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Texas Instruments LMP2021MF/NOPB
- Part No.:
- LMP2021MF/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LMP2021MF/NOPB.pdf
- Description:
- IC OPAMP ZER-DRIFT 1CIRC SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:8,685
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Product details
Overview
LMP2021MF/NOPB from Texas Instruments is a single-channel zero-drift precision operational amplifier designed for ultra-low-offset, low-noise sensor signal conditioning in high-accuracy analog front-ends. It delivers ±5 µV max input offset voltage, −0.004 µV/°C typical drift, 11 nV/√Hz input voltage noise at 1 kHz (AV = 1000), 5 MHz gain-bandwidth product, and rail-to-rail output swing - enabling direct interfacing with 24-bit ADCs in industrial weigh scales and bridge-based transducer systems.
For engineers reviewing the LMP2021MF/NOPB datasheet, LMP2021MF/NOPB pinout, LMP2021MF/NOPB application, or LMP2021MF/NOPB equivalent, this page provides verified package mapping (SOT-23-5), confirmed EMI-hardened performance up to 2.4 GHz, validated DC precision specs across −40°C to +125°C, and real-world alternative part comparisons for instrumentation-grade op-amp selection.
Technical Context
The LMP2021MF/NOPB employs proprietary continuous auto-zero correction to eliminate 1/f noise and suppress input offset drift, achieving near-zero long-term DC error without external calibration. Its internal EMI filtering rejects RF interference at 400–2400 MHz (EMIRR up to 82 dB), making it robust in wireless-adjacent environments.
This amplifier operates from 2.2 V to 5.5 V, supports rail-to-rail output (±135 mV from rails at 5 V, RL = 10 kΩ), and maintains 160 dB open-loop gain and 139 dB CMRR - critical for high-gain, low-error applications such as thermocouple amplification and pressure sensor buffers where gain accuracy and thermal stability are non-negotiable.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage (Max) | ±5 µV - ensures ≤0.0005% gain error in 1000× instrumentation amplifier configurations |
| Offset Drift (Typ) | −0.004 µV/°C - enables <1 µV total drift over full −40°C to +125°C range, eliminating recalibration |
| Input Voltage Noise | 260 nVPP (0.1–10 Hz) - supports sub-µV-level signal amplification in precision weigh scales |
| Gain-Bandwidth Product | 5 MHz - allows stable unity-gain operation and bandwidth up to ~4.8 MHz at G = 100 |
| EMI Rejection Ratio | 82 dB at 2.4 GHz - suppresses cellular/Wi-Fi-induced offset modulation without external shielding |
| Supply Current | 1.1 mA per amplifier - enables battery-powered operation for >1-year life in 10 µA sleep-mode systems |
| Operating Temp Range | −40°C to +125°C - qualified for under-hood automotive and industrial process control environments |
Pinout & Package
Package: 5-pin SOT-23 (DBV), body size 2.90 mm × 1.60 mm, moisture sensitivity level MSL-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUT | Output | Rail-to-rail voltage source capable of sourcing/sinking 30–50 mA; drives 10 kΩ loads within 135 mV of supply rails at 5 V |
| 2 - V− | Negative Supply | Ground reference or negative rail connection; supports single-supply (0 V) or dual-supply (±2.75 V) operation |
| 3 - +IN | Non-Inverting Input | High-impedance (≥10¹³ Ω) node with ±25 pA bias current; accepts common-mode voltages from −0.2 V to 4.2 V at 5 V supply |
| 4 - −IN | Inverting Input | Differential input node; used with feedback network to set closed-loop gain and reject common-mode noise |
| 5 - V+ | Positive Supply | Primary power input; operates from 2.2 V to 5.5 V; PSRR of 130 dB minimizes supply ripple coupling into output |
Key Features
| Feature | Design Value |
|---|---|
| Zero-drift architecture | Continuous auto-zero correction eliminates 1/f noise and reduces long-term drift to <1 µV over temperature |
| EMI-hardened inputs | On-chip RF filters provide 82 dB rejection at 2.4 GHz, removing need for external ferrites or shielded enclosures |
| Rail-to-rail output | Swings within 135 mV of V+ and 80 mV of V− at 5 V/10 kΩ, maximizing dynamic range for ADC interfacing |
| Ultra-low input bias current | ±25 pA typical enables use with high-impedance sources (e.g., pH electrodes, piezoresistive sensors) |
| High open-loop gain | 160 dB ensures <0.0001% gain error in G = 1000 configurations, critical for precision transducer interfaces |
Applications
| Thermocouple Amplifier | Bridge Sensor Interface |
|---|---|
Use Scenario: Amplifying microvolt-level Seebeck voltages from K-type thermocouples across −200°C to +1372°C with cold-junction compensation. IC Role / Device Role / Timing Role: Precision DC-coupled gain stage with ultra-low drift and no 1/f noise to preserve thermocouple linearity and repeatability. Use Value: Enables ±0.1°C measurement accuracy without periodic recalibration due to <1 µV total offset drift over full temperature range. | Use Scenario: Conditioning differential output from 350 Ω strain-gauge Wheatstone bridges in load cells and pressure transducers. IC Role / Device Role / Timing Role: Instrumentation amplifier front-end providing G = 100–1000 with matched input impedance and high CMRR. Use Value: Delivers 24-bit effective resolution by suppressing bridge imbalance errors and rejecting RF-induced offset shifts. |
| Medical ECG Front-End | Portable Battery-Powered DMM |
Use Scenario: Amplifying 0.5–5 mV cardiac signals in handheld ECG monitors with strict low-power and noise requirements. IC Role / Device Role / Timing Role: First-stage low-noise, low-drift amplifier with EMI filtering to reject cellular/Wi-Fi interference near patient. Use Value: Maintains diagnostic signal fidelity with 260 nVPP (0.1–10 Hz) noise and 82 dB EMIRR, eliminating false arrhythmia detection. | Use Scenario: High-precision voltage/current measurement in handheld digital multimeters operating on coin-cell batteries. IC Role / Device Role / Timing Role: Zero-drift buffer and gain stage for 6½-digit ADC input, minimizing zero-point drift during extended field use. Use Value: Achieves <1 ppm/°C system-level drift and 1.1 mA quiescent current, enabling >500-hour battery life at 100 ms/sample rate. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA333AIDBVR | Lower supply current (17 µA vs. 1.1 mA), but higher 0.1–10 Hz noise (5.5 µVPP vs. 260 nVPP); no specified EMIRR above 1 GHz | Better for ultra-low-power, low-bandwidth (<1 kHz) sensor nodes; unsuitable for RF-noisy industrial settings | Select OPA333AIDBVR only when sub-50 µA supply budget is mandatory and EMI immunity is not required |
| AD8628ARJZ-R7 | Higher input offset (±10 µV max), wider offset drift (±0.1 µV/°C), no published EMIRR data above 900 MHz | Acceptable for lab-grade instrumentation with controlled EMI; insufficient for factory-floor or automotive environments | Choose AD8628ARJZ-R7 if cost is primary constraint and 2.4 GHz EMI rejection is unnecessary |
Compared with OPA333AIDBVR and AD8628ARJZ-R7, the LMP2021MF/NOPB uniquely combines sub-µV drift, 260 nVPP low-frequency noise, and 82 dB EMIRR at 2.4 GHz - making it the only option qualified for 24-bit industrial weigh scales and wireless-co-located medical sensors requiring guaranteed long-term DC stability.
Availability
LMP2021MF/NOPB is available at Aetrix Electronics and suitable for precision instrumentation amplifiers, battery-powered portable test equipment, and bridge-based transducer interfaces requiring stable component supply across automotive, industrial automation, and medical device production programs.
Supply support for LMP2021MF/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 leader specializing in analog and embedded processing technologies, with decades of heritage in precision op-amps and signal-chain solutions.
The LMP2021MF/NOPB belongs to TI's LMP™ precision amplifier family, engineered specifically for ultra-low-drift, EMI-hardened signal conditioning in high-accuracy sensor interfaces and industrial measurement systems.
FAQ
What is the maximum input offset voltage specification for LMP2021MF/NOPB?
The LMP2021MF/NOPB has a maximum input offset voltage of ±5 µV across the full operating temperature range (−40°C to +125°C), as specified in the Electrical Characteristics table for 5 V supply conditions. This value is guaranteed by production testing and ensures minimal gain error in high-precision DC-coupled circuits. The typical offset is −0.4 µV at 25°C, and the LMP2021MF/NOPB achieves this performance using continuous auto-zero correction without external trimming.
Does LMP2021MF/NOPB support rail-to-rail output operation?
Yes, the LMP2021MF/NOPB features rail-to-rail output capability. At 5 V supply and 10 kΩ load, its output swings within 83 mV of V− and 135 mV of V+, meeting standard rail-to-rail definitions. This enables full utilization of ADC input ranges in single-supply systems. Performance is characterized across temperature and load conditions, with worst-case swing degradation limited to 204 mV from V+ at 125°C and 2 kΩ load - all data confirmed in the LMP2021MF/NOPB datasheet Section 6.5 and 6.6.
What is the EMI rejection performance of LMP2021MF/NOPB at 2.4 GHz?
The LMP2021MF/NOPB delivers 82 dB Electro-Magnetic Interference Rejection Ratio (EMIRR) at 2.4 GHz with 100 mVP RF input, as measured per JEDEC-standard methodology. This on-chip EMI hardening eliminates the need for external RF filters in Wi-Fi- and Bluetooth-adjacent designs. The EMIRR is frequency-dependent and increases from 58 dB at 400 MHz to 82 dB at 2.4 GHz, confirming robust immunity against modern wireless bands - a key differentiator versus non-EMI-hardened precision op-amps like the AD8628.
Which package variants are offered for LMP2021MF/NOPB?
The LMP2021MF/NOPB is exclusively available in the 5-pin SOT-23 (DBV) package, with nominal body dimensions of 2.90 mm × 1.60 mm. Unlike the dual-channel LMP2022, the LMP2021MF/NOPB is not offered in SOIC or VSSOP packages. This compact footprint supports high-density PCB layouts in portable instrumentation and space-constrained sensor modules, while maintaining full electrical performance equivalence to larger-package versions of the same die.
Can LMP2021MF/NOPB operate from a 2.5 V single supply?
Yes, the LMP2021MF/NOPB is fully specified for operation from 2.2 V to 5.5 V single supply. At 2.5 V, it maintains ±5 µV max input offset voltage, 1.1 mA supply current, and 260 nVPP (0.1–10 Hz) input noise - identical DC precision to 5 V operation. Common-mode input range extends from −0.2 V to 1.7 V, and output swing remains functional within 70 mV of each rail. These parameters are validated in Section 6.5 of the official datasheet and make the LMP2021MF/NOPB ideal for coin-cell and Li-ion battery-powered systems.
LMP2021MF/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LMP®
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Zero-Drift
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 2.6V/µs
- Gain Bandwidth Product:
- 5 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 25 pA
- Voltage - Input Offset:
- 0.4 µV
- Current - Supply:
- 1.1mA
- Current - Output / Channel:
- 50 mA
- Voltage - Supply Span (Min):
- 2.2 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
LMP2021MF/NOPB FAQ
1.How can I place an order for LMP2021MF/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMP2021MF/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 LMP2021MF/NOPB reliable?
The price and inventory of LMP2021MF/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMP2021MF/NOPB is usually 5 days.
3.What payment methods are accepted for LMP2021MF/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMP2021MF/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMP2021MF/NOPB?
LMP2021MF/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMP2021MF/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 LMP2021MF/NOPB?
For technical support, including LMP2021MF/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMP2021MF/NOPB requirements.
6.How does Aetrix verify that LMP2021MF/NOPB is sourced from the original manufacturer or authorized distributors?
All LMP2021MF/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 LMP2021MF/NOPB meets industry standards.
7.What is the process for return or replacement of LMP2021MF/NOPB?
All LMP2021MF/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMP2021MF/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 LMP2021MF/NOPB part is unused and in its original packaging.
Return procedure for LMP2021MF/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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