3	0.3	0.3	0.3	1	1	80 nA
Voltage - Input Offset (mV)	1	1	0.05	0.05	0.04	0.04	5	5	8
Current - Supply (µA, x2 Channels)	750	750	1250	1250	230	230	240	5000	900
Current - Output / Channel (mA)	40	40	140	140	50	50	1	15	80
Voltage - Supply Span Min (V)	4.75	4.75	5	5	5	5	2	6.5	1.8
Voltage - Supply Span Max (V)	15.5	15.5	16	16	16	16	10	10	12
Operating Temperature (°C)	0 to 70	0 to 70	-40 to 125	-40 to 125	-40 to 125	-40 to 125	0 to 70	0 to 70	-40 to 105
Package / Case	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1	1	1	1	1	1	1	1	1

Engineering Selection Recommendations

Primary Recommendation: LMC662CMX/NOPB

The LMC662CMX/NOPB is the manufacturer-recommended direct equivalent from Texas Instruments. This part maintains identical electrical specifications to the LMC662CM/NOPB while offering Active product status and higher inventory availability (18,400 units). The only difference is packaging format (Cut Tape & Digi-Reel® versus Tube). This substitution requires no circuit redesign and is suitable for all applications currently using the LMC662CM/NOPB.

Secondary Recommendations: Analog Devices AD8662 and AD8667 Series

The AD8662ARZ, AD8662ARZ-REEL, and AD8662ARZ-REEL7 provide enhanced performance with 3.5 V/µs slew rate and 4 MHz gain bandwidth product, compared to 1.1 V/µs and 1.4 MHz in the original part. These devices maintain compatible supply voltage range (5 V to 16 V) and dual-channel, rail-to-rail configuration. Operating temperature range extends to -40°C to 125°C. Output current capability increases to 140 mA per channel. These parts are suitable for applications requiring improved dynamic performance.

The AD8667ARZ, AD8667ARZ-REEL, and AD8667ARZ-REEL7 offer lower supply current (230 µA versus 750 µA) and reduced input offset voltage (40 µV versus 1 mV), with trade-offs in slew rate (0.3 V/µs) and gain bandwidth product (540 kHz). These parts are suitable for low-power applications with relaxed bandwidth requirements.

Alternative Recommendations: Advanced Linear Devices and onsemi

ALD2704SAL provides push-pull, rail-to-rail output matching the original part's output configuration, with enhanced slew rate (5 V/µs) and gain bandwidth product (2.1 MHz). Supply voltage range is restricted to 6.5 V to 10 V, requiring verification against application requirements.

MC33202DR2G from onsemi offers extended operating temperature range (-40°C to 105°C) and lower minimum supply voltage (1.8 V), with 2.2 MHz gain bandwidth product and 80 mA output current per channel. This part is suitable for applications requiring wider temperature operation.

All substitute parts maintain ROHS3 compliance, MSL Level 1 rating, and 8-SOIC package compatibility.

Frequently Asked Questions (FAQ)

Q1: Can I directly replace LMC662CM/NOPB with LMC662CMX/NOPB without circuit modification?

A: Yes. The LMC662CMX/NOPB is electrically identical to the LMC662CM/NOPB. The only difference is packaging format (Cut Tape & Digi-Reel® versus Tube). No circuit redesign is required. Pin configuration, electrical specifications, and performance characteristics are identical.

Q2: What are the key differences between the Analog Devices AD8662 and AD8667 series?

A: The AD8662 series provides higher slew rate (3.5 V/µs versus 0.3 V/µs) and higher gain bandwidth product (4 MHz versus 540 kHz), making it suitable for applications requiring faster signal processing. The AD8667 series offers lower supply current consumption (230 µA versus 1.25 mA) and lower input offset voltage (40 µV versus 50 µV), making it suitable for low-power and precision applications. Both maintain compatible supply voltage range and dual-channel, rail-to-rail configuration.

Q3: Are all substitute parts compatible with the 4.75 V to 15.5 V supply voltage range of the original LMC662CM/NOPB?

A: No. The Analog Devices parts (AD8662 and AD8667 series) operate from 5 V to 16 V, which overlaps but does not fully cover the original 4.75 V minimum. The ALD2701BSAL operates from 2 V to 10 V, and ALD2704SAL operates from 6.5 V to 10 V. The MC33202DR2G operates from 1.8 V to 12 V. Applications requiring operation below 5 V must verify compatibility with the specific substitute part selected.

Q4: What is the significance of the 8-SOIC package specification?

A: The 8-SOIC (Small Outline Integrated Circuit) package is a surface mount package with 0.154 inches (3.90 mm) width. All listed substitute parts use this identical package, ensuring mechanical and electrical compatibility with existing PCB layouts. No PCB redesign is required for package-compatible substitutions.

Q5: How does the Last Time Buy status of LMC662CM/NOPB affect substitution strategy?

A: Last Time Buy status indicates that Texas Instruments has discontinued production of this part. The LMC662CMX/NOPB is the active production equivalent and should be prioritized for new designs and long-term procurement. Existing inventory of LMC662CM/NOPB (1,994 units) is available but finite. For applications with extended production lifecycles, transition to LMC662CMX/NOPB or alternative manufacturers' parts is recommended.

Q6: What compliance certifications apply to all substitute parts?

A: All listed substitute parts maintain ROHS3 compliance, indicating compliance with the Restriction of Hazardous Substances Directive. All parts carry Moisture Sensitivity Level (MSL) 1 rating, indicating unlimited shelf life without moisture control requirements. All parts are classified under ECCN EAR99 and HTSUS 8542.33.0001. REACH status is Unaffected for all parts.

Q7: Which substitute part offers the best low-power performance?

A: The AD8667ARZ and AD8667ARZ-REEL7 offer the lowest supply current consumption at 230 µA (x2 channels), compared to 750 µA in the original LMC662CM/NOPB. This represents a 69% reduction in supply current. Trade-offs include lower slew rate (0.3 V/µs versus 1.1 V/µs) and lower gain bandwidth product (540 kHz versus 1.4 MHz).

Q8: Which substitute part offers the best high-speed performance?

A: The ALD2704SAL offers the highest slew rate at 5 V/µs and gain bandwidth product of 2.1 MHz, compared to 1.1 V/µs and 1.4 MHz in the original part. However, supply voltage range is restricted to 6.5 V to 10 V. The AD8662 series provides 3.5 V/µs slew rate and 4 MHz gain bandwidth product with broader supply voltage range (5 V to 16 V).

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