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Texas Instruments LMP2232BMM/NOPB
- Part No.:
- LMP2232BMM/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LMP2232BMM/NOPB.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,000
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Product details
Overview
LMP2232BMM/NOPB from Texas Instruments is a dual micropower precision operational amplifier with CMOS input, rail-to-rail output, and 1.6V to 5.5V supply operation. It delivers ±150 µV max input offset voltage, ±0.5 µV/°C max offset drift, 20 fA input bias current, 130 kHz gain-bandwidth product, and operates across –40°C to +125°C - enabling high-accuracy sensor signal conditioning in ultra-low-power portable medical and instrumentation systems.
For engineers reviewing the LMP2232BMM/NOPB datasheet, LMP2232BMM/NOPB pinout, LMP2232BMM/NOPB application, or LMP2232BMM/NOPB equivalent, key selection criteria include micropower operation at 1.8V, sub-µV/°C drift stability, femtoampere-level input bias for high-impedance sources, rail-to-rail output swing within 15 mV of rails, and guaranteed performance over extended temperature range.
Technical Context
The LMP2232BMM/NOPB uses a CMOS input stage delivering 20 fA typical input bias current and supports common-mode input down to 200 mV below V–, enabling ground-sensing single-supply configurations. Its micropower architecture achieves 16 µA supply current per channel at 1.8V while maintaining 120 dB open-loop gain and 120 dB PSRR.
It features a unity-gain-stable design with 68° phase margin (CL = 20 pF, RL = 10 kΩ), 58 V/ms slew rate, and low 60 nV/√Hz input voltage noise at 1 kHz - optimized for DC-critical, low-noise amplification of thermocouples, strain gauges, and pH sensors without compromising battery life.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.6V to 5.5V - enables direct operation from single-cell Li-ion, coin cell, or regulated 3.3V/2.5V rails without level-shifting. |
| Input Offset Voltage (max) | ±150 µV - ensures ≤0.015% error in 1V full-scale precision measurement circuits without trimming. |
| Offset Drift (max) | ±0.5 µV/°C - limits thermal-induced error to <0.5 µV over 10°C ambient shift, critical for uncalibrated field instruments. |
| Input Bias Current (typ) | 20 fA - permits use with >1 GΩ source impedances (e.g., glass pH electrodes) without significant voltage error. |
| Gain-Bandwidth Product | 130 kHz - supports stable closed-loop gains up to ~130 at 1 kHz, sufficient for anti-aliasing and sensor filtering. |
| Output Swing | Rail-to-rail, within 15 mV of V+ and V– - maximizes dynamic range in low-voltage systems (e.g., 1.8V ADC interface). |
| Operating Temperature | –40°C to +125°C - qualified for automotive cabin, industrial sensor nodes, and medical wearable environments. |
Pinout & Package
Package: 8-pin VSSOP (DGK0008A), 3.0 mm × 3.0 mm body, 0.65 mm pitch, exposed pad optional - compatible with space-constrained PCB layouts and automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (Channel A) | High-impedance CMOS node accepting differential signals; requires guarding for <1 pA leakage paths. |
| 2 | Non-Inverting Input (Channel A) | Accepts reference or sensor signal; common-mode range extends 200 mV below V– for ground-referenced sensing. |
| 3 | Output (Channel A) | Rail-to-rail output capable of sourcing/sinking ≥27 mA (at 5V); drives 10 kΩ loads to within 15 mV of rails. |
| 4 | V– (Ground/Ref) | Negative supply terminal; serves as analog ground reference; must be low-impedance for PSRR integrity. |
| 5 | Non-Inverting Input (Channel B) | Independent high-Z input for second sensor channel; identical specs to Pin 2. |
| 6 | Inverting Input (Channel B) | Second differential input; layout symmetry recommended to match Channel A parasitics. |
| 7 | Output (Channel B) | Independent rail-to-rail output; electrically isolated from Channel A except via shared supply pins. |
| 8 | V+ | Positive supply; decoupling capacitor (0.1 µF ceramic) required within 5 mm for stability at all supply voltages. |
Key Features
| Feature | Design Value |
|---|---|
| Micropower operation | 16 µA per channel at 1.8V - extends coin-cell lifetime to >10 years in sleep-wake sensor nodes. |
| Ultra-low input bias current | 20 fA typical - eliminates loading error on high-Z sources like piezoelectric sensors and electrochemical cells. |
| Precision DC performance | ±150 µV VOS and ±0.5 µV/°C TCVOS - enables 16-bit-equivalent accuracy without calibration over temperature. |
| Rail-to-rail output | Swings to within 15 mV of V+ and V– - preserves full ADC input range when interfacing to 1.8V or 2.5V SAR converters. |
| Extended temperature range | Specified from –40°C to +125°C - supports deployment in engine compartments, industrial PLCs, and sterilizable medical devices. |
Applications
| Precision Instrumentation Amplifiers | Battery-Powered Medical Instrumentation |
|---|---|
Use Scenario: Low-drift front-end for portable ECG or blood glucose meters requiring stable gain and minimal baseline drift. IC Role / Device Role / Timing Role: Dual-channel precision op amp configured as differential input stage and reference buffer. Use Value: 20 fA input bias prevents electrode polarization errors; ±0.5 µV/°C drift maintains calibration over body-temperature variations. |
Use Scenario: Signal conditioning for wearable pulse oximetry sensors operating on CR2032 coin cells. IC Role / Device Role / Timing Role: Transimpedance amplifier for photodiode current and DC-coupled gain stage for IR/red LED feedback. Use Value: 16 µA/channel supply current enables multi-day continuous monitoring; rail-to-rail output matches 1.8V ADC input range. |
| High Impedance Sensors | Strain Gauge Bridge Amplifier |
Use Scenario: Interface to glass pH electrodes or ion-selective membranes in handheld environmental testers. IC Role / Device Role / Timing Role: Unity-gain buffer isolating high-impedance probe from downstream circuitry. Use Value: 20 fA input bias avoids measurement offset shifts; 120 dB CMRR rejects common-mode noise from shared power rails. |
Use Scenario: Amplification of millivolt-level outputs from quarter-bridge load cells in industrial weighing terminals. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier using matched LMP2232BMM/NOPB pairs for gain and offset control. Use Value: ±150 µV VOS minimizes zero-error; 130 kHz GBW supports 100 Hz bridge excitation without phase lag. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP6V81-E/SN | Lower VOS (25 µV max) but higher supply current (65 µA) and narrower supply range (1.8V–5.5V). | Better DC accuracy at cost of 4× higher quiescent power - unsuitable for multi-year battery life targets. | Select MCP6V81-E/SN only when VOS <50 µV is mandatory and power budget allows ≥65 µA/channel. |
| OPA333AIDBVR | Zero-drift architecture; VOS <10 µV, TCVOS <0.1 µV/°C, but 17 µA supply current and limited 1.8V–5.5V range. | Superior long-term drift stability for lab-grade instruments; no 1.6V operation - excludes single-cell alkaline designs. | Choose OPA333AIDBVR for metrology-grade stability where 1.6V start-up is not required and 17 µA is acceptable. |
Compared with MCP6V81-E/SN and OPA333AIDBVR, the LMP2232BMM/NOPB uniquely balances 1.6V operation, 16 µA/channel micropower, and ±0.5 µV/°C drift - making it optimal for battery-powered field instruments needing wide supply flexibility and moderate DC precision without zero-drift complexity.
Availability
LMP2232BMM/NOPB is available at Aetrix Electronics and suitable for precision instrumentation amplifiers, battery-powered medical instrumentation, high-impedance sensors, and strain gauge bridge amplifier applications requiring stable component supply across industrial, medical, and test equipment programs.
Supply support for LMP2232BMM/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 amplifiers and low-power signal chain solutions.
The LMP2232BMM/NOPB belongs to TI's LMP™ precision amplifier family, engineered specifically for micropower, high-accuracy sensor interface applications in portable, battery-constrained, and extended-temperature environments.
FAQ
What is the maximum input offset voltage specification for the LMP2232BMM/NOPB?
The LMP2232BMM/NOPB has a maximum input offset voltage of ±150 µV across temperature (–40°C to +125°C), as specified in the Electrical Characteristics table for the 'B' grade. This value is guaranteed by production testing and applies under standard conditions (V+ = 5V, TA = 25°C, RL > 1 MΩ). The LMP2232BMM/NOPB achieves this performance while maintaining micropower operation - a key differentiator versus general-purpose op amps.
Does the LMP2232BMM/NOPB support true rail-to-rail output swing?
Yes, the LMP2232BMM/NOPB provides rail-to-rail output swing, reaching within 15 mV of both V+ and V– rails under 10 kΩ load conditions. This capability is explicitly verified across its full 1.6V–5.5V supply range and temperature span. The output stage is designed to maintain linearity and drive strength near the rails, enabling full utilization of ADC input ranges in low-voltage systems - a critical feature confirmed in the datasheet's VO specifications.
What is the input bias current of the LMP2232BMM/NOPB, and why does it matter?
The LMP2232BMM/NOPB specifies a typical input bias current of 20 fA (0.02 pA), with a maximum of ±125 fA over temperature. This ultra-low value is essential for interfacing with high-impedance sensors such as pH electrodes, piezoelectric elements, or photodiodes, where even picoampere-level currents would introduce significant offset errors. The CMOS input architecture enables this performance while sustaining precision and low power - a combination validated in TI's characterization data.
Can the LMP2232BMM/NOPB operate from a 1.6V supply?
Yes, the LMP2232BMM/NOPB is fully specified to operate from 1.6V to 5.5V, with electrical characteristics guaranteed down to 1.6V. At 1.8V, it draws only 16 µA per channel and maintains 130 kHz gain-bandwidth, 120 dB PSRR, and rail-to-rail output swing. This 1.6V minimum enables direct compatibility with single alkaline or NiMH cells - a capability confirmed in the Operating Ratings and DC Electrical Characteristics tables of the official datasheet.
How does the LMP2232BMM/NOPB differ from the LMP2232AMM/NOPB?
The LMP2232BMM/NOPB and LMP2232AMM/NOPB share identical package, pinout, and core specifications, but differ in offset voltage drift: the 'B' grade guarantees ±0.5 µV/°C max TCVOS, while the 'A' grade guarantees ±2.5 µV/°C max. Both have ±150 µV max VOS. The 'B' grade is selected for applications demanding tighter thermal stability - such as uncalibrated field instruments - whereas the 'A' grade offers cost optimization where drift is less critical. This distinction is explicitly defined in the Electrical Characteristics tables.
LMP2232BMM/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LMP®
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- Differential, Rail-to-Rail
- Slew Rate:
- 0.058V/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-VSSOP
LMP2232BMM/NOPB FAQ
1.How can I place an order for LMP2232BMM/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMP2232BMM/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 LMP2232BMM/NOPB reliable?
The price and inventory of LMP2232BMM/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMP2232BMM/NOPB is usually 5 days.
3.What payment methods are accepted for LMP2232BMM/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMP2232BMM/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMP2232BMM/NOPB?
LMP2232BMM/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMP2232BMM/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 LMP2232BMM/NOPB?
For technical support, including LMP2232BMM/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMP2232BMM/NOPB requirements.
6.How does Aetrix verify that LMP2232BMM/NOPB is sourced from the original manufacturer or authorized distributors?
All LMP2232BMM/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 LMP2232BMM/NOPB meets industry standards.
7.What is the process for return or replacement of LMP2232BMM/NOPB?
All LMP2232BMM/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMP2232BMM/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 LMP2232BMM/NOPB part is unused and in its original packaging.
Return procedure for LMP2232BMM/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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