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Texas Instruments LMP2234AMT/NOPB
- Part No.:
- LMP2234AMT/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
LMP2234AMT/NOPB.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,470
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Product details
Overview
LMP2234AMT/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, ±20 fA max input bias current, rail-to-rail output swing within 15 mV of supply 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 LMP2234AMT/NOPB datasheet, LMP2234AMT/NOPB pinout, LMP2234AMT/NOPB application, or LMP2234AMT/NOPB equivalent, key selection criteria include its 31 µA supply current at 1.8V, ±0.75 µV/°C max TCVOS, 130 kHz gain bandwidth, 60 nV/√Hz input voltage noise at 1 kHz, and guaranteed operation across –40°C to +125°C.
Technical Context
The LMP2234AMT/NOPB implements a CMOS-input, rail-to-rail output architecture optimized for single-supply precision amplification. Its input stage achieves ±20 fA bias current and ±150 µV offset, while the output stage swings to within 15 mV of V+ and V− across 1.6V–5.5V supply range - supporting ground-sensing configurations in low-voltage systems.
It features 120 dB open-loop gain, 120 dB PSRR, and 97 dB CMRR (min), ensuring stable DC accuracy and rejection of supply and common-mode disturbances. The device maintains 130 kHz GBWP and 58 V/ms slew rate even at 1.8V supply, enabling reliable small-signal amplification in energy-constrained measurement front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.6V to 5.5V - enables direct operation from single-cell Li-ion, two-cell alkaline, or regulated 3.3V/2.5V rails without level-shifting. |
| Supply Current (per channel) | 31 µA at 1.8V - extends battery life in portable instrumentation; total quiescent power per channel is ~50 µW. |
| Input Offset Voltage (max) | ±150 µV - ensures sub-0.1% gain error in 100 mV full-scale sensor interfaces without trimming. |
| Offset Drift (max) | ±0.75 µV/°C - limits drift-induced error to <1 µV over 10°C ambient change, critical for thermocouple and bridge amplifiers. |
| Input Bias Current (max) | ±20 fA - preserves signal integrity when amplifying high-impedance sources like pH electrodes or piezoresistive sensors. |
| Gain Bandwidth Product | 130 kHz - supports stable closed-loop gain up to 100× at DC–1.3 kHz for precision DC-coupled amplification. |
| Output Swing | Rail-to-rail with ≤15 mV headroom - maximizes dynamic range in single-supply systems, e.g., 0–3.3V ADC input scaling. |
| Operating Temperature | –40°C to +125°C - qualified for industrial and automotive under-hood sensor signal conditioning. |
Pinout & Package
Package: 14-pin TSSOP (MT package code), RoHS-compliant, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 5, 9, 12 | Inverting Input (–IN) for Channels A, B, C, D | High-impedance CMOS node accepting differential sensor signals; requires guarding in PCB layout for fA-level bias current. |
| 2, 6, 10, 13 | Non-inverting Input (+IN) for Channels A, B, C, D | CMOS input with ±20 fA bias current; supports high-Z source coupling without loading error. |
| 3, 7, 11, 14 | Output for Channels A, B, C, D | Rail-to-rail output capable of sourcing/sinking ≥11 mA (at 3.3V); swings within 15 mV of V+ and V−. |
| 4 | V– (Negative Supply) | Ground reference for single-supply operation; common return for all four amplifiers. |
| 8 | V+ (Positive Supply) | Single positive supply input (1.6V–5.5V); powers all four op-amp channels simultaneously. |
| 14-Pin TSSOP Pin 1 Identifier | Notch or dot marking | Ensures correct orientation during automated placement; pin 1 is top-left corner when notch faces upward. |
Key Features
| Feature | Design Value |
|---|---|
| Micropower operation | 31 µA per channel at 1.8V - enables multi-year battery life in wireless sensor nodes powered by coin cells. |
| Ultra-low input bias current | ±20 fA maximum - eliminates voltage error across >100 MΩ sensor impedances (e.g., glass pH electrodes). |
| Precision DC performance | ±150 µV VOS and ±0.75 µV/°C TCVOS - reduces calibration frequency and improves long-term stability in medical monitors. |
| Rail-to-rail output | Swings to within 15 mV of both supply rails - maximizes usable ADC input range in 3.3V or lower systems. |
| Wide temperature range | Specified from –40°C to +125°C - supports deployment in harsh environments including automotive cabin and industrial PLCs. |
| High PSRR and CMRR | 120 dB PSRR / 97 dB CMRR - rejects noise from shared power rails and common-mode interference in noisy industrial settings. |
Applications
| Precision Instrumentation Amplifiers | Battery-Powered Medical Instrumentation |
|---|---|
Use Scenario: High-gain, low-noise amplification of microvolt-level biopotential signals (e.g., ECG, EEG) in portable diagnostic devices. IC Role / Device Role / Timing Role: Front-end DC-coupled amplifier providing gain, offset correction, and drive capability for 24-bit delta-sigma ADCs. Use Value: ±20 fA input bias current prevents electrode polarization errors; rail-to-rail output fully utilizes 0–3.3V ADC reference without external level-shifting. |
Use Scenario: Signal conditioning for disposable glucose meters using electrochemical test strips with high source impedance. IC Role / Device Role / Timing Role: Transimpedance amplifier converting picoamp-level current from enzymatic reaction into measurable voltage. Use Value: 60 nV/√Hz input voltage noise and ±150 µV VOS ensure accurate glucose concentration resolution below 10 mg/dL. |
| High-Impedance Sensors | Strain Gauge Bridge Amplifier |
Use Scenario: Interfacing MEMS accelerometers and capacitive humidity sensors requiring minimal loading of high-Z outputs. IC Role / Device Role / Timing Role: Buffer and gain stage preserving signal fidelity from sensors with >1 GΩ output impedance. Use Value: ±20 fA input bias current avoids signal attenuation and time-constant distortion in RC-filtered sensor paths. |
Use Scenario: Amplifying differential millivolt outputs from full-bridge strain gauges in load cells and pressure transducers. IC Role / Device Role / Timing Role: Precision instrumentation amplifier core (with external resistors) delivering stable gain and low thermal drift. Use Value: ±0.75 µV/°C TCVOS minimizes temperature-induced zero-shift; 120 dB CMRR rejects bridge common-mode noise from excitation sources. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMP2234MME/NOPB | Same die, 14-pin SOIC package (D package); θJA = 101.5°C/W vs. 121°C/W for TSSOP. | Better thermal performance in high-power-density layouts; larger footprint may limit use in space-constrained wearables. | Select for improved thermal dissipation in industrial modules where board area is available. |
| OPA2333P | Zero-drift architecture; 0.02 µV/°C max drift vs. ±0.75 µV/°C; higher 350 kHz GBWP but 55 µA supply current. | Superior long-term DC stability for multi-year calibration-free operation; less suitable for ultra-low-power (<50 µA) designs. | Select when ultra-low drift dominates over micropower requirements, e.g., laboratory-grade data loggers. |
Compared with LMP2234AMT/NOPB, LMP2234MME/NOPB offers identical electrical specs in a thermally superior SOIC package, while OPA2333P trades higher current for near-zero drift - making LMP2234AMT/NOPB optimal for battery-limited, high-impedance sensor interfaces demanding precision and efficiency balance.
Availability
LMP2234AMT/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 industrial, healthcare, and test equipment programs.
Supply support for LMP2234AMT/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 heritage in precision op-amps and low-power signal chain solutions.
The LMP2234AMT/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 maximum operating supply voltage for the LMP2234AMT/NOPB?
The LMP2234AMT/NOPB has an absolute maximum supply voltage of 6V, but its specified operating range is 1.6V to 5.5V. Operation above 5.5V risks permanent damage, while operation below 1.6V may cause loss of rail-to-rail output swing and degraded CMRR. All guaranteed specifications apply strictly within the 1.6V–5.5V range per the datasheet.
Does the LMP2234AMT/NOPB support true rail-to-rail input common-mode range?
No - the LMP2234AMT/NOPB supports rail-to-rail *output* swing (within 15 mV of V+ and V−), but its input common-mode voltage range extends only to 200 mV below the negative supply (V−) and up to V+ − 0.2 V at 5V supply. At 1.8V supply, CMVR is –0.2 V to 1.0 V. This allows ground-sensing in single-supply configurations but does not include the full V+ rail at the input.
Can the LMP2234AMT/NOPB drive a 10 kΩ load while maintaining rail-to-rail output?
Yes - the LMP2234AMT/NOPB is specified to drive 10 kΩ loads while maintaining output swing within 15 mV of both rails across its full temperature and supply range. At 25°C and 3.3V supply, it sources ≥14 mA and sinks ≥11 mA, comfortably exceeding the 0.33 mA required for a 10 kΩ load at 3.3V full scale.
Is the LMP2234AMT/NOPB pin-compatible with other quad op-amps in TSSOP-14 packages?
No - the LMP2234AMT/NOPB uses a non-standard pinout optimized for dual-supply and single-supply flexibility (shared V+ and V− pins). It is not pin-compatible with industry-standard quad op-amps like LM324 or TLV2464. Layout reuse requires verification against the official connection diagram in the SNOSAW4D datasheet.
What is the typical input voltage noise density of the LMP2234AMT/NOPB at 1 kHz?
The LMP2234AMT/NOPB has a typical input-referred voltage noise density of 60 nV/√Hz at 1 kHz, consistent across supply voltages from 1.8V to 5.5V. This value is confirmed in both AC electrical characteristics tables and typical performance plots (Figures 46, 17–20), and remains stable over temperature and common-mode voltage.
LMP2234AMT/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-TSSOP (0.173", 4.40mm 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-TSSOP
LMP2234AMT/NOPB FAQ
1.How can I place an order for LMP2234AMT/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMP2234AMT/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 LMP2234AMT/NOPB reliable?
The price and inventory of LMP2234AMT/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMP2234AMT/NOPB is usually 5 days.
3.What payment methods are accepted for LMP2234AMT/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMP2234AMT/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMP2234AMT/NOPB?
LMP2234AMT/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMP2234AMT/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 LMP2234AMT/NOPB?
For technical support, including LMP2234AMT/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMP2234AMT/NOPB requirements.
6.How does Aetrix verify that LMP2234AMT/NOPB is sourced from the original manufacturer or authorized distributors?
All LMP2234AMT/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 LMP2234AMT/NOPB meets industry standards.
7.What is the process for return or replacement of LMP2234AMT/NOPB?
All LMP2234AMT/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMP2234AMT/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 LMP2234AMT/NOPB part is unused and in its original packaging.
Return procedure for LMP2234AMT/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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