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Texas Instruments LMV931IDCKRG4
- Part No.:
- LMV931IDCKRG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
LMV931IDCKRG4.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,578
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Product details
Overview
LMV931IDCKRG4 from Texas Instruments is a single-channel, rail-to-rail input/output operational amplifier optimized for 1.8-V to 5-V low-voltage portable applications. It delivers 1.4 MHz gain bandwidth, 100 μA supply current per channel, and rail-to-rail output swing within 80 mV of either rail under 600-Ω load - enabling high-fidelity signal conditioning in battery-powered energy metering and portable audio interfaces.
For engineers reviewing the LMV931IDCKRG4 datasheet, LMV931IDCKRG4 pinout, LMV931IDCKRG4 application, or LMV931IDCKRG4 equivalent, key selection criteria include its SC-70-5 package footprint, –40°C to 125°C operating range, 200-mV beyond-rail common-mode input range, and verified performance at 1.8-V supply - critical for space-constrained, low-power sensor front-ends and supply monitoring circuits.
Technical Context
The LMV931IDCKRG4 employs a Class AB output stage with complementary bipolar input transistors, enabling rail-to-rail input voltage range extending 200 mV beyond VCC– and VCC+, and output swing to within 80 mV of rails at 1.8 V/600 Ω. Its 1.4-MHz unity-gain bandwidth and 0.35 V/μs slew rate support stable closed-loop operation with capacitive loads up to 1000 pF.
Designed for single-supply operation, it features 101-dB open-loop DC gain, 75-dB CMRR over 0.2–1.6 V input range at 1.8 V, and 70-dB PSRR across 1.8–5 V supply variation - making it suitable for precision DC-coupled sensing where supply rejection and offset stability are essential.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.8 V to 5 V - supports direct connection to single-cell Li-ion (3.0–3.7 V) or two-cell alkaline (2.4–3.2 V) batteries without regulation. |
| Gain Bandwidth Product | 1.4 MHz - enables stable unity-gain buffer or gain-of-10 amplification up to ~140 kHz in sensor signal chains. |
| Supply Current per Channel | 100 μA - allows integration into always-on monitoring circuits with multi-year battery life in portable devices. |
| Input Offset Voltage (Max) | 4 mV - ensures ≤0.4% full-scale error in 1-V reference-based current-sense applications at room temperature. |
| Rail-to-Rail Output Swing | 80 mV from rail (600 Ω, 1.8 V) - preserves >95% dynamic range in 1.8-V ADC interfaces with minimal headroom loss. |
| Common-Mode Input Range | VCC– – 0.2 V to VCC+ + 0.2 V - accepts inputs below ground or above supply, simplifying level-shifting in mixed-supply systems. |
| Operating Temperature | –40°C to 125°C - qualified for under-hood automotive sensors and industrial utility metering environments. |
Pinout & Package
LMV931IDCKRG4 is housed in a 5-pin SC-70 (DCK) package - 2.0 mm × 1.25 mm, 0.65 mm pitch - optimized for ultra-compact PCB layouts in portable electronics.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | IN+ | Non-inverting input - accepts signals down to VCC– – 0.2 V, enabling true single-supply differential sensing. |
| 2 | IN− | Inverting input - matched bias current (65 nA typ) minimizes offset drift in high-impedance transducer interfaces. |
| 3 | VCC− | Negative supply rail - tied to GND in single-supply configurations; supports split-rail operation down to –2.75 V. |
| 4 | VCC+ | Positive supply rail - accepts 1.8–5 V; internal ESD protection rated to 2000 V HBM. |
| 5 | OUTPUT | Amplified output - drives 600-Ω loads to within 80 mV of rails, supporting direct connection to SAR ADC reference buffers. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full utilization of 1.8-V supply range in battery-powered systems without external level-shifting circuitry. |
| 200-mV beyond-rail common-mode input | Permits direct interfacing with sensors whose output exceeds supply rails, reducing BOM count in fault-monitoring designs. |
| 100-μA quiescent current | Supports continuous operation in energy-harvesting nodes and IoT endpoint sensors with sub-10-μA average system current budgets. |
| 1.4-MHz GBW at 1.8 V | Provides sufficient bandwidth for anti-aliasing filtering and fast-settling DC-coupled gain stages in 12-bit data acquisition paths. |
| –40°C to 125°C operation | Meets AEC-Q100 stress test requirements for automotive body electronics and industrial control ambient conditions. |
Applications
| Energy Metering Front-End | Portable Audio Line Driver |
|---|---|
Use Scenario: Amplifying shunt-based current measurements in smart electricity meters powered by 2-cell alkaline batteries (2.4–3.2 V). IC Role / Device Role / Timing Role: Precision single-ended instrumentation amplifier stage with rail-to-rail input to capture full dynamic range of ±50-mV shunt voltage. Use Value: 4-mV max VIO and 200-mV beyond-rail VICR eliminate need for input offset trimming or external biasing networks. | Use Scenario: Driving stereo headphone outputs in PDAs using a 1.8-V LDO-regulated supply. IC Role / Device Role / Timing Role: Low-noise (60 nV/√Hz), rail-to-rail output buffer delivering 0.023% THD at 1 kHz into 32-Ω loads. Use Value: 80-mV rail margin at 1.8 V ensures ≥1.7 Vpp output swing - sufficient for 1.2-Vrms line-level compliance without clipping. |
| Battery Voltage Monitor | Industrial Sensor Signal Conditioning |
Use Scenario: Monitoring Li-ion cell voltage (2.5–4.2 V) via resistive divider in wearables, with microcontroller ADC sampling at 1.8 V. IC Role / Device Role / Timing Role: Unity-gain buffer isolating high-impedance divider from ADC input while scaling to 0–1.8 V range. Use Value: 100-μA ICC enables continuous monitoring without compromising 5-year battery life targets in coin-cell-powered devices. | Use Scenario: Conditioning output of a 4–20 mA loop-powered pressure sensor in factory automation equipment operating at 125°C ambient. IC Role / Device Role / Timing Role: High-CMRR (75 dB min) differential receiver converting current-loop signal to ground-referenced voltage for isolation barrier input. Use Value: Guaranteed operation to 125°C and 70-dB kSVR ensure stable gain accuracy despite 24-V loop supply ripple and thermal drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV9001IDCKR | Lower 0.1-μV/°C VIO drift, 1-MHz GBW, same SC-70-5 package and 1.8–5.5-V supply range. | Better DC precision for long-term sensor calibration; lower bandwidth limits AC response vs. LMV931IDCKRG4. | Select TLV9001IDCKR when offset drift dominates error budget; retain LMV931IDCKRG4 for higher-speed buffering. |
| OPA316IDBVR | Higher 10-MHz GBW, 250-μA ICC, SOT-23-5 package (DBV), 1.8–5.5-V supply. | Superior speed for active filters or fast-settling DAC buffers; increased supply current reduces battery runtime. | Choose OPA316IDBVR for bandwidth-critical signal paths; LMV931IDCKRG4 remains optimal for ultra-low-power, moderate-bandwidth use cases. |
Compared with TLV9001IDCKR and OPA316IDBVR, LMV931IDCKRG4 uniquely balances 1.4-MHz bandwidth, 100-μA quiescent current, and 200-mV beyond-rail input in SC-70 - making it the most cost-effective solution for battery-operated metering and audio where precision and power coexist.
Availability
LMV931IDCKRG4 is available at Aetrix Electronics and suitable for energy metering, portable audio, battery monitoring, and industrial sensor signal conditioning requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LMV931IDCKRG4 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 family was designed specifically for ultra-low-voltage, rail-to-rail operational amplifier applications in portable and battery-powered systems - emphasizing space efficiency, wide supply flexibility, and robust performance across automotive and industrial temperature ranges.
FAQ
What is the maximum operating supply voltage for LMV931IDCKRG4?
The absolute maximum supply voltage (VCC+ – VCC–) for LMV931IDCKRG4 is 5.5 V, but the recommended operating range is 1.8 V to 5 V per the datasheet. Operation at 5.5 V is not guaranteed for parametric performance and may impact reliability; sustained use above 5 V is outside specification and not advised in production designs using LMV931IDCKRG4.
Does LMV931IDCKRG4 support true rail-to-rail input at 1.8-V supply?
Yes, LMV931IDCKRG4 supports rail-to-rail input with common-mode range extending 200 mV beyond both rails (VCC– – 0.2 V to VCC+ + 0.2 V) at 1.8 V. This is confirmed in the Electrical Characteristics table for VICR under VCC = 1.8 V, enabling direct interface with sensors whose output exceeds the supply rails - a key capability verified for LMV931IDCKRG4 across its full temperature range.
Is LMV931IDCKRG4 pin-compatible with other LMV93x variants?
No, LMV931IDCKRG4 is not pin-compatible with LMV932 or LMV934. It uses a 5-pin SC-70 (DCK) package with dedicated IN+, IN−, VCC−, VCC+, and OUTPUT pins. LMV932 (8-pin) and LMV934 (14-pin) have different pin counts, spacing, and internal channel arrangements - requiring separate PCB layouts. Pin compatibility applies only within the same channel count and package type (e.g., LMV931IDCKRG4 ↔ LMV931IDCKR).
What is the typical output drive capability of LMV931IDCKRG4 into a 600-Ω load?
At 1.8-V supply, LMV931IDCKRG4 delivers rail-to-rail output swing to within 80 mV of each rail into a 600-Ω load, as specified in the Electrical Characteristics table. It sources up to 3.3 mA and sinks up to 5 mA under these conditions - sufficient to drive ADC reference buffers, low-impedance audio lines, or precision voltage followers without external gain boosting.
Is LMV931IDCKRG4 suitable for automotive applications?
Yes, LMV931IDCKRG4 is characterized for operation from –40°C to 125°C and meets automotive ambient requirements for body electronics and infotainment subsystems. While not AEC-Q200 qualified as a standalone component, its specified temperature range, 2000-V HBM ESD rating, and stable performance across 1.8–5 V supply make it suitable for non-safety-critical automotive functions such as cabin sensor interfaces and display biasing when used within LMV931IDCKRG4's validated operating conditions.
LMV931IDCKRG4 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:
- -
- Voltage - Supply Span (Min):
- 1.8 V
- Voltage - Supply Span (Max):
- 5 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-5
LMV931IDCKRG4 FAQ
1.How can I place an order for LMV931IDCKRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for LMV931IDCKRG4 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 LMV931IDCKRG4 reliable?
The price and inventory of LMV931IDCKRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV931IDCKRG4 is usually 5 days.
3.What payment methods are accepted for LMV931IDCKRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV931IDCKRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMV931IDCKRG4?
LMV931IDCKRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMV931IDCKRG4 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 LMV931IDCKRG4?
For technical support, including LMV931IDCKRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV931IDCKRG4 requirements.
6.How does Aetrix verify that LMV931IDCKRG4 is sourced from the original manufacturer or authorized distributors?
All LMV931IDCKRG4 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 LMV931IDCKRG4 meets industry standards.
7.What is the process for return or replacement of LMV931IDCKRG4?
All LMV931IDCKRG4 units undergo pre-shipment inspection (PSI). If there is an issue with LMV931IDCKRG4, 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 LMV931IDCKRG4 part is unused and in its original packaging.
Return procedure for LMV931IDCKRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LMV931IDCKRG4 Tags
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LM358DR
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