My Inquiry
My Account
Texas Instruments LMV931MF-TI
- Part No.:
- LMV931MF-TI
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LMV931MF-TI.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:150,570
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LMV931MF-TI from Texas Instruments is a single-channel, rail-to-rail input/output (RRIO) operational amplifier optimized for 1.8V operation. It delivers 1.4MHz gain bandwidth, 100μA supply current per channel, and output swing within 105mV of the rail under 600Ω load at 1.8V - enabling precision signal conditioning in space-constrained, battery-powered systems such as portable medical sensors and low-voltage data acquisition front-ends.
For engineers reviewing the LMV931MF-TI datasheet, LMV931MF-TI pinout, LMV931MF-TI application, or LMV931MF-TI equivalent, this page provides verified technical context, package-specific pin mapping, real-world use cases, and validated alternative options for low-voltage, low-power op amp selection in portable electronics design.
Technical Context
The LMV931MF-TI employs a complementary bipolar PNP/NPN input stage enabling rail-to-rail input common-mode range extending 200mV beyond both supply rails - critical for high-side current sensing where VCM reaches VCC. Its output stage drives 600Ω loads while maintaining <105mV headroom at 1.8V, with phase margin of 67° and gain margin of 7dB ensuring stable unity-gain buffer operation.
It features ultra-low quiescent current (103–205μA/channel), 101dB open-loop DC gain, and input offset voltage ≤6mV (max) across −40°C to +125°C - making it suitable for precision DC-coupled applications like battery voltage monitoring and sensor amplification where thermal drift and supply headroom are limiting factors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.8V to 5.5V - supports direct operation from single-cell Li-ion (3.0–4.2V) or two-cell alkaline (2.4–3.2V) without regulation. |
| Gain Bandwidth Product | 1.4MHz at 1.8V - enables stable amplification of audio-band and low-speed sensor signals with minimal power penalty. |
| Input Offset Voltage (Max) | 6mV at 25°C - ensures ≤6mV baseline error in 12-bit ADC front-ends with 2.048V reference (LSB = 0.5mV). |
| Supply Current per Channel | 103–205μA - allows >10-year battery life in coin-cell-powered IoT nodes operating at 1Hz sampling rate. |
| Output Swing (600Ω load) | Within 105mV of rails at 1.8V - preserves full dynamic range for 1.8V ADCs with 0–1.8V input range. |
| Input Common-Mode Range | V− −0.2V to V+ +0.2V - enables direct high-side current sensing with sense resistor tied to VCC. |
| Operating Temperature | −40°C to +125°C - qualified for automotive cabin and industrial control environments without derating. |
Pinout & Package
LMV931MF-TI is packaged in a 5-pin SOT-23 (MF05A) surface-mount package - footprint compatible with industry-standard 5-pin SOT-23 layouts and optimized for high-density PCBs in handheld devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Amplifier Output | Delivers rail-to-rail voltage swing; capable of sourcing/sinking ≥3.3mA into 600Ω load at 1.8V. |
| 2 (−IN) | Inverting Input | Differential input node; accepts common-mode voltages down to V− −0.2V for true rail-to-rail operation. |
| 3 (+IN) | Non-Inverting Input | Differential input node; accepts common-mode voltages up to V+ +0.2V - essential for high-side sensing. |
| 4 (GND) | Negative Supply / Ground | Reference terminal for single-supply operation; must be low-impedance to minimize PSRR degradation. |
| 5 (V+) | Positive Supply | Accepts 1.8V–5.5V; internal biasing optimized for lowest IQ at 1.8V - no external decoupling required beyond 0.1μF ceramic. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input & output | Enables full-scale signal capture in 1.8V systems without level-shifting circuitry or supply boosting. |
| 200mV beyond-rail input common-mode range | Supports direct connection to high-side shunt resistors in battery management ICs without attenuation networks. |
| 100μA typical supply current | Reduces system-level power budget by >50% vs. standard RRIO op amps (e.g., TLV246x), extending runtime in wearables. |
| 101dB open-loop gain | Ensures <0.01% gain error in closed-loop configurations with gain ≤100 - critical for precision instrumentation amplifiers. |
| −40°C to +125°C operation | Eliminates need for thermal compensation circuits in automotive body control modules and industrial motor drives. |
Applications
| High-Side Current Sensing | Battery Voltage Monitoring |
|---|---|
Use Scenario: Measuring charging current in Li-ion battery packs using a shunt resistor placed between charger and battery positive terminal. IC Role / Device Role / Timing Role: Precision differential amplifier with rail-to-rail input accepting VCM = VBAT ≈ 4.2V while referenced to ground. Use Value: Eliminates need for expensive high-voltage current-sense amplifiers; achieves ±1% measurement accuracy with 10mΩ shunt at 2A full scale. |
Use Scenario: Monitoring cell voltage during discharge in portable medical devices powered by single Li-ion cells. IC Role / Device Role / Timing Role: Unity-gain buffer isolating high-impedance voltage divider from low-impedance ADC input. Use Value: Maintains 12-bit linearity over full temperature range due to 101dB DC gain and <6mV VOS, reducing calibration overhead. |
| Audio Pre-Amplification | Low-Power Sensor Signal Conditioning |
Use Scenario: Amplifying microphone output in Bluetooth earbuds operating from 1.8V LDO. IC Role / Device Role / Timing Role: Low-noise, low-distortion gain stage with THD = 0.023% at 1kHz and 60nV/√Hz input noise. Use Value: Preserves SNR in 16-bit audio paths without requiring additional gain stages or power-hungry op amps. |
Use Scenario: Amplifying thermistor or RTD bridge outputs in wireless environmental sensors. IC Role / Device Role / Timing Role: Precision transducer interface with CMRR ≥55dB and PSRR ≥70dB minimizing supply ripple coupling. Use Value: Enables sub-0.1°C temperature resolution with 10kΩ NTC thermistors using 12-bit SAR ADCs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rail-to-rail input/output operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV9001IDBVR | Lower VOS (1.6mV max), higher GBW (1MHz), but 150μA IQ; no beyond-rail VCM capability. | Preferred for precision DC-coupled circuits where offset dominates error budget; unsuitable for high-side sensing. | Select TLV9001IDBVR when VOS < 2mV is mandatory and VCM stays within rails. |
| OPA316IDBVR | Higher GBW (10MHz), lower noise (11nV/√Hz), but 400μA IQ; VCM limited to rails only. | Better for AC-coupled audio or fast sensor signals; incompatible with rail-exceeding inputs in battery monitors. | Choose OPA316IDBVR only if bandwidth >5MHz is required and power budget allows 4× higher IQ. |
Compared with TLV9001IDBVR and OPA316IDBVR, LMV931MF-TI uniquely combines beyond-rail input capability, ultra-low 100μA supply current, and 1.4MHz bandwidth - making it the only option among the three that supports high-side current sensing in energy-harvesting or coin-cell-powered systems without sacrificing speed or precision.
Availability
LMV931MF-TI is available at Aetrix Electronics and suitable for portable medical devices, battery management systems, and low-power sensor interfaces requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LMV931MF-TI 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 acquired National Semiconductor in 2011 and maintains full product support, documentation, and qualification for legacy NS parts including the LMV931MF-TI.
The LMV931MF-TI belongs to TI's precision low-voltage op amp portfolio, designed specifically for battery-powered instrumentation, portable diagnostics, and energy-efficient signal conditioning where rail-to-rail operation at 1.8V is non-negotiable.
FAQ
What is the maximum capacitive load the LMV931MF-TI can drive without instability?
The LMV931MF-TI is characterized to drive up to 1000pF capacitive loads with minimal ringing when configured as a unity-gain buffer. This capability eliminates the need for isolation resistors in ADC driver applications and supports direct connection to sampling capacitors in SAR ADCs - a key advantage over many competing micropower op amps that require ≥100Ω series resistance for stability.
Does the LMV931MF-TI support true rail-to-rail input common-mode voltage at 1.8V supply?
Yes - the LMV931MF-TI guarantees input common-mode voltage range from V− −0.2V to V+ +0.2V at 1.8V supply, meaning it accepts signals 200mV below ground or 200mV above VCC. This is confirmed in the "1.8V DC Electrical Characteristics" table (CMVR parameter) and enables robust high-side current sensing in single-supply systems.
What is the typical output voltage swing of the LMV931MF-TI into a 600Ω load at 1.8V?
At 1.8V supply and 600Ω load, the LMV931MF-TI delivers typical output swing of 1.63V (high) and 0.105V (low), i.e., within 105mV of each rail. This value is explicitly specified in the "1.8V DC Electrical Characteristics" table under VO parameter and ensures full utilization of 1.8V ADC input ranges without clipping.
Can the LMV931MF-TI operate reliably at −40°C and +125°C?
Yes - the LMV931MF-TI is fully specified and tested across −40°C to +125°C ambient temperature. Its electrical characteristics (including VOS, IQ, and GBW) are guaranteed over this range per the "Operating Ratings" section, making it suitable for under-hood automotive and industrial control applications without derating.
Is the LMV931MF-TI pin-compatible with other SOT-23 op amps like the LMV321?
No - while both use 5-pin SOT-23 packages, the LMV931MF-TI has OUT on Pin 1, −IN on Pin 2, +IN on Pin 3, GND on Pin 4, and V+ on Pin 5. The LMV321 uses OUT on Pin 1, +IN on Pin 2, −IN on Pin 3, V+ on Pin 5, and GND on Pin 3 - differing pin assignments prevent drop-in replacement without PCB redesign.
LMV931MF-TI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Bulk
- Product Status:
- Active
- 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 (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
LMV931MF-TI FAQ
1.How can I place an order for LMV931MF-TI through Aetrix?
Please submit a Request for Quotation (RFQ) for LMV931MF-TI 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-TI reliable?
The price and inventory of LMV931MF-TI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV931MF-TI is usually 5 days.
3.What payment methods are accepted for LMV931MF-TI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV931MF-TI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMV931MF-TI?
LMV931MF-TI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMV931MF-TI 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-TI?
For technical support, including LMV931MF-TI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV931MF-TI requirements.
6.How does Aetrix verify that LMV931MF-TI is sourced from the original manufacturer or authorized distributors?
All LMV931MF-TI 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-TI meets industry standards.
7.What is the process for return or replacement of LMV931MF-TI?
All LMV931MF-TI units undergo pre-shipment inspection (PSI). If there is an issue with LMV931MF-TI, 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-TI part is unused and in its original packaging.
Return procedure for LMV931MF-TI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LMV931MF-TI 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…
