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Texas Instruments LMP2234BMA/NOPB
- Part No.:
- LMP2234BMA/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LMP2234BMA/NOPB.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,674
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Product details
Overview
LMP2234BMA/NOPB from Texas Instruments is a quad 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, ±0.75 µV/°C max offset drift, ±20 fA input bias current, 130 kHz gain bandwidth, and 120 dB open-loop gain - enabling high-accuracy sensor signal conditioning in ultra-low-power portable medical and instrumentation systems.
For engineers reviewing the LMP2234BMA/NOPB datasheet, LMP2234BMA/NOPB pinout, LMP2234BMA/NOPB application, or LMP2234BMA/NOPB equivalent, key selection criteria include micropower consumption at sub-2V supply, guaranteed low-drift performance across −40°C to +125°C, rail-to-rail output swing within 15 mV of rails, and compatibility with high-impedance transducer interfaces requiring femtoampere-level bias current.
Technical Context
The LMP2234BMA/NOPB implements a CMOS-input, fully differential input stage with chopper-stabilized architecture to achieve low offset and drift without sacrificing bandwidth or noise. Its rail-to-rail output stage uses complementary PMOS/NMOS drivers to maintain linearity and drive capability down to 15 mV from either supply rail.
It operates across 1.6V–5.5V with quiescent current as low as 31 µA per channel at 1.8V, enabling direct integration into single-cell Li-ion, coin-cell, or energy-harvesting systems. The device supports ground-sensing common-mode input down to 200 mV below V−, critical for single-supply bridge and thermocouple amplifiers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.6V to 5.5V - enables operation from single alkaline, LiFePO₄, or boosted energy-harvesting sources without regulation. |
| Input Offset Voltage (max) | ±150 µV - ensures ≤0.015% error in 1V full-scale precision gain stages without trimming. |
| Offset Drift (max) | ±0.75 µV/°C - limits total offset shift to <1.2 µV over 0–85°C ambient, supporting stable long-term calibration. |
| Input Bias Current (max) | ±20 fA - permits use with >10 GΩ source impedances (e.g., pH electrodes, piezoresistive sensors) without significant voltage error. |
| Gain Bandwidth Product | 130 kHz - supports closed-loop gains up to 130 at 1 kHz, sufficient for DC-coupled strain gauge and thermocouple amplification. |
| Output Swing (from rail) | 15 mV - delivers >99% dynamic range at 3.3V supply, maximizing ADC utilization in battery-powered data loggers. |
| PSRR / CMRR | 120 dB / 97 dB - rejects supply ripple and common-mode interference in noisy industrial or medical environments. |
Pinout & Package
Package: 14-pin SOIC (Small Outline Integrated Circuit), body width 3.9 mm, standard JEDEC MS-012AC footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 5, 9, 12 | Inverting Input (−) | High-impedance CMOS node accepting differential sensor signals; requires guarded layout for fA-level bias control. |
| 2, 6, 10, 13 | Non-inverting Input (+) | High-impedance CMOS node; supports reference-biased configurations for ground-referenced transducers. |
| 3, 7, 11, 14 | Output | Rail-to-rail CMOS output capable of sourcing/sinking ≥11 mA at 3.3V; drives 10 kΩ loads to within 15 mV of rails. |
| 4 | V− (Ground) | Negative supply terminal; common return for all four amplifiers; supports true ground-sensing operation. |
| 8 | V+ | Positive supply input; accepts 1.6V–5.5V; decoupling capacitor required at pin for stability at full bandwidth. |
Key Features
| Feature | Design Value |
|---|---|
| Micropower operation | 31 µA/channel at 1.8V - extends coin-cell life beyond 5 years in intermittent-sampling IoT nodes. |
| Ultra-low input bias current | ±20 fA - eliminates leakage-induced offset in high-Z electrochemical and capacitive sensor front-ends. |
| Rail-to-rail output | Swings to within 15 mV of V+ or V− - preserves full-scale resolution when interfacing to 12-bit+ SAR ADCs. |
| Wide temperature range | −40°C to +125°C operation - qualified for automotive cabin and industrial motor-control sensor modules. |
| Low 1/f noise | 2.3 µVPP (0.1–10 Hz) - minimizes baseline drift in DC-coupled medical ECG and EEG amplifiers. |
Applications
| Precision Instrumentation Amplifiers | Battery Powered Medical Instrumentation |
|---|---|
Use Scenario: High-gain, low-noise amplification of microvolt-level signals from load cells and pressure sensors in portable calibrators. IC Role / Device Role / Timing Role: Primary gain-stage amplifier in 3-op-amp IA topology, providing matched input bias and offset for common-mode rejection. Use Value: ±150 µV VOS and ±0.75 µV/°C TCVOS ensure calibrated accuracy remains within 0.02% over full temperature range without recalibration. | Use Scenario: Front-end amplification of biopotential signals (ECG, EMG) in handheld diagnostic devices powered by CR2032 coin cells. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier input buffer with ultra-low bias current to prevent electrode polarization errors. Use Value: ±20 fA input bias current prevents DC drift in Ag/AgCl electrode interfaces, maintaining baseline stability for >24-hour continuous monitoring. |
| High Impedance Sensors | Strain Gauge Bridge Amplifier |
Use Scenario: Signal conditioning for pH electrodes and ion-selective field-effect transistors (ISFETs) in environmental water-quality sensors. IC Role / Device Role / Timing Role: Unity-gain buffer isolating high-impedance (>1 GΩ) sensing element from downstream filtering and digitization circuitry. Use Value: Femtoampere-level bias current avoids measurement error >10 mV in 100 MΩ source impedance configurations at 25°C. | Use Scenario: Amplifying differential output of quarter-bridge strain gauges in structural health monitoring nodes deployed on bridges and wind turbines. IC Role / Device Role / Timing Role: Differential-to-single-ended converter with programmable gain, leveraging rail-to-rail output to maximize ADC dynamic range. Use Value: 15 mV output swing margin at 3.3V supply enables >99% utilization of 12-bit ADC full scale, improving SNR by 1.5 bits versus non-rail-to-rail alternatives. |
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 | Chopper-stabilized; lower VOS (±2 µV), higher IQ (17 µA/channel), 1.8V min supply | Better DC accuracy but higher power; less suitable for <1.8V coin-cell operation | Select when ultra-low offset dominates over supply voltage flexibility |
| AD8604ARUZ | CMOS input; higher IQ (48 µA/channel); wider GBW (8 MHz); no guaranteed 1.6V operation | Higher speed and drive strength, but incompatible with sub-1.8V battery systems | Select when bandwidth >100 kHz and supply ≥2.7V are available |
Compared with OPA2333P and AD8604ARUZ, the LMP2234BMA/NOPB uniquely balances sub-2V operation, femtoampere bias, and <150 µV offset - making it the only option qualified for precision analog front-ends in 1.6V–3.3V energy-constrained medical and sensor nodes.
Availability
LMP2234BMA/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 long production lifecycles.
Supply support for LMP2234BMA/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 delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.
The LMP™ precision amplifier family, including the LMP2234BMA/NOPB, was designed specifically for ultra-low-power, high-accuracy signal conditioning in battery-operated and energy-sensitive measurement systems.
FAQ
What is the minimum operating supply voltage for the LMP2234BMA/NOPB?
The LMP2234BMA/NOPB operates down to 1.6V, verified across −40°C to +125°C. At 1.8V, its typical supply current is 31 µA per channel, making it suitable for single-cell alkaline or LiFePO₄ systems where regulated 3.3V is unavailable. This 1.6V minimum is guaranteed in the datasheet's Operating Ratings table and confirmed in 1.8V/2.5V/3.3V/5V electrical characterization sections.
Does the LMP2234BMA/NOPB support rail-to-rail input common-mode range?
No - the LMP2234BMA/NOPB supports rail-to-rail *output* swing (within 15 mV of V+ or V−), but its common-mode input voltage range extends only to 200 mV below V− and up to V+ − 0.2 V. This allows ground-sensing in single-supply configurations but does not include the positive rail. The datasheet specifies CMVR as −0.2 V to 4.2 V at 5V supply, confirming the negative rail extension but not full rail-to-rail input.
What is the guaranteed maximum input offset voltage drift for the LMP2234BMA/NOPB?
The LMP2234BMA/NOPB has a guaranteed maximum input offset voltage drift of ±0.75 µV/°C, specified for the "LMP2234B" variant in the Electrical Characteristics tables under both 5V and 3.3V conditions. This value applies across the full −40°C to +125°C operating temperature range and is distinct from the LMP2234A grade (±0.75 µV/°C) and LMP2234B grade (±2.5 µV/°C) - the "B" suffix in LMP2234BMA/NOPB confirms the tighter drift bin.
Can the LMP2234BMA/NOPB drive a 10 kΩ load while maintaining rail-to-rail output swing?
Yes - the LMP2234BMA/NOPB guarantees output swing within 15 mV of either rail when driving a 10 kΩ load to V+/2, as confirmed in the 5V/3.3V/2.5V/1.8V DC Electrical Characteristics tables. At 3.3V supply, VO(High) and VO(Low) are both specified as 14 mV (typical) and 50 mV (max) from the respective rails under those exact conditions, ensuring usable dynamic range for 12-bit ADC interfacing.
Is the LMP2234BMA/NOPB pin-compatible with other LMP2234 variants?
Yes - all LMP2234 variants (including LMP2234AMX/NOPB, LMP2234BMA/NOPB, and LMP2234BMM/NOPB) share identical 14-pin SOIC and TSSOP pinouts and electrical pin functions. The "BMA" suffix denotes the 14-pin SOIC package with the B-grade offset drift specification; no PCB layout change is required when substituting between same-package variants, though performance parameters (VOS, TCVOS, IB) differ by grade.
LMP2234BMA/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- 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:
- 36µA (x4 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:
- 14-SOIC
LMP2234BMA/NOPB FAQ
1.How can I place an order for LMP2234BMA/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMP2234BMA/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 LMP2234BMA/NOPB reliable?
The price and inventory of LMP2234BMA/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMP2234BMA/NOPB is usually 5 days.
3.What payment methods are accepted for LMP2234BMA/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMP2234BMA/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMP2234BMA/NOPB?
LMP2234BMA/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMP2234BMA/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 LMP2234BMA/NOPB?
For technical support, including LMP2234BMA/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMP2234BMA/NOPB requirements.
6.How does Aetrix verify that LMP2234BMA/NOPB is sourced from the original manufacturer or authorized distributors?
All LMP2234BMA/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 LMP2234BMA/NOPB meets industry standards.
7.What is the process for return or replacement of LMP2234BMA/NOPB?
All LMP2234BMA/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMP2234BMA/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 LMP2234BMA/NOPB part is unused and in its original packaging.
Return procedure for LMP2234BMA/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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