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Texas Instruments LMV931Q1MFX/NOPB
- Part No.:
- LMV931Q1MFX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LMV931Q1MFX/NOPB.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,362
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Product details
Overview
LMV931Q1MFX/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, with 1.4 MHz gain-bandwidth product, 100 μA per-channel supply current, and input common-mode voltage extending 200 mV beyond rails. It delivers 30 mV output swing from rail into 2-kΩ load at 1.8 V, enabling precision signal conditioning in engine control units and battery management systems.
For engineers reviewing the LMV931Q1MFX/NOPB datasheet, LMV931Q1MFX/NOPB pinout, LMV931Q1MFX/NOPB application, or LMV931Q1MFX/NOPB equivalent, this page provides verified technical context, validated pin functions, confirmed automotive-grade performance parameters, and real-world implementation guidance for low-voltage sensor interface and current sense amplifier circuits.
Technical Context
The LMV931Q1MFX/NOPB employs a complementary PNP/NPN input stage enabling rail-to-rail input operation with CMVR from −0.2 V to V+ + 0.2 V (at 25°C), and a Class AB output stage delivering rail-to-rail output swing with <105 mV rail proximity into 600-Ω load at 1.8 V. Its 101 dB DC open-loop gain supports high-accuracy closed-loop configurations in low-frequency sensing.
Designed for single-supply automotive environments, it features 78 dB CMRR and 100 dB PSRR at 25°C under 1.8 V operation, with thermal performance characterized by RθJA = 285.9°C/W (SC-70) and guaranteed functionality across −40°C to +125°C ambient temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.8 V to 5.5 V - enables direct interface with Li-ion single-cell and two-cell battery systems without level-shifting. |
| Gain-Bandwidth Product | 1.4 MHz - supports stable unity-gain buffer and low-noise signal amplification up to ~100 kHz in sensor front-ends. |
| Input Offset Voltage (max) | 4 mV at 25°C - ensures ≤0.2% error in 12-bit ADC-driven current sensing at 1.8 V supply. |
| Output Swing (2-kΩ load) | 30 mV from rail at 1.8 V - preserves dynamic range in low-voltage analog chains for ultrasonic transducer biasing. |
| Supply Current per Channel | 103–205 μA - allows continuous operation in always-on vehicle subsystems with sub-100 μA quiescent budget. |
| Input Common-Mode Range | V− − 0.2 V to V+ + 0.2 V - permits accurate measurement of signals below ground or above supply in BMS cell monitoring. |
| ESD Rating (HBM) | ±2000 V - meets AEC-Q100 stress requirements for robustness in automotive assembly and field environments. |
Pinout & Package
LMV931Q1MFX/NOPB is packaged in a 5-pin SC-70 (DCK) package measuring 2.00 mm × 1.25 mm, optimized for space-constrained automotive PCBs. Pinout is validated per TI SNOSD49 datasheet Figure 5 (top view).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| +IN (Pin 1) | Noninverting Input | Accepts reference or sensor signal; supports common-mode voltages down to V− − 0.2 V for ground-referenced inputs. |
| V− (Pin 2) | Negative Supply | Typically connected to GND in single-supply systems; defines lower rail for rail-to-rail input/output operation. |
| −IN (Pin 3) | Inverting Input | Used for feedback network connection; enables precision inverting amplifier or transimpedance configurations. |
| OUT (Pin 4) | Amplifier Output | Drives loads ≥600 Ω with ≤105 mV headroom to V+; stable with up to 1000 pF capacitive load. |
| V+ (Pin 5) | Positive Supply | Accepts 1.8–5.5 V; supplies internal bias circuitry and sets upper rail for rail-to-rail output swing. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full utilization of 1.8 V supply range in single-supply sensor interfaces without external level shifters. |
| AEC-Q100 Grade 1 qualification | Validated for −40°C to +125°C ambient operation with HBM ±2 kV and CDM ±750 V ESD robustness. |
| Ultra-low quiescent current | 103 μA typical at 1.8 V allows integration into always-on vehicle modules without compromising battery life. |
| High DC open-loop gain | 101 dB (typ.) ensures <0.001% gain error in closed-loop configurations for precision current sensing. |
| Enhanced CMVR beyond rails | −0.2 V to V+ + 0.2 V input range supports direct measurement of overvoltage/undervoltage fault conditions. |
Applications
| Engine Control Unit (ECU) Sensor Interface | Body Control Module (BCM) Signal Conditioning |
|---|---|
Use Scenario: Amplifying low-level signals from knock sensors and oxygen sensors in engine bay environments. IC Role / Device Role / Timing Role: Precision non-inverting amplifier with rail-to-rail input capturing sub-100 mV transducer outputs referenced to chassis ground. Use Value: 4 mV max VOS and 78 dB CMRR ensure <0.5% measurement error despite high EMI and thermal cycling. |
Use Scenario: Buffering and scaling analog signals from door lock actuators and ambient light sensors. IC Role / Device Role / Timing Role: Unity-gain voltage follower isolating microcontroller ADC inputs from noisy load switching. Use Value: 100 μA supply current and 285.9°C/W thermal resistance enable reliable operation in sealed BCM enclosures. |
| Battery Management System (BMS) Cell Monitoring | Ultrasonic Ranging Front-End |
Use Scenario: Measuring individual Li-ion cell voltages in multi-cell packs with ground-referenced topology. IC Role / Device Role / Timing Role: High-impedance differential amplifier configured for ±200 mV beyond-rail common-mode input. Use Value: VCM = V− − 0.2 V capability eliminates need for external bias resistors in passive cell monitoring circuits. |
Use Scenario: Amplifying echo return signals from 40 kHz ultrasonic transducers in parking assist systems. IC Role / Device Role / Timing Role: Low-noise, low-distortion gain stage preceding comparator-based time-of-flight detection. Use Value: 60 nV/√Hz input voltage noise and 0.023% THD at 1 kHz preserve signal integrity for accurate distance calculation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP6001T-E/OT | Lower GBW (1 MHz), higher VOS (max 4.5 mV), no AEC-Q100 qualification | Rated for industrial (−40°C to +125°C) but not automotive-grade reliability testing | Select when AEC-Q100 compliance is not required and 1.4 MHz bandwidth is not critical. |
| TSV911ICT | Higher supply current (160 μA typ.), same GBW (1.4 MHz), AEC-Q100 Grade 1 qualified | Wider input offset drift (10 μV/°C vs. 5.5 μV/°C) and lower PSRR (85 dB vs. 100 dB) | Prefer when higher drive strength is needed; verify PSRR impact in noisy power domains. |
Compared with MCP6001T-E/OT and TSV911ICT, LMV931Q1MFX/NOPB uniquely combines AEC-Q100 Grade 1 qualification, 100 μA supply current, and −0.2 V to V+ + 0.2 V CMVR in a 2.0 mm × 1.25 mm SC-70 package-making it optimal for space- and reliability-constrained automotive sensor nodes.
Availability
LMV931Q1MFX/NOPB is available at Aetrix Electronics and suitable for engine control units, battery management systems, and ultrasonic ranging applications requiring stable component supply across automotive production lifecycles.
Supply support for LMV931Q1MFX/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-grade IC design and manufacturing.
The LMV93x-N-Q1 product line was developed specifically for low-voltage, low-power signal conditioning in automotive subsystems-including ECU, BCM, and BMS-where rail-to-rail operation and AEC-Q100 reliability are mandatory.
FAQ
What is the maximum operating temperature range for LMV931Q1MFX/NOPB?
The LMV931Q1MFX/NOPB is AEC-Q100 Grade 1 qualified, supporting continuous operation from −40°C to +125°C ambient temperature. This rating is verified per test conditions in TI's SNOSD49 datasheet Section 6.3 and applies to all electrical specifications unless otherwise noted for temperature derating.
Does LMV931Q1MFX/NOPB support true rail-to-rail input with signals below ground?
Yes. The LMV931Q1MFX/NOPB specifies an input common-mode voltage range of V− − 0.2 V to V+ + 0.2 V at 25°C, enabling valid operation with inputs 200 mV below the negative supply rail-critical for ground-referenced sensor interfaces in automotive BMS and ECU designs.
What package type is used for LMV931Q1MFX/NOPB and what are its dimensions?
LMV931Q1MFX/NOPB uses the SC-70 (DCK) package, with nominal body size 2.00 mm × 1.25 mm and 0.65 mm pitch. This ultra-small outline is documented in TI's SNOSD49 datasheet Table "Device Information" and is distinct from the SOT-23 variant of the same family.
Can LMV931Q1MFX/NOPB drive a 600-Ω load while maintaining rail-to-rail output swing?
At 1.8 V supply, LMV931Q1MFX/NOPB delivers output swing within 105 mV of each rail into a 600-Ω load (per SNOSD49 Section 6.5). This is confirmed by measured VO values of 0.077–0.120 V (low side) and 1.63–1.72 V (high side), ensuring >90% usable dynamic range in low-voltage systems.
Is LMV931Q1MFX/NOPB pin-compatible with other members of the LMV93x-N-Q1 family?
No. LMV931Q1MFX/NOPB is a single-channel device in 5-pin SC-70, whereas LMV932-N-Q1 (dual) uses 8-pin SOIC and LMV934-N-Q1 (quad) uses 14-pin TSSOP. Pin count, spacing, and function mapping differ; PCB layout must be specific to LMV931Q1MFX/NOPB's 5-pin DCK footprint.
LMV931Q1MFX/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- 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:
- SOT-23-5
LMV931Q1MFX/NOPB FAQ
1.How can I place an order for LMV931Q1MFX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMV931Q1MFX/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 LMV931Q1MFX/NOPB reliable?
The price and inventory of LMV931Q1MFX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV931Q1MFX/NOPB is usually 5 days.
3.What payment methods are accepted for LMV931Q1MFX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV931Q1MFX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMV931Q1MFX/NOPB?
LMV931Q1MFX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMV931Q1MFX/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 LMV931Q1MFX/NOPB?
For technical support, including LMV931Q1MFX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV931Q1MFX/NOPB requirements.
6.How does Aetrix verify that LMV931Q1MFX/NOPB is sourced from the original manufacturer or authorized distributors?
All LMV931Q1MFX/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 LMV931Q1MFX/NOPB meets industry standards.
7.What is the process for return or replacement of LMV931Q1MFX/NOPB?
All LMV931Q1MFX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMV931Q1MFX/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 LMV931Q1MFX/NOPB part is unused and in its original packaging.
Return procedure for LMV931Q1MFX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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