My Inquiry
My Account
Texas Instruments LMP2231BMFE/NOPB
- Part No.:
- LMP2231BMFE/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LMP2231BMFE/NOPB.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:6,284
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LMP2231BMFE/NOPB from Texas Instruments is a single micropower precision operational amplifier with CMOS inputs, designed for ultra-low-power sensor interface and instrumentation applications. It delivers 10 µA supply current, ±150 µV max input offset voltage, ±2.5 µV/°C max offset drift (B-grade), rail-to-rail output swing within 15 mV of rails, and operates from 1.6V to 5.5V - enabling high-accuracy signal conditioning in battery-powered medical devices and strain gauge bridges.
For engineers reviewing the LMP2231BMFE/NOPB datasheet, LMP2231BMFE/NOPB pinout, LMP2231BMFE/NOPB application, or LMP2231BMFE/NOPB equivalent, key selection criteria include its guaranteed 2.5 µV/°C TCVOS (B-grade), 20 fA input bias current, 130 kHz gain-bandwidth product at 5V, 60 nV/√Hz input voltage noise at 1 kHz, and operation down to 1.6V supply - all validated across –40°C to +125°C.
Technical Context
The LMP2231BMFE/NOPB uses a CMOS input stage enabling femtoampere-level input bias current and high input impedance, critical for interfacing with high-impedance sensors like thermocouples and piezoresistive bridges. Its micropower architecture maintains precision performance (e.g., 120 dB PSRR, 97 dB CMRR) while consuming only 16 µW at 1.6V, supporting long-life operation in portable systems.
It features rail-to-rail output with 15 mV headroom at full load, common-mode input range extending 200 mV below V–, and stable unity-gain operation with 20 pF capacitive load - making it suitable for single-supply, ground-sensing configurations without level-shifting circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current | 10 µA typical - enables >1-year battery life in coin-cell-powered sensor nodes. |
| Input Offset Voltage | ±150 µV max - ensures ≤0.015% error in 1V full-scale bridge amplifier circuits. |
| TCVOS (B-grade) | ±2.5 µV/°C max - limits drift to <0.3 µV over 0–50°C ambient range in medical thermistor interfaces. |
| Input Bias Current | ±20 fA typical - prevents >1 mV error when driving 100 MΩ source impedances. |
| Gain-Bandwidth Product | 130 kHz at 5V - supports stable DC-coupled amplification up to ~10 kHz with gain ≥10. |
| Output Swing | Rail-to-rail with ≤15 mV headroom - maximizes dynamic range in 1.8V–3.3V microcontroller ADC front-ends. |
| Input Voltage Noise | 60 nV/√Hz at 1 kHz - preserves SNR in low-frequency (<10 Hz) biopotential sensing paths. |
Pinout & Package
Package: 5-Pin SOT-23 (DBV0005A). Compact footprint ideal for space-constrained wearable and implantable sensor modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - V+ | Positive Supply | Accepts 1.6V–5.5V; decoupling capacitor required within 1 cm for stability. |
| 2 - IN− | Inverting Input | High-impedance CMOS node; sensitive to PCB leakage - guard ring recommended. |
| 3 - IN+ | Non-inverting Input | Matches IN− in bias current and capacitance; used for reference or sensor connection. |
| 4 - V− | Negative Supply / Ground | Supports true ground-sensing: common-mode range extends 200 mV below this pin. |
| 5 - OUT | Amplifier Output | Rail-to-rail capable; drives ≥10 kΩ loads directly; stable with 20 pF capacitive load. |
Key Features
| Feature | Design Value |
|---|---|
| Micropower Operation | 10 µA supply current at 1.6V enables multi-year operation on CR2032 batteries in wireless sensor transmitters. |
| B-Grade Precision | Guaranteed ±2.5 µV/°C TCVOS and ±150 µV VOS support uncalibrated industrial temperature measurement accuracy to ±0.1°C. |
| Ultra-Low Input Bias | 20 fA typical bias current avoids loading effects in pH electrode and photodiode transimpedance stages. |
| Rail-to-Rail Output | Swings within 15 mV of V+ and V− at 10 kΩ load - eliminates need for dual supplies in 3.3V data acquisition systems. |
| Wide Supply Range | 1.6V minimum operation allows direct use with LiFePO₄ (2.0–3.6V) and alkaline (1.6–1.8V) primary cells. |
Applications
| Strain Gauge Bridge Amplifier | Portable ECG Front-End |
|---|---|
Use Scenario: Amplifying mV-level differential output from quarter-bridge load cells in handheld torque meters. IC Role / Device Role / Timing Role: Precision instrumentation amplifier core with fixed-gain configuration and low-noise DC coupling. Use Value: 20 fA input bias prevents zero-drift errors from bridge resistor imbalance; 150 µV VOS enables <0.05% full-scale linearity without trimming. |
Use Scenario: Biopotential signal conditioning in battery-powered Holter monitors with 3.3V MCU and 12-bit ADC. IC Role / Device Role / Timing Role: First-stage gain and DC-blocking integrator in analog front-end before ADC sampling. Use Value: 1.6V operation extends runtime on two AA cells; 60 nV/√Hz noise preserves QRS complex fidelity at 10–25 Hz bandwidth. |
| Thermocouple Interface | Low-Voltage Sensor Node |
Use Scenario: Cold-junction compensation and amplification of Type-K thermocouple outputs (≈41 µV/°C) in industrial process controllers. IC Role / Device Role / Timing Role: High-input-impedance buffer and precision gain stage with programmable offset correction. Use Value: ±2.5 µV/°C TCVOS ensures <0.5°C measurement error over 0–100°C ambient range without calibration. |
Use Scenario: Signal conditioning for MEMS pressure sensors in IoT environmental nodes powered by energy harvesters (1.8–2.5V). IC Role / Device Role / Timing Role: Low-quiescent amplifier in always-on wake-up path with sub-µA sleep current. Use Value: 10 µA supply current allows continuous monitoring at <1 µW power budget; rail-to-rail output matches 2.0V ADC reference. |
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 VOS (10 µV max), higher supply current (17 µA), same 1.8V min supply. | Better DC accuracy but higher power; less suitable for multi-year battery life. | Choose OPA333AIDBVR when VOS-critical DC gain stability outweighs micropower needs. |
| MAX40007AXT+T | Higher GBW (400 kHz), higher supply current (35 µA), wider temp range (–40°C to +150°C). | Superior AC response for fast transient sensing; not optimized for ultra-low IQ. | Choose MAX40007AXT+T when bandwidth >200 kHz is required and 35 µA supply is acceptable. |
Compared with LMP2231BMFE/NOPB, OPA333AIDBVR trades 7 µA extra quiescent current for 140 µV lower VOS, while MAX40007AXT+T doubles bandwidth at 2.5× supply current - making LMP2231BMFE/NOPB optimal for ultra-low-power, moderate-bandwidth precision sensing where long battery life is mandatory.
Availability
LMP2231BMFE/NOPB is available at Aetrix Electronics and suitable for battery-powered medical instrumentation, precision instrumentation amplifiers, high-impedance sensor interfaces, and strain gauge bridge amplifiers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LMP2231BMFE/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 expertise in precision signal chain solutions.
The LMP™ precision amplifier family - including LMP2231BMFE/NOPB - was engineered specifically for ultra-low-power, high-accuracy sensor signal conditioning in portable and industrial instrumentation systems.
FAQ
What is the guaranteed input offset voltage specification for LMP2231BMFE/NOPB?
The LMP2231BMFE/NOPB has a maximum input offset voltage of ±150 µV across temperature (–40°C to +125°C), as specified in the Electrical Characteristics table under "5V DC Electrical Characteristics." This value applies to the B-grade variant and is tested and ensured per TI's production test flow.
Does LMP2231BMFE/NOPB support rail-to-rail input operation?
No, LMP2231BMFE/NOPB does not support rail-to-rail input. Its common-mode input voltage range extends 200 mV below V– and up to V+ − 1.2 V (at 5V supply), as confirmed in the "Common Mode Voltage Range" parameter. However, it does provide rail-to-rail output swing within 15 mV of both rails.
What package type is used for LMP2231BMFE/NOPB?
LMP2231BMFE/NOPB is supplied in a 5-pin SOT-23 package (TI package code DBV0005A), with pin 1 = V+, pin 2 = IN−, pin 3 = IN+, pin 4 = V−, and pin 5 = OUT - verified via the Connection Diagram (Figure 2) in the official SNOSB01E datasheet.
Can LMP2231BMFE/NOPB operate from a 1.6V supply?
Yes, LMP2231BMFE/NOPB is fully specified to operate from 1.6V to 5.5V supply voltage, as stated in both the "Features" and "Operating Ratings" sections. At 1.6V, it maintains 10 µA supply current, 127 kHz GBW, and functional rail-to-rail output - validated in the 1.8V and 2.5V electrical characteristics tables.
What is the input bias current of LMP2231BMFE/NOPB at 25°C?
The typical input bias current of LMP2231BMFE/NOPB is ±20 fA at 25°C, with a maximum of ±50 fA across temperature, as documented in the "DC Electrical Characteristics" tables for all supply voltages (1.8V–5V). This ultra-low value results from its CMOS input architecture.
LMP2231BMFE/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LMP®, PowerWise®
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.058V/µs
- Gain Bandwidth Product:
- 130 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.02 pA
- Voltage - Input Offset:
- 10 µV
- Current - Supply:
- 10µA
- Current - Output / Channel:
- 30 mA
- Voltage - Supply Span (Min):
- 1.6 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
LMP2231BMFE/NOPB FAQ
1.How can I place an order for LMP2231BMFE/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMP2231BMFE/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 LMP2231BMFE/NOPB reliable?
The price and inventory of LMP2231BMFE/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMP2231BMFE/NOPB is usually 5 days.
3.What payment methods are accepted for LMP2231BMFE/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMP2231BMFE/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMP2231BMFE/NOPB?
LMP2231BMFE/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMP2231BMFE/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 LMP2231BMFE/NOPB?
For technical support, including LMP2231BMFE/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMP2231BMFE/NOPB requirements.
6.How does Aetrix verify that LMP2231BMFE/NOPB is sourced from the original manufacturer or authorized distributors?
All LMP2231BMFE/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 LMP2231BMFE/NOPB meets industry standards.
7.What is the process for return or replacement of LMP2231BMFE/NOPB?
All LMP2231BMFE/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMP2231BMFE/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 LMP2231BMFE/NOPB part is unused and in its original packaging.
Return procedure for LMP2231BMFE/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LMP2231BMFE/NOPB Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
