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Texas Instruments LMP2232BMA/NOPB
- Part No.:
- LMP2232BMA/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LMP2232BMA/NOPB.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,258
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Product details
Overview
LMP2232BMA/NOPB from Texas Instruments is a dual micropower precision operational amplifier with CMOS input, designed for ultra-low-power sensor interface and instrumentation applications. It delivers ±150 µV max input offset voltage, ±0.5 µV/°C max offset drift, 20 fA input bias current, rail-to-rail output swing within 15 mV of rails, and operates from 1.6V to 5.5V supply - enabling high-accuracy signal conditioning in battery-powered medical devices and strain gauge amplifiers.
For engineers reviewing the LMP2232BMA/NOPB datasheet, LMP2232BMA/NOPB pinout, LMP2232BMA/NOPB application, or LMP2232BMA/NOPB equivalent, key selection criteria include micropower operation at 1.8V (16 µA per channel), precision DC specs over –40°C to 125°C, CMOS-input high-impedance interface capability, and verified performance in single-supply ground-sensing configurations.
Technical Context
The LMP2232BMA/NOPB employs a CMOS input stage enabling femtoampere-level input bias current and wide common-mode range extending 200 mV below the negative rail. Its precision architecture achieves 120 dB open-loop gain and 97 dB CMRR at 5V, with guaranteed performance across 1.6V–5.5V supply and full industrial temperature range.
It features rail-to-rail output stage capable of sourcing/sinking ≥11 mA at 3.3V, stable with 20 pF capacitive load (66° phase margin), and low 60 nV/√Hz input voltage noise at 1 kHz - optimized for DC-critical, low-noise, low-supply applications where quiescent power must remain below 26 µW per channel.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.6V to 5.5V - supports direct operation from single-cell Li-ion, coin cell, or 3.3V/5V rails without regulation. |
| Max Input Offset Voltage | ±150 µV - ensures ≤0.003% gain error in 100 mV full-scale sensor interfaces at room temperature. |
| Max Offset Drift | ±0.5 µV/°C (LMP2232B grade) - limits drift-induced error to <0.1 mV over 100°C industrial range. |
| Input Bias Current | ±20 fA - enables use with >1 GΩ source impedances (e.g., pH electrodes, piezoresistive sensors) without significant error. |
| Supply Current per Channel | 16 µA at 1.8V - achieves 26 µW total quiescent power, extending battery life in portable instrumentation. |
| Output Swing | Rail-to-rail with ≤15 mV headroom - maximizes dynamic range in single-supply systems with 0 V reference. |
| Gain-Bandwidth Product | 130 kHz - sufficient for DC–100 Hz sensor signals (e.g., thermocouples, strain gauges) with stable unity-gain operation. |
Pinout & Package
Package: 8-pin VSSOP (DGK0008A), 3.0 mm × 3.0 mm body, 0.5 mm pitch - compact footprint for space-constrained portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (Channel A) | High-impedance CMOS node accepting differential signal; requires guarded layout for <10 fA leakage paths. |
| 2 | Non-Inverting Input (Channel A) | High-Z input referenced to system ground or bias network; supports ground-sensing down to –0.2 V. |
| 3 | Output (Channel A) | Rail-to-rail output capable of driving 10 kΩ loads within 15 mV of V+ or V−; stable with 20 pF capacitance. |
| 4 | V− (Ground/Reference) | Negative supply terminal; common return for both channels; supports operation with V− = 0 V in single-supply mode. |
| 5 | Non-Inverting Input (Channel B) | Independent high-Z input for second sensor channel; electrically isolated from Channel A inputs. |
| 6 | Inverting Input (Channel B) | Second differential input node; matched offset and drift specs ensure channel-to-channel tracking. |
| 7 | Output (Channel B) | Independent rail-to-rail output; specified for same load and stability conditions as Channel A. |
| 8 | V+ | Positive supply terminal; accepts 1.6V–5.5V; PSRR of 120 dB minimizes supply ripple coupling into output. |
Key Features
| Feature | Design Value |
|---|---|
| Micropower Operation | 16 µA per channel at 1.8V enables multi-year battery life in wireless sensor nodes and wearable medical monitors. |
| Ultra-Low Input Bias Current | 20 fA allows direct connection to high-impedance sources (e.g., glass pH electrodes, photodiode transimpedance stages) without guard rings or T-networks. |
| Precision DC Performance | ±150 µV VOS and ±0.5 µV/°C TCVOS maintain calibration integrity over temperature in portable diagnostic equipment. |
| Rail-to-Rail Output | Swings within 15 mV of V+ and V−, delivering full 1.6V–5.5V supply range as usable output span in single-supply systems. |
| Extended Common-Mode Range | Operates with inputs 200 mV below V−, enabling true ground-referenced sensing in 0 V–3.3 V systems without level-shifting. |
Applications
| Precision Instrumentation Amplifiers | Battery Powered Medical Instrumentation |
|---|---|
Use Scenario: High-gain, low-drift front-end for portable ECG or blood glucose meters requiring stable DC accuracy over battery discharge. IC Role / Device Role / Timing Role: Dual-channel precision op amp configured as 3-op-amp instrumentation amplifier with matched gain and offset. Use Value: 120 dB CMRR and 97 dB PSRR reject power supply noise and common-mode interference while maintaining sub-µV-level baseline stability. |
Use Scenario: Signal conditioning for disposable wearable biosensors powered by CR2032 coin cells with 10+ year shelf life. IC Role / Device Role / Timing Role: Low-power sensor interface amplifier for analog front-end of pulse oximeter or temperature patch. Use Value: 16 µA supply current per channel extends operating time beyond 12 months on a single coin cell at 10-second sampling intervals. |
| High Impedance Sensors | Strain Gauge Bridge Amplifier |
Use Scenario: Direct interfacing of ceramic humidity sensors or MEMS microphones with >100 MΩ output impedance. IC Role / Device Role / Timing Role: Unity-gain buffer isolating high-Z sensor element from downstream ADC input capacitance. Use Value: 20 fA input bias current prevents voltage droop and settling errors, ensuring <0.1% measurement error over 100 ms acquisition windows. |
Use Scenario: Wheatstone bridge excitation and differential amplification in handheld torque wrenches or load cells. IC Role / Device Role / Timing Role: Precision difference amplifier with programmable gain, using one LMP2232BMA/NOPB channel for bridge sensing and second for reference buffering. Use Value: Matched channel offset and drift (<0.5 µV/°C) eliminate thermal gradient-induced zero-shift errors in field-deployed industrial tools. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2333AIDR | Higher quiescent current (17 µA vs. 16 µA), lower VOS (10 µV typ), but only rated to 85°C ambient. | Preferred for lab-grade instruments with active thermal management; not qualified for extended industrial temperature range. | Select when sub-25 µV typical offset outweighs need for –40°C to 125°C operation. |
| MCP6V82-E/SN | Zero-drift architecture (0.01 µV/°C drift), higher supply current (65 µA), 1.8V min supply. | Better long-term DC stability in calibration-critical systems; trades 4× higher power for near-zero drift. | Choose for metrology-grade applications where drift dominates error budget and power is secondary. |
Compared with OPA2333AIDR and MCP6V82-E/SN, the LMP2232BMA/NOPB uniquely balances ultra-low power (16 µA), full industrial temperature rating (–40°C to 125°C), and precision DC specs - making it optimal for battery-powered field instruments where thermal derating and energy efficiency are co-constrained.
Availability
LMP2232BMA/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 automotive, industrial, and healthcare OEM programs.
Supply support for LMP2232BMA/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 LMP2232BMA/NOPB belongs to TI's LMP™ precision amplifier family, engineered specifically for micropower, high-accuracy sensor signal conditioning in portable and battery-operated systems.
FAQ
What is the maximum operating temperature range for the LMP2232BMA/NOPB?
The LMP2232BMA/NOPB is fully specified from –40°C to +125°C junction temperature. This extended range is validated across all key parameters including input offset voltage, drift, supply current, and output drive capability - making it suitable for under-hood automotive sensors and industrial field equipment exposed to harsh thermal environments.
Does the LMP2232BMA/NOPB support true single-supply operation with inputs referenced to ground?
Yes. The LMP2232BMA/NOPB supports common-mode input voltages down to 200 mV below the negative supply rail (V−). When V− = 0 V, inputs can operate from –0.2 V to V+ – 0.2 V, enabling direct ground-referenced sensing without level-shifting circuitry - a critical feature for single-supply battery-powered instrumentation.
What is the guaranteed input offset voltage specification for the LMP2232BMA/NOPB?
The LMP2232BMA/NOPB has a maximum input offset voltage of ±150 µV across temperature (–40°C to +125°C) and supply voltage (1.6V to 5.5V). This limit applies to the "B" grade variant explicitly identified in the datasheet's electrical characteristics tables and is tested during production screening.
Can the LMP2232BMA/NOPB drive capacitive loads, and what is its phase margin?
Yes. The LMP2232BMA/NOPB is stable with up to 20 pF capacitive load at unity gain, achieving 66° phase margin at 3.3V supply. This allows direct connection to ADC input capacitors or long PCB traces without external isolation resistors - simplifying layout in compact sensor modules.
How does the LMP2232BMA/NOPB compare to the LMP2232AMAX/NOPB in terms of precision specifications?
The LMP2232BMA/NOPB specifies ±0.5 µV/°C maximum offset drift (TCVOS), matching the tighter "A" grade drift spec. However, its input offset voltage max remains ±150 µV - identical to the LMP2232AMAX/NOPB. Both share identical package, pinout, and all other DC/AC specs except that the "A" grade guarantees ±100 µV VOS max, while "B" does not tighten that limit.
LMP2232BMA/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LMP®
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- 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
LMP2232BMA/NOPB FAQ
1.How can I place an order for LMP2232BMA/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMP2232BMA/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 LMP2232BMA/NOPB reliable?
The price and inventory of LMP2232BMA/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMP2232BMA/NOPB is usually 5 days.
3.What payment methods are accepted for LMP2232BMA/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMP2232BMA/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMP2232BMA/NOPB?
LMP2232BMA/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMP2232BMA/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 LMP2232BMA/NOPB?
For technical support, including LMP2232BMA/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMP2232BMA/NOPB requirements.
6.How does Aetrix verify that LMP2232BMA/NOPB is sourced from the original manufacturer or authorized distributors?
All LMP2232BMA/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 LMP2232BMA/NOPB meets industry standards.
7.What is the process for return or replacement of LMP2232BMA/NOPB?
All LMP2232BMA/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMP2232BMA/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 LMP2232BMA/NOPB part is unused and in its original packaging.
Return procedure for LMP2232BMA/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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