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Texas Instruments LMP2232BMME/NOPB
- Part No.:
- LMP2232BMME/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LMP2232BMME/NOPB.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,397
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Product details
Overview
LMP2232BMME/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 bridges.
For engineers reviewing the LMP2232BMME/NOPB datasheet, LMP2232BMME/NOPB pinout, LMP2232BMME/NOPB application, or LMP2232BMME/NOPB equivalent, key selection criteria include micropower operation at 1.8V (16 µA/channel), precision DC performance over –40°C to +125°C, low-noise (60 nV/√Hz at 1 kHz), and compatibility with single-supply ground-sensing topologies.
Technical Context
The LMP2232BMME/NOPB employs a CMOS input stage delivering femtoampere-level input bias current and high input impedance, essential for interfacing with high-impedance sensors like thermocouples and piezoresistive elements. Its precision architecture ensures stable DC accuracy across temperature and supply voltage variations.
It features rail-to-rail output with 15 mV headroom at 10 kΩ load, common-mode input range extending 200 mV below negative rail, and unity-gain stable operation up to 130 kHz gain-bandwidth product - supporting both precision DC amplification and low-frequency AC signal conditioning without external compensation.
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 measurements without trimming. |
| Offset Voltage Drift (max) | ±0.5 µV/°C - maintains sub-µV/°C stability over industrial temperature range (–40°C to +125°C). |
| Input Bias Current (typ) | 20 fA - minimizes voltage error across >100 MΩ source impedances (e.g., pH electrodes, photodiode bias networks). |
| Gain-Bandwidth Product | 130 kHz - supports stable closed-loop gain ≥10 up to ~13 kHz for anti-aliasing or sensor filtering. |
| Output Swing (from rail) | 15 mV - preserves >98% dynamic range at 3.3V supply, critical for maximizing ADC utilization in low-voltage systems. |
| Supply Current (per channel) | 16 µA at 1.8V - extends 10-year battery life in continuous-monitoring wearable sensors (e.g., ECG front-end). |
Pinout & Package
Package: 8-pin VSSOP (DGK0008A), 3.0 mm × 3.0 mm footprint, 0.65 mm pitch, thermal resistance θJA = 147.4 °C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (Channel A) | High-impedance CMOS node accepting differential signals from sensors or feedback networks. |
| 2 | Non-Inverting Input (Channel A) | Reference or signal input node; supports common-mode voltages down to –0.2V (200 mV below V–). |
| 3 | Output (Channel A) | Rail-to-rail output capable of sourcing/sinking ≥11 mA (at 3.3V) into 10 kΩ loads. |
| 4 | V– (Ground/Ref) | Negative supply terminal; serves as reference for single-supply operation and enables ground-sensing. |
| 5 | Non-Inverting Input (Channel B) | Independent input for second signal path; electrically isolated from Channel A per datasheet layout guidelines. |
| 6 | Inverting Input (Channel B) | Second high-Z input; matched offset and drift characteristics to Channel A for dual-channel coherence. |
| 7 | Output (Channel B) | Independent rail-to-rail output; no crosstalk specified - validated for simultaneous operation in dual-sensor systems. |
| 8 | V+ | Positive supply input; accepts 1.6V–5.5V; internal regulation ensures PSRR ≥120 dB across operating range. |
Key Features
| Feature | Design Value |
|---|---|
| Micropower operation | 16 µA/channel at 1.8V enables multi-year battery life in portable medical monitors and IoT edge nodes. |
| Ultra-low input bias current | 20 fA allows direct connection to >1 GΩ sources (e.g., ceramic humidity sensors) without guard rings or leakage compensation. |
| Precision DC performance | ±150 µV VOS and ±0.5 µV/°C TCVOS eliminate need for factory calibration in Class I medical instrumentation. |
| Rail-to-rail output | Swings within 15 mV of V+ and V– at 10 kΩ load, maximizing signal-to-noise ratio when driving 12-bit+ SAR ADCs. |
| Wide temperature range | Specified from –40°C to +125°C supports under-hood automotive sensors and industrial process controllers. |
Applications
| Precision Instrumentation Amplifiers | Battery Powered Medical Instrumentation |
|---|---|
Use Scenario: High-gain, low-drift amplification of microvolt-level biopotential signals (e.g., EEG, EMG) in portable diagnostic devices. IC Role / Device Role / Timing Role: Primary signal-conditioning amplifier in first-stage instrumentation topology with matched resistor networks. Use Value: 20 fA input bias prevents electrode polarization errors; ±150 µV VOS ensures baseline stability without frequent zeroing. |
Use Scenario: Continuous glucose monitor (CGM) analog front-end acquiring electrochemical current from enzyme-based sensors. IC Role / Device Role / Timing Role: Transimpedance amplifier converting pA-level sensor current to measurable voltage with minimal power draw. Use Value: 16 µA supply current extends disposable patch battery life beyond 14 days; rail-to-rail output interfaces directly with low-voltage ADC. |
| High Impedance Sensors | Strain Gauge Bridge Amplifier |
Use Scenario: Signal conditioning for MEMS-based pressure sensors with >100 MΩ output impedance in HVAC and industrial transmitters. IC Role / Device Role / Timing Role: Buffer and gain stage isolating high-Z sensor element from PCB trace capacitance and downstream circuitry. Use Value: CMOS input eliminates leakage-induced offset shift; 1.6V minimum supply enables integration with energy-harvesting power sources. |
Use Scenario: Wheatstone bridge excitation and differential amplification in load cells and torque sensors for factory automation. IC Role / Device Role / Timing Role: Dual-op-amp configuration implementing precision difference amplifier with gain set by external resistors. Use Value: Matched VOS and TCVOS between channels minimize common-mode rejection degradation; 97 dB CMRR ensures <0.1% error at 1 mV/V bridge output. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2333P | Lower offset (±2 µV), higher quiescent current (17 µA), same 1.8V min supply. | Better DC accuracy but higher power; less suitable for multi-year battery life requirements. | Select when ultra-low VOS dominates over micropower constraints - e.g., laboratory-grade calibrators. |
| AD8603ARZ | Higher supply current (50 µA), wider GBW (400 kHz), same rail-to-rail output. | Supports faster settling but consumes >3× more power; requires larger battery or frequent charging. | Prefer for mixed-signal systems needing faster response (e.g., active filters) where power budget allows. |
Compared with OPA2333P and AD8603ARZ, the LMP2232BMME/NOPB uniquely balances sub-150 µV offset, femtoampere input bias, and <17 µA supply current - making it optimal for long-life, high-impedance, single-supply sensor nodes where DC precision and energy efficiency are co-critical.
Availability
LMP2232BMME/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 temperature ranges and multi-year production cycles.
Supply support for LMP2232BMME/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 LMP2232BMME/NOPB belongs to TI's LMP™ precision amplifier family, engineered specifically for ultra-low-power, high-accuracy sensor signal conditioning in portable and harsh-environment applications.
FAQ
What is the maximum operating temperature for the LMP2232BMME/NOPB?
The LMP2232BMME/NOPB is fully specified from –40°C to +125°C ambient temperature. This extended range is validated across all key parameters including input offset voltage, bias current, and open-loop gain - ensuring reliable operation in automotive under-hood modules, industrial motor drives, and outdoor environmental sensors where thermal stress is critical.
Does the LMP2232BMME/NOPB support true rail-to-rail input?
No, the LMP2232BMME/NOPB does not support rail-to-rail input. Its common-mode input voltage range extends 200 mV below the negative rail (V–) but only to (V+ – 1.2 V) at the upper end. However, its rail-to-rail output (within 15 mV of both rails) and wide input common-mode range make it ideal for ground-sensing single-supply configurations - a key feature confirmed in the datasheet's Figure 1 strain gauge application.
Can the LMP2232BMME/NOPB drive capacitive loads directly?
The LMP2232BMME/NOPB is unity-gain stable with capacitive loads up to 20 pF, as verified in AC electrical characteristics and Figure 37 (Phase Margin vs. Capacitive Load). Driving larger loads (e.g., >50 pF cables or ADC input capacitance) requires isolation via a series resistor or buffer stage to maintain phase margin >60° and prevent oscillation - a design constraint explicitly documented in the datasheet's stability section.
What is the typical input voltage noise density of the LMP2232BMME/NOPB?
The LMP2232BMME/NOPB has a typical input-referred voltage noise density of 60 nV/√Hz at 1 kHz, consistent across 1.8V, 2.5V, 3.3V, and 5V supply conditions. This value is measured and guaranteed in the AC Electrical Characteristics tables - enabling accurate SNR prediction in low-frequency sensor interfaces such as thermocouple amplifiers and bridge circuits where 1/f noise dominates.
Is the LMP2232BMME/NOPB pin-compatible with other members of the LMP223x family?
Yes, the LMP2232BMME/NOPB shares identical 8-pin VSSOP pinout with the LMP2231 (single) and LMP2234 (quad) variants. All three devices use the same DGK0008A package outline and pin mapping - allowing drop-in replacement in dual-channel designs or scalable layout reuse across single/dual/quad configurations without PCB revision.
LMP2232BMME/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
LMP2232BMME/NOPB FAQ
1.How can I place an order for LMP2232BMME/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMP2232BMME/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 LMP2232BMME/NOPB reliable?
The price and inventory of LMP2232BMME/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMP2232BMME/NOPB is usually 5 days.
3.What payment methods are accepted for LMP2232BMME/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMP2232BMME/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMP2232BMME/NOPB?
LMP2232BMME/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMP2232BMME/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 LMP2232BMME/NOPB?
For technical support, including LMP2232BMME/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMP2232BMME/NOPB requirements.
6.How does Aetrix verify that LMP2232BMME/NOPB is sourced from the original manufacturer or authorized distributors?
All LMP2232BMME/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 LMP2232BMME/NOPB meets industry standards.
7.What is the process for return or replacement of LMP2232BMME/NOPB?
All LMP2232BMME/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMP2232BMME/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 LMP2232BMME/NOPB part is unused and in its original packaging.
Return procedure for LMP2232BMME/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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