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Texas Instruments LMP2232AMA/NOPB
- Part No.:
- LMP2232AMA/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LMP2232AMA/NOPB.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,314
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Product details
Overview
LMP2232AMA/NOPB from Texas Instruments is a dual micropower precision operational amplifier with CMOS input, rail-to-rail output, 1.6V to 5.5V supply range, ±150 µV max input offset voltage, and 20 fA typical input bias current-designed for high-impedance sensor interface in battery-powered medical instrumentation.
For engineers reviewing the LMP2232AMA/NOPB datasheet, LMP2232AMA/NOPB pinout, LMP2232AMA/NOPB application, or LMP2232AMA/NOPB equivalent, key selection criteria include ultra-low quiescent current (16 µA at 1.8V), sub-0.5 µV/°C TCVOS (max), rail-swing capability within 15 mV of supply rails, and operation down to –40°C for industrial-grade portable systems.
Technical Context
The LMP2232AMA/NOPB employs a CMOS input stage enabling femtoampere-level input bias current and wide common-mode input range extending 200 mV below the negative rail-critical for ground-sensing single-supply configurations. Its micropower architecture delivers 130 kHz gain-bandwidth product and 58 V/ms slew rate while maintaining 120 dB open-loop gain and 120 dB PSRR across 1.6–5.5V operation.
It features internal compensation for stable unity-gain operation with capacitive loads up to 100 pF, supports rail-to-rail output swing (15 mV from rails at RL = 10 kΩ), and achieves 97 dB CMRR with 60 nV/√Hz input voltage noise at 1 kHz-enabling precision DC-coupled amplification in low-power analog front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.6V to 5.5V - enables direct operation from single-cell Li-ion (3.0–3.7V), coin cell (1.8–3.0V), or regulated 3.3V/5V rails without level-shifting. |
| Quiescent Current | 16 µA at 1.8V - extends battery life in continuous-monitoring devices such as wearable ECG sensors or portable gas analyzers. |
| Input Offset Voltage | ±150 µV (max) - ensures <0.015% gain error in 10 V full-scale instrumentation amplifier stages without trimming. |
| Offset Drift | ±0.5 µV/°C (max, LMP2232A grade) - maintains <0.5 µV total drift over –40°C to +85°C ambient, critical for uncalibrated field-deployed sensors. |
| Input Bias Current | 20 fA (typical) - minimizes voltage error across >100 MΩ source impedances (e.g., pH electrodes, piezoresistive strain gauges). |
| Output Swing | Rail-to-rail, within 15 mV of V+ or V− at RL = 10 kΩ - maximizes dynamic range in 3.3V ADC interfaces with 0–3.3V input spans. |
| Gain-Bandwidth Product | 130 kHz - supports stable DC-coupled amplification of low-frequency biosignals (ECG, EEG) and slow-process transducers (thermocouples, RTDs). |
Pinout & Package
Package: 8-pin SOIC (D0008A), body size 3.91 mm × 4.90 mm, standard JEDEC MS-012AC footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (Channel A) | High-impedance CMOS node accepting differential signals from precision bridges or transducer outputs. |
| 2 | Non-Inverting Input (Channel A) | Accepts reference or sensor signal; supports common-mode range down to V− − 0.2 V for ground-referenced sensing. |
| 3 | Output (Channel A) | Rail-to-rail output capable of sourcing/sinking ≥27 mA (at 5V), driving 10 kΩ loads within 15 mV of supply rails. |
| 4 | V− (Ground/Reference) | Negative supply terminal; serves as circuit ground in single-supply configurations; must be low-impedance. |
| 5 | Non-Inverting Input (Channel B) | Independent high-Z input for second sensor channel; identical specs to Pin 2. |
| 6 | Inverting Input (Channel B) | Independent high-Z input for differential feedback or second transducer leg; identical specs to Pin 1. |
| 7 | Output (Channel B) | Independent rail-to-rail output; electrically isolated from Channel A except via shared supply pins. |
| 8 | V+ | Positive supply input; accepts 1.6–5.5V; decoupling capacitor (0.1 µF) required adjacent to pin for stability. |
Key Features
| Feature | Design Value |
|---|---|
| Micropower Operation | 16 µA per channel at 1.8V enables >1-year battery life in AA-powered data loggers sampling at 1 Hz. |
| Precision DC Performance | ±150 µV VOS and ±0.5 µV/°C TCVOS eliminate need for system-level calibration in Class II medical devices. |
| Ultra-Low Input Bias Current | 20 fA bias current prevents loading errors in high-Z sources like glass pH electrodes or photodiode transimpedance stages. |
| Rail-to-Rail Output | Swings within 15 mV of V+ or V− at 10 kΩ load, preserving >99% of 3.3V ADC input range without external level-shifting. |
| Wide Temperature Range | Specified from –40°C to +125°C junction temperature-supports deployment in automotive cabin sensors and industrial process controllers. |
Applications
| Precision Instrumentation Amplifiers | Battery-Powered Medical Instrumentation |
|---|---|
Use Scenario: High-gain, low-noise amplification of microvolt-level signals from thermocouples or strain gauge bridges in handheld calibrators. IC Role / Device Role / Timing Role: Primary gain stage in 3-op-amp instrumentation topology, providing differential-to-single-ended conversion with matched VOS and TCVOS across channels. Use Value: Enables <1 µV input-referred offset error over temperature, meeting IEC 60601-1 accuracy requirements for portable patient monitors. |
Use Scenario: Front-end amplification of ECG electrode signals in disposable patch monitors powered by CR2032 coin cells. IC Role / Device Role / Timing Role: First-stage amplifier with high input impedance and low power consumption, directly interfacing Ag/AgCl electrodes. Use Value: 20 fA input bias current prevents polarization voltage buildup on dry electrodes, ensuring stable baseline over 72-hour wear time. |
| High Impedance Sensors | Strain Gauge Bridge Amplifier |
Use Scenario: Signal conditioning for MEMS-based pressure sensors with >1 GΩ internal impedance in IoT environmental nodes. IC Role / Device Role / Timing Role: Buffer and gain stage for capacitive or resistive sensor elements operating in low-power duty-cycled mode. Use Value: 16 µA quiescent current allows 10-second wake-up intervals while maintaining <100 nA average system current budget. |
Use Scenario: Wheatstone bridge excitation and differential amplification in load-cell interfaces for industrial weighing terminals. IC Role / Device Role / Timing Role: Dual-channel configuration used for bridge excitation control (Channel A) and differential output amplification (Channel B). Use Value: Matched channel VOS and TCVOS minimize thermal drift-induced zero-error in unattended 24/7 operation. |
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 | Higher quiescent current (17 µA vs. 16 µA), lower VOS (±10 µV typ), same 20 fA IB, but only rated to 85°C ambient. | Better DC accuracy for lab-grade equipment; unsuitable for under-hood automotive or extended-temperature industrial use. | Select OPA2333AIDR when sub-10 µV VOS is mandatory and temperature range ≤85°C. |
| MAX44260ASA+ | Lower supply current (900 nA), wider VOS range (±250 µV max), higher GBW (450 kHz), but requires ≥2.7V supply. | Superior battery life in ultra-low-power IoT nodes; incompatible with 1.8V-only systems or precision DC applications needing <150 µV VOS. | Select MAX44260ASA+ only for sub-µA sleep-mode systems where VOS tolerance >250 µV is acceptable. |
Compared with OPA2333AIDR and MAX44260ASA+, the LMP2232AMA/NOPB uniquely balances ultra-low power (16 µA), precision (±150 µV VOS), and extended temperature support (–40°C to +125°C) in a single 8-pin SOIC package-making it optimal for certified medical and harsh-environment industrial designs where all three attributes are non-negotiable.
Availability
LMP2232AMA/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 LMP2232AMA/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 the LMP2232AMA/NOPB-is engineered for ultra-low-power, high-accuracy analog signal conditioning in battery-constrained and thermally demanding applications.
FAQ
What is the maximum operating temperature for the LMP2232AMA/NOPB?
The LMP2232AMA/NOPB is specified for operation from –40°C to +125°C junction temperature. This extended range enables reliable use in automotive engine compartments, industrial motor drives, and outdoor medical telemetry devices where ambient temperatures exceed 85°C. The device's ±0.5 µV/°C TCVOS (max) ensures minimal drift across this full span.
Does the LMP2232AMA/NOPB support true rail-to-rail input?
No-the LMP2232AMA/NOPB features rail-to-rail *output*, but its common-mode input voltage range extends only to V− − 0.2 V and V+ − 1.2 V (at 5V supply). It does *not* accept inputs beyond the rails. However, the –0.2 V extension below V− enables ground-referenced single-supply operation, a key design advantage for sensor front-ends.
Can the LMP2232AMA/NOPB drive a 10 kΩ load across its full temperature range?
Yes-the LMP2232AMA/NOPB guarantees rail-to-rail output swing within 50 mV of either supply rail when driving 10 kΩ loads across –40°C to +125°C. At 25°C and 5V supply, output swing is within 17 mV of the rails. This performance is maintained even at minimum 1.6V supply, making it robust for varying battery voltages.
Is the LMP2232AMA/NOPB pin-compatible with other LMP22xx variants?
Yes-the LMP2232AMA/NOPB (dual) shares identical 8-pin SOIC pinout with the LMP2231 (single, 8-pin SOIC) and LMP2234 (quad, 14-pin SOIC). However, the LMP2231 uses only Pins 1–5 and 7–8, leaving Pin 6 unconnected; direct substitution requires PCB layout verification for unused pins and channel count alignment.
What decoupling is recommended for the LMP2232AMA/NOPB supply pins?
A 0.1 µF ceramic capacitor placed as close as possible to Pin 8 (V+) and Pin 4 (V−) is mandatory for stability. For systems with noisy supplies or high-frequency coupling, add a 1–10 µF tantalum or aluminum electrolytic capacitor in parallel. TI's datasheet Figure 32 confirms stable operation with CL ≤ 100 pF and proper local decoupling.
LMP2232AMA/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LMP®
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- 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:
- 19µA (x2 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:
- 8-SOIC
LMP2232AMA/NOPB FAQ
1.How can I place an order for LMP2232AMA/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMP2232AMA/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 LMP2232AMA/NOPB reliable?
The price and inventory of LMP2232AMA/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMP2232AMA/NOPB is usually 5 days.
3.What payment methods are accepted for LMP2232AMA/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMP2232AMA/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMP2232AMA/NOPB?
LMP2232AMA/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMP2232AMA/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 LMP2232AMA/NOPB?
For technical support, including LMP2232AMA/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMP2232AMA/NOPB requirements.
6.How does Aetrix verify that LMP2232AMA/NOPB is sourced from the original manufacturer or authorized distributors?
All LMP2232AMA/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 LMP2232AMA/NOPB meets industry standards.
7.What is the process for return or replacement of LMP2232AMA/NOPB?
All LMP2232AMA/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMP2232AMA/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 LMP2232AMA/NOPB part is unused and in its original packaging.
Return procedure for LMP2232AMA/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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