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Texas Instruments LMV931MG/NOPB
- Part No.:
- LMV931MG/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
LMV931MG/NOPB.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:13,762
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Product details
Overview
LMV931MG/NOPB from Texas Instruments is a single-channel, rail-to-rail input/output (RRIO) operational amplifier optimized for 1.8-V operation. It delivers 1.4-MHz gain bandwidth, 100-μA supply current per channel, and output swing within 30 mV of rails under 2-kΩ load - enabling precision signal conditioning in ultra-low-power, battery-constrained systems such as wearable health monitors and portable sensor interfaces.
For engineers reviewing the LMV931MG/NOPB datasheet, LMV931MG/NOPB pinout, LMV931MG/NOPB application, or LMV931MG/NOPB equivalent, key selection criteria include its −40°C to +125°C operating range, 200-mV beyond-rail input common-mode capability, low 4-mV max input offset voltage, and compatibility with space-constrained PCB layouts using SC70-5 or SOT-23-5 packages.
Technical Context
The LMV931MG/NOPB employs a CMOS input stage enabling rail-to-rail input common-mode range extending 200 mV beyond V− and V+, and an output stage capable of sourcing/sinking ≥4 mA while maintaining <105-mV rail proximity at 1.8 V with 600-Ω load. Its 101-dB DC open-loop gain supports high-accuracy closed-loop configurations in low-frequency sensing applications.
Designed for single-supply operation down to 1.8 V, the device maintains stable unity-gain performance driving up to 1000-pF capacitive loads with minimal ringing - critical for interfacing with ADC drivers, battery voltage monitors, and analog front-ends where layout parasitics and supply headroom are tightly constrained.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.8 V to 5.5 V - enables direct use with single-cell Li-ion (3.0–4.2 V), two-cell alkaline (2.4–3.2 V), or 1.8-V logic domains without level-shifting. |
| Gain Bandwidth Product | 1.4 MHz at 1.8 V - supports stable amplification of signals up to ~100 kHz in unity-gain buffer or low-gain sensor signal chains. |
| Input Offset Voltage (max) | 4 mV at 25°C - ensures ≤0.2% error in 2-V full-scale battery monitoring or medical electrode amplification without trimming. |
| Supply Current (per channel) | 103 μA typical at 1.8 V - allows >1-year operation on a 100-mAh coin cell when active 1% of time in wearable sleep-tracking mode. |
| Output Swing (2-kΩ load) | Within 30 mV of each rail at 1.8 V - preserves dynamic range for 12-bit ADCs requiring ≥1.74-V peak output swing. |
| Input Common-Mode Range | V− − 0.2 V to V+ + 0.2 V - permits direct sensing of signals below ground or above supply, e.g., shunt-based current measurement in high-side configurations. |
| Operating Temperature | −40°C to +125°C - qualified for automotive cabin modules, industrial IoT edge nodes, and medical devices requiring extended thermal robustness. |
Pinout & Package
LMV931MG/NOPB is packaged in a 5-pin SC70 (2.00 mm × 1.25 mm) - a space-optimized, surface-mount package suitable for high-density portable PCBs. Pinout conforms to industry-standard op-amp configuration with noninverting/inverting inputs, output, and dual supply terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| +IN (Pin 1) | Noninverting Input | High-impedance CMOS node accepting signals from sensors or DACs; supports common-mode voltages 200 mV beyond rails. |
| V− (Pin 2) | Negative Supply | Ground reference or negative rail connection; must be decoupled locally to suppress noise coupling into input stage. |
| −IN (Pin 3) | Inverting Input | Feedback node for closed-loop configurations; matched bias current minimizes offset in transimpedance designs. |
| OUT (Pin 4) | Amplifier Output | Class-AB output stage capable of driving 600-Ω loads to within 105 mV of rails at 1.8 V; stable with ≥1000-pF capacitive loads. |
| V+ (Pin 5) | Positive Supply | Main power terminal; requires 0.1-μF ceramic bypass capacitor placed ≤2 mm from pin to maintain PSRR >75 dB across 10 Hz–100 kHz. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail I/O | Enables full utilization of 1.8-V supply in single-ended sensor interfaces - no lost headroom at input or output. |
| Ultra-low quiescent current | 103 μA typical at 1.8 V reduces system standby power by >5× versus standard 5-V op-amps, extending battery life in always-on wearables. |
| Enhanced input common-mode range | V− − 0.2 V to V+ + 0.2 V allows direct connection to transducers biased outside supply rails, eliminating level-shifters in biopotential amplifiers. |
| Stable capacitive load drive | Guaranteed stability with up to 1000-pF load prevents oscillation when driving long traces or ADC input capacitance without external isolation resistors. |
| High DC open-loop gain | 101 dB at 1.8 V ensures <0.001% gain error in precision instrumentation amplifiers using moderate feedback ratios (e.g., G = 100). |
Applications
| Battery Voltage Monitoring | Wearable Biopotential Sensing |
|---|---|
Use Scenario: Real-time tracking of single-cell Li-ion battery voltage during charge/discharge cycles in Bluetooth earbuds or smartwatches. IC Role / Device Role / Timing Role: Precision unity-gain buffer isolating battery node from ADC input, rejecting supply ripple via 100-dB PSRR. Use Value: Maintains ±10-mV accuracy over temperature with 4-mV max VOS, enabling reliable end-of-discharge detection at 3.0 V threshold. | Use Scenario: Amplifying microvolt-level ECG/EMG signals from dry electrodes in fitness bands with minimal power overhead. IC Role / Device Role / Timing Role: First-stage AC-coupled amplifier with rail-to-rail input accepting ±200-mV electrode offsets without clipping. Use Value: 200-mV beyond-rail input range eliminates need for external biasing circuitry, reducing BOM count and board area by 30%. |
| Portable Gas Sensor Interface | Low-Power Industrial Transmitter |
Use Scenario: Conditioning output of electrochemical CO or NO₂ sensors with 100-μA excitation current and mV-level response. IC Role / Device Role / Timing Role: Transimpedance amplifier converting sensor current to voltage, powered directly from 1.8-V regulator shared with MCU. Use Value: 100-μA supply current allows concurrent operation of sensor, op-amp, and BLE radio on same 100-mAh battery for >6 months. | Use Scenario: Signal conditioning for 4–20-mA loop-powered field transmitters in hazardous-area wireless sensors. IC Role / Device Role / Timing Role: Low-drift buffer isolating RTD or thermocouple signal from loop driver IC, operating from 3.3-V auxiliary rail. Use Value: 5.5-μV/°C TCVOS limits temperature-induced offset drift to <0.5 mV over −40°C to +85°C ambient range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV9001IDBVR | Higher 1-MHz GBW, 50-μA lower supply current, but only 125°C max junction temp vs 150°C for LMV931MG/NOPB. | Preferred for sub-100-μA ultra-low-power designs where 1-MHz bandwidth suffices; less suitable for high-temp industrial nodes. | Select TLV9001IDBVR when minimizing active current dominates over extended temperature qualification. |
| MCP6001UT-E/OT | Same 1.8-V min supply, but 100-μA supply current and 1-MHz GBW; lacks 200-mV beyond-rail input range (CMVR = V− to V+ only). | Suitable for cost-sensitive consumer electronics where rail-limited input range is acceptable; not recommended for high-side current sense. | Choose MCP6001UT-E/OT for price-driven volume production where input common-mode margin is not required. |
Compared with TLV9001IDBVR and MCP6001UT-E/OT, LMV931MG/NOPB uniquely combines 200-mV beyond-rail input capability, 1.4-MHz bandwidth at 1.8 V, and 125°C ambient rating - making it the only option among the three qualified for high-precision, high-temperature, single-supply sensor front-ends in medical and industrial edge devices.
Availability
LMV931MG/NOPB is available at Aetrix Electronics and suitable for battery monitoring, wearable biopotential sensing, portable gas sensor interfaces, and low-power industrial transmitters requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for LMV931MG/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 amplifiers and low-power signal chain solutions.
The LMV93x-N family was designed specifically for energy-constrained, space-limited portable electronics - delivering rail-to-rail performance at 1.8 V while maintaining robustness across −40°C to +125°C for medical, industrial, and consumer wearables.
FAQ
What is the maximum operating temperature for LMV931MG/NOPB?
The LMV931MG/NOPB is rated for continuous operation from −40°C to +125°C ambient temperature. This specification is validated per TI's recommended operating conditions and supported by thermal metrics including RθJA = 285.9°C/W for the SC70-5 package, ensuring reliable performance in automotive cabin modules and industrial edge nodes without derating below 125°C.
Does LMV931MG/NOPB support true rail-to-rail input and output?
Yes, LMV931MG/NOPB provides rail-to-rail input common-mode range extending 200 mV beyond both supply rails (V− − 0.2 V to V+ + 0.2 V) and rail-to-rail output swing - achieving 30 mV from each rail with 2-kΩ load at 1.8 V. This enables direct interfacing with sensors operating outside the supply domain and maximizes ADC dynamic range in single-supply systems.
Can LMV931MG/NOPB drive a 1000-pF capacitive load stably?
Yes, LMV931MG/NOPB is characterized for stable operation driving up to 1000-pF capacitive loads with minimal ringing - a key feature confirmed in TI's datasheet Figure 21–26 small/large-signal response plots. This eliminates need for series isolation resistors when interfacing with SAR ADCs or long PCB traces, simplifying layout and preserving signal integrity.
What is the typical supply current of LMV931MG/NOPB at 1.8 V?
The typical supply current of LMV931MG/NOPB is 103 μA per channel at 1.8 V and 25°C, with a maximum of 205 μA across −40°C to +125°C. This ultra-low quiescent current enables multi-year battery life in intermittently active devices like wireless health patches, where average current consumption must remain below 1 μA in deep-sleep modes.
Which package variants are available for LMV931MG/NOPB?
LMV931MG/NOPB is offered exclusively in the 5-pin SC70 package (2.00 mm × 1.25 mm body size), as indicated by the "MG" suffix per TI's packaging nomenclature. The alternate SOT-23-5 variant carries the "DBV" suffix (e.g., LMV931DBVR); MG denotes SC70-5, ensuring correct footprint selection for high-density portable PCBs.
LMV931MG/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.42V/µs
- Gain Bandwidth Product:
- 1.5 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 14 nA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 116µA
- Current - Output / Channel:
- 100 mA
- Voltage - Supply Span (Min):
- 1.8 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-5
LMV931MG/NOPB FAQ
1.How can I place an order for LMV931MG/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMV931MG/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 LMV931MG/NOPB reliable?
The price and inventory of LMV931MG/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV931MG/NOPB is usually 5 days.
3.What payment methods are accepted for LMV931MG/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV931MG/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMV931MG/NOPB?
LMV931MG/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMV931MG/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 LMV931MG/NOPB?
For technical support, including LMV931MG/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV931MG/NOPB requirements.
6.How does Aetrix verify that LMV931MG/NOPB is sourced from the original manufacturer or authorized distributors?
All LMV931MG/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 LMV931MG/NOPB meets industry standards.
7.What is the process for return or replacement of LMV931MG/NOPB?
All LMV931MG/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMV931MG/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 LMV931MG/NOPB part is unused and in its original packaging.
Return procedure for LMV931MG/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LMV931MG/NOPB Tags
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