LMC6032IMX CMOS Dual Amplifier Equivalent & Substitute Parts

Part Overview

The LMC6032IMX is a CMOS dual-channel operational amplifier manufactured by Texas Instruments, housed in an 8-SOIC surface mount package. This device is classified as obsolete, though inventory remains available. The LMC6032IMX operates across a wide supply voltage range (4.75V to 15.5V) and is designed for low-power, low-noise applications requiring dual amplification circuits.

Due to its obsolete product status, identifying equivalent and substitute parts is essential for design continuity, long-term availability assurance, and supply chain reliability. Substitute parts must maintain functional compatibility through matching electrical characteristics and mechanical packaging standards.

Key Parameters

Parameter	Value	Unit
Amplifier Type	CMOS	—
Number of Circuits	2	—
Slew Rate	1.1	V/µs
Gain Bandwidth Product	1.4	MHz
Current - Input Bias	0.04	pA
Voltage - Input Offset	1	mV
Current - Supply (per Channel)	750	µA
Current - Output per Channel	40	mA
Voltage - Supply Span (Min)	4.75	V
Voltage - Supply Span (Max)	15.5	V
Operating Temperature Range	-40 to 85	°C
Package / Case	8-SOIC (0.154", 3.90mm Width)	—
Mounting Type	Surface Mount	—
Product Status	Obsolete	—

Substitute Part Grouping Explanation

Substitution logic for the LMC6032IMX is based on the following critical parameters that determine functional compatibility:

Primary Substitution Criteria:

Amplifier Type: CMOS topology
Number of Circuits: Dual-channel (2 circuits)
Package / Case: 8-SOIC surface mount form factor
Slew Rate: Minimum 1.1 V/µs
Gain Bandwidth Product: Minimum 1.4 MHz
Supply Voltage Range: Minimum 4.75V to 15.5V span
Operating Temperature: -40°C to 85°C minimum coverage
Input Bias Current: Ultra-low (picoampere range)
Input Offset Voltage: 1 mV maximum

Substitution Categories:

Category 1: Direct Equivalents (Identical Electrical Specifications) Parts maintaining all primary electrical parameters and CMOS topology with identical or superior performance metrics.

Category 2: Functional Alternatives (Modified Electrical Specifications) Parts with CMOS dual-channel architecture but differing slew rate, bandwidth, or supply current characteristics. These require application-level verification of performance adequacy.

Category 3: Cross-Technology Alternatives (Different Amplifier Type) Parts utilizing alternative amplifier topologies (Voltage Feedback, Audio) with dual-channel 8-SOIC packaging. These introduce different electrical behavior and require design review.

Parameter Comparison

Part Number	Manufacturer	Amplifier Type	Circuits	Slew Rate (V/µs)	GBW (MHz)	Input Bias (pA)	Supply Min (V)	Supply Max (V)	Temp Range (°C)	Package	Status
LMC6032IMX	Texas Instruments	CMOS	2	1.1	1.4	0.04	4.75	15.5	-40 to 85	8-SOIC	Obsolete
LMC6032IMX/NOPB	Texas Instruments	CMOS	2	1.1	1.4	0.04	4.75	15.5	-40 to 85	8-SOIC	Active
LMC662AIM/NOPB	National Semiconductor	CMOS	2	1.1	1.4	0.002	4.75	15.5	-40 to 85	8-SOIC	Active
BD7562F-E2	Rohm Semiconductor	CMOS	2	1.0	1.0	1	5	14.5	-40 to 85	8-SOP	Active
BD7562SF-E2	Rohm Semiconductor	CMOS	2	1.0	1.0	1	5	14.5	-40 to 105	8-SOP	Active
BD7542F-E2	Rohm Semiconductor	CMOS	2	0.3	0.6	1	5	14.5	-40 to 85	8-SOP	Active
AD8056ARZ	Analog Devices Inc.	Voltage Feedback	2	1400	300	400	8	12	-40 to 125	8-SOIC	Active
LM833DR2G	onsemi	Audio	2	7	15	300	10	36	-40 to 85	8-SOIC	Active

Engineering Selection Recommendations

Tier 1: Direct Replacement (Recommended)

LMC6032IMX/NOPB (Texas Instruments) is the primary recommended substitute. This part maintains identical electrical specifications to the obsolete LMC6032IMX while offering active product status and RoHS3 compliance. The /NOPB suffix indicates lead-free, halogen-free construction. Inventory availability is substantial (38,445 units), ensuring supply continuity. No design modifications are required for this substitution.

LMC662AIM/NOPB (National Semiconductor) provides an alternative direct equivalent with superior input bias current performance (0.002 pA versus 0.04 pA). This part maintains identical slew rate, gain bandwidth product, and supply voltage specifications. Active product status and RoHS compliance are confirmed. Lower inventory levels (1,653 units) may impact availability for high-volume applications.

Tier 2: Functional Alternatives (Application-Dependent)

BD7562F-E2 and BD7562SF-E2 (Rohm Semiconductor) are CMOS dual-channel amplifiers with reduced slew rate (1.0 V/µs versus 1.1 V/µs) and lower gain bandwidth product (1.0 MHz versus 1.4 MHz). These parts operate within the supply voltage range (5V to 14.5V) but do not extend to the full 4.75V minimum. The BD7562SF-E2 variant extends operating temperature to 105°C. These substitutes are suitable only for applications where the reduced bandwidth and slew rate do not impact performance requirements.

BD7542F-E2 (Rohm Semiconductor) exhibits significantly reduced performance (0.3 V/µs slew rate, 0.6 MHz bandwidth) and is not recommended as a substitute for the LMC6032IMX except in ultra-low-power, low-frequency applications.

Tier 3: Cross-Technology Alternatives (Design Review Required)

AD8056ARZ (Analog Devices Inc.) is a voltage feedback amplifier with substantially different electrical characteristics: 1400 V/µs slew rate, 300 MHz bandwidth, and 400 nA input bias current. Supply voltage range (8V to 12V) does not cover the full LMC6032IMX range. This part is suitable only for high-speed applications requiring significantly different performance profile and requires complete circuit redesign validation.

LM833DR2G (onsemi) is an audio amplifier with performance characteristics (7 V/µs slew rate, 15 MHz bandwidth) optimized for audio applications. Supply voltage range (10V to 36V) and input bias current (300 nA) differ substantially from the LMC6032IMX. This part is not recommended as a substitute for general-purpose CMOS amplifier applications.

Compliance and Certification:

All recommended substitutes (Tier 1 and Tier 2) maintain RoHS3 compliance and REACH unaffected status, matching the regulatory requirements of the original LMC6032IMX. Moisture sensitivity level (MSL 1) is consistent across all alternatives, indicating unlimited shelf life under standard storage conditions.

Frequently Asked Questions (FAQ)

Q1: Can I directly replace LMC6032IMX with LMC6032IMX/NOPB without any circuit modifications?

A: Yes. The LMC6032IMX/NOPB is electrically and mechanically identical to the obsolete LMC6032IMX. Both parts share identical electrical specifications, package dimensions (8-SOIC, 0.154" width), and pin configuration. The /NOPB designation indicates lead-free, halogen-free construction, which is a manufacturing process change without functional impact. No circuit modifications, PCB layout changes, or firmware updates are required.

Q2: What is the difference between LMC662AIM/NOPB and LMC6032IMX/NOPB?

A: Both parts are CMOS dual-channel amplifiers with identical slew rate (1.1 V/µs), gain bandwidth product (1.4 MHz), supply voltage range (4.75V to 15.5V), and operating temperature (-40°C to 85°C). The primary difference is input bias current: LMC662AIM/NOPB specifies 0.002 pA versus 0.04 pA for LMC6032IMX/NOPB. This superior performance in LMC662AIM/NOPB may benefit applications requiring extremely low input leakage current. Both parts are pin-compatible and require no design changes.

Q3: Why do the Rohm BD7562 parts have a different package designation (8-SOP) when the datasheet shows 8-SOIC dimensions?

A: The BD7562F-E2 and BD7562SF-E2 are specified as 8-SOP (Small Outline Package) with 0.173" width (4.40mm), compared to the LMC6032IMX 8-SOIC with 0.154" width (3.90mm). Although both are 8-pin surface mount packages, the physical dimensions differ. PCB footprint compatibility must be verified before substitution. The wider package may not fit existing PCB layouts designed for the narrower 8-SOIC form factor.

Q4: Can I use AD8056ARZ as a substitute for LMC6032IMX in my application?

A: AD8056ARZ is not recommended as a direct substitute. While both are dual-channel amplifiers in 8-SOIC packages, the AD8056ARZ is a voltage feedback amplifier with fundamentally different electrical characteristics: 1400 V/µs slew rate (versus 1.1 V/µs), 300 MHz bandwidth (versus 1.4 MHz), and 400 nA input bias current (versus 0.04 pA). Additionally, the supply voltage range (8V to 12V) does not cover the full 4.75V to 15.5V range of the LMC6032IMX. Substitution requires complete circuit redesign and performance validation.

Q5: What is the impact of using BD7562F-E2 instead of LMC6032IMX in a precision measurement circuit?

A: The BD7562F-E2 has reduced slew rate (1.0 V/µs versus 1.1 V/µs) and lower gain bandwidth product (1.0 MHz versus 1.4 MHz). For precision measurement circuits, these reductions may impact signal fidelity, frequency response, and settling time. Additionally, the minimum supply voltage is 5V (versus 4.75V for LMC6032IMX), which may be incompatible with low-voltage power supplies. Application-level testing is required to confirm performance adequacy before production substitution.

Q6: Are all substitute parts RoHS compliant?

A: Yes. All recommended substitute parts (LMC6032IMX/NOPB, LMC662AIM/NOPB, BD7562F-E2, BD7562SF-E2, BD7542F-E2, AD8056ARZ, and LM833DR2G) are RoHS3 compliant and REACH unaffected. This ensures regulatory compliance for applications subject to RoHS and REACH requirements. The original LMC6032IMX is RoHS non-compliant, making substitution necessary for new designs requiring RoHS certification.

Q7: Which substitute part has the best long-term availability?

A: LM833DR2G (onsemi) has the highest current inventory (45,855 units), followed by LMC6032IMX/NOPB (38,445 units). However, inventory levels do not guarantee long-term availability. For obsolete part replacement, LMC6032IMX/NOPB is the preferred choice because it maintains identical specifications and active product status from Texas Instruments, indicating manufacturer commitment to continued production and support.

Q8: Can I use LM833DR2G in a low-power application where supply current is critical?

A: No. The LM833DR2G is an audio amplifier with 4 mA supply current, which is significantly lower than the LMC6032IMX (750 µA per channel, or 1.5 mA total). However, the LM833DR2G has substantially different electrical characteristics (7 V/µs slew rate, 15 MHz bandwidth, 300 nA input bias current) optimized for audio applications. This part is not suitable for general-purpose CMOS amplifier applications and requires complete circuit redesign.

Q9: What is the temperature range difference between BD7562F-E2 and BD7562SF-E2?

A: BD7562F-E2 operates from -40°C to 85°C, while BD7562SF-E2 extends to -40°C to 105°C. All other electrical specifications are identical. The extended temperature range of BD7562SF-E2 may be beneficial for industrial or automotive applications requiring higher temperature operation. Both parts are otherwise functionally equivalent.

Q10: Is pin-to-pin compatibility guaranteed for all 8-SOIC substitutes?

A: Pin-to-pin compatibility is confirmed for LMC6032IMX/NOPB and LMC662AIM/NOPB, as both maintain identical 8-SOIC pin configuration and electrical function. However, AD8056ARZ and LM833DR2G, while also in 8-SOIC packages, may have different pin assignments for specific functions. PCB layout and schematic review is required before substitution of cross-technology alternatives. Rohm BD7562 and BD7542 parts use 8-SOP packaging with different physical dimensions, requiring PCB footprint verification.

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