My Inquiry
My Account
Texas Instruments LMV931MF
- Part No.:
- LMV931MF
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LMV931MF.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:601
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LMV931MF from Texas Instruments is a single-channel, rail-to-rail input/output (RRIO) operational amplifier optimized for 1.8-V operation, delivering 1.4-MHz gain bandwidth, 100-μA supply current per channel, and output swing within 30 mV of rails under 2-kΩ load - enabling precision signal conditioning in space-constrained, battery-powered health monitors and wearables.
For engineers reviewing the LMV931MF datasheet, LMV931MF pinout, LMV931MF application, or LMV931MF equivalent, key selection criteria include its −40°C to +125°C operating range, 200-mV beyond-rail input common-mode voltage, ultra-low power consumption at 1.8 V, and compatibility with SC70/SOT-23 packaging for high-density portable PCB layouts.
Technical Context
The LMV931MF implements a CMOS input stage enabling rail-to-rail input common-mode range extending 200 mV beyond V− and V+, and an AB-class output stage supporting rail-to-rail swing with 600-Ω and 2-kΩ loads. Its 1.4-MHz GBW and 0.35-V/μs slew rate are specified at 1.8-V supply, with stable operation driving up to 1000-pF capacitive loads.
DC performance includes 101-dB open-loop gain, 4-mV max input offset voltage, and 78-dB min CMRR over full temperature range. It operates across 1.8–5.5-V supply, supports single- or split-supply configurations, and features 2000-V HBM ESD rating per ANSI/ESDA/JEDEC JS-001.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.8 V to 5.5 V - enables direct use in single-cell Li-ion (2.7–4.2 V), two-cell alkaline (2.4–3.2 V), and low-voltage logic systems without level-shifting. |
| Gain Bandwidth Product | 1.4 MHz at 1.8 V - supports stable unity-gain buffering and low-frequency filtering (e.g., <100 kHz sensor signal chains) with minimal phase margin degradation. |
| Supply Current per Channel | 103 μA typical at 1.8 V - allows >10-year battery life in coin-cell-powered devices when used in low-duty-cycle sensor front-ends. |
| Input Offset Voltage | Max 4 mV at 25°C - ensures ≤0.2% error in 12-bit ADC interfaces with 2-V full-scale range, critical for medical-grade analog front-ends. |
| Output Swing (2-kΩ) | Within 30 mV of each rail at 1.8 V - permits full dynamic range utilization in single-supply 1.8-V microcontroller ADC reference designs. |
| Input Common-Mode Range | V− − 0.2 V to V+ + 0.2 V - enables accurate sensing of signals below ground or above supply (e.g., current-sense shunt monitoring in high-side configurations). |
| Operating Temperature | −40°C to +125°C - qualified for automotive cabin electronics, industrial wearable sensors, and extended-life portable diagnostics equipment. |
Pinout & Package
LMV931MF is available in the 5-pin SC70 (DCK) package (2.00 mm × 1.25 mm) and SOT-23 (DBV) package (2.90 mm × 1.60 mm), both surface-mount, lead-free, RoHS-compliant packages optimized for automated assembly and thermal performance in thin-profile portable devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| +IN (Pin 1) | Noninverting Input | High-impedance CMOS node accepting signals from sensors or DACs; supports common-mode voltages down to V− − 0.2 V. |
| V− (Pin 2) | Negative Supply | Ground reference in single-supply operation; connects to system GND or negative rail in split-supply configurations. |
| −IN (Pin 3) | Inverting Input | Feedback node for closed-loop configurations; matched bias current minimizes offset in transimpedance amplifiers. |
| OUT (Pin 4) | Amplifier Output | Class-AB rail-to-rail output capable of sourcing/sinking ≥4 mA into 600-Ω loads while maintaining linearity and low THD. |
| V+ (Pin 5) | Positive Supply | Primary power connection; decoupling capacitor (0.1 μF) required within 2 mm for stability with capacitive loads. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-Rail Input/Output | Enables full utilization of 1.8-V supply range in single-supply systems - eliminates need for external level shifters in wearable biosensor front-ends. |
| 100-μA Supply Current | Reduces quiescent power to 180 nW at 1.8 V - extends battery life in always-on heart-rate monitor modules using intermittent sampling. |
| 200-mV Beyond-Rail Input Range | Supports high-side current sensing with shunt placed between load and V+ without requiring charge-pump biasing circuitry. |
| Stable Driving of 1000-pF Loads | Eliminates external isolation resistors in ADC driver applications, simplifying layout and reducing component count in compact medical patches. |
| −40°C to +125°C Operation | Validated performance across automotive interior environments and industrial handheld test equipment without derating or thermal management. |
Applications
| Portable Health Monitor | Smart Wearable Sensor Hub |
|---|---|
|
Use Scenario: Amplifying low-amplitude ECG or PPG signals from dry electrodes in a wrist-worn device powered by a 3.0-V coin cell. IC Role / Device Role / Timing Role: Single-supply RRIO op-amp configured as non-inverting amplifier (G = 100) and DC-coupled buffer before 12-bit SAR ADC. Use Value: 30-mV rail-to-rail swing preserves 98% of 1.8-V ADC full scale; 100-μA quiescent current enables >3-year battery life with 1-Hz sampling. |
Use Scenario: Conditioning analog outputs from multiple MEMS accelerometers, gyroscopes, and temperature sensors on a fitness tracker PCB. IC Role / Device Role / Timing Role: Low-power signal conditioner providing gain, offset correction, and drive capability for multiplexed ADC inputs. Use Value: 200-mV beyond-rail input range accommodates sensor offsets without external biasing; SC70 footprint saves >1.5 mm² vs SOIC alternatives. |
| Battery Voltage Monitor | Low-Power Industrial Sensor Node |
|
Use Scenario: Measuring cell voltage in a two-cell Li-ion pack (2.7–8.4 V) using resistor-divider scaling and precision buffering. IC Role / Device Role / Timing Role: Unity-gain voltage follower isolating high-impedance divider from ADC input, rejecting noise via 78-dB CMRR. Use Value: 4-mV max VOS contributes <0.05% error in 4-V measurement range; 1.8-V operation allows direct interface to ultra-low-power microcontrollers. |
Use Scenario: Signal conditioning for 4–20-mA loop-powered pressure transmitters deployed in remote industrial IoT gateways. IC Role / Device Role / Timing Role: Precision I/V converter and filter stage operating from local 3.3-V LDO, interfacing to isolated RS-485 transceivers. Use Value: 101-dB open-loop gain ensures <0.001% nonlinearity in 16-bit measurement systems; 125°C rating supports deployment in uncooled enclosures. |
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), same 1.8-V min supply; SC70-5 package identical. | Marginally lower bandwidth limits use in >100-kHz sensor excitation; suitable for DC-coupled biopotential amplification only. | Select when cost sensitivity outweighs 0.4-MHz bandwidth requirement and 101-dB gain is not needed for 16-bit systems. |
| TSV911ICT | Higher supply current (160 μA), wider supply range (2.5–5.5 V), no sub-2-V operation; same SC70-5 footprint. | Cannot operate from 1.8-V sources - excludes single-cell Li-ion or energy-harvesting nodes; better PSRR (105 dB) for noisy industrial supplies. | Choose where 2.5-V minimum supply is acceptable and superior power-supply noise rejection is prioritized over battery life. |
Compared with MCP6001T-E/OT and TSV911ICT, LMV931MF uniquely balances 1.4-MHz bandwidth, 100-μA quiescent current, and true 1.8-V operation in SC70 - making it the only option among the three viable for long-life, single-cell-powered medical wearables requiring full rail-to-rail signal fidelity.
Availability
LMV931MF is available at Aetrix Electronics and suitable for portable health monitors, smart wearables, and battery voltage monitoring systems requiring stable component supply, long-term manufacturability, and guaranteed RoHS/REACH compliance.
Supply support for LMV931MF 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, power management, and signal chain solutions.
The LMV93x-N family was designed specifically for ultra-low-voltage, battery-constrained applications - targeting portable medical devices, wearables, and IoT edge sensors where 1.8-V operation, rail-to-rail performance, and miniature packaging are mandatory.
FAQ
What supply voltage range does the LMV931MF support?
The LMV931MF operates from 1.8 V to 5.5 V, with full specifications guaranteed at 1.8 V, 2.7 V, and 5 V. This makes LMV931MF ideal for single-cell Li-ion (2.7–4.2 V), two-cell alkaline (2.4–3.2 V), and universal low-voltage logic systems - all without performance compromise or external regulation.
Does the LMV931MF support rail-to-rail input and output?
Yes, LMV931MF provides true rail-to-rail input and output operation. Its input common-mode range extends 200 mV beyond both supply rails (V− − 0.2 V to V+ + 0.2 V), and output swings to within 30 mV of each rail under 2-kΩ load at 1.8 V - enabling maximum dynamic range in single-supply 1.8-V systems.
What is the typical quiescent current of the LMV931MF?
The LMV931MF draws 103 μA typical supply current per channel at 1.8 V and 25°C, with a maximum of 205 μA across temperature and process variation. This ultra-low current allows LMV931MF to extend battery life significantly in always-on wearable and portable diagnostic devices.
Which packages are available for the LMV931MF?
LMV931MF is offered in two ultra-small surface-mount packages: the 5-pin SC70 (DCK, 2.00 mm × 1.25 mm) and the 5-pin SOT-23 (DBV, 2.90 mm × 1.60 mm). Both are RoHS-compliant, lead-free, and optimized for high-density portable PCBs and automated reflow assembly.
Can the LMV931MF drive capacitive loads?
Yes, LMV931MF is characterized to drive up to 1000-pF capacitive loads with minimal ringing or instability - a key advantage over many low-power op-amps. This capability eliminates the need for series isolation resistors when driving ADC inputs or long PCB traces, simplifying design and improving signal integrity in LMV931MF-based sensor interfaces.
LMV931MF 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:
- 14 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):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
LMV931MF FAQ
1.How can I place an order for LMV931MF through Aetrix?
Please submit a Request for Quotation (RFQ) for LMV931MF 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 LMV931MF reliable?
The price and inventory of LMV931MF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV931MF is usually 5 days.
3.What payment methods are accepted for LMV931MF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV931MF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMV931MF?
LMV931MF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMV931MF 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 LMV931MF?
For technical support, including LMV931MF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV931MF requirements.
6.How does Aetrix verify that LMV931MF is sourced from the original manufacturer or authorized distributors?
All LMV931MF 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 LMV931MF meets industry standards.
7.What is the process for return or replacement of LMV931MF?
All LMV931MF units undergo pre-shipment inspection (PSI). If there is an issue with LMV931MF, 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 LMV931MF part is unused and in its original packaging.
Return procedure for LMV931MF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LMV931MF Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
