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Texas Instruments LMV931IDCKRE4
- Part No.:
- LMV931IDCKRE4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
LMV931IDCKRE4.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,345
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Product details
Overview
LMV931IDCKRE4 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 each rail under 600-Ω load - enabling high-fidelity signal conditioning in battery-powered energy metering and sensor front-ends.
For engineers reviewing the LMV931IDCKRE4 datasheet, LMV931IDCKRE4 pinout, LMV931IDCKRE4 application, or LMV931IDCKRE4 equivalent, key selection criteria include its SC-70-5 package footprint, 200-mV beyond-rail common-mode input range, −40°C to +125°C operating temperature, and verified performance at 1.8-V supply - critical for space-constrained, low-power industrial and automotive subsystems.
Technical Context
The LMV931IDCKRE4 employs a Class AB output stage with complementary bipolar input transistors, enabling rail-to-rail input operation down to VCC− − 0.2 V and up to VCC+ + 0.2 V. Its internal bias network supports stable quiescent current across 1.8–5 V supplies while maintaining >73 dB CMRR over full temperature range.
Designed for unity-gain stability with capacitive loads up to 1000 pF, it achieves 67° phase margin at 1.8 V and 71° at 5 V (RL = 600 Ω), with slew rate scaling from 0.35 V/μs to 0.42 V/μs across supply voltage - confirming robust small-signal transient response without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.8 V to 5 V - enables direct interface with single-cell Li-ion (3.0–4.2 V) or two-cell alkaline (2.4–3.2 V) batteries without regulation. |
| Gain Bandwidth Product | 1.4 MHz - supports closed-loop bandwidths up to ~1.2 MHz at AV = 1, suitable for anti-aliasing and sensor signal amplification. |
| Supply Current per Channel | 100 μA typical at 1.8 V - allows integration into always-on monitoring circuits with sub-10-μA system sleep budgets. |
| Input Offset Voltage | Max 4 mV at 25°C - ensures ≤0.4% error in 1-V full-scale analog front-ends without trimming. |
| Output Swing (600 Ω) | Within 80 mV of rails at 1.8 V - preserves >90% dynamic range in low-voltage ADC driver applications. |
| Common-Mode Input Range | VCC− − 0.2 V to VCC+ + 0.2 V - accepts inputs beyond supply rails, simplifying level-shifting in mixed-supply systems. |
| Operating Temperature | −40°C to +125°C - qualified for under-hood automotive and industrial utility meter environments. |
Pinout & Package
LMV931IDCKRE4 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 and wearable electronics.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN+) | Non-inverting input | High-impedance node accepting signals from sensors or DACs; supports common-mode voltages beyond rails. |
| 2 (IN−) | Inverting input | Feedback node for closed-loop configurations; matched to IN+ for low offset drift. |
| 3 (VCC−) | Negative supply rail | Ground reference in single-supply operation; must be connected directly to PCB ground plane. |
| 4 (VCC+) | Positive supply rail | Accepts 1.8–5 V; decoupling capacitor (0.1 μF) required within 2 mm for stability. |
| 5 (OUTPUT) | Amplifier output | Capable of sourcing/sinking ≥20 mA; drives 600-Ω loads with <0.1% THD at 1 kHz. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail I/O | Enables full utilization of 1.8-V supply headroom - eliminates need for level-shifting in 12-bit SAR ADC interfaces. |
| 200-mV beyond-rail VICR | Permits direct connection to ±100-mV sensor outputs (e.g., bridge-based pressure transducers) without external biasing. |
| 100-μA quiescent current | Supports continuous operation in battery-powered devices with >5-year shelf life on CR2032 coin cells. |
| 1.4-MHz GBW at 1.8 V | Delivers usable bandwidth for 10-kHz sensor signals with >60-dB loop gain margin in unity-gain follower mode. |
| −40°C to +125°C rating | Validated for use in automotive cabin modules and smart grid metering terminals without derating. |
Applications
| Energy Metering Front-End | Automotive Cabin Sensor Interface |
|---|---|
Use Scenario: Amplifying low-level shunt voltage (±50 mV) in polyphase electricity meters with 1.8-V MCU supply. IC Role / Device Role / Timing Role: Precision non-inverting amplifier with gain = 20, driving 12-bit SAR ADC input. Use Value: 4-mV max VIO contributes <0.2% gain error; rail-to-rail output ensures full ADC code utilization across 0–1.8 V range. | Use Scenario: Conditioning NTC thermistor output in HVAC control module operating from 12-V battery via LDO. IC Role / Device Role / Timing Role: Rail-to-rail buffer isolating thermistor divider from ADC input leakage. Use Value: 200-mV beyond-rail VICR accommodates thermistor voltage swing from 0.1 V to 1.9 V at 1.8-V LDO output. |
| Portable Audio Line Driver | Battery Voltage Monitor |
Use Scenario: Driving 32-Ω headphones from 2.7-V codec output in Bluetooth earbuds. IC Role / Device Role / Timing Role: Low-noise (60 nV/√Hz) unity-gain buffer with shutdown control. Use Value: 0.022% THD at 1 kHz ensures audible fidelity; 100-μA ICC extends playback time by >8% vs. standard op-amps. | Use Scenario: Monitoring Li-ion cell voltage (2.5–4.2 V) using 5-V MCU ADC with 1.8-V reference. IC Role / Device Role / Timing Role: High-impedance voltage follower scaling cell voltage to 0–1.8 V range. Use Value: 1.8-V operation eliminates need for separate 3.3-V rail; 80-mV output swing margin prevents clipping at low SOC. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-voltage rail-to-rail op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP6001T-E/OT | Higher 100-kHz GBW, 100-μA ICC, but only 100-mV beyond-rail VICR (vs. 200 mV). | Limited to 2.2-V min supply; unsuitable for 1.8-V systems requiring full rail compliance. | Select when supply ≥2.2 V and VICR margin <200 mV suffices; avoid for 1.8-V energy metering. |
| TSV911ICT | 1.6-MHz GBW, 130-μA ICC, same SC-70-5 package, but VICR limited to rails (not beyond). | Cannot accept inputs below VCC− or above VCC+; requires external biasing for bipolar sensor signals. | Prefer for higher-bandwidth 2.7-V+ applications where input range stays within rails. |
Compared with MCP6001T-E/OT and TSV911ICT, LMV931IDCKRE4 uniquely supports true 1.8-V operation with 200-mV beyond-rail input range and guaranteed 80-mV output swing - making it the only choice for unbuffered shunt-based current sensing in ultra-low-voltage utility meters.
Availability
LMV931IDCKRE4 is available at Aetrix Electronics and suitable for energy metering, automotive cabin electronics, and portable audio applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LMV931IDCKRE4 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 delivering analog and embedded processing solutions for industrial, automotive, and consumer markets.
The LMV93x product line was designed specifically for low-voltage, low-power signal conditioning in battery-operated and energy-efficient systems - emphasizing rail-to-rail operation, micropower consumption, and wide-temperature reliability.
FAQ
What is the maximum supply voltage for LMV931IDCKRE4?
The absolute maximum supply voltage (VCC+ – VCC−) for LMV931IDCKRE4 is 5.5 V, but the recommended operating range is 1.8 V to 5 V. Operation at 5.5 V exceeds specification limits and may compromise reliability or parametric performance. For designs targeting 5-V systems, LMV931IDCKRE4 operates fully specified at 5 V with 1.5-MHz GBW and 116-μA typical supply current.
Does LMV931IDCKRE4 support rail-to-rail input at 1.8-V supply?
Yes, LMV931IDCKRE4 supports rail-to-rail input with a common-mode range extending 200 mV beyond both rails (VCC− − 0.2 V to VCC+ + 0.2 V) at all supply voltages including 1.8 V. This is confirmed in the Electrical Characteristics table (VICR parameter) and enables direct interfacing with sensors whose output swings below ground or above VCC+ in low-voltage systems.
What is the output drive capability of LMV931IDCKRE4 into a 600-Ω load?
At 1.8-V supply, LMV931IDCKRE4 delivers rail-to-rail output swing within 80 mV of each rail into a 600-Ω load - meaning minimum output is ≤0.08 V and maximum is ≥1.72 V. It can source ≥20 mA and sink ≥15 mA (typical at 25°C), supporting direct drive of moderate-impedance loads without external buffers.
Is LMV931IDCKRE4 pin-compatible with other LMV93x variants?
No, LMV931IDCKRE4 is not pin-compatible with LMV932 (dual) or LMV934 (quad) variants. The LMV931 uses a 5-pin SC-70 package (DCK), while LMV932 uses 8-pin MSOP/SOIC and LMV934 uses 14-pin SOIC/TSSOP. Pin functions differ across channels - e.g., LMV932 has dedicated VCC+ and VCC− pins per amplifier pair, whereas LMV931 shares single supply pins.
What is the thermal performance of LMV931IDCKRE4 in SC-70 package?
LMV931IDCKRE4 in SC-70 (DCK) package has a junction-to-ambient thermal resistance (θJA) of 252°C/W. At 100-μA supply current and 1.8-V supply, power dissipation is ~180 μW, resulting in negligible junction temperature rise (<0.05°C) in still air - eliminating need for thermal relief pads in most PCB layouts.
LMV931IDCKRE4 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
LMV931IDCKRE4 FAQ
1.How can I place an order for LMV931IDCKRE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for LMV931IDCKRE4 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 LMV931IDCKRE4 reliable?
The price and inventory of LMV931IDCKRE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV931IDCKRE4 is usually 5 days.
3.What payment methods are accepted for LMV931IDCKRE4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV931IDCKRE4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMV931IDCKRE4?
LMV931IDCKRE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMV931IDCKRE4 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 LMV931IDCKRE4?
For technical support, including LMV931IDCKRE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV931IDCKRE4 requirements.
6.How does Aetrix verify that LMV931IDCKRE4 is sourced from the original manufacturer or authorized distributors?
All LMV931IDCKRE4 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 LMV931IDCKRE4 meets industry standards.
7.What is the process for return or replacement of LMV931IDCKRE4?
All LMV931IDCKRE4 units undergo pre-shipment inspection (PSI). If there is an issue with LMV931IDCKRE4, 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 LMV931IDCKRE4 part is unused and in its original packaging.
Return procedure for LMV931IDCKRE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LMV931IDCKRE4 Tags
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