Texas Instruments LMP2011MAX

Overview

LMP2011MAX from Texas Instruments is a single-channel, high-precision, rail-to-rail output operational amplifier optimized for low-drift, low-noise DC-coupled signal conditioning in 2.7 V to 5 V systems. It delivers 60 µV max input offset voltage over temperature, 35 nV/√Hz input-referred voltage noise (no 1/f component), 130 dB CMRR, and 4 V/µs slew rate - enabling accurate thermocouple amplification, strain gauge bridge interfaces, and precision ADC buffering.

For engineers reviewing the LMP2011MAX datasheet, LMP2011MAX pinout, LMP2011MAX application, or LMP2011MAX equivalent, key selection criteria include guaranteed low VOS drift (0.015 µV/°C), auto-zero architecture eliminating chopper-induced mixing artifacts, no external capacitor requirement, copper leadframe for minimized thermal EMF, and validated performance across −40°C to +125°C.

Technical Context

The LMP2011MAX employs patented auto-zero architecture that continuously measures and corrects input offset voltage without chopping-avoiding 1/f noise and intermodulation distortion common in chopper-stabilized amplifiers. Its input stage operates at ~35 kHz correction frequency, producing pulsed picoamp-level input currents rather than continuous bias current.

This architecture enables ultra-stable DC accuracy (60 µV max VOS over full temperature range) while sustaining 3 MHz gain-bandwidth product and 130 dB open-loop gain. The device uses a copper leadframe to cancel thermocouple voltages at PCB solder joints, critical for sub-microvolt-level measurements in precision instrumentation.

Key Specifications

Pinout & Package

Package: SOIC-8 (D package), body size 4.90 mm × 3.91 mm, JEDEC MS-012AC compliant. RoHS-compliant, Pb-free finish.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-precision op amp applications.

Compared with OPA2189IDR and ADA4522-1ARZ, the LMP2011MAX offers superior thermal EMF immunity via copper leadframe, faster overload recovery (40 ms vs >100 ms), and guaranteed no-external-capacitor operation - making it uniquely suited for embedded industrial sensors where layout simplicity and long-term drift stability are paramount.

Availability

LMP2011MAX is available at Aetrix Electronics and suitable for precision instrumentation, industrial sensor conditioning, and medical device signal chains requiring stable component supply across extended temperature ranges and multi-year production cycles.

Supply support for LMP2011MAX includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor company delivering analog and embedded processing solutions, with leadership in precision analog ICs since the 1950s.

The LMP2011MAX belongs to TI's LMP™ precision amplifier family, designed specifically for ultra-stable, low-drift, low-noise DC signal conditioning in harsh industrial and instrumentation environments.

FAQ

What is the maximum operating supply voltage for the LMP2011MAX?

The LMP2011MAX has an absolute maximum supply voltage rating of 5.8 V, but its recommended operating range is 2.7 V to 5.25 V. Operation above 5.25 V risks exceeding safe junction temperature limits and may degrade long-term reliability. All electrical specifications-including 60 µV max VOS and 130 dB CMRR-are guaranteed only within the 2.7 V–5.25 V range. The LMP2011MAX is not rated for 12 V or dual-supply ±5 V operation.

Does the LMP2011MAX require external compensation capacitors?

No, the LMP2011MAX does not require external compensation capacitors. Its internal compensation ensures unity-gain stability with capacitive loads up to 20 pF, eliminating dielectric absorption and leakage-related settling errors. This design choice directly supports fast, repeatable DC settling in precision measurement systems - a key differentiator versus alternatives like OPA2189IDR, which mandates external capacitor placement for stability.

How does the LMP2011MAX achieve low thermal EMF in PCB mounting?

The LMP2011MAX uses a copper leadframe instead of traditional Kovar or Alloy 42, creating matched thermocouple junctions at each pin-to-PCB solder interface. This cancels parasitic thermoelectric voltages that would otherwise contribute up to 35 µV/°C error. Combined with the SOT-23 variant's compact 2.9 mm × 1.6 mm footprint (not applicable to LMP2011MAX's SOIC-8), this architecture reduces thermal gradient sensitivity - critical for sub-µV-level measurements in precision instrumentation using the LMP2011MAX.

What is the input common-mode voltage range for the LMP2011MAX?

The LMP2011MAX supports an input common-mode voltage range from (V−) − 0.3 V to (V+) + 0.3 V per absolute maximum ratings, but its specified linear operating range is (V−) to (V+) − 1.2 V at 5 V supply. At 5 V, the usable common-mode range is 0 V to 3.8 V - sufficient for most single-supply sensor interfaces. Unlike rail-to-rail input amplifiers such as ADA4522-1ARZ, the LMP2011MAX does not support inputs extending to V−, limiting its use in level-shifting applications where negative headroom is needed.

Can the LMP2011MAX drive heavy capacitive loads like ADC inputs?

The LMP2011MAX is characterized for stability with capacitive loads ≤20 pF. For heavier loads (e.g., 100 pF typical of SAR ADC inputs), external isolation resistance (≥100 Ω) is required between the LMP2011MAX output and the ADC input capacitor to maintain phase margin and prevent oscillation. TI's application note SBAA222 confirms this limitation and provides layout guidance. Direct driving of >20 pF loads without series resistance risks instability and degraded settling behavior in systems using the LMP2011MAX.