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Texas Instruments LMP2232AMME/NOPB
- Part No.:
- LMP2232AMME/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LMP2232AMME/NOPB.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:191
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Product details
Overview
LMP2232AMME/NOPB from Texas Instruments is a dual micropower precision operational amplifier with CMOS input, rail-to-rail output, ±150 µV max input offset voltage, ±0.5 µV/°C max offset drift, and 20 fA input bias current - designed for high-impedance sensor interface and battery-powered medical instrumentation.
For engineers reviewing the LMP2232AMME/NOPB datasheet, LMP2232AMME/NOPB pinout, LMP2232AMME/NOPB application, or LMP2232AMME/NOPB equivalent, key selection criteria include ultra-low supply current (16 µA at 1.8 V), 1.6 V to 5.5 V single-supply operation, −40°C to 125°C temperature range, and guaranteed rail-to-rail output swing within 15 mV of rails.
Technical Context
The LMP2232AMME/NOPB employs a CMOS input stage enabling femtoampere-level input bias current and high input impedance (>1013 Ω), critical for interfacing with high-impedance sources like strain gauges and thermocouples. Its micropower architecture delivers stable DC precision (low VOS, low TCVOS) while maintaining 130 kHz gain-bandwidth product and 58 V/ms slew rate across 1.6–5.5 V supply.
It supports single-supply operation with common-mode input range extending 200 mV below V− and rail-to-rail output swing (15 mV from rails), enabling ground-sensing configurations without level-shifting. PSRR (120 dB) and CMRR (97 dB) ensure robust performance in noisy, low-voltage portable systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.6 V to 5.5 V - enables direct integration into coin-cell (1.8 V), Li-ion (3.3 V), or multi-cell (5 V) powered systems without regulation. |
| Supply Current (per channel) | 16 µA at 1.8 V - extends battery life in continuous-sensing applications such as wearable medical monitors. |
| Input Offset Voltage (max) | ±150 µV - ensures <0.015% error in 1 V full-scale precision amplification without trimming. |
| Offset Drift (max) | ±0.5 µV/°C - limits thermal-induced error to <0.06 µV over 125°C industrial temperature range. |
| Input Bias Current (typ) | 20 fA - preserves signal integrity when amplifying picoamp-level currents from pH electrodes or photodiodes. |
| Gain-Bandwidth Product | 130 kHz - supports stable closed-loop gain up to 100× at DC–1.3 kHz for sensor signal conditioning. |
| Output Swing | Within 15 mV of V+ and V− - maximizes dynamic range in single-supply 3.3 V systems (e.g., 0.015–3.285 V output). |
Pinout & Package
Package: 8-pin VSSOP (DGK0008A), 2.3 mm × 2.0 mm, 0.5 mm pitch - optimized for space-constrained portable PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (Channel A) | High-impedance node accepting differential signal; requires guarded trace routing to preserve 20 fA bias current spec. |
| 2 | Non-Inverting Input (Channel A) | CMOS input with rail-to-rail common-mode range down to 200 mV below V− - enables ground-referenced sensing. |
| 3 | Output (Channel A) | Rail-to-rail output capable of sourcing/sinking ≥11 mA at 3.3 V - drives 10 kΩ loads directly without buffer. |
| 4 | V− (Ground) | Reference return for both channels; must be low-impedance path to minimize noise coupling into high-Z inputs. |
| 5 | Non-Inverting Input (Channel B) | Independent high-Z input identical to Pin 2 - allows dual-sensor simultaneous acquisition with matched specs. |
| 6 | Inverting Input (Channel B) | Matches Pin 1 electrical behavior; supports independent feedback networks per channel. |
| 7 | Output (Channel B) | Electrically isolated from Channel A output; enables dual-path signal conditioning on single die. |
| 8 | V+ | Positive supply rail; accepts 1.6–5.5 V; PSRR of 120 dB suppresses ripple from switching regulators. |
Key Features
| Feature | Design Value |
|---|---|
| Micropower operation | 16 µA/channel at 1.8 V enables >10-year battery life in always-on environmental sensors. |
| Ultra-low input bias current | 20 fA enables accurate amplification of signals from >1 GΩ source impedances (e.g., glass pH electrodes). |
| Precision DC performance | ±150 µV VOS and ±0.5 µV/°C TCVOS eliminate need for system-level calibration in medical-grade analog front-ends. |
| Rail-to-rail output | Swings within 15 mV of V+ and V− - preserves >99% of available dynamic range in 3.3 V systems. |
| Extended temperature range | Specified from −40°C to +125°C - suitable for automotive cabin sensors and industrial process monitoring. |
Applications
| Strain Gauge Bridge Amplifier | Thermocouple Amplifier |
|---|---|
Use Scenario: Amplifying low-level mV outputs from full-bridge strain gauges in load cells or structural health monitoring. IC Role / Device Role / Timing Role: Precision instrumentation amplifier front-end with high CMRR (97 dB) rejecting bridge excitation noise. Use Value: 20 fA input bias current prevents bridge imbalance errors; rail-to-rail output maximizes ADC utilization in 12-bit+ data acquisition. |
Use Scenario: Cold-junction compensation and linearization of K-type thermocouple outputs in portable temperature loggers. IC Role / Device Role / Timing Role: Low-drift, low-noise preamplifier with extended common-mode range for direct connection to thermocouple junctions. Use Value: ±0.5 µV/°C offset drift minimizes temperature measurement drift; 1.6 V operation supports coin-cell-powered handheld units. |
| Battery-Powered Medical Instrumentation | Precision Instrumentation Amplifiers |
Use Scenario: Signal conditioning in portable ECG or pulse oximetry devices requiring long battery runtime and clinical-grade accuracy. IC Role / Device Role / Timing Role: Dual-channel analog front-end providing simultaneous lead I/II amplification with matched gain and offset. Use Value: 16 µA/channel supply current enables >500 hours of continuous operation on a CR2032; 60 nV/√Hz input noise preserves SNR in sub-µV biopotential signals. |
Use Scenario: Building modular, reconfigurable precision measurement systems for lab equipment and calibration standards. IC Role / Device Role / Timing Role: Dual op-amp core enabling programmable gain stages, filtering, and reference buffering in compact 8-pin footprint. Use Value: SOIC/VSSOP package compatibility allows drop-in replacement in legacy designs; 130 kHz GBW supports active filter implementation up to 10 kHz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2333AIDGKR | Higher quiescent current (17 µA vs. 16 µA), lower offset (±10 µV), but narrower supply range (1.8–5.5 V). | Preferred where ultra-low offset dominates over minimum supply voltage; not suitable for 1.6 V systems. | Select OPA2333AIDGKR if offset-critical DC accuracy outweighs 1.6 V operation and board space is unconstrained. |
| MCP6V82-E/SN | Lower supply current (11 µA), higher GBW (1 MHz), but higher offset (±250 µV) and limited temp range (−40°C to 125°C same). | Better for AC-coupled or bandwidth-sensitive applications; less suitable for high-precision DC measurements. | Select MCP6V82-E/SN when system prioritizes power efficiency and bandwidth over DC precision and low-noise performance. |
Compared with OPA2333AIDGKR and MCP6V82-E/SN, the LMP2232AMME/NOPB uniquely balances 1.6 V operation, femtoampere input bias, and sub-µV/°C drift - making it optimal for ultra-low-voltage, high-impedance DC sensor interfaces where supply headroom and thermal stability are non-negotiable.
Availability
LMP2232AMME/NOPB is available at Aetrix Electronics and suitable for precision instrumentation amplifiers, battery-powered medical instrumentation, and high-impedance sensor interface applications requiring stable component supply across industrial and medical production cycles.
Supply support for LMP2232AMME/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 LMP2232AMME/NOPB belongs to TI's LMP™ precision amplifier family, engineered specifically for micropower, high-accuracy sensor signal conditioning in portable and harsh-environment applications.
FAQ
What is the minimum operating supply voltage for the LMP2232AMME/NOPB?
The LMP2232AMME/NOPB operates down to 1.6 V, enabling direct use with single alkaline or lithium coin-cell batteries without voltage boosting. This specification is guaranteed across the full −40°C to +125°C temperature range and is validated in TI's official datasheet (SNOSB02C, Section "Operating Ratings"). The LMP2232AMME/NOPB maintains precision performance-including 16 µA supply current and rail-to-rail output-at this minimum voltage.
Does the LMP2232AMME/NOPB support rail-to-rail input common-mode range?
No-the LMP2232AMME/NOPB supports rail-to-rail *output*, but its common-mode input voltage range extends only to 200 mV below V− and up to V+ − 0.2 V (at 5 V supply). At 1.8 V supply, the usable common-mode range is −0.2 V to 1.0 V. This design enables true ground-sensing capability in single-supply configurations while preserving CMRR >75 dB, as confirmed in the 1.8 V DC Electrical Characteristics table of the LMP2232AMME/NOPB datasheet.
What is the guaranteed maximum input offset voltage for the LMP2232AMME/NOPB?
The LMP2232AMME/NOPB has a maximum input offset voltage of ±150 µV at 25°C and ±230 µV over the full −40°C to +125°C temperature range (per 1.8 V DC Electrical Characteristics table). This limit applies to the "A" grade variant (denoted by "A" in LMP2232A), which the LMP2232AMME/NOPB implements. The value is production-tested and specified in TI's SNOSB02C datasheet under "DC Electrical Characteristics."
Can the LMP2232AMME/NOPB drive capacitive loads without instability?
Yes-the LMP2232AMME/NOPB is stable with capacitive loads up to 100 pF when driving a 10 kΩ resistive load, as verified by phase margin measurements ≥60° across supply voltages (1.8–5.5 V) in Figure 37 of the datasheet. For loads >100 pF, external isolation resistance (e.g., 10–50 Ω in series with the output) is recommended to maintain stability, particularly in high-impedance sensor buffering applications.
Is the LMP2232AMME/NOPB pin-compatible with other members of the LMP223x family?
Yes-the LMP2232AMME/NOPB shares identical 8-pin VSSOP (DGK) and SOIC (D) pinouts with the LMP2231 (single) and LMP2234 (quad) variants. Pin functions (e.g., Inverting Input A = Pin 1, Output B = Pin 7) are consistent across all three devices, enabling scalable design reuse. This compatibility is explicitly documented in TI's LMP2232 datasheet "Connection Diagram" (Figure 2) and family comparison tables.
LMP2232AMME/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
LMP2232AMME/NOPB FAQ
1.How can I place an order for LMP2232AMME/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMP2232AMME/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 LMP2232AMME/NOPB reliable?
The price and inventory of LMP2232AMME/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMP2232AMME/NOPB is usually 5 days.
3.What payment methods are accepted for LMP2232AMME/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMP2232AMME/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMP2232AMME/NOPB?
LMP2232AMME/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMP2232AMME/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 LMP2232AMME/NOPB?
For technical support, including LMP2232AMME/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMP2232AMME/NOPB requirements.
6.How does Aetrix verify that LMP2232AMME/NOPB is sourced from the original manufacturer or authorized distributors?
All LMP2232AMME/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 LMP2232AMME/NOPB meets industry standards.
7.What is the process for return or replacement of LMP2232AMME/NOPB?
All LMP2232AMME/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMP2232AMME/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 LMP2232AMME/NOPB part is unused and in its original packaging.
Return procedure for LMP2232AMME/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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