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Texas Instruments LMP2232AMM/NOPB
- Part No.:
- LMP2232AMM/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LMP2232AMM/NOPB.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,465
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Product details
Overview
LMP2232AMM/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 interfaces in battery-powered medical instrumentation.
For engineers reviewing the LMP2232AMM/NOPB datasheet, LMP2232AMM/NOPB pinout, LMP2232AMM/NOPB application, or LMP2232AMM/NOPB equivalent, key selection criteria include ultra-low quiescent current (16 µA at 1.8V), ±0.5 µV/°C max TCVOS, 130 kHz gain-bandwidth product, 60 nV/√Hz input voltage noise at 1 kHz, and operation across –40°C to +125°C.
Technical Context
The LMP2232AMM/NOPB employs CMOS input stage architecture enabling femtoampere-level input bias current and high input impedance (>1013 Ω), critical for interfacing with high-Z sources like thermocouples and strain gauges. Its rail-to-rail output swings within 15 mV of either supply rail, maximizing dynamic range in single-supply systems.
It features precision trimming for low initial offset and drift, achieving ±150 µV VOS (max) and ±0.5 µV/°C TCVOS (LMP2232A grade), with 120 dB PSRR and 97 dB CMRR ensuring robust performance under supply and common-mode variations.
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. |
| Quiescent Current per Channel | 16 µA at 1.8V - extends battery life in portable medical and industrial sensors beyond 10 years in low-duty-cycle applications. |
| Input Offset Voltage (max) | ±150 µV - reduces DC error in precision instrumentation amplifiers without external nulling circuitry. |
| Offset Voltage Drift (max) | ±0.5 µV/°C (LMP2232A grade) - ensures long-term stability in temperature-varying environments like patient monitors. |
| Input Bias Current (typ) | 20 fA - minimizes voltage error across >1 GΩ source impedances, e.g., pH electrodes or piezoresistive sensors. |
| Gain-Bandwidth Product | 130 kHz - supports stable closed-loop gain up to ~100× at DC–1 kHz for bridge amplifier and thermocouple conditioning. |
| Output Swing | Rail-to-rail, within 15 mV of V+ or V− - delivers full-scale signal headroom in 1.8V–3.3V microcontroller ADC interfaces. |
Pinout & Package
Package: 8-pin VSSOP (DGK0008A), 3.0 mm × 3.0 mm, 0.65 mm pitch - compact footprint suitable for space-constrained wearable and implantable devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (Channel A) | High-impedance CMOS node accepting differential signals from sensors or feedback networks. |
| 2 | Non-Inverting Input (Channel A) | Reference or sensor-side input; supports common-mode voltages down to 200 mV below V−. |
| 3 | Output (Channel A) | Rail-to-rail output capable of sourcing/sinking ≥11 mA (at 3.3V) into 10 kΩ loads. |
| 4 | V− (Ground/Ref) | Negative supply terminal; also serves as reference for single-supply operation (0V typical). |
| 5 | Non-Inverting Input (Channel B) | Independent high-Z input for second sensor channel or reference buffer. |
| 6 | Inverting Input (Channel B) | Differential input for second amplifier stage; electrically isolated from Channel A. |
| 7 | Output (Channel B) | Second rail-to-rail output; fully independent with no crosstalk specified ≤ –100 dB. |
| 8 | V+ | Positive supply rail; accepts 1.6V–5.5V with 120 dB PSRR rejecting ripple and noise. |
Key Features
| Feature | Design Value |
|---|---|
| Micropower operation | 16 µA/channel at 1.8V enables >10-year battery life in intermittent-sampling IoT sensor nodes. |
| Ultra-low input bias current | 20 fA typical eliminates loading errors on high-impedance sources (e.g., glass pH electrodes, photodiode transimpedance stages). |
| Precision offset and drift | ±150 µV VOS max and ±0.5 µV/°C TCVOS (A-grade) reduce calibration frequency in field-deployed instrumentation. |
| Rail-to-rail output | Swings within 15 mV of V+ or V−, preserving >99% of available dynamic range for 12-bit+ ADCs in low-voltage systems. |
| Wide temperature range | Specified from –40°C to +125°C supports operation in automotive engine compartments and industrial process controllers. |
Applications
| Precision Instrumentation Amplifiers | Battery-Powered Medical Instrumentation |
|---|---|
Use Scenario: High-gain, low-noise front-end for ECG, EEG, or blood glucose meters requiring sub-µV DC accuracy. IC Role / Device Role / Timing Role: Dual-channel precision op amp configured as 3-op-amp IA with matched gain-setting resistors. Use Value: 20 fA input bias prevents electrode polarization error; ±150 µV VOS avoids baseline drift during multi-hour monitoring sessions. |
Use Scenario: Portable pulse oximeter with analog front-end processing photodiode currents and ambient light rejection. IC Role / Device Role / Timing Role: Dual amplifier for transimpedance conversion and reference buffering in low-power, single-supply design. Use Value: 1.6V minimum supply allows direct use of coin-cell batteries; 60 nV/√Hz noise preserves SNR in weak optical signal detection. |
| High-Impedance Sensors | Strain Gauge Bridge Amplifier |
Use Scenario: Interface to ceramic humidity sensors, MEMS accelerometers, or ion-selective electrodes with >10 GΩ output impedance. IC Role / Device Role / Timing Role: Non-inverting amplifier with guard-driven PCB layout to minimize leakage paths. Use Value: 20 fA IBIAS ensures <1 µV error across 10 GΩ source, eliminating need for guarded connectors or active guarding circuits. |
Use Scenario: Wheatstone bridge excitation and differential amplification in load cells and pressure transducers. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier using one LMP2232AMM/NOPB channel for bridge sensing and second for reference buffering. Use Value: ±0.5 µV/°C TCVOS prevents thermal zero-drift in untemperature-compensated bridges; 130 kHz GBW supports 100 Hz bridge modulation. |
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 IBIAS, but only rated to 125°C (not 125°C extended temp). | Preferred where ultra-low offset dominates over extended temperature range; not suitable for automotive under-hood use. | Select OPA2333AIDR when VOS budget is tighter than temperature range requirement. |
| AD8603ARZ-REEL7 | Higher supply current (50 µA), wider VS range (2.7–5.5V), higher GBW (400 kHz), but IBIAS = 1 pA (50× higher than LMP2232AMM/NOPB). | Better for higher-speed sensor interfaces; unsuitable for >1 GΩ source impedances due to elevated bias current. | Select AD8603ARZ-REEL7 when bandwidth >130 kHz is required and source impedance <100 MΩ. |
Compared with OPA2333AIDR and AD8603ARZ-REEL7, the LMP2232AMM/NOPB uniquely balances femtoampere input bias, extended temperature rating, and micropower consumption-making it optimal for long-life, high-impedance, wide-temperature sensor nodes where offset drift and leakage are dominant error sources.
Availability
LMP2232AMM/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 industrial, healthcare, and aerospace programs.
Supply support for LMP2232AMM/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 innovation in precision signal chain components.
The LMP™ precision amplifier family-including the LMP2232AMM/NOPB-is engineered for ultra-low-power, high-accuracy sensor signal conditioning in portable, medical, and industrial measurement systems.
FAQ
What is the maximum operating temperature for the LMP2232AMM/NOPB?
The LMP2232AMM/NOPB is fully specified from –40°C to +125°C, with all electrical characteristics guaranteed across this range. This makes the LMP2232AMM/NOPB suitable for under-hood automotive, industrial process control, and high-reliability medical equipment where ambient temperatures exceed 100°C.
Does the LMP2232AMM/NOPB support true rail-to-rail input?
No-the LMP2232AMM/NOPB has rail-to-rail *output*, but its common-mode input voltage range extends only 200 mV below V− and up to V+ − 1.2 V. For example, at V+ = 3.3V and V− = 0V, valid input common-mode range is –0.2 V to 2.1 V. The LMP2232AMM/NOPB is optimized for ground-sensing in single-supply configurations, not full rail-to-rail input.
Is the LMP2232AMM/NOPB pin-compatible with other LMP22xx variants?
Yes-the LMP2232AMM/NOPB shares identical 8-pin VSSOP pinout with LMP2231 (single) and LMP2234 (quad) in the same family. Pin functions (e.g., IN–, IN+, OUT, V+, V−) are consistent across all three, enabling scalable design reuse and layout compatibility across channel-count variants.
What is the typical input voltage noise density of the LMP2232AMM/NOPB at 1 kHz?
The LMP2232AMM/NOPB has a typical input-referred voltage noise density of 60 nV/√Hz at 1 kHz, consistent across supply voltages from 1.8V to 5V. This value is confirmed in both AC Electrical Characteristics tables and Typical Performance Characteristics (Figure 46), supporting low-noise signal conditioning in precision sensor front-ends.
Can the LMP2232AMM/NOPB drive capacitive loads directly?
The LMP2232AMM/NOPB is stable with capacitive loads up to 100 pF when driving a 10 kΩ load (per Figure 37). For larger capacitive loads (e.g., ADC inputs or long traces), an isolation resistor (≥100 Ω) between output and capacitance is recommended to maintain phase margin >60° and prevent peaking or oscillation.
LMP2232AMM/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
LMP2232AMM/NOPB FAQ
1.How can I place an order for LMP2232AMM/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMP2232AMM/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 LMP2232AMM/NOPB reliable?
The price and inventory of LMP2232AMM/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMP2232AMM/NOPB is usually 5 days.
3.What payment methods are accepted for LMP2232AMM/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMP2232AMM/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMP2232AMM/NOPB?
LMP2232AMM/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMP2232AMM/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 LMP2232AMM/NOPB?
For technical support, including LMP2232AMM/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMP2232AMM/NOPB requirements.
6.How does Aetrix verify that LMP2232AMM/NOPB is sourced from the original manufacturer or authorized distributors?
All LMP2232AMM/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 LMP2232AMM/NOPB meets industry standards.
7.What is the process for return or replacement of LMP2232AMM/NOPB?
All LMP2232AMM/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMP2232AMM/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 LMP2232AMM/NOPB part is unused and in its original packaging.
Return procedure for LMP2232AMM/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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