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Texas Instruments LMP2234AMAE/NOPB
- Part No.:
- LMP2234AMAE/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LMP2234AMAE/NOPB.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,302
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Product details
Overview
LMP2234AMAE/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.
For engineers reviewing the LMP2234AMAE/NOPB datasheet, LMP2234AMAE/NOPB pinout, LMP2234AMAE/NOPB application, or LMP2234AMAE/NOPB equivalent, key selection considerations include its guaranteed low TCVOS (±0.75 µV/°C), fA-level input bias current (±20 fA), 120 dB PSRR/CMRR, 130 kHz gain-bandwidth product, and operation down to 1.6 V - critical for long-life portable instrumentation and precision bridge amplifiers.
Technical Context
The LMP2234AMAE/NOPB implements a CMOS-input, rail-to-rail output architecture optimized for single-supply operation with common-mode input range extending 200 mV below the negative rail. Its precision performance is maintained across 1.6–5.5 V supply and −40°C to +125°C temperature range, supported by internal trimming for low VOS and TCVOS.
Each of the four independent amplifiers features 120 dB open-loop gain, 120 dB PSRR, 97 dB CMRR, and 60 nV/√Hz input voltage noise at 1 kHz. The device uses dielectrically isolated CMOS process technology to achieve ±20 fA input bias current and stable operation with capacitive loads up to 100 pF.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.6 V to 5.5 V - enables direct operation from single Li-ion, coin cell, or regulated 3.3 V/2.5 V rails without level-shifting. |
| Max Input Offset Voltage | ±150 µV - ensures ≤0.015% gain error in 10 V full-scale precision instrumentation amplifier configurations. |
| Max Offset Drift | ±0.75 µV/°C (LMP2234A grade) - limits total offset shift to <1.5 µV over 20°C ambient change, critical for uncalibrated field deployments. |
| Supply Current per Channel | 31 µA at 1.8 V - supports >10-year battery life in continuous-sensing IoT nodes powered by CR2032 cells. |
| Input Bias Current | ±20 fA - preserves signal integrity when interfacing high-impedance sources like pH electrodes or piezoresistive sensors (>1 GΩ source impedance). |
| Gain Bandwidth Product | 130 kHz - provides sufficient bandwidth for DC–10 kHz sensor signal conditioning including thermocouples and strain gauges. |
| Output Swing | Rail-to-rail with 15 mV headroom - maximizes dynamic range in 1.8 V or 3.3 V systems, delivering >99% of supply voltage swing. |
Pinout & Package
Package: 14-pin TSSOP (MAE suffix), RoHS-compliant, moisture sensitivity level 1, thermal resistance θJA = 121 °C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 5, 9, 12 | Inverting Input (−) | High-impedance CMOS node; accepts signals down to 200 mV below V−; requires guarded layout for fA bias current preservation. |
| 2, 6, 10, 13 | Non-inverting Input (+) | Identical CMOS input structure to inverting input; matched input capacitance enables balanced noise rejection in differential configurations. |
| 3, 7, 11, 14 | Output | Rail-to-rail CMOS output stage; drives ≥10 kΩ load while maintaining 15 mV swing margin; stable with 20–100 pF capacitive loads. |
| 4 | V− (Ground/Ref) | Negative supply terminal; common reference for all four amplifiers; supports true ground-sensing operation in single-supply systems. |
| 8 | V+ | Positive supply input; supplies all four channels; decoupling capacitor (0.1 µF) required within 1 cm for PSRR optimization. |
Key Features
| Feature | Design Value |
|---|---|
| Micropower Operation | 31 µA/channel at 1.8 V enables multi-year operation on coin-cell batteries in portable diagnostic equipment. |
| Ultra-Low Input Bias Current | ±20 fA allows direct connection to >1 GΩ sensors (e.g., glass pH electrodes) without significant offset error or signal loading. |
| Precision Offset Performance | Guaranteed ±150 µV VOS and ±0.75 µV/°C TCVOS eliminate need for system-level nulling in medical-grade analog front-ends. |
| Rail-to-Rail Output | Swings within 15 mV of V+ and V− across full temperature range, maximizing ADC utilization in low-voltage data acquisition systems. |
| Wide Supply Range | 1.6–5.5 V operation supports direct integration into legacy 5 V, modern 3.3 V, and emerging 1.8 V microcontroller-based platforms. |
Applications
| Precision Instrumentation Amplifiers | Battery-Powered Medical Instrumentation |
|---|---|
Use Scenario: High-gain, low-drift amplification of millivolt-level signals from Wheatstone bridges in portable pressure transducers. IC Role / Device Role / Timing Role: Primary gain stage in 3-op-amp instrumentation topology, providing initial 100× amplification with minimal added offset and noise. Use Value: Enables sub-0.1% total measurement error over −20°C to +70°C without calibration, meeting ISO 80601 clinical accuracy requirements. |
Use Scenario: Analog front-end for wearable ECG monitors powered by rechargeable Li-ion cells. IC Role / Device Role / Timing Role: Buffer and filter stage for electrode-sensed biopotentials prior to 24-bit sigma-delta ADC sampling. Use Value: 60 nV/√Hz input noise and fA bias current preserve P-wave morphology fidelity; 31 µA quiescent current extends runtime to >72 hours per charge. |
| High-Impedance Sensors | Strain Gauge Bridge Amplifier |
Use Scenario: Signal conditioning for MEMS-based accelerometers with integrated capacitive sensing elements. IC Role / Device Role / Timing Role: Charge amplifier converting femtofarad capacitance shifts into measurable voltage outputs. Use Value: ±20 fA input bias current prevents charge leakage errors; rail-to-rail output fully utilizes 1.8 V ADC reference, improving SNR by 3.5 dB. |
Use Scenario: Amplification of differential output from quarter-bridge strain gauges in structural health monitoring nodes. IC Role / Device Role / Timing Role: First-stage differential amplifier with gain of 100 in standard 3-op-amp configuration. Use Value: ±0.75 µV/°C drift ensures <0.05% FS error over industrial temperature range; 120 dB CMRR rejects common-mode noise from motor drives. |
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 VOS (±2 µV typ), higher GBWP (350 kHz), but 55 µA supply current - 77% higher than LMP2234AMAE/NOPB. | Better for high-speed precision applications; less suitable for multi-year battery life targets. | Select OPA2333P when offset-critical DC accuracy outweighs micropower constraints. |
| AD8604ARUZ | Higher supply current (420 µA), wider VOS range (±650 µV max), but superior slew rate (5 V/µs) and lower noise (12 nV/√Hz). | Preferred for audio or fast transient response; not viable for sub-100 µA power budgets. | Choose AD8604ARUZ only when bandwidth and speed supersede battery longevity and ultra-low-offset requirements. |
Compared with OPA2333P and AD8604ARUZ, LMP2234AMAE/NOPB uniquely balances sub-150 µV offset, fA input bias, and <35 µA supply current - making it the only option among the three capable of sustaining >5-year operation on a single CR2032 in always-on sensor nodes.
Availability
LMP2234AMAE/NOPB is available at Aetrix Electronics and suitable for precision instrumentation amplifiers, battery-powered medical instrumentation, high-impedance sensors, strain gauge bridge amplifiers, and thermocouple amplifiers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LMP2234AMAE/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 LMP™ precision amplifier family - including LMP2234AMAE/NOPB - was engineered specifically for ultra-low-power, high-accuracy sensor interface applications in portable and energy-constrained systems.
FAQ
What is the maximum operating temperature for LMP2234AMAE/NOPB?
LMP2234AMAE/NOPB is rated for continuous operation from −40°C to +125°C. This extended temperature range is validated per TI's production testing and enables use in automotive under-hood modules, industrial process controllers, and outdoor medical telemetry devices where ambient temperatures exceed 85°C.
Does LMP2234AMAE/NOPB support rail-to-rail input operation?
No, LMP2234AMAE/NOPB does not support rail-to-rail input. Its common-mode input voltage range extends 200 mV below V− and up to (V+ − 0.2 V) at room temperature - sufficient for ground-sensing in single-supply configurations but not full rail coverage. Input signals must remain within this specified CMVR to maintain guaranteed CMRR and offset performance.
Is LMP2234AMAE/NOPB pin-compatible with other LMP2234 variants?
Yes, LMP2234AMAE/NOPB shares identical pinout and footprint with all LMP2234 variants in the 14-pin TSSOP package (e.g., LMP2234MAE/NOPB, LMP2234BMAE/NOPB). Differences are limited to internal trimming - A-grade guarantees ±0.75 µV/°C TCVOS, while B-grade specifies ±2.5 µV/°C - with no impact on physical or electrical compatibility.
Can LMP2234AMAE/NOPB drive capacitive loads directly?
Yes, LMP2234AMAE/NOPB is stable driving capacitive loads up to 100 pF with 10 kΩ series resistance, as confirmed by phase margin measurements ≥64° across 1.8–5.5 V supply. For loads >20 pF, a 10–100 Ω isolation resistor is recommended between output and capacitance to prevent peaking or oscillation in high-impedance sensor buffer configurations.
What is the typical input voltage noise density of LMP2234AMAE/NOPB at 1 kHz?
The typical input voltage noise density of LMP2234AMAE/NOPB is 60 nV/√Hz at 1 kHz, consistent across all tested supply voltages (1.8 V to 5.5 V) and temperatures. This value is specified in the AC Electrical Characteristics tables and verified in Figure 46 of the official datasheet SNOSAW4D.
LMP2234AMAE/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
LMP2234AMAE/NOPB FAQ
1.How can I place an order for LMP2234AMAE/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMP2234AMAE/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 LMP2234AMAE/NOPB reliable?
The price and inventory of LMP2234AMAE/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMP2234AMAE/NOPB is usually 5 days.
3.What payment methods are accepted for LMP2234AMAE/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMP2234AMAE/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMP2234AMAE/NOPB?
LMP2234AMAE/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMP2234AMAE/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 LMP2234AMAE/NOPB?
For technical support, including LMP2234AMAE/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMP2234AMAE/NOPB requirements.
6.How does Aetrix verify that LMP2234AMAE/NOPB is sourced from the original manufacturer or authorized distributors?
All LMP2234AMAE/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 LMP2234AMAE/NOPB meets industry standards.
7.What is the process for return or replacement of LMP2234AMAE/NOPB?
All LMP2234AMAE/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMP2234AMAE/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 LMP2234AMAE/NOPB part is unused and in its original packaging.
Return procedure for LMP2234AMAE/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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