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Texas Instruments LMP2232AMAE/NOPB
- Part No.:
- LMP2232AMAE/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LMP2232AMAE/NOPB.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:433
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Product details
Overview
LMP2232AMAE/NOPB from Texas Instruments is a dual micropower precision operational amplifier with CMOS input, rail-to-rail output, and 1.6V to 5.5V single-supply operation. It delivers ±150 µV max input offset voltage, ±0.5 µV/°C max drift, 20 fA input bias current, 130 kHz gain-bandwidth product, and operates across –40°C to +125°C - ideal for high-accuracy sensor front-ends in portable medical instrumentation.
For engineers reviewing the LMP2232AMAE/NOPB datasheet, LMP2232AMAE/NOPB pinout, LMP2232AMAE/NOPB application, or LMP2232AMAE/NOPB equivalent, key selection criteria include ultra-low quiescent current (16 µA at 1.8V), rail-to-rail output swing within 15 mV of supply rails, CMOS input enabling high-impedance bridge sensing, and guaranteed performance over extended temperature and low-voltage conditions.
Technical Context
The LMP2232AMAE/NOPB uses a CMOS input stage to achieve femtoampere-level input bias current and supports common-mode input down to 200 mV below the negative rail - enabling true ground-sensing in single-supply systems. Its rail-to-rail output stage delivers full dynamic range with only 14–17 mV headroom at 1.8–5V supplies.
It features internal compensation for unity-gain stability with capacitive loads up to 100 pF, maintains 120 dB open-loop gain and 97 dB CMRR across temperature, and achieves 60 nV/√Hz input voltage noise at 1 kHz - optimized for low-frequency precision signal conditioning without external filtering overhead.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.6V to 5.5V - enables direct operation from single Li-ion, coin cell, or regulated 3.3V/2.5V rails without level-shifting. |
| Quiescent Current (per channel) | 16 µA at 1.8V - extends battery life in always-on wearable sensors and implantable monitors. |
| Input Offset Voltage (max) | ±150 µV - reduces calibration burden in 16-bit+ data acquisition systems using strain gauges or thermocouples. |
| Offset Drift (max) | ±0.5 µV/°C - ensures <1 µV total drift over 0–70°C ambient, critical for unattended field instrumentation. |
| Input Bias Current (max) | ±20 fA - preserves signal integrity when interfacing >1 GΩ pH electrodes or piezoresistive MEMS sensors. |
| Gain-Bandwidth Product | 130 kHz - sufficient for DC–10 kHz sensor signal bandwidths while maintaining phase margin >60° with 20 pF load. |
| Output Swing (from rail) | 12–17 mV - maximizes usable ADC input range in 12–16-bit SAR converters powered from same supply. |
Pinout & Package
Package: 8-pin VSSOP (DGK0008A), 2.3 mm × 2.0 mm, 0.5 mm pitch - suitable for space-constrained portable PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (Channel A) | High-impedance CMOS node; connects directly to feedback network or sensor bridge leg without guard traces. |
| 2 | Non-Inverting Input (Channel A) | Accepts low-current sensor signals (e.g., thermocouple, RTD) with minimal loading error. |
| 3 | Output (Channel A) | Rail-to-rail capable; drives 10 kΩ loads to within 15 mV of V+ or GND at 25°C. |
| 4 | GND | Analog ground reference; must be star-connected to minimize PSRR degradation from digital noise coupling. |
| 5 | Non-Inverting Input (Channel B) | Independent high-Z input; enables dual-sensor differential measurement without shared reference errors. |
| 6 | Inverting Input (Channel B) | Matches Channel A electrical characteristics; supports matched gain-setting resistor networks. |
| 7 | Output (Channel B) | Electrically isolated output path; allows independent buffering of two sensor channels on one die. |
| 8 | V+ | Positive supply pin; accepts 1.6–5.5V; decoupling capacitor (0.1 µF) required within 2 mm for stability. |
Key Features
| Feature | Design Value |
|---|---|
| Micropower operation | 16 µA per channel at 1.8V enables >5-year battery life in coin-cell-powered IoT nodes. |
| CMOS input stage | 20 fA max input bias current eliminates voltage error across 10 MΩ source impedances. |
| Rail-to-rail output | Swings to within 15 mV of V+ and GND - preserves full-scale resolution in low-voltage ADC interfaces. |
| Extended temperature range | Specified from –40°C to +125°C - qualified for automotive cabin and industrial motor-control environments. |
| Low 1/f noise | 2.3 µVPP integrated 0.1–10 Hz noise - minimizes baseline drift in ECG and pressure transducer amplifiers. |
Applications
| Precision Instrumentation Amplifiers | Battery-Powered Medical Instrumentation |
|---|---|
Use Scenario: High-gain, low-noise amplification of microvolt-level signals from Wheatstone bridges in portable load cells and torque sensors. IC Role / Device Role / Timing Role: Primary gain stage with matched dual channels enabling differential input rejection and common-mode suppression. Use Value: ±150 µV VOS and ±0.5 µV/°C TCVOS reduce system calibration frequency; rail-to-rail output maximizes dynamic range into 16-bit ADCs. |
Use Scenario: Front-end amplification in handheld ECG monitors and glucose meters operating from CR2032 batteries. IC Role / Device Role / Timing Role: Sensor interface amplifier providing stable DC-coupled gain with ultra-low power consumption. Use Value: 16 µA supply current per channel extends battery life beyond 2 years; 20 fA input bias prevents electrode polarization errors. |
| High-Impedance Sensors | Strain Gauge Bridge Amplifier |
Use Scenario: Signal conditioning for pH electrodes, ion-selective sensors, and MEMS capacitive pressure transducers. IC Role / Device Role / Timing Role: Buffer and gain stage preserving signal integrity from GΩ-range sources without loading. Use Value: CMOS input eliminates bias current-induced offset; 120 dB PSRR rejects supply ripple from switching regulators. |
Use Scenario: Amplifying millivolt outputs from quarter-bridge strain gauges in structural health monitoring devices. IC Role / Device Role / Timing Role: Precision instrumentation amplifier core (with external resistors) delivering 100+ dB CMRR. Use Value: 97 dB CMRR and 120 dB open-loop gain ensure accurate differential measurement despite lead resistance imbalance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2333AIDR | Higher quiescent current (17 µA vs. 16 µA), lower VOS (±10 µV typ), but narrower supply range (1.8–5.5V). | Preferred where ultra-low offset dominates over minimum supply voltage; not suitable for 1.6V coin-cell systems. | Select OPA2333AIDR when VOS < ±25 µV is mandatory and supply ≥1.8V is guaranteed. |
| MAX44260ASA+ | Lower input bias current (1 fA), wider temp range (–40°C to +125°C), but higher IS (22 µA) and no VSSOP option. | Used in ultra-high-Z electrochemical sensors requiring sub-femtoampere leakage control. | Choose MAX44260ASA+ only when input bias current <5 fA is critical and SOIC-8 footprint is acceptable. |
Compared with LMP2232AMAE/NOPB, OPA2333AIDR offers tighter offset but sacrifices 1.6V operation, while MAX44260ASA+ achieves lower bias current at the cost of higher power and larger package - making LMP2232AMAE/NOPB optimal for space- and voltage-constrained precision sensor nodes.
Availability
LMP2232AMAE/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 industrial and medical production cycles.
Supply support for LMP2232AMAE/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 LMP2232AMAE/NOPB - was engineered specifically for ultra-low-power, high-accuracy sensor signal conditioning in battery-operated and thermally demanding environments.
FAQ
What is the maximum operating supply voltage for LMP2232AMAE/NOPB?
The LMP2232AMAE/NOPB has an absolute maximum supply voltage of 6V, but its specified operating range is 1.6V to 5.5V. Operation above 5.5V voids guaranteed performance and risks permanent damage. At 5.5V, supply current remains within 28 µA per channel, and output swing stays within 50 mV of rails under 10 kΩ load.
Does LMP2232AMAE/NOPB support rail-to-rail input?
No, the LMP2232AMAE/NOPB does not support rail-to-rail input. Its common-mode input voltage range extends 200 mV below the negative supply (GND) and up to V+ − 1.2V at room temperature. For example, with V+ = 3.3V, valid input range is –0.2V to 2.1V - sufficient for ground-referenced sensor signals but not full rail coverage.
What is the guaranteed input offset voltage specification for LMP2232AMAE/NOPB?
The LMP2232AMAE/NOPB is specified with a maximum input offset voltage of ±150 µV at TA = 25°C and V+ = 5V. This limit applies across the full operating temperature range (–40°C to +125°C) for the 'A' grade variant, ensuring predictable calibration requirements in automotive and industrial applications.
Can LMP2232AMAE/NOPB drive capacitive loads?
Yes, the LMP2232AMAE/NOPB is internally compensated for stable operation with capacitive loads up to 100 pF when driving a 10 kΩ resistive load. Phase margin remains >60° at CL = 100 pF and VS = 5V. For loads >100 pF, external isolation resistor (e.g., 10 Ω in series with output) is recommended to prevent peaking or oscillation.
Is LMP2232AMAE/NOPB available in both SOIC and VSSOP packages?
Yes, LMP2232AMAE/NOPB is the VSSOP-8 (DGK) variant. The SOIC-8 version is designated LMP2232AMA/NOPB (no 'E'). Both share identical electrical specifications, but the VSSOP package measures 2.3 mm × 2.0 mm versus SOIC's 3.9 mm × 4.9 mm - critical for miniaturized PCB layouts in wearables and portable diagnostics.
LMP2232AMAE/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:
- Differential, Rail-to-Rail
- Slew Rate:
- 0.048V/µs
- Gain Bandwidth Product:
- 130 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.02 pA
- Voltage - Input Offset:
- 10 µV
- Current - Supply:
- 19µA (x2 Channels)
- 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
LMP2232AMAE/NOPB FAQ
1.How can I place an order for LMP2232AMAE/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMP2232AMAE/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 LMP2232AMAE/NOPB reliable?
The price and inventory of LMP2232AMAE/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMP2232AMAE/NOPB is usually 5 days.
3.What payment methods are accepted for LMP2232AMAE/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMP2232AMAE/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMP2232AMAE/NOPB?
LMP2232AMAE/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMP2232AMAE/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 LMP2232AMAE/NOPB?
For technical support, including LMP2232AMAE/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMP2232AMAE/NOPB requirements.
6.How does Aetrix verify that LMP2232AMAE/NOPB is sourced from the original manufacturer or authorized distributors?
All LMP2232AMAE/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 LMP2232AMAE/NOPB meets industry standards.
7.What is the process for return or replacement of LMP2232AMAE/NOPB?
All LMP2232AMAE/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMP2232AMAE/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 LMP2232AMAE/NOPB part is unused and in its original packaging.
Return procedure for LMP2232AMAE/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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