My Inquiry
My Account
Texas Instruments LMP2234AMAX/NOPB
- Part No.:
- LMP2234AMAX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LMP2234AMAX/NOPB.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,486
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LMP2234AMAX/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 strain gauge bridges.
For engineers reviewing the LMP2234AMAX/NOPB datasheet, LMP2234AMAX/NOPB pinout, LMP2234AMAX/NOPB application, or LMP2234AMAX/NOPB equivalent, key selection criteria include guaranteed low TCVOS (±0.75 µV/°C), fA-level input bias current (±20 fA), 130 kHz gain-bandwidth product at 5 V, 120 dB PSRR/CMRR, and operation down to 1.6 V supply - all validated across –40°C to +125°C.
Technical Context
The LMP2234AMAX/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 VOS with ±0.75 µV/°C drift (Grade A), while the output stage drives loads up to 30 mA and swings within 15 mV of either rail under 10 kΩ load.
It maintains stable operation across 1.6–5.5 V supply range with 130 kHz GBWP and 58 V/ms slew rate (falling edge) at 5 V, and sustains 120 dB open-loop gain and 97 dB CMRR over full common-mode range (–0.2 V to VS – 0.2 V), supporting ground-sensing configurations in portable systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.6 V to 5.5 V - enables direct interface with Li-ion, coin-cell, and low-voltage microcontrollers without regulation. |
| Input Offset Voltage (max) | ±150 µV - ensures ≤0.015% error in 1 V full-scale precision measurement circuits. |
| Offset Drift (max) | ±0.75 µV/°C - limits temperature-induced error to <1 µV over 10°C ambient shift. |
| Supply Current (per channel) | 31 µA at 1.8 V - supports >1-year runtime on a 220 mAh coin cell powering four channels continuously. |
| Input Bias Current | ±20 fA - prevents significant voltage drop across >100 GΩ sensor sources (e.g., pH electrodes, piezoresistive sensors). |
| Gain-Bandwidth Product | 130 kHz - supports stable closed-loop gain ≥10 up to 10 kHz for anti-aliasing and sensor filtering. |
| Common-Mode Input Range | –0.2 V to VS – 0.2 V - allows direct ground-referenced sensing in single-supply systems. |
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, 8, 12 | Inverting Input (–IN) for Channels 1–4 | High-impedance CMOS node accepting signals down to ground; requires guarded layout for fA bias current integrity. |
| 2, 6, 9, 13 | Non-inverting Input (+IN) for Channels 1–4 | Same high-Z CMOS input as inverting pins; supports differential, single-ended, or reference-biased configurations. |
| 3, 7, 10, 14 | Output for Channels 1–4 | Rail-to-rail output capable of sourcing/sinking ≥27 mA; swings within 15 mV of V+ or V– at 10 kΩ load. |
| 4 | V– (Negative Supply) | Ground reference for single-supply operation; must be connected directly to system ground plane. |
| 11 | V+ (Positive Supply) | Accepts 1.6–5.5 V; bypass capacitor (0.1 µF) required between Pin 11 and Pin 4 for stability. |
Key Features
| Feature | Design Value |
|---|---|
| Micropower Operation | 31 µA per channel at 1.8 V - extends battery life in portable ECG monitors and handheld test equipment. |
| Precision DC Performance | ±150 µV VOS and ±0.75 µV/°C TCVOS (Grade A) - eliminates need for system-level calibration in industrial sensor nodes. |
| Ultra-Low Input Bias Current | ±20 fA - preserves signal integrity when amplifying high-impedance sources like thermopiles or photodiodes. |
| Rail-to-Rail Output | Swings within 15 mV of V+ or V– - maximizes dynamic range in 3.3 V or lower ADC interfaces. |
| Wide Supply Range | 1.6 V to 5.5 V - interoperates with energy-harvesting PMUs and legacy 5 V logic without level-shifting. |
Applications
| Precision Instrumentation Amplifiers | Battery-Powered Medical Instrumentation |
|---|---|
Use Scenario: High-gain, low-noise front-end for portable multimeters and digital calipers measuring µV-level thermocouple outputs. IC Role / Device Role / Timing Role: Primary gain-stage amplifier in 3-op-amp IA topology, providing initial 100× amplification with minimal offset contribution. Use Value: ±150 µV VOS and ±0.75 µV/°C drift ensure calibrated accuracy remains within ±0.1°C over full operating temperature range. |
Use Scenario: Signal conditioning for wearable ECG electrodes capturing sub-mV cardiac waveforms. IC Role / Device Role / Timing Role: First-stage amplifier in lead-I/II/III analog frontend, rejecting common-mode motion artifacts while preserving ST-segment fidelity. Use Value: ±20 fA input bias current prevents electrode polarization errors; 130 kHz GBWP supports clean 150 Hz bandwidth without phase distortion. |
| High-Impedance Sensors | Strain Gauge Bridge Amplifier |
Use Scenario: Interfacing MEMS-based pressure sensors with 100+ MΩ output impedance in IoT environmental monitors. IC Role / Device Role / Timing Role: Buffer and gain stage for capacitive or resistive transducers, isolating high-Z source from PCB leakage paths. Use Value: CMOS input eliminates bias-current-induced offset errors; rail-to-rail output fully utilizes 12-bit SAR ADC reference range. |
Use Scenario: Amplifying mV-level differential output from quarter-bridge load cells in industrial weighing systems. IC Role / Device Role / Timing Role: Instrumentation amplifier core using two LMP2234AMAX/NOPB channels per bridge leg (dual-channel configuration). Use Value: 97 dB CMRR rejects power-supply ripple; 120 dB PSRR suppresses switching noise from adjacent DC/DC converters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2333AIDR | Lower VOS (±2 µV typ), higher quiescent current (17 µA per channel), same 1.8–5.5 V range | Better DC accuracy but higher power; unsuitable for multi-year coin-cell lifetime targets | Select when VOS-critical calibration-free operation outweighs battery life constraints |
| MCP6V81-E/SN | Zero-drift architecture, 0.25 µV/°C max drift, 60 µA supply current, 1.8–5.5 V range | Superior long-term drift stability but doubles supply current; limited to 85°C max ambient | Prefer for high-reliability industrial sensors requiring decade-long calibration stability |
Compared with OPA2333AIDR and MCP6V81-E/SN, the LMP2234AMAX/NOPB uniquely balances sub-µV/°C drift, fA input bias, and <35 µA/channel consumption - making it optimal for cost-sensitive, long-life, ground-sensing instrumentation where moderate VOS is acceptable.
Availability
LMP2234AMAX/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 automotive, industrial, and healthcare OEM programs.
Supply support for LMP2234AMAX/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 signal chain solutions.
The LMP2234AMAX/NOPB belongs to TI's LMP™ precision amplifier family, engineered specifically for micropower, high-accuracy sensor signal conditioning in space-constrained, battery-operated systems.
FAQ
What is the maximum operating temperature range for the LMP2234AMAX/NOPB?
The LMP2234AMAX/NOPB is specified for continuous operation from –40°C to +125°C. This extended temperature range is validated per TI's production testing and supports deployment in under-hood automotive sensors, industrial process controllers, and outdoor medical telemetry units where ambient extremes occur. All key parameters-including VOS, TCVOS, and PSRR-are ensured across this full range.
Does the LMP2234AMAX/NOPB support true rail-to-rail input operation?
No, the LMP2234AMAX/NOPB does not support rail-to-rail input. Its common-mode input voltage range extends 0.2 V below the negative rail (to –0.2 V) and up to VS – 0.2 V. This allows ground-sensing in single-supply configurations but prohibits direct connection of inputs to V+ or V– without external level shifting or clamping networks.
Can the LMP2234AMAX/NOPB drive a 10 kΩ load while maintaining rail-to-rail output swing?
Yes - the LMP2234AMAX/NOPB guarantees output swing within 15 mV of either rail when driving a 10 kΩ load to VS/2, per the Electrical Characteristics table. At 5 V supply, this means VO(H) ≥ 4.985 V and VO(L) ≤ 15 mV, delivering >99.7% of full-scale dynamic range for 12-bit ADC interfacing without gain compression.
Is the LMP2234AMAX/NOPB pin-compatible with other members of the LMP223x family?
Yes - the LMP2234AMAX/NOPB shares identical 14-pin SOIC pinout and electrical behavior with LMP2234BMAX/NOPB and LMP2234QMA/NOPB. Only the grade-specific parameters differ: Grade A guarantees ±0.75 µV/°C max TCVOS, while Grade B specifies ±2.5 µV/°C. No PCB redesign is needed when upgrading or substituting within the LMP2234 family.
What decoupling capacitance is recommended for the LMP2234AMAX/NOPB supply pin?
A minimum 0.1 µF ceramic capacitor placed between Pin 11 (V+) and Pin 4 (V–) is required for stable operation. TI recommends adding a second 1 µF–10 µF bulk capacitor nearby to suppress low-frequency supply ripple. Layout best practices include short traces, direct connection to solid ground plane, and placement within 2 mm of the device pins to minimize inductance.
LMP2234AMAX/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
LMP2234AMAX/NOPB FAQ
1.How can I place an order for LMP2234AMAX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMP2234AMAX/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 LMP2234AMAX/NOPB reliable?
The price and inventory of LMP2234AMAX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMP2234AMAX/NOPB is usually 5 days.
3.What payment methods are accepted for LMP2234AMAX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMP2234AMAX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMP2234AMAX/NOPB?
LMP2234AMAX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMP2234AMAX/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 LMP2234AMAX/NOPB?
For technical support, including LMP2234AMAX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMP2234AMAX/NOPB requirements.
6.How does Aetrix verify that LMP2234AMAX/NOPB is sourced from the original manufacturer or authorized distributors?
All LMP2234AMAX/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 LMP2234AMAX/NOPB meets industry standards.
7.What is the process for return or replacement of LMP2234AMAX/NOPB?
All LMP2234AMAX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMP2234AMAX/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 LMP2234AMAX/NOPB part is unused and in its original packaging.
Return procedure for LMP2234AMAX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LMP2234AMAX/NOPB Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
