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Texas Instruments LMP2234AMTE/NOPB
- Part No.:
- LMP2234AMTE/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
LMP2234AMTE/NOPB.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:461
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Product details
Overview
LMP2234AMTE/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, 31 µA supply current at 1.8 V, rail-to-rail output swing within 15 mV of rails, and operates from 1.6 V to 5.5 V - enabling high-accuracy signal conditioning in battery-powered medical devices and portable instrumentation.
For engineers reviewing the LMP2234AMTE/NOPB datasheet, LMP2234AMTE/NOPB pinout, LMP2234AMTE/NOPB application, or LMP2234AMTE/NOPB equivalent, key selection considerations include its guaranteed low TCVOS over –40°C to +125°C, ±20 fA input bias current, 130 kHz gain-bandwidth product at 5 V, and compatibility with single-supply ground-sensing configurations due to extended common-mode input range (–0.2 V below negative rail).
Technical Context
The LMP2234AMTE/NOPB implements a CMOS-input, rail-to-rail output architecture optimized for precision DC-coupled amplification in energy-constrained systems. Its input stage uses high-impedance p-channel MOSFETs to achieve ±20 fA typical input bias current and enables direct interfacing with high-impedance sensors such as strain gauges and thermocouples without significant loading error.
It features a unity-gain-stable internal compensation scheme supporting stable operation with capacitive loads up to 100 pF, maintains ≥120 dB open-loop gain and ≥97 dB CMRR across its full operating temperature range, and sustains functional performance down to 1.6 V supply - making it suitable for legacy 1.8 V and emerging ultra-low-voltage microcontroller-based data acquisition systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.6 V to 5.5 V - supports direct integration into 1.8 V, 2.5 V, 3.3 V, and 5 V systems without level-shifting. |
| Input Offset Voltage (max) | ±150 µV - ensures ≤0.015% gain error in 10 V full-scale instrumentation amplifier designs. |
| TCVOS (max) | ±0.75 µV/°C - limits offset drift to <1 µV over 0–70°C ambient, critical for uncalibrated long-term measurements. |
| Supply Current per Channel (typ) | 31 µA at 1.8 V - enables four-channel precision amplification with <125 µA total quiescent draw, extending coin-cell battery life to years. |
| Input Bias Current (max) | ±1 pA - prevents measurable voltage error across >1 GΩ source impedances (e.g., pH electrodes, piezoresistive sensors). |
| Gain Bandwidth Product | 130 kHz at 5 V - provides sufficient bandwidth for DC–100 Hz sensor signals (e.g., ECG, pressure transducers) with stable phase margin. |
| Common-Mode Input Range | –0.2 V to (V+ – 0.2 V) - allows true ground-referenced input sensing on single supplies, eliminating need for negative rail generation. |
Pinout & Package
Package: 14-pin TSSOP (Thin Shrink Small Outline Package), 5.0 mm × 4.4 mm body, 0.65 mm pitch, 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 inputs; requires guarded PCB traces for sub-pA leakage control. |
| 2, 6, 10, 13 | Non-inverting Input (+IN) for Channels A, B, C, D | Accepts reference, sensor, or feedback signals; common-mode range extends 200 mV below V– for ground-sensing. |
| 3, 7, 11, 14 | Output for Channels A, B, C, D | Rail-to-rail output capable of sourcing/sinking ≥11 mA; swings within 15 mV of V+ and V– at 10 kΩ load. |
| 4 | V– (Negative Supply) | Ground reference for single-supply operation; must be connected directly to system ground plane with low-inductance path. |
| 8 | V+ (Positive Supply) | Primary power input; decoupling capacitor (0.1 µF ceramic) required within 5 mm of pin for stability at all supply voltages. |
Key Features
| Feature | Design Value |
|---|---|
| Micropower Operation | 31 µA/channel at 1.8 V enables multi-year battery life in portable diagnostic equipment and wearable biosensors. |
| Precision DC Performance | Guaranteed ±150 µV VOS and ±0.75 µV/°C TCVOS support uncalibrated 16-bit-equivalent resolution in low-frequency measurement chains. |
| Ultra-Low Input Bias Current | ±20 fA typical bias current preserves signal integrity when amplifying outputs from glass pH electrodes or high-Z MEMS sensors. |
| Rail-to-Rail Output | Swings to within 15 mV of both supply rails, maximizing dynamic range and simplifying ADC interface design in 3.3 V and lower systems. |
| Extended Temperature Range | Specified from –40°C to +125°C, allowing deployment in automotive cabin modules and industrial process controllers without derating. |
Applications
| Strain Gauge Bridge Amplifier | Thermocouple Amplifier |
|---|---|
Use Scenario: Amplifying low-level mV outputs from full-bridge strain gauges in load cells and structural health monitoring systems. IC Role / Device Role / Timing Role: Primary instrumentation amplifier front-end, configured in 3-op-amp topology with matched LMP2234AMTE/NOPB channels for gain, offset nulling, and filtering. Use Value: Sub-µV/°C drift and <150 µV initial offset enable <0.05% full-scale accuracy without factory calibration across temperature. | Use Scenario: Cold-junction compensation and linearization of Type-K thermocouple outputs in portable temperature loggers. IC Role / Device Role / Timing Role: Precision cold-junction sensor amplifier and thermocouple signal conditioner, leveraging rail-to-rail output to drive 12-bit SAR ADC references. Use Value: ±20 fA input bias current eliminates error from series resistance in thermocouple extension wires; 1.6 V min supply supports operation from lithium primary cells. |
| Battery-Powered Medical Instrumentation | Precision Instrumentation Amplifiers |
Use Scenario: Front-end amplification of ECG, EEG, or EMG bio-signals in handheld patient monitors and point-of-care diagnostics. IC Role / Device Role / Timing Role: First-stage low-noise, low-drift amplifier with high CMRR to reject 50/60 Hz mains interference and electrode half-cell potentials. Use Value: 97 dB CMRR and 120 dB PSRR suppress common-mode noise; 60 nV/√Hz input voltage noise preserves SNR for µV-level neural signals. | Use Scenario: Building modular, reconfigurable instrumentation-grade amplifiers for lab-grade multimeters and calibration standards. IC Role / Device Role / Timing Role: Core precision op-amp in programmable gain, zero-drift, and auto-zero architectures requiring matched channel characteristics. Use Value: Tight VOS and TCVOS matching across four channels enables precise chopper-stabilized topologies and reduces inter-channel crosstalk in multiplexed systems. |
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 | Zero-drift architecture; 0.02 µV/°C max TCVOS vs. LMP2234AMTE/NOPB's ±0.75 µV/°C; higher 350 kHz GBW but 55 µA supply current. | Preferred for sub-µV drift-critical metrology; less suitable for <10 µA-per-channel ultra-low-power designs. | Select OPA2333P when absolute drift minimization outweighs battery life requirements. |
| MCP6V81-E/SN | Zero-drift; 0.25 µV/°C max TCVOS; 1.8 V to 5.5 V supply; 65 µA supply current; only dual-channel, not quad. | Requires two packages for quad functionality; better for space-constrained designs needing lowest possible drift. | Choose MCP6V81-E/SN when board area is constrained and dual-channel count suffices. |
Compared with OPA2333P and MCP6V81-E/SN, the LMP2234AMTE/NOPB offers the lowest quiescent current among precision quad op-amps with guaranteed sub-µV/°C drift, making it uniquely suited for always-on, long-duration portable instrumentation where µA-level power budgets are non-negotiable.
Availability
LMP2234AMTE/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 and medical OEM programs.
Supply support for LMP2234AMTE/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 company specializing in analog and embedded processing technologies, with leadership in precision analog signal chain solutions.
The LMP™ precision amplifier family, including the LMP2234AMTE/NOPB, was engineered specifically for ultra-low-power, high-accuracy sensor signal conditioning in portable and energy-constrained systems - emphasizing micropower operation without sacrificing DC precision.
FAQ
What is the maximum operating temperature range for the LMP2234AMTE/NOPB?
The LMP2234AMTE/NOPB is fully specified from –40°C to +125°C. All key parameters - including input offset voltage, offset drift, common-mode rejection ratio, and supply current - are ensured across this extended industrial temperature range, enabling reliable use in automotive under-hood modules and industrial process controllers without thermal derating.
Does the LMP2234AMTE/NOPB support true single-supply ground-sensing operation?
Yes. The LMP2234AMTE/NOPB features a common-mode input voltage range that extends 200 mV below the negative supply rail (V–). When V– is grounded, this allows input signals down to –0.2 V to be accurately amplified - enabling direct connection of ground-referenced sensors like bridge circuits and thermocouples without level-shifting circuitry.
What is the minimum supply voltage at which the LMP2234AMTE/NOPB remains fully functional?
The LMP2234AMTE/NOPB operates down to 1.6 V, with all electrical characteristics guaranteed across the full 1.6 V to 5.5 V range. At 1.8 V, it draws only 31 µA per channel and maintains 127 kHz gain-bandwidth product and 58 V/ms slew rate - making it compatible with modern low-voltage microcontrollers and energy-harvesting power sources.
How does the input bias current of the LMP2234AMTE/NOPB impact high-impedance sensor interfacing?
The LMP2234AMTE/NOPB specifies ±20 fA typical and ±1 pA maximum input bias current. This enables accurate amplification of signals from sensors with source impedances up to 10 GΩ - such as pH electrodes, photodiode transimpedance stages, and piezoelectric elements - without introducing measurable offset or drift errors caused by bias current flowing through sensor impedance.
Is the LMP2234AMTE/NOPB pin-compatible with other members of the LMP223x family?
Yes. The LMP2234AMTE/NOPB shares identical 14-pin TSSOP pinout and electrical behavior with the LMP2234MTE/NOPB (standard grade) and LMP2234QMA/NOPB (automotive AEC-Q100 qualified), differing only in tested parameter limits (e.g., VOS, TCVOS) and qualification level. No PCB redesign is needed when upgrading between these variants.
LMP2234AMTE/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-TSSOP (0.173", 4.40mm 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-TSSOP
LMP2234AMTE/NOPB FAQ
1.How can I place an order for LMP2234AMTE/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMP2234AMTE/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 LMP2234AMTE/NOPB reliable?
The price and inventory of LMP2234AMTE/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMP2234AMTE/NOPB is usually 5 days.
3.What payment methods are accepted for LMP2234AMTE/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMP2234AMTE/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMP2234AMTE/NOPB?
LMP2234AMTE/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMP2234AMTE/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 LMP2234AMTE/NOPB?
For technical support, including LMP2234AMTE/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMP2234AMTE/NOPB requirements.
6.How does Aetrix verify that LMP2234AMTE/NOPB is sourced from the original manufacturer or authorized distributors?
All LMP2234AMTE/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 LMP2234AMTE/NOPB meets industry standards.
7.What is the process for return or replacement of LMP2234AMTE/NOPB?
All LMP2234AMTE/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMP2234AMTE/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 LMP2234AMTE/NOPB part is unused and in its original packaging.
Return procedure for LMP2234AMTE/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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