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Texas Instruments LMV931QDCKRQ1
- Part No.:
- LMV931QDCKRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
LMV931QDCKRQ1.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,227
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Product details
Overview
LMV931QDCKRQ1 from Texas Instruments is an automotive-grade single-channel rail-to-rail input/output operational amplifier in SC-70-5 package, delivering 1.4 MHz gain bandwidth, 100 µA per channel supply current, and 4 mV max input offset voltage at 1.8 V to 5 V operation. It enables precision signal conditioning in battery-powered automotive sensor interfaces and low-voltage power monitoring circuits.
For engineers reviewing the LMV931QDCKRQ1 datasheet, LMV931QDCKRQ1 pinout, LMV931QDCKRQ1 application, or LMV931QDCKRQ1 equivalent, key selection criteria include rail-to-rail output swing (80 mV from rail @ 600 Ω), extended common-mode range (200 mV beyond rails), −40°C to 125°C AEC-Q100 qualified operation, and SC-70 footprint compatibility with space-constrained PCB layouts.
Technical Context
The LMV931QDCKRQ1 employs a Class AB output stage optimized for low-voltage operation, supporting rail-to-rail output swing into 600 Ω loads while maintaining phase margin ≥67° and gain margin ≥7 dB across 1.8–5 V supply range. Its input stage extends common-mode voltage 200 mV beyond both supply rails, enabling direct sensing of signals near ground or VCC in single-supply systems.
Designed for automotive environments, the device features 2 kV HBM ESD protection, operates over full −40°C to 125°C junction temperature range, and maintains stable performance under supply variations (1.8 V to 5 V) with supply rejection ratio ≥65 dB and CMRR ≥55 dB across temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.8 V to 5 V - supports single-cell Li-ion (2.7–4.2 V) and two-cell alkaline/NiMH (2.4–3.2 V) battery systems without level-shifting. |
| Gain Bandwidth Product | 1.4 MHz - enables stable closed-loop gain up to ~100× at 14 kHz for sensor amplification and anti-aliasing filtering. |
| Input Offset Voltage (max) | 4 mV - ensures ≤0.4% error in 1 V full-scale battery voltage monitoring at room temperature. |
| Supply Current per Channel | 100 µA - allows continuous operation for >1 year on a 220 mAh coin cell in always-on automotive cabin sensors. |
| Rail-to-Rail Output Swing | 80 mV from rail @ 600 Ω - delivers 1.72 V output high and 0.077 V output low at 1.8 V supply, maximizing dynamic range. |
| Common-Mode Input Range | VCC− – 0.2 V to VCC+ + 0.2 V - accepts inputs 200 mV below ground or above VCC, critical for shunt-based current sensing. |
| Operating Temperature | −40°C to 125°C - qualified per AEC-Q100 Grade 1, suitable for engine bay and ADAS module placement. |
Pinout & Package
LMV931QDCKRQ1 is housed in a 5-pin SC-70 (DCK) package, measuring 2.0 mm × 1.25 mm × 0.9 mm, with gull-wing leads and 0.65 mm pitch. This ultra-compact outline supports high-density automotive PCB layouts and automated SMT assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | IN− | Inverting input - connects to feedback network or reference in precision comparator/amp configurations. |
| 2 | IN+ | Non-inverting input - accepts sensor signal, reference voltage, or battery tap for monitoring applications. |
| 3 | VCC− | Negative supply rail - tied to system ground in single-supply operation; enables true rail-to-rail input common-mode range. |
| 4 | OUTPUT | Amplifier output - drives ADC input, analog switch control line, or low-power transducer directly. |
| 5 | VCC+ | Positive supply rail - accepts 1.8 V, 2.7 V, or 5 V regulated supply; no external decoupling required for basic operation. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Drives within 80 mV of supply rails into 600 Ω, preserving >95% of available signal range at 1.8 V. |
| Extended input common-mode range | Accepts signals 200 mV below VCC− or above VCC+, enabling direct connection to shunt resistors grounded at either supply rail. |
| Low quiescent current | 100 µA per channel at 1.8 V allows integration into always-on vehicle subsystems without compromising battery life. |
| AEC-Q100 qualification | Qualified for automotive Grade 1 (−40°C to 125°C), including stress testing for temperature cycling, humidity, and mechanical shock. |
| Stable capacitive load drive | Drives 1000 pF with minimal ringing, eliminating need for isolation resistors when interfacing with ADC sample capacitors or long traces. |
Applications
| Battery Voltage Monitoring | Automotive Cabin Sensor Interface |
|---|---|
Use Scenario: Real-time monitoring of 12 V lead-acid or 48 V mild-hybrid battery voltage using a resistive divider feeding an ADC. IC Role / Device Role / Timing Role: Precision buffer and level-shifter that conditions divided battery voltage before ADC sampling, maintaining accuracy across temperature. Use Value: 4 mV max VIO and rail-to-rail output ensure <0.5% measurement error over full automotive temperature range without calibration. | Use Scenario: Signal conditioning for MEMS-based occupancy or air quality sensors mounted in vehicle pillars or headliners. IC Role / Device Role / Timing Role: Low-noise, low-power amplifier boosting weak sensor outputs to ADC-compliant levels in always-on mode. Use Value: 100 µA supply current and 60 nV/√Hz input noise enable reliable detection of sub-mV sensor signals while meeting ISO 16750-3 sleep current limits. |
| Engine Control Unit (ECU) Signal Conditioning | Body Control Module (BCM) Power Rail Sensing |
Use Scenario: Amplifying thermistor or RTD signals from coolant or oil temperature sensors in engine compartments. IC Role / Device Role / Timing Role: High-accuracy front-end amplifier with extended common-mode range accepting signals referenced to noisy chassis ground. Use Value: VICR extending 200 mV beyond rails allows direct connection to grounded-sensor configurations without level-shifting circuitry. | Use Scenario: Monitoring 5 V or 3.3 V power rails supplying microcontrollers and CAN transceivers in BCM modules. IC Role / Device Role / Timing Role: Precision voltage supervisor that triggers fault reporting when rail drops below threshold during cold-crank events. Use Value: Stable 1.4 MHz GBW and 72 dB large-signal gain ensure fast response (<10 µs) to transient rail sags while rejecting switching noise. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMV931QDBVRQ1 | Identical electrical specs; packaged in SOT-23-5 instead of SC-70-5 - 0.1 mm wider body, 0.95 mm height vs. 0.9 mm. | Suitable where existing SOT-23 land pattern is fixed; same thermal resistance (206°C/W vs. 252°C/W) but slightly better power dissipation margin. | Select when board layout uses SOT-23 footprint or requires lower thermal impedance. |
| TSV911IQDBVRQ1 | Higher 8 MHz GBW, 150 µA supply current, 1.8 mV max VIO, but only rated to 105°C (not 125°C) and lacks AEC-Q100 documentation for Grade 1. | Preferred for higher-speed signal paths (e.g., active filters), but not validated for under-hood deployment requiring full Grade 1 compliance. | Select only for cabin or non-thermal-critical modules where speed outweighs temperature rating. |
Compared with LMV931QDBVRQ1 and TSV911IQDBVRQ1, LMV931QDCKRQ1 provides optimal balance of automotive qualification, ultra-low power, and SC-70 space savings - making it the preferred choice for compact, thermally constrained, AEC-Q100–compliant designs.
Availability
LMV931QDCKRQ1 is available at Aetrix Electronics and suitable for automotive battery management, cabin sensor interfaces, ECU signal conditioning, and BCM power rail monitoring requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LMV931QDCKRQ1 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 solutions.
The LMV93x-Q1 product line was designed specifically for automotive signal conditioning in low-voltage, space-constrained systems - emphasizing rail-to-rail operation, AEC-Q100 qualification, and ultra-low quiescent current for always-on subsystems.
FAQ
What is the maximum operating temperature for LMV931QDCKRQ1?
The LMV931QDCKRQ1 is qualified for continuous operation from −40°C to +125°C ambient temperature, meeting AEC-Q100 Grade 1 requirements. Its internal junction temperature is rated to 150°C, and thermal resistance (θJA) is 252°C/W in the SC-70 package - allowing safe operation in engine bay and transmission control unit environments when power dissipation remains below 1.6 mW at 125°C ambient.
Does LMV931QDCKRQ1 support true rail-to-rail input operation?
Yes, LMV931QDCKRQ1 supports rail-to-rail input with a common-mode voltage range extending 200 mV beyond both supply rails (VCC− – 0.2 V to VCC+ + 0.2 V). This enables direct interface with grounded shunt resistors or signals referenced to either supply rail - a critical capability for current sensing and battery monitoring circuits where input signals may fall below ground or exceed VCC.
What is the typical output swing of LMV931QDCKRQ1 at 1.8 V supply?
At 1.8 V supply and 600 Ω load, LMV931QDCKRQ1 delivers typical output swing of 0.077 V (low) to 1.72 V (high), i.e., within 80 mV of each rail. At 2 kΩ load, swing improves to 0.024 V to 1.75 V. This rail-to-rail capability maximizes dynamic range in low-voltage systems such as single-cell Li-ion powered telematics modules.
Is LMV931QDCKRQ1 pin-compatible with other LMV93x-Q1 variants?
No - LMV931QDCKRQ1 is a single-channel amplifier in SC-70-5 package, while LMV932QDRQ1 (dual, SOIC-8) and LMV934QDRQ1 (quad, SOIC-14) have different pin counts and functions. The LMV931QDCKRQ1 pinout (IN−, IN+, VCC−, OUTPUT, VCC+) is unique to its 5-pin configuration and not interchangeable with dual or quad versions without PCB redesign.
What packaging and reel options are available for LMV931QDCKRQ1?
LMV931QDCKRQ1 is supplied in SC-70 (DCK) package, tape-and-reel format, with 3000 units per reel. The package features green RoHS-compliant finish (Pb-free, no Sb/Br), CU NIPDAU plating, and JEDEC MSL Level-1 rating (unlimited floor life at ≤30°C/60% RH), supporting standard SMT assembly processes without baking requirements.
LMV931QDCKRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- 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:
- SC-70-5
LMV931QDCKRQ1 FAQ
1.How can I place an order for LMV931QDCKRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LMV931QDCKRQ1 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 LMV931QDCKRQ1 reliable?
The price and inventory of LMV931QDCKRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV931QDCKRQ1 is usually 5 days.
3.What payment methods are accepted for LMV931QDCKRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV931QDCKRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMV931QDCKRQ1?
LMV931QDCKRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMV931QDCKRQ1 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 LMV931QDCKRQ1?
For technical support, including LMV931QDCKRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV931QDCKRQ1 requirements.
6.How does Aetrix verify that LMV931QDCKRQ1 is sourced from the original manufacturer or authorized distributors?
All LMV931QDCKRQ1 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 LMV931QDCKRQ1 meets industry standards.
7.What is the process for return or replacement of LMV931QDCKRQ1?
All LMV931QDCKRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with LMV931QDCKRQ1, 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 LMV931QDCKRQ1 part is unused and in its original packaging.
Return procedure for LMV931QDCKRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LMV931QDCKRQ1 Tags
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LM358DT
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LM358DR
Texas Instruments
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