My Inquiry
My Account
Texas Instruments LMP2231BMAE/NOPB
- Part No.:
- LMP2231BMAE/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LMP2231BMAE/NOPB.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:210
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LMP2231BMAE/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 operates from 1.6V to 5.5V, draws only 10 µA supply current, delivers rail-to-rail output swing within 15 mV of either rail, and maintains ±150 µV max input offset voltage with ±2.5 µV/°C max drift - enabling high-accuracy signal conditioning in battery-powered medical devices and strain gauge amplifiers.
For engineers reviewing the LMP2231BMAE/NOPB datasheet, LMP2231BMAE/NOPB pinout, LMP2231BMAE/NOPB application, or LMP2231BMAE/NOPB equivalent, key selection criteria include its 20 fA input bias current, 130 kHz gain-bandwidth product, 60 nV/√Hz input voltage noise at 1 kHz, –40°C to 125°C operating temperature range, and compatibility with 1.8V–5.5V single-supply systems requiring ground-sensing capability.
Technical Context
The LMP2231BMAE/NOPB implements a CMOS-input stage with ultra-low input bias current (±20 fA typical), enabling direct interfacing with high-impedance sensors such as thermocouples and piezoresistive bridges without significant signal loss. Its precision architecture includes laser-trimmed input offset voltage and low TCVOS (±2.5 µV/°C max) to ensure long-term stability across industrial temperature ranges.
It features rail-to-rail output drive capable of sourcing/sinking up to 30 mA (at 5V), supports common-mode input down to 200 mV below V–, and maintains 120 dB PSRR and 97 dB CMRR - making it suitable for noisy single-supply environments where power supply rejection and common-mode immunity are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current | 10 µA typical - enables multi-year battery life in portable instrumentation and wearable medical sensors. |
| Input Offset Voltage | ±150 µV max - ensures <0.015% error in 1V full-scale measurements without calibration. |
| Offset Voltage Drift | ±2.5 µV/°C max - limits thermal drift to <0.3 mV over 120°C industrial temperature span. |
| Input Bias Current | ±20 fA typical - preserves signal integrity when amplifying outputs from >1 GΩ impedance sources. |
| Gain-Bandwidth Product | 130 kHz - supports stable DC-coupled amplification of low-frequency sensor signals (e.g., strain gauges, thermocouples). |
| Rail-to-Rail Output | Swings within 15 mV of V+ and V– - maximizes dynamic range in 1.8V–5.5V single-supply systems. |
| Operating Temperature | –40°C to +125°C - qualified for automotive under-hood, industrial control, and medical diagnostic equipment. |
Pinout & Package
Package: 5-pin SOT-23 (DBV0005A), surface-mount, footprint-compatible with industry-standard 5-pin op-amp layouts.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | V+ | Positive supply input - accepts 1.6V to 5.5V; decoupling capacitor required for stability. |
| 2 | VIN– | Inverting input - high-impedance CMOS node; sensitive to PCB leakage and ESD. |
| 3 | VIN+ | Non-inverting input - matched to VIN– for optimal common-mode rejection and offset performance. |
| 4 | V– | Negative supply / ground reference - supports operation with V– at 0V (single-supply) or negative potential. |
| 5 | VOUT | Amplified output - rail-to-rail capable; drives loads ≥10 kΩ directly or ≥1 kΩ with external compensation. |
Key Features
| Feature | Design Value |
|---|---|
| Micropower Operation | 10 µA supply current at 5V - reduces quiescent power to 16 µW, extending coin-cell battery life beyond 10 years in sleep-mode sensing. |
| Ultra-Low Input Bias Current | 20 fA typical - eliminates loading errors in pH electrodes, photodiode transimpedance stages, and high-Z bridge sensors. |
| Precision DC Performance | ±150 µV VOS and ±2.5 µV/°C TCVOS - enables factory-calibration-free designs for Class I medical instrumentation per IEC 60601-2-51. |
| Rail-to-Rail Output | 15 mV from rails at 10 kΩ load - delivers full-scale analog range in 2.0V and 3.3V microcontroller ADC interfaces. |
| Wide Supply Range | 1.6V to 5.5V operation - supports direct integration with Li-ion, alkaline, and supercapacitor power sources without regulators. |
Applications
| Precision Instrumentation Amplifiers | Battery-Powered Medical Instrumentation |
|---|---|
Use Scenario: High-gain, low-noise front-end for portable ECG monitors and blood glucose meters. IC Role / Device Role / Timing Role: Primary signal-conditioning amplifier in a 3-op-amp instrumentation topology, rejecting electrode motion artifacts. Use Value: 20 fA input bias current prevents baseline drift from skin-electrode interface impedance (>1 MΩ), while 60 nV/√Hz noise preserves QRS complex fidelity. |
Use Scenario: Analog front-end for handheld pulse oximeters and wearable respiration sensors. IC Role / Device Role / Timing Role: Transimpedance amplifier converting photodiode current to voltage, followed by DC-coupled gain stage. Use Value: 1.6V minimum supply allows direct operation from single AAA cell; rail-to-rail output ensures full utilization of 12-bit ADC input range. |
| High-Impedance Sensors | Strain Gauge Bridge Amplifier |
Use Scenario: Signal conditioning for MEMS accelerometers and capacitive humidity sensors with >100 MΩ source impedance. IC Role / Device Role / Timing Role: Buffer and gain stage isolating high-Z sensor element from downstream filtering and digitization circuitry. Use Value: 20 fA input bias current avoids measurement error >1% at 100 MΩ source impedance; 120 dB PSRR rejects switching regulator noise. |
Use Scenario: Wheatstone bridge amplifier in industrial load cells and torque sensors. IC Role / Device Role / Timing Role: First-stage differential amplifier with fixed gain, referenced to bridge excitation voltage. Use Value: ±150 µV VOS contributes <0.03% full-scale error in 50 mV/V bridge output; common-mode input range extends 200 mV below ground for true ground-sensing. |
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) but higher supply current (17 µA); same 5-pin SOT-23 package. | Better DC accuracy for zero-drift-critical applications; less suitable for ultra-long-life battery use. | Select OPA333AIDBVR when sub-µV drift and chopper-stabilized performance outweigh micropower needs. |
| MAX44260ASA+T | Higher supply current (35 µA), wider GBW (500 kHz), and integrated shutdown - different 8-pin SOIC package. | Supports higher-speed sensor interfaces and active power management; requires PCB redesign. | Choose MAX44260ASA+T when system demands >200 kHz bandwidth or programmable enable control. |
Compared with OPA333AIDBVR and MAX44260ASA+T, the LMP2231BMAE/NOPB uniquely balances ultra-low power (10 µA), precision (±150 µV VOS), and ground-sensing capability in a 5-pin SOT-23 - making it optimal for space-constrained, battery-operated instrumentation where longevity and DC accuracy are co-prioritized.
Availability
LMP2231BMAE/NOPB is available at Aetrix Electronics and suitable for precision instrumentation amplifiers, battery-powered medical instrumentation, and high-impedance sensor interfaces requiring stable component supply across extended production lifecycles.
Supply support for LMP2231BMAE/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 low-power signal-chain solutions.
The LMP™ precision amplifier family, including the LMP2231BMAE/NOPB, was engineered specifically for battery-powered instrumentation and sensor interface applications demanding micropower operation, rail-to-rail output, and robust DC accuracy across wide temperature ranges.
FAQ
What is the maximum operating supply voltage for the LMP2231BMAE/NOPB?
The LMP2231BMAE/NOPB has an absolute maximum supply voltage of 6V, but its specified operating range is 1.6V to 5.5V. Operation at 5.5V is fully characterized across temperature and ensures all electrical specifications - including PSRR, CMRR, and output swing - remain within guaranteed limits. Exceeding 5.5V may cause parametric degradation or reliability risk.
Does the LMP2231BMAE/NOPB support true ground-sensing input operation?
Yes, the LMP2231BMAE/NOPB supports true ground-sensing: its common-mode input voltage range extends 200 mV below the negative supply rail (V–). When V– = 0V (single-supply configuration), this allows inputs down to –200 mV, enabling accurate amplification of signals referenced to system ground - critical for bridge sensors and current-sense applications.
What is the guaranteed input offset voltage specification for LMP2231BMAE/NOPB?
The LMP2231BMAE/NOPB is the "B-grade" variant, with a maximum input offset voltage of ±150 µV at TA = 25°C and VS = 5V. This limit applies across the full operating temperature range (–40°C to +125°C) per TI's production test conditions, ensuring consistent DC accuracy in industrial and automotive environments without recalibration.
Can the LMP2231BMAE/NOPB drive capacitive loads directly?
The LMP2231BMAE/NOPB is stable with capacitive loads up to 20 pF when driving a 10 kΩ load, as verified in the datasheet's phase margin plots. For larger capacitive loads (e.g., ADC input capacitance >20 pF), an isolation resistor (≥100 Ω) must be placed in series with the output to maintain stability and prevent peaking or oscillation.
Is the LMP2231BMAE/NOPB RoHS-compliant and lead-free?
Yes, the LMP2231BMAE/NOPB is RoHS-compliant and lead-free. The "/NOPB" suffix explicitly denotes lead-free packaging per JEDEC J-STD-609, and the device meets TI's green chemistry requirements including exemption 7a (lead in high-melting-temperature solder alloys). Full compliance documentation is available in TI's PCN archives.
LMP2231BMAE/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LMP®, PowerWise®
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- 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:
- 8-SOIC
LMP2231BMAE/NOPB FAQ
1.How can I place an order for LMP2231BMAE/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMP2231BMAE/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 LMP2231BMAE/NOPB reliable?
The price and inventory of LMP2231BMAE/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMP2231BMAE/NOPB is usually 5 days.
3.What payment methods are accepted for LMP2231BMAE/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMP2231BMAE/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMP2231BMAE/NOPB?
LMP2231BMAE/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMP2231BMAE/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 LMP2231BMAE/NOPB?
For technical support, including LMP2231BMAE/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMP2231BMAE/NOPB requirements.
6.How does Aetrix verify that LMP2231BMAE/NOPB is sourced from the original manufacturer or authorized distributors?
All LMP2231BMAE/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 LMP2231BMAE/NOPB meets industry standards.
7.What is the process for return or replacement of LMP2231BMAE/NOPB?
All LMP2231BMAE/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMP2231BMAE/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 LMP2231BMAE/NOPB part is unused and in its original packaging.
Return procedure for LMP2231BMAE/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LMP2231BMAE/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…
