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Texas Instruments LMP2234BMTE/NOPB
- Part No.:
- LMP2234BMTE/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
LMP2234BMTE/NOPB.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:6,567
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Product details
Overview
LMP2234BMTE/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 input bias current, 130 kHz gain bandwidth, rail-to-rail output swing within 15 mV of supply rails, and operates from 1.6V to 5.5V - enabling high-accuracy signal conditioning in battery-powered medical devices and strain gauge bridges.
For engineers reviewing the LMP2234BMTE/NOPB datasheet, LMP2234BMTE/NOPB pinout, LMP2234BMTE/NOPB application, or LMP2234BMTE/NOPB equivalent, key selection criteria include micropower operation at 1.8V, sub-1 µV/°C offset drift (LMP2234B grade), fA-level input bias for high-impedance sensors, and guaranteed performance across –40°C to +125°C industrial temperature range.
Technical Context
The LMP2234BMTE/NOPB implements a CMOS-input, rail-to-rail output architecture optimized for single-supply operation down to 1.6V. Its input stage achieves ±20 fA bias current and ±150 µV max VOS, while the output stage swings to within 15 mV of V+ and V– under 10 kΩ load - supporting ground-sensing configurations and maximizing dynamic range in low-voltage systems.
It features 120 dB open-loop gain, 120 dB PSRR, and 97 dB CMRR at 25°C, with stable unity-gain operation into 20 pF capacitive loads. The device maintains 130 kHz GBWP and 58 V/ms slew rate across 1.8V–5.5V supply, with phase margin ≥64° and gain margin ≥25 dB - ensuring robust stability in precision DC-coupled and low-frequency AC signal paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.6V to 5.5V - enables direct operation from single-cell Li-ion, 2×AA, or regulated 3.3V/2.5V rails without level-shifting. |
| Input Offset Voltage (max) | ±150 µV - ensures ≤0.003% error in 5V full-scale measurement, critical for 16-bit+ data acquisition accuracy. |
| Offset Voltage Drift (max) | ±0.75 µV/°C (LMP2234B grade) - limits thermal drift to <0.1 mV over 100°C ambient shift, preserving calibration integrity. |
| Input Bias Current (max) | ±1 pA - permits use with >1 GΩ source impedances (e.g., pH electrodes, piezoresistive sensors) without significant error. |
| Gain Bandwidth Product | 130 kHz - supports stable amplification of DC–10 kHz signals (e.g., thermocouple, bridge outputs) with minimal phase lag. |
| Supply Current per Channel | 48 µA (typ) at 5V - enables four-channel precision amplification for <200 µA total quiescent current in portable instruments. |
| Rail-to-Rail Output Swing | Within 15 mV of V+ and V– - maximizes usable output range in 1.8V systems, delivering >1.75Vpp dynamic headroom. |
Pinout & Package
Package: 14-pin TSSOP (Thin Shrink Small Outline Package), 5.0 mm × 4.4 mm body, 0.65 mm pitch - compatible with automated SMT assembly and space-constrained PCB layouts.
| 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 guarding for fA-level bias current preservation. |
| 2, 6, 10, 13 | Non-Inverting Input (+IN) for Channels A, B, C, D | CMOS input with ±20 fA bias current; supports high-Z sources like thermocouples and photodiode transimpedance feedback. |
| 3, 7, 11, 14 | Output for Channels A, B, C, D | Rail-to-rail output capable of sourcing/sinking ≥11 mA; swings to within 15 mV of supply rails at 10 kΩ load. |
| 4 | V– (Negative Supply) | Ground reference for single-supply operation; common-mode input extends 200 mV below this pin for true ground sensing. |
| 8 | V+ (Positive Supply) | Primary power connection; supports 1.6V–5.5V operation with 120 dB PSRR rejecting supply noise up to 100 kHz. |
Key Features
| Feature | Design Value |
|---|---|
| Micropower Operation | 31 µA supply current at 1.8V - extends battery life in portable ECG monitors and handheld test equipment beyond 1 year on CR2032. |
| Precision DC Performance | ±150 µV VOS and ±0.75 µV/°C TCVOS - eliminates need for periodic auto-zeroing in industrial sensor transmitters. |
| Ultra-Low Input Bias Current | ±20 fA typical - prevents loading errors in high-impedance pH probe and piezoelectric sensor interfaces. |
| Rail-to-Rail Output | Swings within 15 mV of V+ and V– - enables full utilization of ADC input range in 1.8V microcontroller-based systems. |
| Wide Temperature Range | Specified from –40°C to +125°C - supports deployment in automotive cabin modules and industrial motor control enclosures. |
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 portable calibrators. IC Role / Device Role / Timing Role: Primary gain stage in 3-op-amp IA topology, providing 100 dB CMRR and <1 µV/°C system offset drift. Use Value: Enables 24-bit resolution with <0.005% linearity error over temperature, eliminating external trimming components. |
Use Scenario: Signal conditioning for disposable ECG electrodes in wearable Holter monitors operating on coin-cell batteries. IC Role / Device Role / Timing Role: Front-end amplifier for biopotential acquisition, rejecting electrode half-cell potential shifts via CMOS input. Use Value: Delivers 110 dB SNR at 1 kHz with 48 µA/channel current, enabling >7-day continuous recording on a single CR2032 cell. |
| High-Impedance Sensors | Strain Gauge Bridge Amplifier |
Use Scenario: Interfacing glass pH electrodes (≥1 GΩ impedance) in handheld water quality testers. IC Role / Device Role / Timing Role: Buffer and level-shifter for high-Z sensor output prior to ADC sampling. Use Value: Prevents >10 mV measurement error caused by leakage currents, maintaining ±0.02 pH accuracy across 0–100°C. |
Use Scenario: Amplifying differential output of 350 Ω Wheatstone bridges in structural health monitoring nodes. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier with matched resistor network for 1000× gain. Use Value: Achieves <5 ppm nonlinearity and <0.1 µV/√Hz noise floor, resolving sub-microstrain mechanical deformations. |
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 max) but higher IQ (17 µA/channel); chopper-stabilized architecture introduces 1/f noise and switching artifacts. | Better DC accuracy for zero-drift-critical applications; unsuitable for low-noise analog front-ends due to 0.5 µVPP switching ripple. | Select OPA2333P only when sub-µV offset dominates over noise and power constraints. |
| AD8602ARZ | Higher IBIAS (±1 pA typ vs. ±20 fA), wider VS range (2.7–6 V), no guaranteed 1.6V operation. | Compatible with 3.3V/5V systems but cannot operate from 1.8V coin cells; less suitable for ultra-low-VCM ground-sensing. | Choose AD8602ARZ when supply is ≥2.7V and fA-level input bias is not required. |
Compared with OPA2333P and AD8602ARZ, the LMP2234BMTE/NOPB uniquely balances fA-level input bias, 1.6V operation, and <0.75 µV/°C drift - making it optimal for battery-powered, high-impedance sensor nodes where power, voltage headroom, and thermal stability are co-constrained.
Availability
LMP2234BMTE/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 LMP2234BMTE/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 LMP2234BMTE/NOPB belongs to TI's LMP™ precision amplifier family, engineered specifically for micropower, high-accuracy sensor signal conditioning in portable and industrial systems where battery life and measurement fidelity are jointly critical.
FAQ
What is the maximum operating supply voltage for the LMP2234BMTE/NOPB?
The LMP2234BMTE/NOPB has an absolute maximum supply voltage of 6V, but its specified operating range is 1.6V to 5.5V. Operating above 5.5V risks permanent damage, while operation below 1.6V may cause undefined behavior or loss of rail-to-rail output capability. For reliable performance in battery-powered designs, maintain VS between 1.8V and 5.5V per the datasheet's ensured specifications.
Does the LMP2234BMTE/NOPB support true ground-sensing input common-mode range?
Yes, the LMP2234BMTE/NOPB supports a common-mode input voltage range extending 200 mV below the negative supply rail (V–). When V– = 0V (single-supply configuration), this allows inputs down to –0.2V - enabling accurate amplification of signals referenced to system ground, such as bridge outputs or thermocouple junctions, without level-shifting circuitry.
What is the guaranteed input offset voltage specification for the LMP2234BMTE/NOPB?
The LMP2234BMTE/NOPB is the B-grade variant, with a maximum input offset voltage of ±150 µV at 25°C and ±250 µV over the full –40°C to +125°C temperature range. This is explicitly defined in the "5V DC Electrical Characteristics" table of the SNOSAW4D datasheet, and applies to all four channels in the quad package.
Can the LMP2234BMTE/NOPB drive capacitive loads without instability?
The LMP2234BMTE/NOPB is characterized for stable unity-gain operation with up to 20 pF capacitive load, achieving ≥64° phase margin at 1.8V–5.5V supply. Driving larger capacitive loads (e.g., >50 pF) requires isolation resistance (e.g., 10–100 Ω in series with output) or careful layout to avoid peaking or oscillation - confirmed by Figure 37 (Phase Margin vs. Capacitive Load) in the datasheet.
Is the LMP2234BMTE/NOPB RoHS-compliant and lead-free?
Yes, the LMP2234BMTE/NOPB is RoHS-compliant and lead-free. The "/NOPB" suffix explicitly denotes "No Lead (Pb)-Free" packaging per TI's standard nomenclature. It meets JEDEC J-STD-020 moisture sensitivity level 3 (MSL-3) and is qualified for reflow soldering up to 260°C peak temperature, as verified in the Absolute Maximum Ratings table.
LMP2234BMTE/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
LMP2234BMTE/NOPB FAQ
1.How can I place an order for LMP2234BMTE/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMP2234BMTE/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 LMP2234BMTE/NOPB reliable?
The price and inventory of LMP2234BMTE/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMP2234BMTE/NOPB is usually 5 days.
3.What payment methods are accepted for LMP2234BMTE/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMP2234BMTE/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMP2234BMTE/NOPB?
LMP2234BMTE/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMP2234BMTE/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 LMP2234BMTE/NOPB?
For technical support, including LMP2234BMTE/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMP2234BMTE/NOPB requirements.
6.How does Aetrix verify that LMP2234BMTE/NOPB is sourced from the original manufacturer or authorized distributors?
All LMP2234BMTE/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 LMP2234BMTE/NOPB meets industry standards.
7.What is the process for return or replacement of LMP2234BMTE/NOPB?
All LMP2234BMTE/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMP2234BMTE/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 LMP2234BMTE/NOPB part is unused and in its original packaging.
Return procedure for LMP2234BMTE/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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