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LMP2012MM Equivalent & Substitute Parts
Part Overview
The LMP2012MM is a general-purpose operational amplifier manufactured by Texas Instruments, featuring dual circuits in an 8-VSSOP package with rail-to-rail output capability. This device is classified as obsolete, which necessitates identification of equivalent and substitute components for ongoing design support and procurement continuity. The LMP2012MM operates across a 2.7 V to 5.25 V supply range with a 3 MHz gain-bandwidth product, making it suitable for low-to-moderate bandwidth applications requiring low input bias current and minimal input offset voltage.
Substiute Parts
Key Parameters
| Parameter | Value | 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 | -40 to 125 | °C |
| Package / Case | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) | — |
| Mounting Type | Surface Mount | — |
| RoHS Status | RoHS non-compliant | — |
Substitute Part Grouping Explanation
Substitution of the LMP2012MM is determined by the following critical parameters: dual-circuit configuration, general-purpose amplifier topology, rail-to-rail output capability, 8-pin surface-mount package compatibility, and supply voltage range overlap (minimum 2.7 V). The substitute parts are grouped into two categories based on functional equivalence:
Category 1: Direct Functional Equivalents (Texas Instruments LMP Series) These parts maintain identical electrical specifications and package form factors. LMP2012MM/NOPB is the active production variant of the base LMP2012 design with RoHS3 compliance and identical performance parameters.
Category 2: Higher-Performance Alternatives (Analog Devices AD8646 Series) The AD8646 family provides enhanced performance characteristics including higher slew rate (11 V/µs vs. 4 V/µs), increased gain-bandwidth product (24 MHz vs. 3 MHz), and superior output current capability (120 mA vs. 17 mA per channel). These devices maintain compatible supply voltage ranges (2.7 V to 5.5 V) and identical package dimensions, enabling direct substitution in applications where improved performance margins are acceptable.
Category 3: Ultra-Low-Power and High-Speed Alternatives The ADA4891-2 series offers CMOS architecture with significantly elevated slew rate (210 V/µs) and bandwidth (105 MHz), suitable for applications requiring high-speed signal processing. The BU7266 series from Rohm Semiconductor provides ultra-low quiescent current (700 nA) for power-constrained applications, though with reduced bandwidth (4 kHz).
Parameter Comparison
| Part Number | Manufacturer | Amplifier Type | Slew Rate (V/µs) | GBW (MHz) | Input Bias (pA) | Supply Current (µA) | Output Current/Ch (mA) | Supply Min (V) | Supply Max (V) | Temp Range (°C) | Product Status | RoHS Status |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| LMP2012MM | Texas Instruments | General Purpose | 4 | 3 | 3 | 930 | 17 | 2.7 | 5.25 | -40 to 125 | Obsolete | Non-compliant |
| LMP2012MM/NOPB | Texas Instruments | General Purpose | 4 | 3 | 3 | 930 | 17 | 2.7 | 5.25 | -40 to 125 | Active | RoHS3 Compliant |
| AD8646ARMZ | Analog Devices Inc. | General Purpose | 11 | 24 | 0.3 | 1500 | 120 | 2.7 | 5.5 | -40 to 125 | Active | RoHS3 Compliant |
| AD8646ARMZ-REEL | Analog Devices Inc. | General Purpose | 11 | 24 | 0.3 | 1500 | 120 | 2.7 | 5.5 | -40 to 125 | Active | RoHS3 Compliant |
| AD8646WARMZ-R7 | Analog Devices Inc. | General Purpose | 11 | 24 | 0.3 | 1500 | 120 | 2.7 | 5.5 | -40 to 125 | Active | RoHS3 Compliant |
| AD8646WARMZ-RL | Analog Devices Inc. | General Purpose | 11 | 24 | 0.3 | 1500 | 120 | 2.7 | 5.5 | -40 to 125 | Active | RoHS3 Compliant |
| ADA4891-2ARMZ | Analog Devices Inc. | CMOS | 210 | 105 | 2 | 4400 | 125 | 2.7 | 5.5 | -40 to 125 | Active | RoHS3 Compliant |
| ADA4891-2ARMZ-R7 | Analog Devices Inc. | CMOS | 210 | 105 | 2 | 4400 | 125 | 2.7 | 5.5 | -40 to 125 | Active | RoHS3 Compliant |
| ADA4891-2ARMZ-RL | Analog Devices Inc. | CMOS | 210 | 105 | 2 | 4400 | 125 | 2.7 | 5.5 | -40 to 125 | Active | RoHS3 Compliant |
| BU7266FVM-TR | Rohm Semiconductor | CMOS | 0.0024 | 0.004 | 1 | 700 | 4 | 1.8 | 5.5 | -40 to 85 | Active | RoHS3 Compliant |
| BU7266SFVM-TR | Rohm Semiconductor | CMOS | 0.0024 | 0.004 | 1 | 700 | 4 | 1.8 | 5.5 | -40 to 105 | Active | RoHS3 Compliant |
Engineering Selection Recommendations
For Direct Replacement with Active Product Status: LMP2012MM/NOPB is the recommended primary substitute. This part maintains identical electrical performance and package specifications while offering active product status and RoHS3 compliance. The transition from the obsolete LMP2012MM to LMP2012MM/NOPB requires no circuit redesign and supports regulatory compliance requirements.
For Enhanced Performance Applications: The AD8646 family (AD8646ARMZ, AD8646ARMZ-REEL, AD8646WARMZ-R7, AD8646WARMZ-RL) provides superior performance margins with 2.75× higher slew rate, 8× higher gain-bandwidth product, and 7× higher output current capability. These devices are suitable for applications where the original LMP2012MM specifications represent minimum requirements rather than design targets. All AD8646 variants maintain compatible supply voltage ranges and package dimensions.
For High-Speed Signal Processing: The ADA4891-2 series (ADA4891-2ARMZ, ADA4891-2ARMZ-R7, ADA4891-2ARMZ-RL) offers CMOS architecture with 52.5× higher slew rate and 35× higher bandwidth. Selection of this family is appropriate for applications requiring wideband signal conditioning, high-frequency filtering, or fast transient response. Increased supply current (4.4 mA vs. 930 µA) must be evaluated against power budget constraints.
For Ultra-Low-Power Applications: The BU7266 series (BU7266FVM-TR, BU7266SFVM-TR) from Rohm Semiconductor provides 1.3× lower quiescent current (700 nA) compared to the LMP2012MM. These devices are suitable for battery-powered or energy-harvesting applications where power consumption is the primary design constraint. The reduced bandwidth (4 kHz) and output current (4 mA) limit applicability to low-frequency signal conditioning.
Packaging and Compliance Considerations: All substitute parts maintain 8-pin surface-mount package compatibility with the LMP2012MM. Packaging variants (Tube, Cut Tape & Digi-Reel, Tape & Reel) are available across the AD8646 and ADA4891-2 families to accommodate different procurement and assembly workflows. All recommended substitutes carry RoHS3 compliance certification, supporting regulatory requirements for new designs.
Frequently Asked Questions (FAQ)
Q: Can LMP2012MM/NOPB be used as a direct drop-in replacement for LMP2012MM?
A: Yes. LMP2012MM/NOPB is the active production equivalent of the obsolete LMP2012MM. Both parts share identical electrical specifications, package dimensions (8-VSSOP), and pin assignments. The primary difference is product status (Active vs. Obsolete) and RoHS compliance (RoHS3 Compliant vs. Non-compliant). No circuit modifications are required.
Q: What are the key differences between the LMP2012MM and AD8646 family?
A: The AD8646 family provides enhanced performance across multiple parameters: slew rate increases from 4 V/µs to 11 V/µs, gain-bandwidth product increases from 3 MHz to 24 MHz, and output current per channel increases from 17 mA to 120 mA. Input bias current improves from 3 pA to 0.3 pA. Supply voltage range expands slightly (2.7 V to 5.5 V vs. 2.7 V to 5.25 V). These improvements enable use in higher-frequency applications and higher-impedance load conditions.
Q: Are the AD8646 variants (ARMZ, ARMZ-REEL, WARMZ-R7, WARMZ-RL) electrically identical?
A: Yes. All AD8646 variants share identical electrical specifications. Differences are limited to packaging format: ARMZ is supplied in Tube packaging, ARMZ-REEL and WARMZ-R7 are supplied in Cut Tape & Digi-Reel format, and WARMZ-RL is supplied in Tape & Reel format. Selection among variants depends on procurement quantity and assembly process requirements.
Q: When should the ADA4891-2 series be selected over the AD8646 family?
A: The ADA4891-2 series is appropriate when applications require slew rates exceeding 11 V/µs or bandwidth exceeding 24 MHz. The ADA4891-2 provides 210 V/µs slew rate and 105 MHz bandwidth, enabling high-speed signal conditioning, wideband filtering, and fast transient response. The trade-off is increased supply current (4.4 mA per channel vs. 1.5 mA for AD8646), which must be evaluated against power budget constraints.
Q: What is the operating temperature range difference between BU7266FVM-TR and BU7266SFVM-TR?
A: BU7266FVM-TR operates across -40°C to 85°C, while BU7266SFVM-TR extends the upper temperature limit to 105°C. Both parts are otherwise electrically identical. Selection depends on application temperature requirements.
Q: Can the BU7266 series replace the LMP2012MM in all applications?
A: No. The BU7266 series is suitable only for applications where bandwidth requirements are minimal (4 kHz maximum) and ultra-low power consumption is critical (700 nA quiescent current). The 1000× reduction in gain-bandwidth product and 4.25× reduction in output current per channel make this family unsuitable for general-purpose amplification at frequencies above a few kilohertz.
Q: Are all substitute parts compatible with the same PCB footprint as the LMP2012MM?
A: Yes. All substitute parts use 8-pin surface-mount packages with identical pin spacing and dimensions (0.118" or 3.00 mm width for the primary devices). PCB footprints designed for the LMP2012MM are compatible with all listed substitutes without modification.
Q: What is the significance of RoHS3 compliance for substitute part selection?
A: RoHS3 compliance indicates conformance to the Restriction of Hazardous Substances Directive, which restricts the use of specific hazardous materials in electrical and electronic equipment. The original LMP2012MM is RoHS non-compliant, while all recommended substitutes carry RoHS3 compliance certification. For new designs or products subject to regulatory requirements, RoHS3-compliant substitutes are mandatory.
Q: How do input offset voltage specifications compare across substitute options?
A: The LMP2012MM specifies 0.12 µV input offset voltage. The AD8646 family increases this to 600 µV, while the ADA4891-2 series specifies 2.5 mV, and the BU7266 series specifies 1 mV. For precision analog applications requiring minimal offset voltage, the LMP2012MM/NOPB direct equivalent is preferred. For general-purpose applications, the higher offset voltages of alternative families are typically acceptable with appropriate circuit design techniques.
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