LMP2012MMX Equivalent & Substitute Parts

Part Overview

The LMP2012MMX is a general-purpose operational amplifier manufactured by Texas Instruments, featuring dual circuits in an 8-VSSOP package. This device is classified as obsolete, which necessitates identification of functionally equivalent substitute components for ongoing design support and production continuity. The LMP2012MMX operates across a 2.7 V to 5.25 V supply range with rail-to-rail output capability, making it suitable for low-voltage analog signal processing applications. Substitute parts must maintain compatibility with the original electrical specifications and physical package constraints while offering active product status and improved availability.

Key Parameters

Parameter	LMP2012MMX	Unit
Amplifier Type	General Purpose
Number of Circuits	2
Output Type	Rail-to-Rail
Slew Rate	4	V/µs
Gain Bandwidth Product	3	MHz
Current - Input Bias	3	pA
Voltage - Input Offset	0.12	µV
Current - Supply	930	µA
Current - Output / Channel	17	mA
Voltage - Supply Span (Min)	2.7	V
Voltage - Supply Span (Max)	5.25	V
Operating Temperature Range	-40 to 125	°C
Package / Case	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Mounting Type	Surface Mount
Product Status	Obsolete
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitute parts for the LMP2012MMX are grouped based on electrical and mechanical compatibility within the following criteria:

Primary Substitution Criteria:

Dual-circuit (2 circuits) operational amplifier configuration
Rail-to-rail output capability
8-pin surface-mount package (8-MSOP or 8-VSSOP)
Supply voltage range compatibility: minimum 2.7 V, maximum ≥5.25 V
Operating temperature range: -40°C to 125°C or extended
Mounting type: Surface Mount

Grouping Logic:

Group 1: Analog Devices AD8646 Series (General Purpose, Active Status) The AD8646ARMZ, AD8646ARMZ-REEL, AD8646WARMZ-R7, and AD8646WARMZ-RL variants represent the primary substitute family. These devices maintain general-purpose amplifier classification with identical dual-circuit, rail-to-rail architecture. All variants share identical electrical specifications and differ only in packaging format (Tube, Cut Tape & Digi-Reel, or Tape & Reel). These parts are active products with ROHS3 compliance, addressing the RoHS non-compliance limitation of the original LMP2012MMX.

Group 2: Analog Devices ADA4891-2 Series (CMOS, High-Performance, Active Status) The ADA4891-2ARMZ, ADA4891-2ARMZ-R7, and ADA4891-2ARMZ-RL variants represent higher-performance alternatives with CMOS architecture. These devices maintain dual-circuit, rail-to-rail output configuration with identical supply voltage range (2.7 V to 5.5 V) and operating temperature span (-40°C to 125°C). Electrical performance is significantly enhanced with higher slew rate (210 V/µs vs. 4 V/µs) and gain bandwidth product (105 MHz vs. 3 MHz), suitable for applications requiring improved dynamic response.

Group 3: Rohm Semiconductor BU7266 Series (Ultra-Low Power, Active Status) The BU7266FVM-TR and BU7266SFVM-TR variants represent ultra-low-power alternatives with CMOS architecture. These devices maintain dual-circuit, rail-to-rail output with extended supply voltage range (1.8 V to 5.5 V). Operating temperature differs: BU7266FVM-TR operates -40°C to 85°C, while BU7266SFVM-TR extends to -40°C to 105°C. Supply current is significantly reduced (700 nA vs. 930 µA), making these suitable for battery-powered or energy-constrained applications.

Group 4: Rohm Semiconductor BU7486FVM-TR (Mid-Range Performance, Active Status) The BU7486FVM-TR represents a mid-range alternative with CMOS architecture, dual circuits, and rail-to-rail output. Supply voltage range is 3 V to 5.5 V (minimum higher than original), with operating temperature -40°C to 105°C. Slew rate (10 V/µs) and gain bandwidth product (10 MHz) provide moderate performance enhancement over the LMP2012MMX.

Parameter Comparison

Parameter	LMP2012MMX	AD8646ARMZ	ADA4891-2ARMZ	BU7266FVM-TR	BU7486FVM-TR	Unit
Amplifier Type	General Purpose	General Purpose	CMOS	CMOS	CMOS
Number of Circuits	2	2	2	2	2
Output Type	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail	Rail-to-Rail
Slew Rate	4	11	210	0.0024	10	V/µs
Gain Bandwidth Product	3	24	105	4	10	MHz
Current - Input Bias	3	0.3	2	1	1	pA
Voltage - Input Offset	0.12	600	2500	1000	1000	µV
Current - Supply	930	1500	4400	700	6000	µA
Current - Output / Channel	17	120	125	4	12	mA
Voltage - Supply Span (Min)	2.7	2.7	2.7	1.8	3	V
Voltage - Supply Span (Max)	5.25	5.5	5.5	5.5	5.5	V
Operating Temperature (Min)	-40	-40	-40	-40	-40	°C
Operating Temperature (Max)	125	125	125	85	105	°C
Package / Case	8-TSSOP, 8-MSOP	8-TSSOP, 8-MSOP	8-TSSOP, 8-MSOP	8-VSSOP, 8-MSOP	8-VSSOP, 8-MSOP
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Product Status	Obsolete	Active	Active	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement with Minimal Design Impact:

Select AD8646ARMZ, AD8646ARMZ-REEL, AD8646WARMZ-R7, or AD8646WARMZ-RL based on packaging requirements. These Analog Devices general-purpose amplifiers maintain the closest electrical profile to the LMP2012MMX while offering active product status and ROHS3 compliance. All AD8646 variants are electrically identical; selection depends on procurement format: Tube packaging for small quantities, Cut Tape & Digi-Reel for medium volumes, or Tape & Reel for high-volume production. The AD8646 series provides improved slew rate (11 V/µs vs. 4 V/µs) and gain bandwidth product (24 MHz vs. 3 MHz) without requiring circuit redesign.

For High-Performance Applications:

Select ADA4891-2ARMZ, ADA4891-2ARMZ-R7, or ADA4891-2ARMZ-RL when enhanced dynamic performance is required. These CMOS amplifiers deliver significantly higher slew rate (210 V/µs) and gain bandwidth product (105 MHz), with -3dB bandwidth of 90 MHz. All ADA4891-2 variants are electrically identical; packaging selection follows the same criteria as the AD8646 series. Higher supply current (4.4 mA per channel) and increased input offset voltage (2.5 mV) must be evaluated against application requirements.

For Ultra-Low-Power Applications:

Select BU7266FVM-TR for applications operating at -40°C to 85°C, or BU7266SFVM-TR for extended temperature range to 105°C. These Rohm Semiconductor devices reduce supply current to 700 nA, providing substantial power savings for battery-powered systems. Extended minimum supply voltage (1.8 V) enables operation in lower-voltage environments. Trade-offs include significantly reduced slew rate (0.0024 V/µs) and gain bandwidth product (4 kHz), limiting use to low-frequency signal processing.

For Mid-Range Performance with Extended Temperature:

Select BU7486FVM-TR when moderate performance enhancement and extended operating temperature to 105°C are required. This device provides 10 V/µs slew rate and 10 MHz gain bandwidth product with 6 mA supply current. Minimum supply voltage of 3 V restricts use in 2.7 V systems.

Compliance Considerations:

All substitute parts listed are ROHS3 compliant, addressing the RoHS non-compliance status of the obsolete LMP2012MMX. All parts maintain REACH Unaffected status and EAR99 export classification. Moisture Sensitivity Level (MSL) is 1 (Unlimited) for all substitutes, matching the original device.

Frequently Asked Questions (FAQ)

Q: Can the AD8646ARMZ directly replace the LMP2012MMX without circuit modifications?

A: The AD8646ARMZ maintains electrical compatibility within the dual-circuit, rail-to-rail, general-purpose amplifier category. Pin configuration and package footprint (8-MSOP) are compatible. However, the AD8646 exhibits higher input offset voltage (600 µV vs. 0.12 µV) and lower input bias current (0.3 pA vs. 3 pA). Circuit performance may differ in precision applications requiring low offset voltage. Functional substitution is valid for general-purpose signal conditioning, buffering, and filtering applications.

Q: What is the difference between AD8646ARMZ, AD8646ARMZ-REEL, AD8646WARMZ-R7, and AD8646WARMZ-RL?

A: All four variants are electrically identical AD8646 general-purpose amplifiers. Differences are packaging and delivery format only: AD8646ARMZ is supplied in Tube packaging; AD8646ARMZ-REEL is supplied in Cut Tape & Digi-Reel format; AD8646WARMZ-R7 and AD8646WARMZ-RL are supplied in Cut Tape & Digi-Reel and Tape & Reel formats respectively. Selection depends on production volume and assembly equipment compatibility. Electrical specifications, performance, and reliability are identical across all variants.

Q: Why does the ADA4891-2ARMZ have higher supply current than the LMP2012MMX?

A: The ADA4891-2ARMZ is a CMOS amplifier with significantly higher gain bandwidth product (105 MHz vs. 3 MHz) and slew rate (210 V/µs vs. 4 V/µs). Enhanced performance requires higher quiescent current (4.4 mA per channel vs. 930 µA). This trade-off is inherent to the architecture and cannot be reduced without sacrificing performance. Applications requiring both low power consumption and high bandwidth must evaluate this constraint.

Q: Is the BU7266FVM-TR suitable for applications requiring 125°C operation?

A: No. The BU7266FVM-TR operates only to 85°C maximum. For applications requiring -40°C to 125°C operation, select BU7266SFVM-TR, which extends the upper temperature limit to 105°C. However, BU7266SFVM-TR still does not reach 125°C. For full -40°C to 125°C operation, select AD8646 or ADA4891-2 series devices.

Q: Can the BU7486FVM-TR operate at 2.7 V supply voltage?

A: No. The BU7486FVM-TR minimum supply voltage is 3 V. Applications requiring 2.7 V operation must select AD8646 or ADA4891-2 series devices, which support 2.7 V minimum supply. The BU7266 series extends minimum supply to 1.8 V for ultra-low-voltage applications.

Q: What is the significance of the -3dB Bandwidth specification for the ADA4891-2ARMZ?

A: The -3dB Bandwidth of 90 MHz indicates the frequency at which the amplifier output power is reduced to half (-3dB) relative to the DC gain. This specification is provided only for the ADA4891-2 series and reflects the high-frequency performance capability. The LMP2012MMX and other substitute parts do not specify this parameter, indicating lower high-frequency performance. This specification is relevant only for applications requiring high-frequency signal processing above 10 MHz.

Q: Are all substitute parts available in the same 8-VSSOP package as the LMP2012MMX?

A: The LMP2012MMX is specified in 8-VSSOP package. Substitute parts are available in 8-MSOP or 8-VSSOP packages. The BU7266 and BU7486 series explicitly support 8-VSSOP (0.110", 2.80mm Width), while AD8646 and ADA4891-2 series are specified in 8-MSOP (0.118", 3.00mm Width). Physical package dimensions differ slightly. PCB footprint compatibility must be verified before substitution. Consult device datasheets for precise pin configuration and land pattern specifications.

Q: What inventory levels are available for each substitute part?

A: Current inventory levels are: AD8646ARMZ (2,650 pcs), AD8646ARMZ-REEL (6,400 pcs), AD8646WARMZ-R7 (3,400 pcs), AD8646WARMZ-RL (923 pcs), ADA4891-2ARMZ (1,300 pcs), ADA4891-2ARMZ-R7 (3,983 pcs), ADA4891-2ARMZ-RL (3,446 pcs), BU7266FVM-TR (5,787 pcs), BU7266SFVM-TR (6,128 pcs), and BU7486FVM-TR (4,095 pcs). Inventory levels are subject to change. Verify current availability with supplier before finalizing procurement decisions.

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