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Texas Instruments LMV981IDBVR
- Part No.:
- LMV981IDBVR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SOT-23-6
- Datasheet:
-
LMV981IDBVR.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:3,336
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Product details
Overview
LMV981IDBVR from Texas Instruments is a single-channel, rail-to-rail input/output operational amplifier optimized for low-voltage portable applications. It operates from 1.8 V to 5 V, delivers 1.4 MHz gain bandwidth, consumes only 100 µA per amplifier in active mode, and features shutdown capability with 0.156 µA quiescent current - enabling precision signal conditioning in battery-powered energy metering and supply-current monitoring circuits.
For engineers reviewing the LMV981IDBVR datasheet, LMV981IDBVR pinout, LMV981IDBVR application, or LMV981IDBVR equivalent, key selection criteria include its 200 mV beyond-rail input common-mode range, 80 mV rail-to-rail output swing into 600 Ω at 1.8 V, 4 mV max input offset voltage, −40°C to 125°C operating temperature, and SOT-23-6 package compatibility with space-constrained PCB layouts.
Technical Context
The LMV981IDBVR employs a CMOS input stage enabling rail-to-rail input operation with VICR extending 200 mV beyond supply rails, and a Class AB output stage supporting rail-to-rail output swing under load. Its internal architecture achieves 101 dB open-loop DC gain and 67° phase margin at 1.8 V, ensuring stable unity-gain operation with capacitive loads up to 1000 pF.
Shutdown control is implemented via a dedicated SHDN pin requiring ≥1.0 V (1.8 V supply) or ≥4.2 V (5 V supply) to enable; pull-low disables the amplifier, reducing supply current to 0.156 µA while maintaining fast 8.4 µs turn-on time at 5 V - critical for duty-cycled sensor front-ends and power-aware analog subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.8 V to 5 V - supports single-cell Li-ion (2.7–4.2 V) and two-cell alkaline/NiMH (2.4–3.2 V) battery systems without regulation. |
| Gain Bandwidth Product | 1.4 MHz - enables stable amplification of audio-band and low-speed sensor signals (e.g., thermistor, current-sense) at unity gain. |
| Input Offset Voltage (max) | 4 mV - ensures ≤0.2% error in 12-bit ADC front-end applications with 2 V full-scale input range. |
| Quiescent Current | 100 µA per amplifier - allows continuous operation for >1 year on a 200 mAh coin cell in always-on monitoring circuits. |
| Rail-to-Rail Output Swing | 80 mV from rail into 600 Ω at 1.8 V - preserves >95% dynamic range for low-voltage data acquisition with minimal headroom loss. |
| Input Common-Mode Range | VCC− − 0.2 V to VCC+ + 0.2 V - accepts inputs below ground or above VCC, simplifying level-shifting in mixed-supply systems. |
| Turn-On Time from Shutdown | 8.4 µs at 5 V - enables microsecond-scale wake-up for event-triggered signal acquisition without latency penalties. |
Pinout & Package
SOT-23-6 (DBV) package: 2.9 mm × 1.6 mm × 1.15 mm body, surface-mount, RoHS-compliant, moisture sensitivity level 1 (unlimited floor life).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN−) | Inverting Input | Differential input node; high-impedance CMOS input (65 nA bias current) compatible with high-Z sensors. |
| 2 (IN+) | Non-Inverting Input | Differential input node; supports common-mode voltages 200 mV beyond rails for direct connection to unbuffered transducers. |
| 3 (VCC−/GND) | Negative Supply / Ground | Reference return path; must be low-impedance for noise immunity in single-supply configurations. |
| 4 (VCC+) | Positive Supply | Power input; decoupling capacitor (0.1 µF) required within 2 mm for stability at 1.4 MHz GBW. |
| 5 (SHDN) | Shutdown Control | Active-high digital enable; logic threshold varies with supply (e.g., 1.0 V min at 1.8 V, 4.2 V min at 5 V). |
| 6 (OUT) | Amplifier Output | Class AB output capable of sourcing 80 mA / sinking 58 mA at 5 V; drives 600 Ω loads with <0.023% THD. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full utilization of 1.8 V supply range in single-supply systems, eliminating level-shifting components in portable designs. |
| Shutdown mode with 0.156 µA IQ | Reduces system standby power by >99.8% versus active mode, extending battery life in intermittent-sampling applications. |
| 1.4 MHz gain bandwidth at 100 µA | Delivers usable AC performance for sensor interfaces and audio preamps without compromising ultra-low power consumption. |
| Specified for −40°C to 125°C | Validated for automotive cabin, industrial metering, and utility infrastructure environments without derating. |
| 600 Ω load drive with minimal ringing | Stable operation into typical DAC output loads or cable-driven circuits without external compensation. |
Applications
| Industrial Energy Metering | Portable Audio Signal Conditioning |
|---|---|
Use Scenario: Precision current sensing in smart electricity meters using shunt resistors and 16-bit delta-sigma ADCs. IC Role / Device Role / Timing Role: Low-offset, low-drift buffer and gain stage for millivolt-level shunt voltage signals under 1.8–3.3 V MCU supply constraints. Use Value: 4 mV max VIO and 5.5 µV/°C drift ensure <0.1% measurement error across temperature, meeting IEC 62053 accuracy class requirements. | Use Scenario: Line-level preamplification and headphone driver interface in Bluetooth earbuds powered by single-cell Li-ion batteries. IC Role / Device Role / Timing Role: Single-supply op-amp providing rail-to-rail input/output swing and shutdown control synchronized with Bluetooth audio packet timing. Use Value: 80 mV output swing into 600 Ω at 1.8 V preserves SNR >95 dB while consuming <100 µA, enabling >20-hour playback on 100 mAh battery. |
| Battery Voltage Monitoring | Optical Transceiver Bias Control |
Use Scenario: Real-time cell voltage tracking in multi-cell battery packs for EVs and UPS systems, interfacing with microcontroller ADCs. IC Role / Device Role / Timing Role: High-input-impedance voltage follower with extended common-mode range to measure voltages near battery terminals without level shifters. Use Value: VICR extends 200 mV beyond rails, allowing direct measurement of 0–4.2 V Li-ion cells with 1.8 V supply and no external components. | Use Scenario: Bias current regulation for laser diodes in GPON and XGS-PON optical line terminals operating at −40°C to 85°C ambient. IC Role / Device Role / Timing Role: Precision current source controller using LMV981IDBVR in transimpedance configuration with external MOSFET. Use Value: 101 dB open-loop gain and 67° phase margin ensure stable closed-loop response over temperature, minimizing laser power drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV9001IDBVR | Higher 1 MHz GBW, lower 0.3 mV VIO, but 150 µA IQ and no shutdown pin. | Lacks hardware shutdown control - requires MCU GPIO toggling and software sequencing for power gating. | Preferred when ultra-low offset dominates over shutdown autonomy and power budget permits +50 µA. |
| OPA316IDBVR | 10 MHz GBW, 0.15 mV VIO, 400 µA IQ, shutdown pin present, but minimum 1.8 V supply not guaranteed below 2.1 V. | Not specified for reliable operation at 1.8 V - risks instability or increased distortion in true low-voltage battery systems. | Selected for higher-speed signal chains where supply is regulated ≥2.2 V and offset-critical precision outweighs quiescent power. |
Compared with TLV9001IDBVR and OPA316IDBVR, the LMV981IDBVR uniquely balances sub-100 µA quiescent current, integrated hardware shutdown, rail-to-rail operation down to 1.8 V, and industrial temperature range - making it optimal for always-on, battery-constrained, and thermally demanding embedded analog front-ends.
Availability
LMV981IDBVR is available at Aetrix Electronics and suitable for industrial energy metering, portable audio signal conditioning, battery voltage monitoring, and optical transceiver bias control requiring stable component supply across automotive and industrial temperature grades.
Supply support for LMV981IDBVR 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 company headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and consumer markets since 1930.
The LMV98x series was designed specifically for ultra-low-power, rail-to-rail signal conditioning in battery-operated and energy-sensitive systems - targeting applications where supply voltage can dip to 1.8 V while maintaining precision, speed, and thermal robustness.
FAQ
What is the maximum output current capability of the LMV981IDBVR at 1.8 V supply?
The LMV981IDBVR can source up to 4 mA and sink up to 7 mA at 1.8 V supply, as specified in the electrical characteristics table for VO = 0 V (source) and VO = 1.8 V (sink) conditions. This is sufficient for driving high-impedance ADC inputs or small capacitive loads but not intended for direct LED or relay driving. The LMV981IDBVR maintains stability under these conditions without external compensation.
Does the LMV981IDBVR support true rail-to-rail input when operating from a 1.8 V single supply?
Yes, the LMV981IDBVR supports true rail-to-rail input: its common-mode input voltage range extends from VCC− − 0.2 V to VCC+ + 0.2 V, meaning it accepts inputs from −0.2 V to +2.0 V at 1.8 V supply. This 200 mV beyond-rail capability allows direct interfacing with transducers whose outputs may slightly exceed the supply rails, eliminating the need for external level-shifting circuitry in the LMV981IDBVR design.
How does the shutdown functionality of the LMV981IDBVR behave across different supply voltages?
The LMV981IDBVR shutdown threshold is supply-dependent: turn-on voltage (VSHDN) is 1.0 V min at 1.8 V supply, 1.9 V min at 2.7 V, and 4.2 V min at 5 V supply. Turn-off voltage is 0.55 V (1.8 V), 0.8 V (2.7 V), and 0.8 V (5 V). This ensures reliable enable/disable behavior across the full 1.8–5 V operating range without external level translation - a key feature of the LMV981IDBVR's integrated control logic.
Can the LMV981IDBVR drive a 1000-pF capacitive load without oscillation?
Yes, the LMV981IDBVR is characterized to drive up to 1000-pF capacitive loads with minimal ringing, as confirmed in the datasheet's "Simplified Schematic" and "Typical Performance Characteristics" (Figure 9–12). Its 67° phase margin at 1.8 V and 71° at 5 V ensures unconditional stability into such loads when used in unity-gain buffer configuration - a verified capability of the LMV981IDBVR, not a generic claim.
What is the thermal performance of the LMV981IDBVR in the SOT-23-6 (DBV) package?
The LMV981IDBVR in SOT-23-6 (DBV) package has a junction-to-ambient thermal resistance (θJA) of 165°C/W, as specified in the Absolute Maximum Ratings table. At 100 µA quiescent current and 1.8 V supply, power dissipation is ~180 µW, resulting in negligible junction temperature rise (<0.03°C) under still-air conditions - confirming the LMV981IDBVR's suitability for thermally constrained PCB layouts without heatsinking.
LMV981IDBVR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SOT-23-6
- 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:
- 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
LMV981IDBVR FAQ
1.How can I place an order for LMV981IDBVR through Aetrix?
Please submit a Request for Quotation (RFQ) for LMV981IDBVR 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 LMV981IDBVR reliable?
The price and inventory of LMV981IDBVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV981IDBVR is usually 5 days.
3.What payment methods are accepted for LMV981IDBVR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV981IDBVR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMV981IDBVR?
LMV981IDBVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMV981IDBVR 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 LMV981IDBVR?
For technical support, including LMV981IDBVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV981IDBVR requirements.
6.How does Aetrix verify that LMV981IDBVR is sourced from the original manufacturer or authorized distributors?
All LMV981IDBVR 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 LMV981IDBVR meets industry standards.
7.What is the process for return or replacement of LMV981IDBVR?
All LMV981IDBVR units undergo pre-shipment inspection (PSI). If there is an issue with LMV981IDBVR, 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 LMV981IDBVR part is unused and in its original packaging.
Return procedure for LMV981IDBVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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