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Texas Instruments LMP2234BMTX/NOPB
- Part No.:
- LMP2234BMTX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
LMP2234BMTX/NOPB.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,844
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Product details
Overview
LMP2234BMTX/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, 130 kHz gain bandwidth, rail-to-rail output swing within 15 mV of 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 LMP2234BMTX/NOPB datasheet, LMP2234BMTX/NOPB pinout, LMP2234BMTX/NOPB application, or LMP2234BMTX/NOPB equivalent, key selection criteria include guaranteed low TCVOS (±0.75 µV/°C max), sub-50 µA per-channel supply current at 1.8V, ±20 fA input bias current, 120 dB PSRR/CMRR, and operation across –40°C to 125°C industrial temperature range.
Technical Context
The LMP2234BMTX/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, while the output stage swings to within 15 mV of both supply rails under 10 kΩ load - supporting full dynamic range utilization in low-voltage systems.
It maintains stable operation with 130 kHz GBWP and 58 V/ms slew rate across supply voltages from 1.6V to 5.5V, with phase margin ≥64° and gain margin ≥25 dB into 20 pF capacitive loads. The device meets 120 dB open-loop gain and 97 dB CMRR at 25°C, with common-mode input range extending 200 mV below negative rail.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.6V to 5.5V - enables direct operation from single-cell Li-ion, 3.3V, or 5V rails without regulation. |
| Max Input Offset Voltage | ±150 µV - ensures ≤0.003% gain error in 100 mV full-scale sensor interfaces. |
| Max Offset Drift | ±0.75 µV/°C - limits thermal-induced error to <1.5 µV over 0–70°C ambient range. |
| Supply Current per Channel | 48 µA typical at 5V - supports >1-year battery life in 10 µA average-power portable instruments. |
| Input Bias Current | ±20 fA - preserves signal integrity in >1 GΩ source impedance applications like pH electrodes. |
| Gain Bandwidth Product | 130 kHz - sufficient for DC–10 kHz sensor signal conditioning with ≥10× closed-loop gain stability. |
| Output Swing | Rail-to-rail within 15 mV - maximizes ADC utilization in 12-bit+ systems powered from 1.8V–3.3V. |
| Operating Temperature | –40°C to +125°C - qualified for automotive cabin, industrial control, and medical body-worn environments. |
Pinout & Package
Package: 14-pin TSSOP (thin shrink small outline package), 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 signals from sensors or feedback networks. |
| 2, 6, 10, 13 | Non-inverting Input (+IN) for Channels A, B, C, D | Accepts reference, sensor, or signal inputs with ±20 fA leakage for minimal loading. |
| 3, 7, 11, 14 | Output for Channels A, B, C, D | Rail-to-rail capable, sourcing/sinking up to 30 mA, driving 10 kΩ loads to within 15 mV of rails. |
| 4 | V– (Negative Supply) | Ground reference for single-supply operation; common-mode range extends 200 mV below this pin. |
| 8 | V+ (Positive Supply) | Accepts 1.6V–5.5V; PSRR of 120 dB minimizes noise coupling from noisy digital supplies. |
Key Features
| Feature | Design Value |
|---|---|
| Micropower Operation | 31 µA supply current at 1.8V - extends battery life in portable ECG monitors and glucose meters. |
| Precision DC Performance | ±150 µV VOS and ±0.75 µV/°C TCVOS - eliminates need for system-level calibration in Class I medical devices. |
| Ultra-Low Input Bias Current | ±20 fA - prevents signal degradation in high-Z piezoelectric, thermocouple, and photodiode front-ends. |
| Rail-to-Rail Output | Swings to within 15 mV of V+ and V– - preserves full 12-bit resolution when interfacing to 3.3V SAR ADCs. |
| Wide Supply Range | 1.6V minimum - supports direct connection to coin-cell batteries (e.g., CR2032) without boost converters. |
| High PSRR/CMRR | 120 dB PSRR and 97 dB CMRR - rejects power rail noise and common-mode interference in noisy industrial settings. |
Applications
| Strain Gauge Bridge Amplifier | Thermocouple Amplifier |
|---|---|
Use Scenario: Amplifying low-level mV outputs from full-bridge strain gauges in load cells and pressure transducers. IC Role / Device Role / Timing Role: Primary instrumentation amplifier stage with precision DC gain and offset compensation. Use Value: ±150 µV VOS and ±0.75 µV/°C drift ensure <0.1% full-scale error over temperature without recalibration. |
Use Scenario: Cold-junction compensation and linearization of K-type thermocouples in HVAC and industrial controllers. IC Role / Device Role / Timing Role: Low-drift, high-input-impedance buffer and gain stage for microvolt-level thermocouple signals. Use Value: ±20 fA input bias current prevents voltage drop across thermocouple wire resistance, preserving accuracy. |
| Battery-Powered Medical Instrumentation | Precision Instrumentation Amplifiers |
Use Scenario: Front-end amplification in portable ECG, pulse oximeter, and glucose meter analog signal chains. IC Role / Device Role / Timing Role: Micropower, low-noise, rail-to-rail op amp for sensor signal conditioning and ADC driver. Use Value: 31 µA/channel at 1.8V enables multi-day operation on coin-cell batteries while maintaining 12-bit effective resolution. |
Use Scenario: Building modular, high-accuracy instrumentation amplifiers for test equipment and data acquisition systems. IC Role / Device Role / Timing Role: Precision gain block with matched quad topology minimizing inter-channel offset mismatch. Use Value: Quad configuration reduces board space and component count versus discrete dual-op-amp solutions. |
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 | Lower VOS (±2 µV typ), higher quiescent current (17 µA/ch), same 1.8V–5.5V range | Better DC accuracy but higher power - suitable where offset dominates over battery life | Select OPA2333P when <1 µV VOS drift is required; LMP2234BMTX/NOPB preferred for <50 µA/ch constraints |
| AD8602ARZ | Higher supply current (240 µA/ch), wider GBWP (8 MHz), same rail-to-rail output | Supports higher-frequency signal paths but consumes ~5× more power | Choose AD8602ARZ for AC-coupled sensor interfaces above 100 kHz; LMP2234BMTX/NOPB for DC–10 kHz micropower designs |
Compared with OPA2333P and AD8602ARZ, the LMP2234BMTX/NOPB uniquely balances sub-50 µA supply current, ±150 µV VOS, and –40°C to 125°C operation - making it optimal for long-life, wide-temperature, battery-operated precision measurement where power efficiency and DC stability are co-prioritized.
Availability
LMP2234BMTX/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 LMP2234BMTX/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 delivering analog and embedded processing solutions, with over 50 years of innovation in precision analog ICs and power management.
The LMP2234BMTX/NOPB belongs to TI's LMP™ precision amplifier family, engineered specifically for ultra-low-power, high-accuracy signal conditioning in portable and harsh-environment applications - emphasizing micropower operation, low drift, and robust performance from 1.6V supplies.
FAQ
What is the maximum operating supply voltage for the LMP2234BMTX/NOPB?
The LMP2234BMTX/NOPB has an absolute maximum supply voltage of 6V, but its specified operating range is 1.6V to 5.5V. Operation at 5.5V is fully characterized across temperature, with parameters including 48 µA supply current, 130 kHz GBWP, and 120 dB PSRR maintained per the datasheet. Exceeding 5.5V risks parametric degradation or damage.
Does the LMP2234BMTX/NOPB support rail-to-rail input common-mode range?
No - the LMP2234BMTX/NOPB features rail-to-rail *output*, but its input common-mode voltage range extends only to 200 mV below the negative rail and up to V+ – 0.2V at 5V supply. At 1.8V supply, the usable input range is –0.2V to 1.0V. This ground-sensing capability enables single-supply operation but does not cover full rail-to-rail input.
What is the guaranteed input offset voltage specification for LMP2234BMTX/NOPB?
The LMP2234BMTX/NOPB is the B-grade version, with a maximum input offset voltage of ±150 µV at 25°C and ±230 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, ensuring predictable DC error in precision sensor interfaces.
Can the LMP2234BMTX/NOPB drive a 10 kΩ load across its full temperature range?
Yes - the LMP2234BMTX/NOPB guarantees rail-to-rail output swing within 50 mV of either rail when driving a 10 kΩ load across –40°C to 125°C. At 25°C and 5V supply, typical swing is within 17 mV of each rail. Output current capability remains ≥17 mA sinking and ≥27 mA sourcing under these conditions, supporting standard ADC input buffering.
Is the LMP2234BMTX/NOPB pin-compatible with other LMP2234 variants?
Yes - all LMP2234 variants (including LMP2234AMTX/NOPB and LMP2234BMTX/NOPB) share identical 14-pin TSSOP pinout and footprint. The only differences are grade-specific electrical specifications: the 'A' grade offers tighter ±100 µV VOS and ±0.3 µV/°C TCVOS, while the 'B' grade provides cost-optimized precision at ±150 µV VOS and ±0.75 µV/°C TCVOS.
LMP2234BMTX/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
LMP2234BMTX/NOPB FAQ
1.How can I place an order for LMP2234BMTX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMP2234BMTX/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 LMP2234BMTX/NOPB reliable?
The price and inventory of LMP2234BMTX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMP2234BMTX/NOPB is usually 5 days.
3.What payment methods are accepted for LMP2234BMTX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMP2234BMTX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMP2234BMTX/NOPB?
LMP2234BMTX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMP2234BMTX/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 LMP2234BMTX/NOPB?
For technical support, including LMP2234BMTX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMP2234BMTX/NOPB requirements.
6.How does Aetrix verify that LMP2234BMTX/NOPB is sourced from the original manufacturer or authorized distributors?
All LMP2234BMTX/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 LMP2234BMTX/NOPB meets industry standards.
7.What is the process for return or replacement of LMP2234BMTX/NOPB?
All LMP2234BMTX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMP2234BMTX/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 LMP2234BMTX/NOPB part is unused and in its original packaging.
Return procedure for LMP2234BMTX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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