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Texas Instruments LMP2232BMMX/NOPB
- Part No.:
- LMP2232BMMX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LMP2232BMMX/NOPB.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,895
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Product details
Overview
LMP2232BMMX/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 LMP2232BMMX/NOPB datasheet, LMP2232BMMX/NOPB pinout, LMP2232BMMX/NOPB application, or LMP2232BMMX/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, and operation across –40°C to 125°C.
Technical Context
The LMP2232BMMX/NOPB implements a CMOS-input, rail-to-rail output architecture optimized for single-supply precision signal conditioning. Its input stage delivers 20 fA bias current and 97 dB CMRR, while the output swings within 15 mV of both rails under 10 kΩ load-enabling full dynamic range utilization in low-voltage systems.
It operates stably with capacitive loads up to 100 pF (68° phase margin) and maintains 120 dB open-loop gain and 120 dB PSRR across its 1.6V–5.5V supply range. The B-grade variant specifies ±0.5 µV/°C max offset drift and ±150 µV max VOS, validated over –40°C to 125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.6V to 5.5V - supports direct integration into coin-cell (1.8V), Li-ion (3.3V), and multi-rail systems without level-shifting. |
| Quiescent Current per Channel | 16 µA at 1.8V - enables >1-year battery life in continuous-sensing wearable devices using CR2032 cells. |
| Input Offset Voltage (max) | ±150 µV - ensures ≤0.003% gain error in 100× instrumentation amplifier configurations at room temperature. |
| Offset Voltage Drift (max) | ±0.5 µV/°C - limits total offset drift to <6 µV over 0°C–70°C industrial range, critical for uncalibrated long-term measurements. |
| Gain-Bandwidth Product | 130 kHz - supports stable DC-coupled amplification of sub-10 kHz sensor signals (e.g., thermocouples, strain gauges) with unity-gain stability. |
| Input Bias Current (typ) | 20 fA - prevents >100 MΩ source impedance from inducing >2 µV error, essential for pH electrodes and piezoelectric sensors. |
| Common-Mode Input Range | Extends 200 mV below negative rail - allows true ground-sensing in single-supply configurations without input level-shifting circuitry. |
Pinout & Package
Package: 8-pin VSSOP (DGK0008A), 3.0 mm × 3.0 mm body, 0.65 mm pitch, exposed pad optional. Pin-compatible with SOIC-8 but with 45% smaller footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (Channel A) | High-impedance CMOS node accepting differential sensor signals; requires guarded trace routing to minimize leakage. |
| 2 | Non-Inverting Input (Channel A) | Accepts reference or sensor signal; common-mode range extends 200 mV below V− for ground-referenced inputs. |
| 3 | Output (Channel A) | Rail-to-rail output swinging within 15 mV of V+ or V− at 10 kΩ load-maximizes ADC input range in 1.8V–3.3V systems. |
| 4 | V− (Ground) | Power return for both channels; must be low-impedance connection to minimize PSRR degradation and ground loop errors. |
| 5 | Non-Inverting Input (Channel B) | Independent high-Z input for second sensor channel; shares same V− and V+ rails as Channel A. |
| 6 | Inverting Input (Channel B) | Matched to Pin 1 in offset and bias specs-enables dual-channel synchronous acquisition without inter-channel crosstalk. |
| 7 | Output (Channel B) | Identical rail-to-rail performance to Pin 3; supports dual-sensor readout or active filtering stages. |
| 8 | V+ | Positive supply rail; PSRR of 120 dB suppresses noise from switching regulators feeding this pin directly. |
Key Features
| Feature | Design Value |
|---|---|
| Micropower operation | 16 µA/channel at 1.8V enables >5-year shelf life in implantable medical sensors with primary lithium batteries. |
| Ultra-low input bias current | 20 fA typical eliminates leakage-induced offset in >1 GΩ sensor interfaces like glass pH electrodes and photodiode transimpedance stages. |
| Rail-to-rail output | Swings to within 15 mV of V+ and V− at 10 kΩ load-preserves full 12-bit+ resolution when driving SAR ADCs directly from 1.8V supplies. |
| Precision DC performance | ±150 µV VOS and ±0.5 µV/°C TCVOS reduce calibration frequency in portable gas analyzers and handheld multimeters. |
| Wide temperature range | Specified from –40°C to +125°C supports under-hood automotive sensor modules and industrial process controllers without derating. |
Applications
| Precision Instrumentation Amplifiers | Battery-Powered Medical Instrumentation |
|---|---|
Use Scenario: High-gain, low-noise amplification of microvolt-level biopotential signals (ECG, EEG) in portable monitors. IC Role / Device Role / Timing Role: Primary gain stage in 3-op-amp IA topology, providing 100 dB CMRR and <1 µVpp integrated noise (0.1–10 Hz). Use Value: Enables clinical-grade signal fidelity without external chopper stabilization, reducing BOM count and power by 30% vs. discrete solutions. |
Use Scenario: Continuous glucose monitoring (CGM) patch with electrochemical sensor and Bluetooth LE radio. IC Role / Device Role / Timing Role: Transimpedance amplifier converting pA-level sensor current to voltage, followed by rail-to-rail buffering for 12-bit ADC. Use Value: 20 fA bias current prevents baseline drift during 7-day wear; 16 µA quiescent current extends battery life beyond 10 days on a 30 mAh cell. |
| High Impedance Sensors | Strain Gauge Bridge Amplifier |
Use Scenario: Interface to ceramic humidity sensors and MEMS microphones requiring >10 GΩ input impedance. IC Role / Device Role / Timing Role: First-stage buffer isolating high-Z capacitive sensor from downstream RC filters and ADC sampling switches. Use Value: 20 fA input bias avoids >100 mV DC error at 10 GΩ source impedance-critical for %RH accuracy better than ±2%. |
Use Scenario: Quarter-bridge strain gauge measurement in structural health monitoring nodes powered by energy harvesting. IC Role / Device Role / Timing Role: Differential amplifier with 1000× gain for Wheatstone bridge outputs, rejecting common-mode thermal EMF. Use Value: 97 dB CMRR and ±0.5 µV/°C drift ensure <0.1% FS error over –20°C to +60°C ambient without recalibration. |
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 | Zero-drift auto-zero architecture; 0.02 µV/°C max drift vs. LMP2232BMMX/NOPB's ±0.5 µV/°C; higher 350 kHz GBW but 17 µA IQ. | Better for <1 µV total drift over temperature; less suitable for >100 kHz signal bandwidth due to chopping artifacts. | Select OPA2333AIDR when absolute DC stability dominates; choose LMP2232BMMX/NOPB for lower noise floor (60 nV/√Hz vs. 80 nV/√Hz) and no switching ripple. |
| MAX44260ASA+ | 1.8V min supply; 12 µA IQ; 100 kHz GBW; ±2 µV/°C max TCVOS-looser drift spec than LMP2232BMMX/NOPB's ±0.5 µV/°C. | Optimized for ultra-low-voltage coin-cell use; insufficient for high-accuracy industrial calibration where <1 µV/°C drift is required. | Choose MAX44260ASA+ only for cost-sensitive, sub-2V designs where ±2 µV/°C drift is acceptable; LMP2232BMMX/NOPB remains preferred for metrology-grade accuracy. |
Compared with OPA2333AIDR and MAX44260ASA+, the LMP2232BMMX/NOPB delivers the optimal balance of micropower efficiency (16 µA), precision drift control (±0.5 µV/°C), and low-noise analog front-end performance-making it the default choice for battery-powered instrumentation where calibration interval and signal integrity are co-constrained.
Availability
LMP2232BMMX/NOPB is available at Aetrix Electronics and suitable for precision instrumentation amplifiers, battery-powered medical instrumentation, high-impedance sensors, and strain gauge bridge amplifiers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LMP2232BMMX/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 company specializing in analog and embedded processing technologies, with leadership in precision analog ICs, power management, and signal chain solutions.
The LMP2232BMMX/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 temperature for the LMP2232BMMX/NOPB?
The LMP2232BMMX/NOPB is fully specified from –40°C to +125°C ambient temperature. Its electrical characteristics-including ±150 µV max VOS and ±0.5 µV/°C max TCVOS-are guaranteed across this full range, making it suitable for under-hood automotive and industrial control applications where thermal robustness is critical. The device's junction temperature limit is 150°C.
Does the LMP2232BMMX/NOPB support rail-to-rail input operation?
No-the LMP2232BMMX/NOPB features rail-to-rail *output* swing (within 15 mV of V+ or V−), but its common-mode input voltage range extends only 200 mV below the negative rail and up to V+ − 1.2 V. This allows ground-sensing in single-supply configurations but does not support full rail-to-rail input common-mode range.
What is the minimum supply voltage for reliable operation of the LMP2232BMMX/NOPB?
The LMP2232BMMX/NOPB operates reliably down to 1.6V supply voltage. At 1.8V, it delivers 16 µA quiescent current per channel and maintains all key specifications including 130 kHz GBW and 60 nV/√Hz input voltage noise-enabling direct use with single alkaline or lithium coin cells without regulation.
How does the LMP2232BMMX/NOPB handle capacitive loads?
The LMP2232BMMX/NOPB is stable with capacitive loads up to 100 pF, achieving 68° phase margin at CL = 100 pF and RL = 10 kΩ. For loads >100 pF, external isolation resistance (e.g., 10 Ω–100 Ω in series with the output) is recommended to maintain stability without degrading bandwidth or settling time.
Is the LMP2232BMMX/NOPB pin-compatible with other variants in the LMP223x family?
Yes-the LMP2232BMMX/NOPB in 8-pin VSSOP is pin-compatible with the LMP2231 (single, 5-pin SOT-23) and LMP2234 (quad, 14-pin TSSOP) only in functional channel mapping, but not mechanically. Within the dual-channel variants, LMP2232AMMX/NOPB (A-grade) and LMP2232BMMX/NOPB (B-grade) share identical pinout, package, and DC/AC specs except for tighter VOS and TCVOS limits in the A-grade version.
LMP2232BMMX/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:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- Output Type:
- Differential, Rail-to-Rail
- Slew Rate:
- 0.058V/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
LMP2232BMMX/NOPB FAQ
1.How can I place an order for LMP2232BMMX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMP2232BMMX/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 LMP2232BMMX/NOPB reliable?
The price and inventory of LMP2232BMMX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMP2232BMMX/NOPB is usually 5 days.
3.What payment methods are accepted for LMP2232BMMX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMP2232BMMX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMP2232BMMX/NOPB?
LMP2232BMMX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMP2232BMMX/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 LMP2232BMMX/NOPB?
For technical support, including LMP2232BMMX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMP2232BMMX/NOPB requirements.
6.How does Aetrix verify that LMP2232BMMX/NOPB is sourced from the original manufacturer or authorized distributors?
All LMP2232BMMX/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 LMP2232BMMX/NOPB meets industry standards.
7.What is the process for return or replacement of LMP2232BMMX/NOPB?
All LMP2232BMMX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMP2232BMMX/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 LMP2232BMMX/NOPB part is unused and in its original packaging.
Return procedure for LMP2232BMMX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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