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Texas Instruments LMP2012MAX/NOPB
- Part No.:
- LMP2012MAX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LMP2012MAX/NOPB.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,495
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Product details
Overview
LMP2012MAX/NOPB from Texas Instruments is a dual high-precision rail-to-rail output operational amplifier designed for low-drift, low-noise signal conditioning in precision instrumentation. It delivers 60 µV max input offset voltage over temperature, 35 nV/√Hz input-referred voltage noise (no 1/f component), 130 dB CMRR, 120 dB PSRR, and 3 MHz gain-bandwidth product - enabling accurate amplification of microvolt-level sensor outputs in thermocouple, strain gauge, and ADC buffer applications.
For engineers reviewing the LMP2012MAX/NOPB datasheet, LMP2012MAX/NOPB pinout, LMP2012MAX/NOPB application, or LMP2012MAX/NOPB equivalent, key selection criteria include guaranteed VOS stability over −40°C to +125°C, absence of external compensation capacitors, ultra-low input bias current (−3 pA typical), and validated performance at 2.7 V to 5.25 V single-supply operation.
Technical Context
The LMP2012MAX/NOPB employs patented auto-zero architecture that continuously measures and corrects input offset voltage without chopper-induced mixing artifacts, eliminating 1/f noise while maintaining 35 nV/√Hz flat-band noise density. Its input stage uses copper leadframe construction to suppress thermocouple EMF errors arising from PCB thermal gradients.
This dual-channel op amp operates with rail-to-rail output swing within 30 mV of supply rails, supports stable unity-gain configuration without external compensation, and achieves 4 V/µs slew rate with 50 ms overload recovery time - making it suitable for fast-settling, high-accuracy analog front-ends in industrial data acquisition systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | Max 60 µV over −40°C to +125°C - ensures <±0.01% gain error in 100× gain transducer amplifiers without trimming. |
| Input-Referred Voltage Noise | 35 nV/√Hz (flat, no 1/f) - enables sub-µV RMS noise in 0.1–10 Hz bandwidths critical for precision DC measurements. |
| CMRR / PSRR | 130 dB / 120 dB - rejects >99.999% of common-mode and supply ripple in noisy industrial environments. |
| Gain-Bandwidth Product | 3 MHz - supports stable closed-loop gains up to 30× at 100 kHz, sufficient for anti-aliasing and sensor signal conditioning. |
| Rail-to-Rail Output Swing | Within 30 mV of V+ and V− at RL ≥ 10 kΩ - maximizes dynamic range in 3.3 V or 5 V single-supply systems. |
| Supply Current per Channel | 930 µA typical at 5 V - allows dual-channel precision amplification with <2 mA total quiescent current. |
| Input Bias Current | −3 pA typical - permits use with high-impedance sources (e.g., pH electrodes, piezoresistive sensors) without significant offset shift. |
Pinout & Package
VSSOP-8 package (3.00 mm × 3.00 mm body size), thin-profile surface-mount, lead-free and RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: OUT A | Output, channel A | Amplified signal output for first op amp; rail-to-rail capable, drives ≥10 kΩ loads. |
| 2: –IN A | Inverting input, channel A | Differential input node for channel A; auto-zero correction applied internally. |
| 3: +IN A | Non-inverting input, channel A | Differential input node for channel A; matched impedance to –IN A minimizes CMRR degradation. |
| 4: V– | Negative power supply | Reference for both channels; must be connected to lowest system potential (e.g., GND in single-supply). |
| 5: +IN B | Non-inverting input, channel B | Differential input node for second op amp; electrically isolated from channel A inputs. |
| 6: –IN B | Inverting input, channel B | Differential input node for channel B; shares same auto-zero calibration engine as channel A. |
| 7: OUT B | Output, channel B | Amplified signal output for second op amp; independent sourcing/sinking capability (±15 mA). |
| 8: V+ | Positive power supply | Supply rail for both channels; operates from 2.7 V to 5.25 V; decoupling capacitor required at pin. |
Key Features
| Feature | Design Value |
|---|---|
| No 1/f noise | Flat 35 nV/√Hz voltage noise down to 0.1 Hz eliminates drift-induced measurement errors in long-integration applications. |
| Auto-zero architecture | Continuous offset correction at ~35 kHz enables <60 µV max VOS over full temperature range without manual trimming. |
| Copper leadframe | Eliminates thermocouple EMF errors (<0.01 µV/°C) between IC leads and copper PCB traces, critical for µV-level accuracy. |
| No external capacitors required | Internal compensation ensures unity-gain stability - removes dielectric absorption and leakage errors from external caps. |
| Rail-to-rail output | Swings to within 30 mV of V+ and V− at 10 kΩ load - preserves full ADC input range in 3.3 V or 5 V systems. |
Applications
| Precision Thermocouple Amplifier | Strain Gauge Bridge Amplifier |
|---|---|
|
Use Scenario: Amplifying µV-level Seebeck voltages from Type K thermocouples across −40°C to +125°C ambient. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier with 100× gain, rejecting cold-junction EMF and supply ripple. Use Value: 60 µV max VOS drift ensures <0.3°C absolute error without calibration; 130 dB CMRR rejects EMI from adjacent 50/60 Hz wiring. |
Use Scenario: Conditioning differential output from 350 Ω Wheatstone bridge under mechanical stress in load cells. IC Role / Device Role / Timing Role: Low-noise, low-drift difference amplifier with matched input impedances and 1000× gain. Use Value: 35 nV/√Hz noise enables <1 µV RMS input-referred noise in 10 Hz bandwidth; copper leadframe prevents thermal gradient offsets. |
| High-Resolution ADC Driver | Low-Power Sensor Signal Chain |
|
Use Scenario: Driving SAR ADC inputs (e.g., ADS8860) with 16-bit+ resolution in portable test equipment. IC Role / Device Role / Timing Role: Buffer and level-shifter ensuring full-scale settling within 100 ns after multiplexer switching. Use Value: 4 V/µs slew rate and 50 ms overload recovery enable clean sampling after transient events; rail-to-rail swing maximizes SNR. |
Use Scenario: Signal conditioning for battery-powered gas sensors requiring µA-level quiescent current and long-term stability. IC Role / Device Role / Timing Role: Dual-channel amplifier handling both sensor excitation and output amplification in single IC. Use Value: 930 µA/channel supply current enables >1-year battery life; 0.006 µV/month lifetime drift reduces recalibration frequency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2189IDR | Zero-drift architecture with 5.7 µV max VOS, 5.6 nV/√Hz noise, but requires external 100 pF compensation cap for unity-gain stability. | Better noise and offset specs, but higher supply current (1.3 mA/channel) and larger SOIC-8 footprint (4.9 × 3.9 mm vs. 3.0 × 3.0 mm). | Choose OPA2189IDR when ultimate DC accuracy outweighs board space and power constraints. |
| AD8629ARZ-REEL7 | Chopper-stabilized design with 1 µV max VOS, but exhibits 1/f noise corner at 0.1 Hz and 10 µs overload recovery time. | Superior initial offset, but chopper artifacts limit THD+N in audio-frequency applications; slower recovery impacts multiplexed sensor systems. | Choose AD8629ARZ-REEL7 only for static DC measurements where 1/f noise and recovery time are non-critical. |
Compared with OPA2189IDR and AD8629ARZ-REEL7, the LMP2012MAX/NOPB uniquely balances ultra-low 1/f-free noise, guaranteed VOS over temperature, minimal board area (VSSOP-8), and no external components - making it optimal for space-constrained, battery-operated precision instruments requiring long-term stability without recalibration.
Availability
LMP2012MAX/NOPB is available at Aetrix Electronics and suitable for precision instrumentation amplifiers, thermocouple signal conditioning, and strain gauge bridge amplifiers requiring stable component supply across industrial temperature ranges and multi-year production cycles.
Supply support for LMP2012MAX/NOPB 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 1930.
The LMP™ precision amplifier family - including the LMP2012MAX/NOPB - was engineered specifically for ultra-stable, low-noise DC signal conditioning in industrial, medical, and test equipment where long-term drift and thermal EMF must be minimized.
FAQ
What is the maximum operating supply voltage for the LMP2012MAX/NOPB?
The LMP2012MAX/NOPB 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 internal junction limits and invalidating parametric guarantees; all electrical characteristics in the datasheet are specified up to 5.25 V. The LMP2012MAX/NOPB must not be operated beyond this limit in production designs.
Does the LMP2012MAX/NOPB require external compensation capacitors?
No, the LMP2012MAX/NOPB is internally compensated and stable in unity-gain configuration without any external capacitors. This eliminates errors from capacitor dielectric absorption and leakage, which would otherwise cause slow settling and offset drift. The LMP2012MAX/NOPB's auto-zero architecture inherently provides phase margin >60°, enabling direct use in follower and gain-of-ten configurations.
How does the LMP2012MAX/NOPB achieve zero 1/f noise?
The LMP2012MAX/NOPB uses patented auto-zero techniques that sample and null input offset voltage at ~35 kHz, avoiding the low-frequency modulation artifacts inherent in chopper-stabilized amplifiers. This results in flat 35 nV/√Hz voltage noise from 0.1 Hz upward - unlike conventional op amps whose 1/f noise rises sharply below 10 Hz and corrupts DC-coupled measurements.
What is the guaranteed input offset voltage specification for LMP2012MAX/NOPB over temperature?
The LMP2012MAX/NOPB guarantees a maximum input offset voltage of 60 µV across the full operating temperature range of −40°C to +125°C. This is ensured via statistical quality control (SQC) correlation testing - not just at 25°C - making it suitable for uncalibrated industrial sensors where thermal drift directly impacts measurement accuracy.
Can the LMP2012MAX/NOPB drive ADC inputs directly?
Yes, the LMP2012MAX/NOPB is optimized for driving SAR and delta-sigma ADCs: its rail-to-rail output swings within 30 mV of V+ and V−, its 4 V/µs slew rate settles 16-bit codes in <100 ns, and its 50 ms overload recovery handles multiplexer-induced transients. When paired with a 10 kΩ ADC input impedance, the LMP2012MAX/NOPB maintains full DC accuracy without external buffering.
LMP2012MAX/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LMP®
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 4V/µs
- Gain Bandwidth Product:
- 3 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 3 pA
- Voltage - Input Offset:
- 0.12 µV
- Current - Supply:
- 930µA
- Current - Output / Channel:
- 17 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 5.25 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
LMP2012MAX/NOPB FAQ
1.How can I place an order for LMP2012MAX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMP2012MAX/NOPB on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LMP2012MAX/NOPB reliable?
The price and inventory of LMP2012MAX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMP2012MAX/NOPB is usually 5 days.
3.What payment methods are accepted for LMP2012MAX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMP2012MAX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMP2012MAX/NOPB?
LMP2012MAX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMP2012MAX/NOPB order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LMP2012MAX/NOPB?
For technical support, including LMP2012MAX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMP2012MAX/NOPB requirements.
6.How does Aetrix verify that LMP2012MAX/NOPB is sourced from the original manufacturer or authorized distributors?
All LMP2012MAX/NOPB products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LMP2012MAX/NOPB meets industry standards.
7.What is the process for return or replacement of LMP2012MAX/NOPB?
All LMP2012MAX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMP2012MAX/NOPB, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LMP2012MAX/NOPB part is unused and in its original packaging.
Return procedure for LMP2012MAX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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