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Texas Instruments LMP2234BMAE/NOPB
- Part No.:
- LMP2234BMAE/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LMP2234BMAE/NOPB.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,958
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Product details
Overview
LMP2234BMAE/NOPB from Texas Instruments is a quad 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, ±0.75 µV/°C max offset drift, 130 kHz gain bandwidth, 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 LMP2234BMAE/NOPB datasheet, LMP2234BMAE/NOPB pinout, LMP2234BMAE/NOPB application, or LMP2234BMAE/NOPB equivalent, key selection criteria include guaranteed low TCVOS (±0.75 µV/°C max), sub-50 µA per-channel supply current at 1.8V, ±20 fA input bias current, 120 dB PSRR/CMRR, and operation across –40°C to 125°C industrial temperature range.
Technical Context
The LMP2234BMAE/NOPB implements a CMOS-input, rail-to-rail output architecture optimized for precision DC-coupled amplification in single-supply systems. Its input stage supports common-mode voltage down to 200 mV below V–, enabling ground-sensing configurations without level-shifting circuitry.
It features a unity-gain-stable design with 68° phase margin at 20 pF load and 10 kΩ load, delivering 58 V/ms slew rate and 130 kHz GBWP while maintaining <0.005% THD+N at 100 Hz - making it suitable for low-frequency, high-fidelity analog front-ends where power and accuracy are co-constrained.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.6V to 5.5V - enables direct operation from single-cell Li-ion (3.0–3.7V), two-cell alkaline (2.4–3.2V), or low-voltage microcontroller rails. |
| Max Input Offset Voltage | ±150 µV - ensures ≤0.003% full-scale error in 5V-span 16-bit systems without trimming. |
| Max Offset Drift | ±0.75 µV/°C (LMP2234B grade) - limits thermal-induced error to <9 µV over 0–125°C ambient range. |
| Input Bias Current | ±20 fA - preserves signal integrity when amplifying high-impedance sources (>1 GΩ), e.g., pH electrodes or piezoresistive sensors. |
| Supply Current per Channel | 31 µA at 1.8V - allows four independent channels to operate continuously on a 100 mAh coin cell for >130 days. |
| Gain Bandwidth Product | 130 kHz - supports stable closed-loop gain ≥10 up to ~13 kHz, sufficient for thermocouple, RTD, and bridge sensor bandwidths. |
| Output Swing | Rail-to-rail with ≤15 mV headroom - maximizes dynamic range in 1.8V–3.3V systems, improving ADC utilization by ≥10% vs. legacy op amps. |
Pinout & Package
Package: 14-pin TSSOP (Thin Shrink Small Outline Package), 5.0 mm × 4.4 mm × 1.2 mm body, 0.65 mm pitch - compatible with standard SMT reflow profiles and space-constrained portable PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 5, 9, 12 | Inverting Input (−) | High-impedance CMOS node; accepts differential signals from transducers without loading effects. |
| 2, 6, 10, 13 | Non-inverting Input (+) | Accepts reference voltages or sensor outputs; common-mode range extends 200 mV below V−. |
| 3, 7, 11, 14 | Output | Rail-to-rail capable; drives 10 kΩ loads with ≤15 mV saturation, supporting direct ADC interfacing. |
| 4 | V− (Negative Supply) | Ground reference for single-supply operation; supports true ground-sensing in instrumentation amps. |
| 8 | V+ (Positive Supply) | Accepts 1.6V–5.5V; internal regulation ensures stable biasing across full voltage range. |
Key Features
| Feature | Design Value |
|---|---|
| Micropower Operation | 31 µA/channel at 1.8V - extends battery life in portable ECG monitors and glucose meters beyond 4 months. |
| Precision DC Performance | ±150 µV VOS + ±0.75 µV/°C TCVOS - eliminates need for system-level calibration in Class I medical sensor nodes. |
| Ultra-Low Input Bias Current | ±20 fA - prevents signal degradation in high-Z pH probe and photodiode preamp circuits. |
| Rail-to-Rail Output | Swings within 15 mV of V+ and V− - recovers 30 mV more dynamic range than typical 100-mV-rail op amps at 3.3V supply. |
| Wide Temperature Range | –40°C to +125°C operation - qualified for under-hood automotive sensor modules and industrial process controllers. |
Applications
| Precision Instrumentation Amplifiers | Battery Powered Medical Instrumentation |
|---|---|
Use Scenario: High-gain, low-noise amplification of millivolt-level signals from load cells and pressure transducers in handheld calibrators. IC Role / Device Role / Timing Role: Primary gain stage in 3-op-amp IA topology; provides matched VOS and TCVOS across all four channels for common-mode rejection. Use Value: Enables 100 dB CMRR at DC without laser trimming, reducing BOM cost and assembly complexity. |
Use Scenario: Front-end signal conditioning for wearable pulse oximeters and portable ECG recorders powered by CR2032 batteries. IC Role / Device Role / Timing Role: Low-noise, low-drift amplifier for photodiode and electrode inputs; operates continuously at 1.8V to minimize quiescent power. Use Value: Delivers 2.3 µVPP 0.1–10 Hz noise and <50 µA total supply current for all four channels, extending runtime to >120 hours. |
| High Impedance Sensors | Strain Gauge Bridge Amplifier |
Use Scenario: Direct interfacing of glass pH electrodes (≥1 GΩ source impedance) and MEMS capacitive humidity sensors in environmental monitoring nodes. IC Role / Device Role / Timing Role: Buffer and gain stage; leverages ±20 fA input bias current to prevent electrode polarization and measurement drift. Use Value: Maintains <0.1 pH unit accuracy over 24-hour continuous operation without recalibration. |
Use Scenario: Amplification of Wheatstone bridge outputs from metal foil strain gauges in structural health monitoring systems. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier with matched LMP2234B channels providing 100× gain and 120 dB PSRR. Use Value: Rejects supply ripple and thermal EMFs, achieving <0.05% full-scale nonlinearity across –25°C to 70°C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2333P | Lower VOS (±2 µV typ), higher supply current (17 µA/ch), same 1.8V–5.5V range, but only dual-channel. | Preferred for ultra-low-offset DC-critical apps (e.g., precision DAC buffers); less suitable for quad-channel space-constrained designs. | Select OPA2333P when VOS < ±10 µV is mandatory and board area permits two separate dual packages. |
| MCP6V81-E/SN | Higher VOS (±250 µV max), lower supply current (1.6 µA/ch), same rail-to-rail output, but limited to –40°C to +85°C. | Better for ultra-long-life battery apps (e.g., remote sensor nodes) where offset drift tolerance exceeds ±2.5 µV/°C. | Choose MCP6V81-E/SN only for cost-sensitive, low-temperature industrial deployments where extended temperature range is not required. |
Compared with OPA2333P and MCP6V81-E/SN, the LMP2234BMAE/NOPB uniquely balances quad-channel integration, ±0.75 µV/°C drift guarantee, and 125°C operation - making it optimal for compact, high-reliability medical and test equipment where thermal stability and channel density are jointly critical.
Availability
LMP2234BMAE/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 LMP2234BMAE/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 LMP2234BMAE/NOPB belongs to TI's LMP™ precision amplifier family, engineered specifically for micropower, high-accuracy sensor signal conditioning in portable and harsh-environment applications.
FAQ
What is the guaranteed maximum input offset voltage for LMP2234BMAE/NOPB?
The LMP2234BMAE/NOPB has a guaranteed maximum input offset voltage of ±150 µV across the full operating temperature range (–40°C to +125°C), as specified in the Electrical Characteristics table for the LMP2234B grade. This value is tested and ensured during production, not derived from typical curves or statistical projections. The LMP2234BMAE/NOPB achieves this performance using laser-trimmed input-stage matching and proprietary CMOS process optimization.
Does LMP2234BMAE/NOPB support true ground-sensing operation?
Yes, the LMP2234BMAE/NOPB supports true ground-sensing operation because its common-mode input voltage range extends 200 mV below the negative supply rail (V−). When V− = 0 V (ground), the input can accept signals down to –0.2 V, enabling direct amplification of transducer outputs referenced to system ground without external level-shifting circuitry. This capability is explicitly verified in the CMVR specification across all supply voltages from 1.6V to 5.5V.
What is the minimum supply voltage at which LMP2234BMAE/NOPB remains fully functional?
The LMP2234BMAE/NOPB is fully functional down to 1.6 V supply voltage, as defined in its Operating Ratings. At 1.6 V, it maintains guaranteed specifications including ±150 µV max VOS, ±0.75 µV/°C max TCVOS, 130 kHz GBWP, and rail-to-rail output swing. This 1.6 V minimum enables compatibility with emerging low-voltage energy harvesting systems and single-cell lithium-thionyl chloride batteries.
How does the input bias current of LMP2234BMAE/NOPB compare to bipolar-input op amps?
The LMP2234BMAE/NOPB specifies ±20 fA maximum input bias current - over six orders of magnitude lower than typical bipolar-input op amps (e.g., LM324: ±20 nA). This ultra-low bias current prevents loading errors in high-impedance sensor circuits such as pH electrodes, piezoelectric accelerometers, and capacitive humidity sensors. The value is measured and guaranteed at 25°C and –40°C to +125°C extremes per TI's production test flow.
Is LMP2234BMAE/NOPB pin-compatible with other members of the LMP2234 family?
Yes, the LMP2234BMAE/NOPB is fully pin-compatible with all LMP2234 variants (e.g., LMP2234AMAE/NOPB, LMP2234BMAX/NOPB) in the same 14-pin TSSOP or SOIC package. Pin assignments, footprint, and thermal pad configuration are identical across grades and packaging options. This allows seamless substitution during prototyping or production without PCB redesign, provided the selected grade meets the target VOS and TCVOS requirements.
LMP2234BMAE/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- 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
LMP2234BMAE/NOPB FAQ
1.How can I place an order for LMP2234BMAE/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMP2234BMAE/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 LMP2234BMAE/NOPB reliable?
The price and inventory of LMP2234BMAE/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMP2234BMAE/NOPB is usually 5 days.
3.What payment methods are accepted for LMP2234BMAE/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMP2234BMAE/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMP2234BMAE/NOPB?
LMP2234BMAE/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMP2234BMAE/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 LMP2234BMAE/NOPB?
For technical support, including LMP2234BMAE/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMP2234BMAE/NOPB requirements.
6.How does Aetrix verify that LMP2234BMAE/NOPB is sourced from the original manufacturer or authorized distributors?
All LMP2234BMAE/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 LMP2234BMAE/NOPB meets industry standards.
7.What is the process for return or replacement of LMP2234BMAE/NOPB?
All LMP2234BMAE/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMP2234BMAE/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 LMP2234BMAE/NOPB part is unused and in its original packaging.
Return procedure for LMP2234BMAE/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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