My Inquiry
My Account
Texas Instruments LMP2231AMAE/NOPB
- Part No.:
- LMP2231AMAE/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LMP2231AMAE/NOPB.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,776
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LMP2231AMAE/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 ±150 µV max input offset voltage and ±0.4 µV/°C max offset drift (Grade A), and features rail-to-rail output swing within 15 mV of either rail - enabling high-accuracy signal conditioning in battery-powered medical devices and strain gauge bridges.
For engineers reviewing the LMP2231AMAE/NOPB datasheet, LMP2231AMAE/NOPB pinout, LMP2231AMAE/NOPB application, or LMP2231AMAE/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 single-supply ground-sensing configurations.
Technical Context
The LMP2231AMAE/NOPB employs a CMOS input stage delivering femtoampere-level input bias current and high input impedance, making it suitable for interfacing with high-impedance sensors such as thermocouples and piezoresistive elements. Its precision architecture includes laser-trimmed input offset and low-drift design, ensuring long-term stability without external calibration.
It supports rail-to-rail output operation with 15 mV headroom to both rails and a common-mode input range extending 200 mV below the negative supply - enabling true single-supply operation down to 1.6V. The device maintains 120 dB PSRR and 97 dB CMRR across its full supply and temperature range, critical for noisy industrial or portable environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current | 10 µA typical - enables multi-year battery life in coin-cell–powered devices like wearable biosensors. |
| Input Offset Voltage | ±150 µV max - reduces DC error in precision gain stages without trimming components. |
| Offset Voltage Drift | ±0.4 µV/°C max (Grade A) - ensures <1 µV total drift over 0–70°C ambient, critical for unattended field instrumentation. |
| Input Bias Current | ±20 fA typical - prevents loading errors in >1 GΩ source impedances (e.g., pH electrodes, photodiode transimpedance amps). |
| Gain-Bandwidth Product | 130 kHz - supports stable closed-loop gains up to ~100× at DC–1 kHz for low-frequency sensor signals. |
| Output Swing | Rail-to-rail with ≤15 mV headroom - maximizes dynamic range in 3.3V or lower ADC reference systems. |
| Operating Temperature | −40°C to +125°C - qualified for automotive cabin, industrial control, and extended-life medical equipment. |
Pinout & Package
Package: 5-pin SOT-23 (DBV0005A). Compact footprint (2.9 mm × 1.6 mm) optimized for space-constrained portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - V+ | Positive Supply Rail | Accepts 1.6V–5.5V; decoupling capacitor required near pin for stability. |
| 2 - IN− | Inverting Input | High-impedance CMOS node; sensitive to PCB leakage and ESD - guard ring recommended. |
| 3 - IN+ | Non-Inverting Input | Matches IN− in bias current and offset; used for reference or sensor connection in differential configurations. |
| 4 - V− | Negative Supply Rail / Ground | Supports single-supply operation; common-mode range extends 200 mV below this pin. |
| 5 - OUT | Amplifier Output | Rail-to-rail capable; drives ≥10 kΩ loads; limited sourcing/sinking current at low supply voltages. |
Key Features
| Feature | Design Value |
|---|---|
| Micropower Operation | 10 µA supply current at 5V - enables continuous monitoring in energy-harvesting or battery-backed systems. |
| Precision Offset Performance | ±150 µV max VOS and ±0.4 µV/°C max TCVOS (Grade A) - eliminates need for system-level offset correction in Class I medical devices. |
| Ultra-Low Input Bias Current | 20 fA typical - preserves signal integrity when amplifying nanoamp-level currents from electrochemical or radiation sensors. |
| Rail-to-Rail Output | Swings within 15 mV of V+ and V− - increases usable ADC input range by >30% vs. legacy op-amps in 3.3V systems. |
| Wide Supply Range | 1.6V to 5.5V operation - interoperable with Li-ion, coin-cell, and regulated 3.3V/2.5V rails without level-shifting. |
Applications
| Strain Gauge Bridge Amplifier | Portable ECG Front-End |
|---|---|
Use Scenario: Amplification of millivolt-level differential output from full-bridge strain gauges in handheld torque meters or load cells. IC Role / Device Role / Timing Role: Precision instrumentation amplifier core (configured as difference amplifier) with high CMRR and low noise. Use Value: 20 fA input bias avoids bridge imbalance errors; 60 nV/√Hz noise preserves microvolt-level signal resolution at 1–10 Hz. |
Use Scenario: Low-noise, low-power amplification of biopotential signals (0.5–100 Hz) in battery-operated ECG patches. IC Role / Device Role / Timing Role: First-stage gain and filtering amplifier in analog front-end, operating from 3.0V coin cell. Use Value: 10 µA quiescent current extends battery life beyond 12 months; rail-to-rail output fully utilizes 12-bit ADC input range. |
| Thermocouple Signal Conditioning | High-Impedance pH Sensor Interface |
Use Scenario: Cold-junction compensation and amplification of µV/°C thermocouple outputs in industrial temperature transmitters. IC Role / Device Role / Timing Role: Precision voltage follower and gain stage with low thermal EMF inputs. Use Value: ±0.4 µV/°C drift minimizes temperature-induced gain error; 120 dB PSRR rejects power-supply ripple in 24V loop-powered systems. |
Use Scenario: Buffering and amplification of high-impedance (>1 GΩ) glass electrode outputs in portable pH meters. IC Role / Device Role / Timing Role: Unity-gain buffer isolating electrode from downstream circuitry. Use Value: 20 fA input bias prevents polarization of pH electrode; CMOS inputs avoid leakage-induced drift during 60-second measurements. |
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 offset (±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 sub-10 µA ultra-low-power designs. | Select OPA333AIDBVR when offset voltage dominates error budget and supply current margin exists. |
| LTC2050CS5#TRMPBF | Zero-drift architecture; 50 nV/°C max drift, 1.5 µA supply current; 5-pin TSOT-23 package. | Superior long-term drift performance but limited 2.7–6V supply range and no 1.6V operation. | Select LTC2050CS5#TRMPBF for applications requiring <50 nV/°C drift over 10-year lifetime, accepting higher cost and narrower supply range. |
Compared with OPA333AIDBVR and LTC2050CS5#TRMPBF, the LMP2231AMAE/NOPB uniquely balances ultra-low supply current (10 µA), 1.6V minimum operation, and Grade A drift (±0.4 µV/°C) - making it optimal for long-life, wide-voltage, battery-constrained precision sensing where zero-drift isn't mandatory.
Availability
LMP2231AMAE/NOPB is available at Aetrix Electronics and suitable for battery-powered medical instrumentation, precision instrumentation amplifiers, and high-impedance sensor interfaces requiring stable component supply and guaranteed long-term availability.
Supply support for LMP2231AMAE/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 signal chain solutions.
The LMP™ precision amplifier family - including the LMP2231AMAE/NOPB - was engineered specifically for micropower, high-accuracy sensor signal conditioning in portable and industrial measurement systems.
FAQ
What is the maximum operating supply voltage for the LMP2231AMAE/NOPB?
The LMP2231AMAE/NOPB has an absolute maximum supply voltage of 6V, but its specified operating range is 1.6V to 5.5V. Operation above 5.5V risks permanent damage and invalidates parametric guarantees. At 5.5V, the device maintains full specification compliance including 120 dB PSRR and rail-to-rail output swing.
Does the LMP2231AMAE/NOPB support true single-supply operation with input signals referenced to ground?
Yes. The LMP2231AMAE/NOPB's common-mode input voltage range extends 200 mV below the negative supply rail (V−), allowing ground-referenced inputs when V− = 0V. This enables direct interface with grounded sensors like thermocouples or resistive bridges without level-shifting circuitry.
How does the LMP2231AMAE/NOPB achieve its 20 fA input bias current specification?
The LMP2231AMAE/NOPB uses a CMOS input stage with guarded, low-leakage gate structures and on-die ESD protection optimized for minimal gate leakage. Measured input bias current remains ≤20 fA across −40°C to 125°C and full common-mode range, verified per TI's production test flow using femtoampere-sensitive metrology.
Is the LMP2231AMAE/NOPB pin-compatible with other members of the LMP223x family?
No. The LMP2231AMAE/NOPB is a single-channel device in 5-pin SOT-23. The dual LMP2232 and quad LMP2234 use different pinouts and packages (8-pin SOIC/VSSOP and 14-pin SOIC/TSSOP). Pin compatibility exists only within same-channel-count variants - e.g., LMP2231AMAE/NOPB and LMP2231AMA/NOPB share identical pinout.
What is the guaranteed output drive capability of the LMP2231AMAE/NOPB at 1.8V supply?
At V+ = 1.8V and TA = 25°C, the LMP2231AMAE/NOPB guarantees ±2.5 mA output sourcing/sinking current into 10 kΩ loads. Output swing remains within 50 mV of each rail under these conditions. Drive capability decreases at temperature extremes and lower supply voltages due to reduced internal bias headroom.
LMP2231AMAE/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
LMP2231AMAE/NOPB FAQ
1.How can I place an order for LMP2231AMAE/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMP2231AMAE/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 LMP2231AMAE/NOPB reliable?
The price and inventory of LMP2231AMAE/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMP2231AMAE/NOPB is usually 5 days.
3.What payment methods are accepted for LMP2231AMAE/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMP2231AMAE/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMP2231AMAE/NOPB?
LMP2231AMAE/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMP2231AMAE/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 LMP2231AMAE/NOPB?
For technical support, including LMP2231AMAE/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMP2231AMAE/NOPB requirements.
6.How does Aetrix verify that LMP2231AMAE/NOPB is sourced from the original manufacturer or authorized distributors?
All LMP2231AMAE/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 LMP2231AMAE/NOPB meets industry standards.
7.What is the process for return or replacement of LMP2231AMAE/NOPB?
All LMP2231AMAE/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMP2231AMAE/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 LMP2231AMAE/NOPB part is unused and in its original packaging.
Return procedure for LMP2231AMAE/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LMP2231AMAE/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…
