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Texas Instruments LMP2232AMMX/NOPB
- Part No.:
- LMP2232AMMX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LMP2232AMMX/NOPB.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,403
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Product details
Overview
LMP2232AMMX/NOPB from Texas Instruments is a dual 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, ±0.5 µV/°C max offset drift, 20 fA input bias current, 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 LMP2232AMMX/NOPB datasheet, LMP2232AMMX/NOPB pinout, LMP2232AMMX/NOPB application, or LMP2232AMMX/NOPB equivalent, key selection criteria include micropower operation at 1.8V (16 µA/channel), precision DC specs over –40°C to 125°C, low-noise performance (60 nV/√Hz @ 1 kHz), and compatibility with single-supply ground-sensing topologies.
Technical Context
The LMP2232AMMX/NOPB employs a CMOS input stage delivering ultra-low input bias current (20 fA typical) and high input impedance (>1013 Ω), making it suitable for high-impedance sensor front-ends such as thermocouples and piezoresistive bridges. Its precision architecture ensures stable DC performance across temperature and supply voltage variations.
It features rail-to-rail output with 15 mV headroom at 5V, common-mode input range extending 200 mV below negative rail, and internal compensation for unity-gain stability with capacitive loads up to 100 pF. The device maintains 120 dB open-loop gain and 120 dB PSRR across its full 1.6V–5.5V operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.6V to 5.5V - supports direct connection to Li-ion, coin-cell, and low-voltage microcontroller I/O domains. |
| Supply Current per Channel | 16 µA @ 1.8V - enables multi-year battery life in portable instrumentation and wearable sensors. |
| Input Offset Voltage (max) | ±150 µV - minimizes DC error in precision gain stages without trimming or calibration. |
| Offset Voltage Drift (max) | ±0.5 µV/°C - ensures long-term stability in industrial environments with wide ambient temperature swings. |
| Input Bias Current (typ) | 20 fA - preserves signal integrity when interfacing with >1 GΩ source impedances (e.g., pH electrodes, photodiodes). |
| Gain-Bandwidth Product | 130 kHz - sufficient for DC-coupled sensor amplification and low-frequency filtering (e.g., <100 Hz bio-signals). |
| Output Swing | Rail-to-rail with ≤15 mV saturation margin - maximizes dynamic range in single-supply systems. |
| Operating Temperature | –40°C to +125°C - qualified for automotive under-hood and industrial control applications. |
Pinout & Package
Package: 8-pin VSSOP (DGK0008A), 3.0 mm × 3.0 mm, 0.65 mm pitch, thin-profile surface-mount package optimized for space-constrained portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (Channel A) | High-impedance node for feedback network connection; accepts signals down to 200 mV below V–. |
| 2 | Non-Inverting Input (Channel A) | High-Z sensor interface point; bias current <20 fA avoids loading high-resistance sources. |
| 3 | Output (Channel A) | Rail-to-rail output capable of sourcing/sinking ≥27 mA; swings within 15 mV of V+ or V–. |
| 4 | V– (Ground/Ref) | Negative supply terminal; common reference for both channels and input common-mode range extension. |
| 5 | Non-Inverting Input (Channel B) | Independent high-Z input for second sensor channel or reference buffer function. |
| 6 | Inverting Input (Channel B) | Dedicated feedback node for second amplifier; electrically isolated from Channel A inputs. |
| 7 | Output (Channel B) | Second rail-to-rail output; fully independent operation allows dual-path signal conditioning. |
| 8 | V+ | Positive supply rail; powers both amplifiers; supports 1.6V–5.5V operation with stable quiescent current. |
Key Features
| Feature | Design Value |
|---|---|
| Micropower operation | 16 µA/channel @ 1.8V enables >10-year battery life in coin-cell-powered IoT nodes. |
| Precision DC performance | ±150 µV VOS and ±0.5 µV/°C TCVOS eliminate need for system-level offset calibration. |
| CMOS input stage | 20 fA IBIAS prevents signal attenuation in high-Z sensor interfaces (e.g., strain gauges, thermistors). |
| Rail-to-rail output | Swings to within 15 mV of V+ or V–, maximizing usable voltage range in 1.8V/2.5V systems. |
| Extended common-mode range | Inputs operate 200 mV below V–, enabling true ground-referenced sensing in single-supply configurations. |
| Low noise density | 60 nV/√Hz @ 1 kHz supports accurate amplification of µV-level sensor outputs without added noise floor. |
Applications
| Precision Instrumentation Amplifiers | Battery-Powered Medical Instrumentation |
|---|---|
Use Scenario: High-gain, low-drift front-end for portable ECG or blood glucose meters requiring stable baseline over temperature and battery discharge. IC Role / Device Role / Timing Role: Dual-channel precision op amp configured as differential input stage and reference buffer. Use Value: 20 fA input bias current avoids electrode polarization errors; 120 dB CMRR rejects common-mode interference from body-coupled noise. |
Use Scenario: Signal conditioning for wearable pulse oximeters using low-current red/IR photodiode arrays. IC Role / Device Role / Timing Role: Transimpedance amplifier and DC-coupled gain stage for analog front-end. Use Value: 16 µA/channel supply current extends coin-cell lifetime beyond 2 years; rail-to-rail output drives ADC input directly. |
| High Impedance Sensors | Strain Gauge Bridge Amplifier |
Use Scenario: Interface to pH electrodes or capacitive humidity sensors where leakage current must be minimized. IC Role / Device Role / Timing Role: Unity-gain buffer isolating high-Z sensor from downstream circuitry. Use Value: 20 fA input bias current prevents measurement drift caused by sensor leakage; 120 dB PSRR rejects supply ripple in shared power domains. |
Use Scenario: Wheatstone bridge excitation and differential amplification in load cells and pressure transducers. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier with matched gain-setting resistors. Use Value: ±150 µV VOS and ±0.5 µV/°C drift ensure sub-0.1% full-scale error over industrial temperature range. |
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 supply current (17 µA vs. 16 µA), zero-drift architecture (0.02 µV/°C drift), lower VOS (10 µV max) | Better for zero-drift-critical applications; less suitable for ultra-low-quiescent systems where every nanoamp counts | Select OPA2333AIDR when long-term drift dominates error budget; retain LMP2232AMMX/NOPB for strict micropower constraints. |
| MCP6V82-E/SN | Zero-drift design, 1.6V min supply, but higher quiescent current (65 µA/channel) and larger SOIC-8 footprint | Preferred for cost-sensitive industrial sensors where board area and power are secondary to offset stability | Choose MCP6V82-E/SN when PCB real estate permits larger package and system can tolerate 4× higher supply current. |
Compared with OPA2333AIDR and MCP6V82-E/SN, the LMP2232AMMX/NOPB uniquely balances sub-20 µA quiescent current with <0.5 µV/°C drift and 20 fA bias - making it optimal for battery-powered precision analog front-ends where power, size, and DC accuracy are simultaneously constrained.
Availability
LMP2232AMMX/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 LMP2232AMMX/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 LMP2232AMMX/NOPB belongs to TI's LMP™ precision amplifier family, engineered specifically for ultra-low-power, high-accuracy sensor signal conditioning in portable and harsh-environment applications.
FAQ
What is the maximum operating supply voltage for the LMP2232AMMX/NOPB?
The LMP2232AMMX/NOPB has an absolute maximum supply voltage of 6V, but its specified operating range is 1.6V to 5.5V. Operation above 5.5V risks permanent damage, while operation below 1.6V may result in undefined output behavior or failure to meet guaranteed specifications such as gain or CMRR. Always refer to the Electrical Characteristics tables for validated performance across this 1.6V–5.5V window.
Does the LMP2232AMMX/NOPB support rail-to-rail input operation?
No, the LMP2232AMMX/NOPB does not support rail-to-rail input. Its common-mode input voltage range extends 200 mV below the negative supply (V–) and up to 200 mV below the positive supply (V+) depending on supply voltage - for example, 0 V to 4.2 V at V+ = 5 V. This allows ground-sensing capability in single-supply systems but excludes direct connection of inputs to V+ or V– rails without external level-shifting.
What is the guaranteed input offset voltage specification for the LMP2232AMMX/NOPB?
The LMP2232AMMX/NOPB is specified with a maximum input offset voltage of ±150 µV at TA = 25°C and V+ = 5 V. This limit applies across the full operating temperature range (–40°C to +125°C) for the "A" grade variant, as confirmed in the DC Electrical Characteristics table. The "B" grade offers ±250 µV max, but LMP2232AMMX/NOPB corresponds to the tighter "A" grade.
Can the LMP2232AMMX/NOPB drive capacitive loads without oscillation?
Yes, the LMP2232AMMX/NOPB is internally compensated for unity-gain stability with capacitive loads up to 100 pF, as verified in Figure 37 (Phase Margin vs. Capacitive Load). At 20 pF load, phase margin exceeds 68° across all supply voltages (1.8V–5.5V); stability remains robust even with 50–100 pF loads when used in non-inverting configurations with adequate layout practices.
Is the LMP2232AMMX/NOPB pin-compatible with other members of the LMP223x family?
Yes, the LMP2232AMMX/NOPB shares identical 8-pin VSSOP pinout with the LMP2231 (single) and LMP2234 (quad) variants. Pin functions - including V+, V–, inverting/non-inverting inputs, and outputs - are consistent across the family, enabling scalable design reuse. However, channel count and thermal characteristics differ, so layout and thermal management must be re-evaluated for each variant.
LMP2232AMMX/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LMP®
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- 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-VSSOP
LMP2232AMMX/NOPB FAQ
1.How can I place an order for LMP2232AMMX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMP2232AMMX/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 LMP2232AMMX/NOPB reliable?
The price and inventory of LMP2232AMMX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMP2232AMMX/NOPB is usually 5 days.
3.What payment methods are accepted for LMP2232AMMX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMP2232AMMX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMP2232AMMX/NOPB?
LMP2232AMMX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMP2232AMMX/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 LMP2232AMMX/NOPB?
For technical support, including LMP2232AMMX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMP2232AMMX/NOPB requirements.
6.How does Aetrix verify that LMP2232AMMX/NOPB is sourced from the original manufacturer or authorized distributors?
All LMP2232AMMX/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 LMP2232AMMX/NOPB meets industry standards.
7.What is the process for return or replacement of LMP2232AMMX/NOPB?
All LMP2232AMMX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMP2232AMMX/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 LMP2232AMMX/NOPB part is unused and in its original packaging.
Return procedure for LMP2232AMMX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LMP2232AMMX/NOPB Tags
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