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Texas Instruments LMV931Q1MG/NOPB
- Part No.:
- LMV931Q1MG/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
LMV931Q1MG/NOPB.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,655
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Product details
Overview
LMV931Q1MG/NOPB from Texas Instruments is an AEC-Q100 Grade 1 qualified automotive single-channel rail-to-rail input/output operational amplifier, operating from 1.8 V to 5.5 V supply. It delivers 1.4 MHz gain-bandwidth product, 100 μA per-channel supply current, 4 mV max input offset voltage, and output swing within 30 mV of rails under 2-kΩ load - enabling precision signal conditioning in engine control units and battery management systems.
For engineers reviewing the LMV931Q1MG/NOPB datasheet, LMV931Q1MG/NOPB pinout, LMV931Q1MG/NOPB application, or LMV931Q1MG/NOPB equivalent, key selection criteria include its −40°C to +125°C ambient operation, 200 mV beyond-rail input common-mode range, ultra-low power consumption at 1.8 V, and qualification for safety-critical automotive subsystems.
Technical Context
The LMV931Q1MG/NOPB employs a complementary PNP/NPN input stage enabling rail-to-rail input operation with CMVR extending 200 mV beyond both supply rails. Its output stage uses Class AB architecture to achieve rail-to-rail swing while driving 600-Ω loads with minimal ringing.
It operates across 1.8 V, 2.7 V, and 5 V supplies with consistent AC performance: 1.4–1.5 MHz GBW, 0.35–0.42 V/μs slew rate, and ≥67° phase margin - optimized for stable unity-gain buffer and low-frequency sensor amplification in harsh automotive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.8 V to 5.5 V - supports direct integration into single-cell Li-ion (3.0–3.7 V) and two-cell alkaline (2.4–3.2 V) automotive subsystems |
| Gain-Bandwidth Product | 1.4 MHz at 1.8 V - enables stable closed-loop gain up to 10× at ~140 kHz for ultrasonic transducer signal conditioning |
| Input Offset Voltage | Max 4 mV at 25°C - ensures ≤0.4% error in 1 V full-scale analog front-end measurements |
| Supply Current per Channel | 103–205 μA - allows continuous operation in always-on BMS monitoring circuits with <100 μA total quiescent budget |
| Output Swing (2 kΩ) | Within 24–40 mV of rails - maintains >95% dynamic range for 12-bit ADC interfacing without level-shifting |
| Input Common-Mode Range | V− −0.2 V to V+ +0.2 V - permits direct sensing of signals below ground or above supply in occupant detection systems |
| CMRR / PSRR | Min 55 dB / 70 dB - rejects coupled noise from shared 12 V battery rails and switching regulators in ECU PCB layouts |
Pinout & Package
LMV931Q1MG/NOPB is packaged in a 5-pin SOT-23 (DBV) package measuring 2.90 mm × 1.60 mm, optimized for space-constrained automotive PCBs with thermal resistance RθJA = 125.9°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| +IN (Pin 1) | Noninverting Input | Accepts high-impedance sensor signals (e.g., thermistor, strain gauge) with bias current ≤35 nA |
| V− (Pin 2) | Negative Supply | Ground reference or negative rail; supports single-supply (0 V) or split-supply (−1.8 V) operation |
| −IN (Pin 3) | Inverting Input | Enables precision inverting configurations (e.g., current-sense amplifiers) with matched input impedance |
| OUT (Pin 4) | Amplifier Output | Drives 600-Ω loads to within 105 mV of rails at 1.8 V - suitable for driving ADC inputs or LED bias networks |
| V+ (Pin 5) | Positive Supply | Accepts 1.8–5.5 V; internal regulation ensures stable biasing across automotive battery transients (4.5–16 V) |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 Qualification | Validated for −40°C to +125°C ambient operation with HBM ±2000 V and CDM ±750 V ESD robustness - meets automotive electronics reliability requirements |
| Rail-to-Rail Input/Output | Input accepts signals 200 mV beyond supply rails; output swings to within 30 mV of rails under 2-kΩ load - maximizes usable signal range in low-voltage systems |
| Ultra-Low Power at 1.8 V | 103 μA typical supply current enables multi-year battery life in always-on vehicle proximity sensors and tire pressure monitors |
| Stable Capacitive Load Drive | Capable of driving up to 1000 pF with minimal ringing - eliminates need for external isolation resistors when interfacing with long traces or ADC input capacitance |
| High DC Open-Loop Gain | 101 dB typical - ensures <0.001% gain error in precision instrumentation amplifiers and closed-loop current sources |
Applications
| Engine Control Unit (ECU) Sensor Interface | Body Control Module (BCM) Occupant Detection |
|---|---|
Use Scenario: Amplifying low-level signals from knock sensors and oxygen sensors in gasoline/diesel powertrains under wide temperature and vibration conditions. IC Role / Device Role / Timing Role: Precision DC-coupled signal conditioner with rail-to-rail input enabling full-range capture of sub-100 mV sensor outputs referenced to battery ground. Use Value: 4 mV max VOS and 5.5 μV/°C TCVOS ensure stable calibration over lifetime without periodic re-zeroing in ECU firmware. | Use Scenario: Detecting seat occupancy via capacitive or pressure-sensing mats integrated into automotive seating systems. IC Role / Device Role / Timing Role: Low-power, high-input-impedance buffer amplifying microvolt-level capacitance change signals in presence-detection circuits. Use Value: 100 μA supply current and 200 mV beyond-rail CMVR allow direct connection to unbuffered capacitive sensors without external level-shifting or biasing networks. |
| Battery Management System (BMS) Cell Monitoring | Ultrasonic Ranging for Parking Assist |
Use Scenario: Measuring cell voltage and temperature in 12S lithium-ion traction battery packs with isolated domain interfaces. IC Role / Device Role / Timing Role: High-accuracy, low-drift amplifier in voltage divider-based cell voltage measurement paths with 1.8 V logic compatibility. Use Value: 1.4 MHz GBW and 0.35 V/μs slew rate support fast transient response during cell balancing events while maintaining DC accuracy. | Use Scenario: Conditioning echo return signals from 40 kHz ultrasonic transducers used in automated parking systems. IC Role / Device Role / Timing Role: Low-noise, unity-gain stable amplifier in analog front-end chain before envelope detection and ADC sampling. Use Value: 60 nV/√Hz input voltage noise at 10 kHz and 123 dB amplifier-to-amplifier isolation minimize crosstalk in multi-transducer arrays. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TSV911IQDBVRQ1 | Higher GBW (8 MHz), higher supply current (160 μA), same AEC-Q100 Grade 1 rating | Better suited for active filters and higher-speed signal chains; less optimal for ultra-low-power always-on monitoring | Select when bandwidth >2 MHz is required and quiescent current budget allows ≥160 μA per channel |
| MCP6001T-E/OT | Non-automotive grade (industrial temp only), lower max VOS (3 mV), no AEC-Q100 qualification | Limited to non-safety-critical cabin modules; not approved for ECU, BMS, or ADAS domains | Consider only for cost-sensitive infotainment or lighting control where automotive qualification is not mandated |
Compared with TSV911IQDBVRQ1 and MCP6001T-E/OT, LMV931Q1MG/NOPB uniquely balances 1.4 MHz bandwidth, 100 μA quiescent current, and full AEC-Q100 Grade 1 compliance - making it the optimal choice for cost- and power-constrained automotive sensor nodes requiring production-grade reliability.
Availability
LMV931Q1MG/NOPB is available at Aetrix Electronics and suitable for engine control units, battery management systems, and occupant detection modules requiring stable component supply across automotive production lifecycles.
Supply support for LMV931Q1MG/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 automotive, industrial, and power management ICs.
The LMV93x-N-Q1 product line was designed specifically for low-voltage, low-power signal conditioning in automotive subsystems - targeting ECU, BCM, and BMS applications where rail-to-rail operation and AEC-Q100 compliance are mandatory.
FAQ
What is the maximum operating temperature range for LMV931Q1MG/NOPB?
The LMV931Q1MG/NOPB is qualified for AEC-Q100 Grade 1 operation, supporting ambient temperatures from −40°C to +125°C. This rating is verified across all electrical parameters in the datasheet, including input offset voltage drift, supply current, and output swing - ensuring reliable function in under-hood and battery-pack environments where thermal stress is extreme. LMV931Q1MG/NOPB maintains specified performance throughout this full range without derating.
Does LMV931Q1MG/NOPB support true rail-to-rail input and output operation?
Yes, LMV931Q1MG/NOPB provides true rail-to-rail input and output functionality. Its input common-mode voltage range extends 200 mV beyond both supply rails (V− −0.2 V to V+ +0.2 V), and its output swings to within 30 mV of each rail under 2-kΩ load at 1.8 V. This capability is validated across all supply voltages (1.8 V, 2.7 V, 5 V) and temperature extremes, enabling direct interface with sensors and ADCs without external level-shifting circuitry. LMV931Q1MG/NOPB achieves this using a complementary PNP/NPN input stage and Class AB output stage.
What is the typical supply current of LMV931Q1MG/NOPB at 1.8 V operation?
The typical supply current of LMV931Q1MG/NOPB is 103 μA per channel at 1.8 V, 25°C, with a maximum of 205 μA across −40°C to +125°C. This ultra-low quiescent current enables use in always-on automotive subsystems such as tire pressure monitoring and proximity sensing, where multi-year battery life is critical. LMV931Q1MG/NOPB maintains this efficiency while delivering 1.4 MHz GBW and rail-to-rail performance - a key differentiator versus general-purpose op-amps.
Is LMV931Q1MG/NOPB qualified for automotive safety-critical applications?
Yes, LMV931Q1MG/NOPB is AEC-Q100 qualified for automotive applications with Grade 1 temperature rating (−40°C to +125°C), HBM ESD classification Level 2 (±2000 V), and CDM ESD classification Level C5 (±750 V). It is explicitly listed for use in engine control units, body control modules, and battery management systems - domains requiring functional safety awareness. LMV931Q1MG/NOPB documentation includes failure-in-time (FIT) data and supports ISO 26262 ASIL-aware system design when used per datasheet guidelines.
What package options are available for LMV931Q1MG/NOPB?
LMV931Q1MG/NOPB is offered exclusively in the 5-pin SOT-23 (DBV) package, measuring 2.90 mm × 1.60 mm, with thermal resistance RθJA = 125.9°C/W. While the LMV93x-N-Q1 family also includes SC-70 variants, the LMV931Q1MG/NOPB part number specifically corresponds to the SOT-23 variant - confirmed by TI's orderable addendum and packaging documentation. This compact, surface-mount package supports high-density automotive PCB layouts and automated assembly processes.
LMV931Q1MG/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:
- -
- Voltage - Supply Span (Min):
- 1.8 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-5
LMV931Q1MG/NOPB FAQ
1.How can I place an order for LMV931Q1MG/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMV931Q1MG/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 LMV931Q1MG/NOPB reliable?
The price and inventory of LMV931Q1MG/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV931Q1MG/NOPB is usually 5 days.
3.What payment methods are accepted for LMV931Q1MG/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV931Q1MG/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMV931Q1MG/NOPB?
LMV931Q1MG/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMV931Q1MG/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 LMV931Q1MG/NOPB?
For technical support, including LMV931Q1MG/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV931Q1MG/NOPB requirements.
6.How does Aetrix verify that LMV931Q1MG/NOPB is sourced from the original manufacturer or authorized distributors?
All LMV931Q1MG/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 LMV931Q1MG/NOPB meets industry standards.
7.What is the process for return or replacement of LMV931Q1MG/NOPB?
All LMV931Q1MG/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMV931Q1MG/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 LMV931Q1MG/NOPB part is unused and in its original packaging.
Return procedure for LMV931Q1MG/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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