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Texas Instruments LMV931QDBVRQ1
- Part No.:
- LMV931QDBVRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LMV931QDBVRQ1.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,535
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Product details
Overview
LMV931QDBVRQ1 from Texas Instruments is an AEC-Q100 qualified automotive-grade single rail-to-rail input/output operational amplifier in SOT-23-5 package, delivering 1.4 MHz gain bandwidth, 100 µA per channel supply current, and 80 mV output swing from rails under 600 Ω load at 1.8 V. It enables precision signal conditioning in battery-powered automotive sensor interfaces and low-voltage power monitoring circuits.
For engineers reviewing the LMV931QDBVRQ1 datasheet, LMV931QDBVRQ1 pinout, LMV931QDBVRQ1 application, or LMV931QDBVRQ1 equivalent, key selection criteria include its –40°C to 125°C operating range, 200 mV beyond-rail common-mode input voltage, 4 mV max input offset voltage, and qualification for automotive safety-critical subsystems requiring stable DC accuracy and low quiescent power.
Technical Context
The LMV931QDBVRQ1 employs a Class AB output stage with rail-to-rail input differential pair, enabling full-swing operation from 1.8 V to 5 V single-supply configurations. Its input common-mode range extends 200 mV beyond both supply rails, supporting direct sensing of signals near ground or VCC in automotive battery monitoring.
It achieves 1.4 MHz unity-gain bandwidth with 0.35 V/µs slew rate at 1.8 V, maintaining phase margin ≥67° into 600 Ω + 1000 pF loads-critical for driving capacitive sensors or ADC input filters without instability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.8 V to 5 V single supply - supports direct connection to Li-ion or two-cell alkaline batteries without regulation. |
| Gain Bandwidth Product | 1.4 MHz - enables stable closed-loop gain up to ~100× at audio and low-speed sensor frequencies. |
| Supply Current per Channel | 100 µA - allows continuous operation in always-on automotive modules with sub-10 µW idle power budget. |
| Input Offset Voltage (max) | 4 mV - ensures ≤0.2% error in 2 V full-scale battery voltage monitoring at room temperature. |
| Output Swing (600 Ω load) | 80 mV from rails - delivers >95% dynamic range in 1.8 V systems, maximizing ADC utilization. |
| Common-Mode Input Range | VCC– – 0.2 V to VCC+ + 0.2 V - accepts inputs below ground or above VCC, essential for shunt-based current sensing. |
| Operating Temperature | –40°C to +125°C - meets AEC-Q100 Grade 1 requirements for engine bay and cabin electronics. |
Pinout & Package
SOT-23-5 package (DBV) with 5-pin surface-mount footprint measuring 2.9 mm × 1.6 mm × 1.15 mm, optimized for space-constrained automotive PCBs and thermally efficient layout with exposed pad not present.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN−) | Inverting input | Differential node for feedback or signal inversion; high-impedance (65 nA bias current) enables high-R gain networks. |
| 2 (IN+) | Non-inverting input | High-Z input accepting signals from sensors or reference dividers; supports VICR beyond rails. |
| 3 (V−) | Negative supply / GND | Reference return for single-supply operation; must be low-impedance to minimize PSRR degradation. |
| 4 (OUTPUT) | Amplifier output | Class AB stage capable of sourcing/sinking ≥3.3 mA; drives 600 Ω loads with <0.023% THD at 1 kHz. |
| 5 (V+) | Positive supply | Accepts 1.8–5 V; internal regulation ensures consistent biasing across voltage range. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full 0–1.8 V signal swing in low-voltage automotive domains without level-shifting circuitry. |
| AEC-Q100 Grade 1 qualification | Validated for automotive use from –40°C to +125°C ambient, including thermal cycling and ESD robustness (2 kV HBM). |
| 200 mV beyond-rail common-mode range | Permits direct measurement of battery voltage down to 0 V or up to VCC+0.2 V in unregulated systems. |
| 100 µA quiescent current | Supports always-on diagnostic functions in body control modules with <10 µW static power consumption. |
| 1.4 MHz GBW with 67° phase margin | Stable operation into capacitive loads up to 1000 pF, eliminating need for external compensation in sensor interface designs. |
Applications
| Automotive Battery Monitoring | Engine Control Unit (ECU) Sensor Interface |
|---|---|
Use Scenario: Real-time 12 V lead-acid or 48 V mild-hybrid battery voltage and current sensing in vehicle start-stop systems. IC Role / Device Role / Timing Role: Precision op-amp configured as difference amplifier for shunt-based current measurement and buffer for battery voltage divider output. Use Value: 4 mV max VIO and rail-to-rail I/O ensure ±0.5% full-scale accuracy over temperature without calibration, reducing BOM cost versus higher-precision alternatives. | Use Scenario: Signal conditioning of analog outputs from oxygen, knock, or manifold pressure sensors in engine management systems. IC Role / Device Role / Timing Role: Low-noise (60 nV/√Hz), low-drift amplifier front-end providing gain and filtering prior to ADC sampling. Use Value: 1.4 MHz GBW and 0.35 V/µs slew rate support accurate capture of transient combustion events up to 10 kHz without distortion. |
| Body Control Module (BCM) Power Supervision | Infotainment System Audio Line Driver |
Use Scenario: Monitoring of 5 V and 3.3 V domain supplies for fault detection and graceful shutdown sequencing in BCM microcontrollers. IC Role / Device Role / Timing Role: Comparator replacement in supply-good detection circuits using precise internal reference and hysteresis configuration. Use Value: 100 µA ICC enables continuous supervision without impacting system sleep current budgets, critical for ISO 21848 compliance. | Use Scenario: Driving balanced/unbalanced audio lines from DSP outputs to amplifier inputs in head unit and digital radio modules. IC Role / Device Role / Timing Role: Single-ended to differential converter and level shifter ensuring compatibility between 1.8 V logic and 3.3 V analog stages. Use Value: Rail-to-rail output swing preserves dynamic range across varying supply voltages, preventing clipping in wide-input-range audio paths. |
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 8 MHz GBW, 150 µA ICC, same SOT-23-5 package and AEC-Q100 Grade 1 rating. | Better suited for active filter or higher-frequency sensor signal chains where bandwidth >1.4 MHz is required. | Select when closed-loop bandwidth exceeds 100 kHz or when driving capacitive loads >2000 pF. |
| LMV931QDCKRQ1 | Identical electrical specs but SC-70-5 package (smaller footprint, higher thermal resistance: 252°C/W vs 206°C/W). | Preferred for ultra-dense layouts where 0.6 mm shorter length than SOT-23 is critical. | Choose only if board space savings outweigh thermal derating needs in high-ambient environments. |
Compared with TSV911IQDBVRQ1, LMV931QDBVRQ1 trades bandwidth for lower power and proven stability in legacy automotive designs; compared with LMV931QDCKRQ1, it offers better thermal performance in constrained airflow zones while maintaining identical functionality.
Availability
LMV931QDBVRQ1 is available at Aetrix Electronics and suitable for automotive battery monitoring, engine control unit (ECU) sensor interfaces, and body control module (BCM) power supervision requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LMV931QDBVRQ1 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 automotive-grade product development and manufacturing expertise.
The LMV93x-Q1 product line was designed specifically for automotive signal conditioning applications demanding rail-to-rail operation, low quiescent current, and AEC-Q100 qualification across –40°C to +125°C.
FAQ
What is the maximum supply voltage for LMV931QDBVRQ1?
The absolute maximum supply voltage (VCC+ – VCC–) for LMV931QDBVRQ1 is 5.5 V. Operation beyond this risks permanent damage. The recommended operating range is 1.8 V to 5 V, with full electrical specifications guaranteed across that span. At 5 V, the device delivers 1.5 MHz GBW and 4.855 V high-level output swing into 600 Ω, making LMV931QDBVRQ1 suitable for mixed-voltage automotive domains.
Does LMV931QDBVRQ1 support true rail-to-rail input at 1.8 V supply?
Yes, LMV931QDBVRQ1 supports rail-to-rail input with common-mode voltage range extending 200 mV beyond both supply rails (VCC– – 0.2 V to VCC+ + 0.2 V) at all supply voltages including 1.8 V. This enables direct interfacing with sensors whose outputs fall below ground or exceed VCC, such as shunt-based current monitors in low-voltage automotive subsystems using LMV931QDBVRQ1.
What is the output drive capability of LMV931QDBVRQ1 into a 600 Ω load?
At 1.8 V supply, LMV931QDBVRQ1 delivers ±3.3 mA short-circuit current and sustains 80 mV from each rail into a 600 Ω load, achieving >95% of full-scale swing. This drive strength supports direct connection to ADC inputs, RC filters, or low-power comparators without external buffering, a key advantage in compact LMV931QDBVRQ1-based sensor nodes.
Is LMV931QDBVRQ1 qualified for automotive applications?
Yes, LMV931QDBVRQ1 is AEC-Q100 Grade 1 qualified (–40°C to +125°C), with full characterization across temperature, humidity, and mechanical stress tests per automotive reliability standards. It is explicitly intended for safety-critical automotive subsystems including battery management, engine control, and ADAS sensor interfaces where LMV931QDBVRQ1's DC accuracy and thermal stability are validated.
How does the input offset voltage of LMV931QDBVRQ1 vary with temperature?
LMV931QDBVRQ1 has a typical input offset voltage temperature coefficient of 5.5 µV/°C. Over the full –40°C to +125°C range, VIO drift contributes ≤0.9 mV additional error beyond its 4 mV max room-temperature value. This predictable drift enables first-order software compensation in high-accuracy LMV931QDBVRQ1 implementations like battery voltage monitoring.
LMV931QDBVRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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:
- 15 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 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
LMV931QDBVRQ1 FAQ
1.How can I place an order for LMV931QDBVRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LMV931QDBVRQ1 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 LMV931QDBVRQ1 reliable?
The price and inventory of LMV931QDBVRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV931QDBVRQ1 is usually 5 days.
3.What payment methods are accepted for LMV931QDBVRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV931QDBVRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMV931QDBVRQ1?
LMV931QDBVRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMV931QDBVRQ1 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 LMV931QDBVRQ1?
For technical support, including LMV931QDBVRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV931QDBVRQ1 requirements.
6.How does Aetrix verify that LMV931QDBVRQ1 is sourced from the original manufacturer or authorized distributors?
All LMV931QDBVRQ1 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 LMV931QDBVRQ1 meets industry standards.
7.What is the process for return or replacement of LMV931QDBVRQ1?
All LMV931QDBVRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with LMV931QDBVRQ1, 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 LMV931QDBVRQ1 part is unused and in its original packaging.
Return procedure for LMV931QDBVRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LMV931QDBVRQ1 Tags
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LM358DT
STMicroelectronics
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LM358DR
Texas Instruments
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LM2904DR
Texas Instruments
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LM358ADR
Texas Instruments
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LM2904DGKR
Texas Instruments
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LM324DR
Texas Instruments
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MCP6006T-E/OT
Microchip Technology
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MCP6006UT-E/OT
Microchip Technology
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LM324PWR
Texas Instruments
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LM2902PWR
Texas Instruments
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LM2902DR
Texas Instruments
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LM358P
Texas Instruments
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