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Texas Instruments LMP2232BMAE/NOPB
- Part No.:
- LMP2232BMAE/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LMP2232BMAE/NOPB.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:828
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Product details
Overview
LMP2232BMAE/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 LMP2232BMAE/NOPB datasheet, LMP2232BMAE/NOPB pinout, LMP2232BMAE/NOPB application, or LMP2232BMAE/NOPB equivalent, key selection criteria include micropower operation at 1.8V (16 µA/channel), precision DC specs over –40°C to 125°C, low 1/f noise (2.3 µVPP, 0.1–10 Hz), and compatibility with single-supply ground-sensing topologies.
Technical Context
The LMP2232BMAE/NOPB implements a CMOS-input folded-cascode architecture optimized for low quiescent current and high DC precision. Its input stage achieves 20 fA bias current and 97 dB CMRR while maintaining stable operation with capacitive loads up to 100 pF and phase margin ≥60° across 1.8V–5.5V supply range.
It supports rail-to-rail output swing (15 mV from rails) and extends common-mode input range 200 mV below V–, enabling true ground-referenced sensing in single-supply systems. The device is specified for guaranteed performance across –40°C to 125°C with no minimum load requirement.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.6V to 5.5V - enables direct operation from single-cell Li-ion, coin cell, or 3.3V/5V rails without regulation. |
| Max Input Offset Voltage | ±150 µV - ensures ≤0.015% gain error in 10 V full-scale instrumentation amplifiers without trimming. |
| Max Offset Drift | ±0.5 µV/°C (LMP2232B grade) - limits thermal drift to <0.5 mV over 100°C ambient shift in portable sensors. |
| Input Bias Current | ±20 fA - preserves signal integrity in >1 GΩ source impedances (e.g., pH electrodes, piezoresistive sensors). |
| Gain-Bandwidth Product | 130 kHz - supports stable closed-loop gain ≥100 at DC–1 kHz for precision transducer signal chains. |
| Output Swing | Rail-to-rail with 15 mV headroom - maximizes dynamic range in 1.8V–3.3V systems, delivering >3.0Vpp output on 3.3V supply. |
| Input Voltage Noise | 60 nV/√Hz @ 1 kHz; 2.3 µVPP (0.1–10 Hz) - suitable for low-frequency DC-coupled measurements like thermocouples and bridge sensors. |
Pinout & Package
Package: 8-pin VSSOP (DGK0008A), 2.3 mm × 2.0 mm, 0.5 mm pitch - optimized for space-constrained portable PCBs and automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (Channel A) | High-impedance CMOS node accepting differential signals; requires guarded layout for <10 fA leakage paths. |
| 2 | Non-Inverting Input (Channel A) | Accepts reference or sensor signal; common-mode range extends 200 mV below V– for ground-sensing. |
| 3 | Output (Channel A) | Rail-to-rail output capable of sourcing/sinking ≥11 mA (3.3V); drives 10 kΩ loads to within 14 mV of rails. |
| 4 | V– (Ground/Ref) | Negative supply terminal; serves as analog ground reference for single-supply operation. |
| 5 | Non-Inverting Input (Channel B) | Independent input for second channel; electrically isolated from Channel A per datasheet isolation spec. |
| 6 | Inverting Input (Channel B) | Matched to Pin 1; supports dual-channel differential configurations (e.g., dual bridge arms). |
| 7 | Output (Channel B) | Identical performance to Pin 3; enables independent signal paths without crosstalk degradation (CMRR ≥97 dB). |
| 8 | V+ | Positive supply input; accepts 1.6V–5.5V; PSRR ≥120 dB minimizes supply ripple coupling into output. |
Key Features
| Feature | Design Value |
|---|---|
| Micropower Operation | 16 µA/channel at 1.8V - extends 10-year battery life in wireless sensor nodes using CR2032 cells. |
| Precision DC Performance | Guaranteed ±150 µV VOS and ±0.5 µV/°C TCVOS over full temperature range - eliminates need for system-level calibration. |
| True Single-Supply Support | Input common-mode range to V– – 0.2V and rail-to-rail output - enables direct interfacing to 0V-referenced bridges and thermistors. |
| Low 1/f Noise | 2.3 µVPP (0.1–10 Hz) - critical for stable DC offset in medical ECG front-ends and precision weigh scales. |
| High PSRR & CMRR | 120 dB PSRR and 97 dB CMRR - rejects power supply ripple and common-mode interference in noisy industrial environments. |
Applications
| Precision Instrumentation Amplifiers | Battery-Powered Medical Instrumentation |
|---|---|
Use Scenario: High-gain, low-drift amplification of microvolt-level signals from load cells and pressure transducers in handheld calibrators. IC Role / Device Role / Timing Role: Primary gain stage in 3-op-amp IA topology, providing matched input bias and ultra-low offset drift. Use Value: Enables 24-bit effective resolution without auto-zeroing circuitry, reducing BOM count and board area by 30% vs. chopper alternatives. |
Use Scenario: Front-end amplification of biopotential signals (ECG, EMG) in wearable patch monitors powered by 3.7V Li-ion batteries. IC Role / Device Role / Timing Role: First-stage amplifier with high input impedance and low noise, directly connected to dry electrodes. Use Value: 20 fA input bias prevents electrode polarization errors; 16 µA quiescent current extends runtime to >7 days per charge. |
| High Impedance Sensors | Strain Gauge Bridge Amplifier |
Use Scenario: Signal conditioning for pH electrodes and ion-selective sensors requiring >10 GΩ source impedance compatibility. IC Role / Device Role / Timing Role: Buffer and level-shifter between high-Z sensor and ADC input, minimizing loading-induced drift. Use Value: 20 fA bias current ensures <0.1 mV measurement error over 10-second sampling intervals, meeting ISO 15197 glucose meter accuracy requirements. |
Use Scenario: Differential amplification of millivolt outputs from quarter-bridge strain gauges in structural health monitoring sensors. IC Role / Device Role / Timing Role: Dual-channel configured as difference amplifier + reference buffer, rejecting common-mode bridge excitation noise. Use Value: 97 dB CMRR suppresses 50/60 Hz mains interference; rail-to-rail output delivers full-scale ADC utilization on 3.3V supplies. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMP2232MM/NOPB | VSSOP-8 package, identical electrical specs and grade (B), same 0.5 mm pitch but 2.0 mm × 2.3 mm footprint. | Same functional use; preferred where board space allows standard VSSOP land pattern. | Select when standard VSSOP assembly processes are already qualified; no design change required beyond footprint alignment. |
| OPA2333AIDR | Chopper-stabilized architecture; 0.02 µV/°C drift, 600 nA supply current, 350 kHz GBW - higher power, lower drift. | Better for sub-µV drift-critical applications (e.g., precision DAC buffers); unsuitable for <10 µA power budgets. | Choose only if drift <0.1 µV/°C is mandatory and 35× higher supply current is acceptable. |
Compared with LMP2232BMAE/NOPB, LMP2232MM/NOPB offers identical performance in a functionally equivalent package, while OPA2333AIDR trades 35× higher current for 10× lower drift - making LMP2232BMAE/NOPB optimal for micropower precision where <20 µA/channel is non-negotiable.
Availability
LMP2232BMAE/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 LMP2232BMAE/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 heritage in precision op amps and low-power signal chain solutions.
The LMP™ precision amplifier family, including LMP2232BMAE/NOPB, was engineered specifically for micropower, high-accuracy sensor signal conditioning in portable and battery-operated systems - prioritizing DC precision, ultra-low IQ, and robust single-supply operation.
FAQ
What is the maximum operating temperature range for the LMP2232BMAE/NOPB?
The LMP2232BMAE/NOPB is fully specified from –40°C to +125°C ambient temperature. All key parameters - including input offset voltage, offset drift, CMRR, and supply current - are guaranteed across this extended industrial temperature range, making it suitable for under-hood automotive sensors and industrial field instruments.
Does the LMP2232BMAE/NOPB support true rail-to-rail input operation?
No, the LMP2232BMAE/NOPB does not support rail-to-rail input. Its common-mode input voltage range extends to V– – 0.2 V and up to V+ – 0.2 V (at 5V supply), enabling ground-sensing capability below the negative rail but not full rail-to-rail input. The output, however, swings within 15 mV of both supply rails.
What is the guaranteed input offset voltage specification for LMP2232BMAE/NOPB?
The LMP2232BMAE/NOPB has a maximum input offset voltage of ±150 µV at TA = 25°C, with worst-case drift of ±0.5 µV/°C over temperature. This specification applies to the "B" grade variant explicitly identified in the datasheet's Electrical Characteristics tables for 1.8V, 2.5V, 3.3V, and 5V supply conditions.
Can the LMP2232BMAE/NOPB drive capacitive loads without instability?
Yes, the LMP2232BMAE/NOPB is stable driving capacitive loads up to 100 pF with a phase margin ≥60°, as verified in Figure 37 of the datasheet. For loads >100 pF, external series resistance (≥100 Ω) at the output is recommended to maintain stability in high-precision applications.
Is the LMP2232BMAE/NOPB pin-compatible with other members of the LMP223x family?
Yes, the LMP2232BMAE/NOPB shares identical pinout and package dimensions with LMP2232AMAE/NOPB (A-grade), LMP2232MM/NOPB (same VSSOP-8), and LMP2231/LMP2234 variants in matching packages - enabling drop-in replacement within the same package type without PCB modification.
LMP2232BMAE/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LMP®
- Package/Case:
- 8-SOIC (0.154", 3.90mm 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-SOIC
LMP2232BMAE/NOPB FAQ
1.How can I place an order for LMP2232BMAE/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMP2232BMAE/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 LMP2232BMAE/NOPB reliable?
The price and inventory of LMP2232BMAE/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMP2232BMAE/NOPB is usually 5 days.
3.What payment methods are accepted for LMP2232BMAE/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMP2232BMAE/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMP2232BMAE/NOPB?
LMP2232BMAE/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMP2232BMAE/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 LMP2232BMAE/NOPB?
For technical support, including LMP2232BMAE/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMP2232BMAE/NOPB requirements.
6.How does Aetrix verify that LMP2232BMAE/NOPB is sourced from the original manufacturer or authorized distributors?
All LMP2232BMAE/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 LMP2232BMAE/NOPB meets industry standards.
7.What is the process for return or replacement of LMP2232BMAE/NOPB?
All LMP2232BMAE/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMP2232BMAE/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 LMP2232BMAE/NOPB part is unused and in its original packaging.
Return procedure for LMP2232BMAE/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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