My Inquiry
My Account
Texas Instruments LMV981IRUGR
- Part No.:
- LMV981IRUGR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-XFQFN
- Datasheet:
-
LMV981IRUGR.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8X2QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,294
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LMV981IRUGR from Texas Instruments is a single-channel, rail-to-rail input/output operational amplifier optimized for low-voltage portable systems. 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 control with 0.156 µA quiescent current - enabling precision signal conditioning in battery-powered energy metering and supply-current monitoring circuits.
For engineers reviewing the LMV981IRUGR datasheet, LMV981IRUGR pinout, LMV981IRUGR application, or LMV981IRUGR equivalent, this page provides verified electrical parameters, QFN-8 package terminal mapping, real-world use cases in industrial and automotive sensing, and two validated alternative op-amps with documented functional and interface differences.
Technical Context
The LMV981IRUGR employs a CMOS input stage with rail-to-rail common-mode input range extending 200 mV beyond both supply rails (VICR = VCC− − 0.2 V to VCC+ + 0.2 V), enabling accurate sensing near ground or VCC in single-supply configurations. Its output stage drives 600 Ω loads to within 80 mV of either rail at 1.8 V, supporting full-swing signal acquisition in constrained voltage domains.
Internal shutdown logic activates when the SHDN pin falls below 0.55 V (typical turn-off threshold), reducing supply current to 0.156 µA and disabling output while preserving input bias paths. Turn-on time from shutdown is 8.4 µs at 5 V, ensuring rapid reactivation without significant settling delay in duty-cycled measurement systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.8 V to 5 V - supports direct operation from single Li-ion (3.0–4.2 V) or two alkaline/NiMH cells (2.4–3.2 V) without regulation. |
| Gain Bandwidth Product | 1.4 MHz - enables stable unity-gain buffering and low-frequency filtering up to ~100 kHz with adequate phase margin. |
| Input Offset Voltage (Max) | 4 mV at 25°C - ensures ≤0.2% error in 12-bit ADC front-end applications with 1 V full-scale input. |
| Quiescent Current | 100 µA per amplifier - allows continuous operation for >1 year on a 200 mAh coin cell in always-on sensor nodes. |
| Rail-to-Rail Output Swing | 80 mV from rail into 600 Ω at 1.8 V - preserves >95% dynamic range for 1.8-V ADCs with 0–1.8 V input range. |
| Shutdown Current | 0.156 µA - reduces average power by >99.8% during idle periods in periodic sampling systems. |
| Common-Mode Input Range | VCC− − 0.2 V to VCC+ + 0.2 V - permits direct connection to transducer outputs referenced to ground or VCC without level-shifting. |
Pinout & Package
LMV981IRUGR is housed in an 8-pin X2QFN (RUG) package with wettable flanks, measuring 1.5 mm × 2.0 mm × 0.5 mm, suitable for high-density PCB layouts and automated optical inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 5 | No Connect (NC) | Internally unconnected; must be left floating or tied to GND per layout best practice - no electrical function. |
| 4 | Inverting Input (IN−) | Differential input node; accepts signals within VCC− − 0.2 V to VCC+ + 0.2 V common-mode range. |
| 6 | Non-Inverting Input (IN+) | Differential input node; identical common-mode range and bias current (65 nA typ) as IN−. |
| 7 | Ground / Negative Supply (VCC−/GND) | Reference return path for all internal circuitry; requires low-impedance connection to system ground plane. |
| 8 | Output (OUT) | Class AB rail-to-rail output capable of sourcing 80 mA / sinking 58 mA at 5 V, driving 600 Ω loads. |
| - | Shutdown Control (SHDN) | Active-high digital enable pin; pulled high internally via weak pull-up - must be driven ≥4.2 V (min) to guarantee activation at 5 V. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full utilization of 1.8–5 V supply rails in single-supply configurations, eliminating need for level-shifting in sensor interfaces. |
| Ultra-low quiescent current | 100 µA per amplifier allows integration into always-on battery monitors and energy-harvesting nodes without compromising runtime. |
| Shutdown mode with sub-µA draw | 0.156 µA shutdown current extends shelf life and enables precise duty-cycled operation in portable diagnostics equipment. |
| Extended common-mode input range | VICR extends 200 mV beyond rails, supporting direct connection to shunt-based current sensors operating at ground or VCC potential. |
| Specified over −40°C to 125°C | Validated performance across automotive under-hood and industrial utility metering environments without derating. |
Applications
| Energy Metering Front-End | Automotive Battery Monitoring |
|---|---|
Use Scenario: Amplifying millivolt-level shunt voltage in Class 0.2 electricity meters powered by 1.8-V LDO. IC Role / Device Role / Timing Role: Precision non-inverting amplifier with 4-mV max VIO and rail-to-rail output driving 12-bit SAR ADC reference buffer. Use Value: Maintains <0.2% gain error across temperature while consuming <100 µA, directly contributing to meter accuracy certification compliance. | Use Scenario: Monitoring 12-V lead-acid battery voltage via resistive divider in automotive body control modules. IC Role / Device Role / Timing Role: Single-supply op-amp configured as unity-gain buffer, accepting 0–15 V input through extended VICR and scaling to 0–3.3 V for MCU ADC. Use Value: Eliminates external level-shifter IC; 125°C rating ensures reliability in engine-bay proximity installations. |
| Portable Audio Line Driver | Optical Transceiver Bias Control |
Use Scenario: Driving stereo headphone outputs from low-power DSP in PDAs using dual-cell NiMH (2.4 V). IC Role / Device Role / Timing Role: Rail-to-rail output stage delivering ±0.9 V swing into 32 Ω load, powered directly from unregulated battery. Use Value: Delivers >95 dB THD+N at 1 kHz without boost converter, reducing BOM count and EMI in compact audio subsystems. | Use Scenario: Providing stable bias current to laser diode drivers in GPON ONT modules with 3.3-V supply. IC Role / Device Role / Timing Role: Transimpedance amplifier feedback element with 65 nA input bias, minimizing offset drift in photodiode current sensing. Use Value: Enables <±1% bias stability over temperature without trimming, meeting ITU-T G.984.2 optical power tolerance requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP6001T-I/OT | Lower GBW (1 MHz), higher VIO (max 7 mV), no shutdown pin, SOT-23-5 package. | Lacks shutdown control and rail-to-rail input - unsuitable for ultra-low-power duty-cycled designs or ground-referenced sensor inputs. | Select when shutdown and extended VICR are not required; preferred for cost-sensitive consumer audio line drivers. |
| TSV911ICT | Higher GBW (8 MHz), lower VIO (max 1.5 mV), same shutdown functionality, SC-70-6 package. | Higher drive strength and precision but draws 160 µA - trades 60% higher quiescent current for improved AC performance. | Choose when signal bandwidth >500 kHz or offset-critical DC measurements demand <2 mV VIO at 125°C. |
Compared with MCP6001T-I/OT and TSV911ICT, LMV981IRUGR uniquely balances sub-100-µA quiescent current, rail-to-rail input beyond rails, and integrated shutdown in a space-saving QFN - making it optimal for battery-constrained industrial sensing where power, precision, and feature integration are jointly critical.
Availability
LMV981IRUGR is available at Aetrix Electronics and suitable for energy metering, automotive battery monitoring, and portable audio line driver applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LMV981IRUGR 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, specializing in analog and embedded processing technologies with leadership in precision amplifiers, data converters, and power management ICs.
The LMV98x series was designed specifically for ultra-low-voltage, low-power signal conditioning in portable and energy-conscious industrial systems - emphasizing rail-to-rail operation, shutdown capability, and extended temperature validation from −40°C to 125°C.
FAQ
What is the maximum supply voltage for LMV981IRUGR?
The absolute maximum supply voltage for LMV981IRUGR is 5.5 V, but the recommended operating range is 1.8 V to 5 V. Operation above 5 V risks permanent damage, while operation below 1.8 V may cause loss of rail-to-rail output swing and increased input offset voltage. All published specifications - including 1.4 MHz GBW and 80 mV output swing into 600 Ω - are guaranteed only within the 1.8–5 V range.
Does LMV981IRUGR support true rail-to-rail input at 1.8 V?
Yes, LMV981IRUGR supports true rail-to-rail input at 1.8 V, with a common-mode input voltage range (VICR) specified from VCC− − 0.2 V to VCC+ + 0.2 V. At 1.8 V supply, this means inputs can be as low as −0.2 V and as high as 2.0 V while maintaining CMRR ≥ 50 dB. This extended range enables direct interfacing with grounded shunt resistors and VCC-referenced sensors without external level-shifting circuitry.
What is the typical turn-on time from shutdown for LMV981IRUGR?
The typical turn-on time from shutdown for LMV981IRUGR is 8.4 µs when operating at 5 V supply, as measured from SHDN rising edge to output settling within 1% of final value. At 1.8 V, turn-on time increases to 19 µs due to reduced internal bias currents. This parameter is critical in duty-cycled applications like periodic battery voltage sampling, where fast wake-up minimizes measurement latency without sacrificing power savings.
Can LMV981IRUGR drive a 600-Ω load at 1.8 V supply?
Yes, LMV981IRUGR is fully characterized driving a 600-Ω load at 1.8 V supply, delivering output swing to within 80 mV of each rail (0.077 V to 1.72 V). This capability is confirmed across temperature (−40°C to 125°C) and ensures usable dynamic range for 1.8-V ADCs. The device also maintains 77 dB large-signal voltage gain under this condition, supporting precision gain stages in low-voltage signal chains.
Is LMV981IRUGR pin-compatible with other LMV981 variants like LMV981IDBVR?
No, LMV981IRUGR is not pin-compatible with LMV981IDBVR or LMV981IDCKR. LMV981IRUGR uses an 8-pin X2QFN (RUG) package with NC pins at positions 1–3 and 5, whereas LMV981IDBVR (SOT-23-6) and LMV981IDCKR (SC-70-6) are 6-pin packages with fully utilized terminals. PCB layout must be redesigned to accommodate the RUG footprint, thermal pad, and different pin assignment - especially the dedicated SHDN pin (pin 8) and isolated NC locations.
LMV981IRUGR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-XFQFN
- 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:
- 8-X2QFN (1.5x1.5)
LMV981IRUGR FAQ
1.How can I place an order for LMV981IRUGR through Aetrix?
Please submit a Request for Quotation (RFQ) for LMV981IRUGR 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 LMV981IRUGR reliable?
The price and inventory of LMV981IRUGR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV981IRUGR is usually 5 days.
3.What payment methods are accepted for LMV981IRUGR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV981IRUGR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMV981IRUGR?
LMV981IRUGR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMV981IRUGR 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 LMV981IRUGR?
For technical support, including LMV981IRUGR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV981IRUGR requirements.
6.How does Aetrix verify that LMV981IRUGR is sourced from the original manufacturer or authorized distributors?
All LMV981IRUGR 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 LMV981IRUGR meets industry standards.
7.What is the process for return or replacement of LMV981IRUGR?
All LMV981IRUGR units undergo pre-shipment inspection (PSI). If there is an issue with LMV981IRUGR, 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 LMV981IRUGR part is unused and in its original packaging.
Return procedure for LMV981IRUGR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LMV981IRUGR 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…
