My Inquiry
My Account
Texas Instruments LMV981MF/NOPB
- Part No.:
- LMV981MF/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SOT-23-6
- Datasheet:
-
LMV981MF/NOPB.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:3,740
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LMV981MF/NOPB from Texas Instruments is a single-channel, rail-to-rail input/output operational amplifier optimized for 1.8-V operation in battery-powered systems. It delivers 1.4-MHz gain bandwidth, 100-µA supply current per channel, 4-mV max input offset voltage, and output swing within 80 mV of rails under 600-Ω load - enabling precision signal conditioning in wearable health monitors and portable audio front-ends.
For engineers reviewing the LMV981MF/NOPB datasheet, LMV981MF/NOPB pinout, LMV981MF/NOPB application, or LMV981MF/NOPB equivalent, key selection criteria include ultra-low quiescent current at 1.8 V, shutdown functionality with 19-µs wake-up time, rail-to-rail input beyond supplies (±200 mV), and compatibility with space-constrained PCB layouts using DSBGA or SC70 packages.
Technical Context
The LMV981MF/NOPB implements a CMOS input stage with rail-to-rail input common-mode range extending 200 mV beyond both supply rails, supporting true single-supply operation down to 1.8 V. Its output stage drives 600-Ω loads while maintaining stability with up to 1000-pF capacitive loads - critical for sensor interface and DAC buffer applications where low power and robust drive capability coexist.
Shutdown control is implemented via a dedicated SHDN pin that places the output in high-impedance state and reduces supply current to ≤1 µA. The device operates across −40°C to +125°C, with guaranteed DC performance including 101-dB open-loop gain and 78-dB CMRR over temperature - ensuring reliability in automotive body electronics and industrial sensor nodes.
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 (3.0–4.2 V) or two-cell alkaline (2.4–3.2 V) without regulation. |
| Supply Current (per channel) | 103 µA typical at 1.8 V - enables >1-year battery life in always-on fitness tracker sensor amplifiers. |
| Gain Bandwidth Product | 1.4 MHz at 1.8 V - sufficient for ECG front-end filtering and audio pre-amplification up to 20 kHz. |
| Input Offset Voltage (max) | 4 mV at 25°C - ensures <0.2% error in 12-bit ADC interfaces with 2-V full-scale range. |
| Output Swing (600 Ω load) | Within 80 mV of rails at 1.8 V - preserves dynamic range in low-voltage analog signal chains. |
| Turnon Time from Shutdown | 19 µs - fast enough for duty-cycled battery monitoring circuits with microsecond-level sampling windows. |
| Input Common-Mode Range | V− − 0.2 V to V+ + 0.2 V - allows direct sensing of signals below ground or above supply in single-supply systems. |
Pinout & Package
LMV981MF/NOPB is available in SC70-6 (DCK) package: 2.00 mm × 1.25 mm, 0.65-mm pitch, 6-pin surface-mount. Pinout is identical across SC70 and SOT-23 variants per TI datasheet SNOS976M.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| +IN | Noninverting input | High-impedance node (15 nA bias current) for precision sensor voltage referencing or DAC output buffering. |
| −IN | Inverting input | Accepts feedback network for configurable gain; supports unity-gain stable operation with capacitive loads. |
| OUT | Amplifier output | Rail-to-rail capable output driving 600-Ω loads; high-impedance during shutdown. |
| SHDN | Shutdown enable input | Active-low logic input; pulls output to Hi-Z and reduces supply current to ≤1 µA when low. |
| V+ | Positive supply | Connects to main system rail (1.8–5 V); no external decoupling required beyond standard 0.1-µF ceramic. |
| V− | Negative supply / ground | Reference node for single-supply operation; must be stable and low-impedance for noise-sensitive applications. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail I/O with extended input range | Input common-mode extends 200 mV beyond supplies - enables direct interfacing to transducers operating outside supply bounds. |
| Ultra-low quiescent current | 103 µA at 1.8 V - minimizes battery drain in always-on wearable biosensors and environmental monitors. |
| Dedicated shutdown control | 19-µs wake-up time and <1-µA shutdown current - supports adaptive power cycling in energy-harvesting systems. |
| Capacitive load drive capability | Stable with up to 1000-pF load - eliminates need for isolation resistors when driving ADC inputs or long PCB traces. |
| Wide temperature operation | Specified from −40°C to +125°C - qualified for under-hood automotive and industrial control module deployment. |
Applications
| Battery Voltage Monitoring | Wearable ECG Front-End |
|---|---|
|
Use Scenario: Real-time measurement of Li-ion cell voltage during charge/discharge cycles in smart bands. IC Role / Device Role / Timing Role: Precision buffer and level-shifter between battery sense point and 12-bit SAR ADC. Use Value: 4-mV max VOS and rail-to-rail output ensure <0.1% full-scale error across 2.5–4.2 V range without calibration. |
Use Scenario: Amplifying microvolt-level biopotential signals from dry electrodes in compact fitness trackers. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier gain block with DC-coupled input. Use Value: 200-mV beyond-rail input range accepts electrode offsets up to ±200 mV; 1.4-MHz GBW supports 100-Hz anti-alias filtering. |
| Portable Audio Line Driver | Industrial Sensor Signal Conditioning |
|
Use Scenario: Driving stereo headphone outputs from low-power codec in Bluetooth earbuds. IC Role / Device Role / Timing Role: Low-noise, rail-to-rail output buffer with shutdown during standby mode. Use Value: 60-nV/√Hz input noise and 80-mV rail proximity preserve SNR >95 dB; 19-µs wake-up enables seamless audio resume. |
Use Scenario: Conditioning 4–20 mA loop sensor outputs in battery-powered IoT node enclosures. IC Role / Device Role / Timing Role: Transimpedance amplifier and level translator for current-loop receiver circuit. Use Value: 101-dB open-loop gain ensures <0.01% linearity error; 1.8-V operation eliminates need for LDO in 2-cell AA designs. |
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 | No shutdown pin; 100-µA IQ; 1-MHz GBW; same SC70-6 footprint. | Lacks active power management - unsuitable for duty-cycled battery monitoring. | Select when shutdown is unnecessary and cost sensitivity outweighs feature set. |
| TLV9001IDBVR | Lower VOS (1.6 mV typ); 200-µA IQ; 1-MHz GBW; includes shutdown; SC70-6 compatible. | Higher supply current reduces battery life in multi-year wearables but improves DC accuracy. | Select when offset-critical sensor front-ends dominate over ultra-low-power requirements. |
Compared with MCP6001T-E/OT, LMV981MF/NOPB adds shutdown control and higher GBW at identical quiescent current; compared with TLV9001IDBVR, it trades 2.4-mV higher VOS for 100-µA lower IQ - making LMV981MF/NOPB optimal for long-life, moderate-accuracy portable systems.
Availability
LMV981MF/NOPB is available at Aetrix Electronics and suitable for battery monitoring, wearable biosensing, and portable audio applications requiring stable component supply, long-lifecycle support, and consistent parametric performance across production batches.
Supply support for LMV981MF/NOPB 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 LMV98x-N series was designed specifically for ultra-low-voltage, space-constrained portable electronics - targeting applications where 1.8-V operation, rail-to-rail performance, and sub-100-µA quiescent current are mandatory design constraints.
FAQ
What is the maximum supply voltage rating for LMV981MF/NOPB?
The absolute maximum supply voltage (V+ – V−) for LMV981MF/NOPB is 5.5 V per TI datasheet SNOS976M. Operation beyond this risks permanent damage. Recommended operating range is 1.8 V to 5 V, with guaranteed specifications across that span - making LMV981MF/NOPB safe for use with fully charged 5-V USB-powered systems or regulated 3.3-V rails.
Does LMV981MF/NOPB support true rail-to-rail input with signals below ground?
Yes. LMV981MF/NOPB features an input common-mode voltage range extending to V− − 0.2 V, enabling valid operation with inputs 200 mV below the negative supply rail. This is confirmed in Section 7.5 of the datasheet under CMVR specification. In single-supply configurations where V− = GND, this allows sensing of small negative transducer offsets without level-shifting circuitry - a key advantage in biopotential and bridge sensor applications.
What is the typical output drive capability of LMV981MF/NOPB at 1.8 V?
At 1.8 V supply and 25°C, LMV981MF/NOPB delivers a minimum output swing of 1.65 V (positive) and 0.077 V (negative) into a 600-Ω load - i.e., within 150 mV of each rail. Short-circuit output current is specified at 4–8 mA sourcing and 7–9 mA sinking. These values are measured per Section 7.5 of SNOS976M and confirm suitability for driving ADC reference buffers and low-power audio paths without external gain stages.
How does the shutdown function behave on LMV981MF/NOPB?
LMV981MF/NOPB enters shutdown when the SHDN pin is driven low (<0.55 V at 1.8 V supply). In this state, supply current drops to ≤1 µA and the output becomes high-impedance. Wake-up occurs within 19 µs after SHDN rises above 1 V (at 1.8 V). This behavior is characterized in Sections 7.5 and 7.7 of SNOS976M and enables precise power gating in firmware-controlled sensor acquisition sequences.
Which package variants are available for LMV981MF/NOPB?
LMV981MF/NOPB is orderable in three package types: SC70-6 (DCK), SOT-23-6 (DBV), and 6-pin DSBGA (YZR). The "MF" suffix in LMV981MF/NOPB specifically denotes the SC70-6 package per TI's packaging nomenclature. All variants share identical electrical specifications and pinout, differing only in footprint size and thermal resistance - with SC70 offering the best balance of miniaturization and manufacturability for high-volume portable designs.
LMV981MF/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- 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 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
LMV981MF/NOPB FAQ
1.How can I place an order for LMV981MF/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMV981MF/NOPB 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 LMV981MF/NOPB reliable?
The price and inventory of LMV981MF/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV981MF/NOPB is usually 5 days.
3.What payment methods are accepted for LMV981MF/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV981MF/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMV981MF/NOPB?
LMV981MF/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMV981MF/NOPB 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 LMV981MF/NOPB?
For technical support, including LMV981MF/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV981MF/NOPB requirements.
6.How does Aetrix verify that LMV981MF/NOPB is sourced from the original manufacturer or authorized distributors?
All LMV981MF/NOPB 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 LMV981MF/NOPB meets industry standards.
7.What is the process for return or replacement of LMV981MF/NOPB?
All LMV981MF/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMV981MF/NOPB, 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 LMV981MF/NOPB part is unused and in its original packaging.
Return procedure for LMV981MF/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LMV981MF/NOPB 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…
