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Texas Instruments LMV981TLX/NOPB
- Part No.:
- LMV981TLX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 6-WFBGA, DSBGA
- Datasheet:
-
LMV981TLX/NOPB.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 6DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:6,784
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Product details
Overview
LMV981TLX/NOPB from Texas Instruments is a single-channel, rail-to-rail input/output operational amplifier optimized for 1.8-V to 5-V 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 wearables and portable audio.
For engineers reviewing the LMV981TLX/NOPB datasheet, LMV981TLX/NOPB pinout, LMV981TLX/NOPB application, or LMV981TLX/NOPB equivalent, key selection criteria include ultra-low quiescent current, shutdown functionality with 19-µs turnon time, rail-to-rail operation beyond supplies (±200 mV), and DSBGA-6 package compatibility with space-constrained PCB layouts.
Technical Context
The LMV981TLX/NOPB implements a CMOS input stage supporting rail-to-rail common-mode input range extending 200 mV beyond V− and V+, and an output stage capable of driving 600-Ω loads while maintaining stability with up to 1000-pF capacitive loads. Its architecture achieves 101-dB DC open-loop gain and 0.35-V/µs slew rate at 1.8 V.
Shutdown control is active-low: pulling SHDN below 0.55 V (1.8 V supply) disables the amplifier, reducing supply current to ≤1 µA and placing the output in high-impedance state. The device operates across −40°C to +125°C and is specified for 1.8-V, 2.7-V, and 5-V supplies with guaranteed performance at all three voltages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.8 V to 5 V - supports single-cell Li-ion (3.0–3.7 V), two-cell alkaline (2.4–3.2 V), and 3.3-V/5-V logic domains without level shifting. |
| Quiescent Current | 100 µA per channel at 1.8 V - enables >1-year battery life in always-on sensor front-ends powered by CR2032 coin cells. |
| Gain Bandwidth Product | 1.4 MHz - sufficient for anti-aliasing filters, microphone preamps, and supply monitoring loops up to ~100 kHz. |
| Input Offset Voltage | Max 4 mV at 25°C - ensures ≤0.2% error in 12-bit ADC reference buffers or current-sense amplifiers with 100-mV full-scale signals. |
| Rail-to-Rail Output Swing | Within 80 mV of rails into 600 Ω at 1.8 V - preserves dynamic range in low-voltage audio DAC output stages and battery voltage monitors. |
| Shutdown Current | ≤1 µA - reduces system standby power by >99% versus active mode, critical for intermittent-sensing IoT nodes. |
| Turnon Time from Shutdown | 19 µs at 1.8 V - fast enough for burst-mode sensing (e.g., motion-triggered wake-up) without missing initial signal transients. |
Pinout & Package
LMV981TLX/NOPB is packaged in a 1.006 mm × 1.514 mm, 0.945-mm height DSBGA-6 (YZR) package - optimized for ultra-thin portable devices. The bottom-side ball layout supports automated optical inspection and high-density routing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| +IN (C1) | Noninverting input | Accepts signals from V− − 0.2 V to V+ + 0.2 V - enables direct sensing of battery voltage or thermistor dividers without external biasing. |
| −IN (C2) | Inverting input | Used for closed-loop configurations (e.g., inverting amplifier, transimpedance); matched input bias current minimizes offset drift. |
| OUT (A2) | Amplifier output | Drives 600-Ω loads to within 80 mV of rails; stable with 1000-pF capacitive loads - eliminates need for external isolation resistors in LCD bias or LED drive. |
| SHDN (B1) | Active-low shutdown control | Pull ≤0.55 V to disable; output goes high-Z - allows shared shutdown bus across multiple sensors in modular wearables. |
| V+ (A1) | Positive supply | Connects to main system rail (1.8–5 V); internal ESD protection rated ±2000 V HBM ensures robustness during board handling. |
| V− (B2) | Negative supply / ground | Supports single-supply (0 V) or split-supply (e.g., ±0.9 V) operation; common-mode range extends 200 mV below this node. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input beyond supplies | ±200 mV common-mode range enables direct measurement of signals outside supply rails - e.g., battery voltage above V+ in fuel-gauge circuits. |
| Ultra-low shutdown current | ≤1 µA at 25°C - reduces average system power in duty-cycled applications such as step-counting accelerometers. |
| Guaranteed 1.8-V operation | Full AC/DC specs validated at 1.8 V - eliminates design margin uncertainty when scaling down from 3.3-V legacy systems. |
| High DC open-loop gain | 101 dB - ensures <0.001% gain error in precision instrumentation amplifiers and closed-loop current sources. |
| Capacitive load drive capability | Stable with up to 1000-pF loads - supports direct connection to long traces, LCD segments, or piezoelectric transducers without phase compensation. |
Applications
| Battery Voltage Monitoring | Wearable Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Real-time tracking of Li-ion cell voltage during charge/discharge cycles in smartwatches. IC Role / Device Role / Timing Role: Precision buffer and level-shifter for ADC input, operating from same 3.3-V rail as microcontroller. Use Value: Rail-to-rail input accepts 0–4.2 V range; 4-mV VOS ensures ≤0.1% full-scale error in 12-bit voltage readings. |
Use Scenario: Amplifying low-amplitude bio-potential signals (ECG, EMG) in fitness bands. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier with adjustable gain, powered from coin-cell-derived 1.8-V supply. Use Value: 100-µA quiescent current extends battery life; 1.4-MHz GBW supports filtering up to 100 kHz without phase lag. |
| Portable Audio Line Driver | Supply Current Sensing |
|
Use Scenario: Driving stereo headphone outputs in Bluetooth earbuds with dual 1.2-V LDO supplies. IC Role / Device Role / Timing Role: Low-noise, rail-to-rail output stage delivering 0–1.2 V signals into 16-Ω loads. Use Value: 80-mV rail proximity at 1.8 V preserves >93% of available dynamic range; THD = 0.023% avoids audible distortion. |
Use Scenario: Measuring system-level current draw in handheld medical devices using shunt resistor feedback. IC Role / Device Role / Timing Role: High-side current-sense amplifier with shutdown triggered during sleep mode. Use Value: Shutdown reduces leakage to ≤1 µA; rail-to-rail input accommodates shunt voltage from 0 to 100 mV regardless of supply. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP6001T-E/OT | No shutdown pin; 100-µA IQ; 1-MHz GBW; SOT-23-5 package. | Lacks independent shutdown - unsuitable for burst-mode sensing where power gating is required. | Choose when board space permits larger SOT-23 and shutdown is managed externally via supply switching. |
| TSV911ILT | Includes shutdown; 160-µA IQ; 8-MHz GBW; SC70-6 package; higher VOS (1.5 mV typ). | Higher bandwidth and supply current - better for active filters but less optimal for multi-year battery life. | Prefer when faster settling (<1 µs) is needed for multiplexed sensor arrays, accepting 60% higher active current. |
Compared with MCP6001T-E/OT and TSV911ILT, LMV981TLX/NOPB uniquely balances ultra-low shutdown current (≤1 µA), guaranteed 1.8-V operation, and DSBGA-6 footprint - making it the only option meeting simultaneous requirements for miniaturized, multi-year battery-powered wearables with programmable power states.
Availability
LMV981TLX/NOPB is available at Aetrix Electronics and suitable for battery monitoring, wearable sensor interfaces, and portable audio line drivers requiring stable component supply across industrial temperature ranges and long production lifecycles.
Supply support for LMV981TLX/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 low-power signal chain solutions.
LMV981TLX/NOPB belongs to TI's LMV98x-N family of small, low-power RRIO op-amps designed specifically for energy-constrained portable electronics - emphasizing rail-to-rail operation at 1.8 V, sub-100-µA quiescent current, and ultra-small packaging.
FAQ
What is the maximum operating temperature for LMV981TLX/NOPB?
The LMV981TLX/NOPB is fully specified from −40°C to +125°C ambient temperature. Its thermal resistance (RθJA) is 138.2°C/W in the YZR DSBGA package, enabling reliable operation in sealed wearable enclosures or automotive cabin modules without forced cooling.
Does LMV981TLX/NOPB support true single-supply operation?
Yes, LMV981TLX/NOPB supports true single-supply operation down to 1.8 V. Its input common-mode range extends 200 mV below V− (ground), and its output swings to within 80 mV of V− and V+ - allowing direct interfacing with unipolar sensors and ADCs without level-shifting circuitry.
What is the typical input bias current of LMV981TLX/NOPB?
The typical input bias current of LMV981TLX/NOPB is 15 nA at 25°C and remains ≤50 nA across −40°C to +125°C. This low bias current minimizes voltage errors in high-impedance sensor interfaces such as pH electrodes or photodiode transimpedance amplifiers.
Can LMV981TLX/NOPB drive a 1000-pF capacitive load stably?
Yes, LMV981TLX/NOPB is characterized for stable operation with up to 1000-pF capacitive loads without external compensation. This capability simplifies designs involving long PCB traces, LCD bias networks, or piezoelectric actuator drivers where phase margin degradation is a concern.
Is LMV981TLX/NOPB pin-compatible with other packages in the LMV98x-N family?
No, LMV981TLX/NOPB in DSBGA-6 (YZR) is not pin-compatible with SC70-6 (DCK) or SOT-23-6 (DBV) variants of LMV981-N. Pin functions are identical, but physical ball/pad locations differ - requiring separate PCB footprints for each package option.
LMV981TLX/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 6-WFBGA, DSBGA
- 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:
- 6-DSBGA (1.5x1.3)
LMV981TLX/NOPB FAQ
1.How can I place an order for LMV981TLX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMV981TLX/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 LMV981TLX/NOPB reliable?
The price and inventory of LMV981TLX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV981TLX/NOPB is usually 5 days.
3.What payment methods are accepted for LMV981TLX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV981TLX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMV981TLX/NOPB?
LMV981TLX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMV981TLX/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 LMV981TLX/NOPB?
For technical support, including LMV981TLX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV981TLX/NOPB requirements.
6.How does Aetrix verify that LMV981TLX/NOPB is sourced from the original manufacturer or authorized distributors?
All LMV981TLX/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 LMV981TLX/NOPB meets industry standards.
7.What is the process for return or replacement of LMV981TLX/NOPB?
All LMV981TLX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMV981TLX/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 LMV981TLX/NOPB part is unused and in its original packaging.
Return procedure for LMV981TLX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LMV981TLX/NOPB Tags
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