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Texas Instruments LPV811DBVT
- Part No.:
- LPV811DBVT
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LPV811DBVT.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,662
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Product details
Overview
LPV811DBVT from Texas Instruments is a single-channel nanopower precision operational amplifier designed for ultra-low-power sensor signal conditioning in battery-critical applications. It delivers 425 nA typical supply current, 370 µV maximum offset voltage, 1 µV/°C offset drift, 8 kHz gain-bandwidth, and rail-to-rail output swing within 3.5 mV of rails at 1.8 V - enabling high-precision amplification in CO gas detectors, PIR motion sensors, and IoT remote nodes.
For engineers reviewing the LPV811DBVT datasheet, LPV811DBVT pinout, LPV811DBVT application, or LPV811DBVT equivalent, this page provides verified technical context, real-world design meaning for key specs, validated pin functions, application-specific implementation insights, and two confirmed alternative parts with documented functional and application-level differences.
Technical Context
The LPV811DBVT employs a CMOS input stage with 100 fA typical input bias current, enabling high-impedance source interfacing without significant error. Its negative-rail sensing input (VCM = V–) supports true single-supply operation down to 1.6 V, while rail-to-rail output maintains >99% dynamic range at low voltages.
Internally compensated for unity-gain stability, it achieves 8 kHz GBP with 120 dB open-loop gain and exhibits EMI-hardened architecture to suppress RF interference from mobile/WiFi sources. Offset is factory-trimmed, and TCVOS is specified over –40°C to +125°C for industrial-grade reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current | 450 nA typical per channel - enables >10-year battery life in coin-cell-powered sensors. |
| Input Offset Voltage | 370 µV max - ensures sub-millivolt DC accuracy in transimpedance and bridge amplifier stages. |
| Offset Drift | ±1 µV/°C - minimizes thermal-induced baseline shift across –40°C to +125°C operating range. |
| Gain-Bandwidth Product | 8 kHz - supports DC-coupled low-frequency sensor signals (e.g., gas diffusion, thermistor, PIR) without instability. |
| Input Bias Current | ±100 fA - preserves signal integrity when interfacing high-Z sources like electrochemical cells or piezoresistive elements. |
| Rail-to-Rail Output | Swings to within 3.5 mV of V+ and 2.5 mV of V– at 1.8 V/100 kΩ - maximizes ADC utilization in 1.8 V systems. |
| Common-Mode Range | Extends to V– - eliminates need for level-shifting in single-supply potentiostat or current-sense configurations. |
Pinout & Package
SOT-23-5 (DBV) package: 2.90 mm × 1.60 mm body, 0.95 mm height, gull-wing leads, JEDEC MO-178AC compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUT | Amplifier output | Delivers rail-to-rail voltage with <3.5 mV headroom; drives 100 kΩ load directly without buffering. |
| 2 - V– | Negative power supply | Reference for common-mode input range; supports single-supply operation with V– = GND. |
| 3 - +IN | Non-inverting input | High-impedance node (100 fA bias); used for reference voltage injection or sensor excitation feedback. |
| 4 - –IN | Inverting input | Primary signal input in transimpedance or inverting gain configurations; accepts currents down to femtoamp level. |
| 5 - V+ | Positive power supply | Accepts 1.6 V to 5.5 V; enables direct connection to Li-SOCl₂, coin cell, or energy-harvesting outputs. |
Key Features
| Feature | Design Value |
|---|---|
| Nanopower operation | 450 nA quiescent current enables multi-year operation on CR2032 (225 mAh) in always-on gas detection. |
| EMI-hardened architecture | Integrated filtering rejects RF interference from 10 MHz–1 GHz sources (e.g., BLE/WiFi), preventing false triggers in portable sensors. |
| No output reversals | Guaranteed monotonic output behavior during common-mode transients - critical for safety-critical thermostats and medical monitors. |
| Trimmed offset voltage | 370 µV max eliminates need for external nulling circuitry in precision current-sense and CO sensor front ends. |
| Wide temperature range | Specified from –40°C to +125°C supports deployment in automotive cabin sensors and industrial field devices. |
Applications
| CO Gas Detection | PIR Motion Sensing |
|---|---|
Use Scenario: Amplifying nanoamp-level current from unbiased three-terminal electrochemical CO sensor in battery-powered alarm. IC Role / Device Role / Timing Role: Transimpedance amplifier (TIA) with potentiostat bias loop, maintaining WE/RE potential alignment. Use Value: 100 fA input bias prevents sensor polarization error; 370 µV offset ensures ±10 ppm CO detection resolution. |
Use Scenario: Conditioning microvolt-level pyroelectric signal in ultra-low-power occupancy sensor. IC Role / Device Role / Timing Role: DC-coupled preamplifier with high-pass filtering, rejecting thermal drift while preserving slow-motion envelope. Use Value: 425 nA supply current extends CR2032 battery life beyond 5 years; rail-to-rail output fully utilizes 12-bit ADC range. |
| IoT Remote Sensor Node | Portable Medical Monitoring |
Use Scenario: Signal conditioning for low-power environmental sensor (temperature/humidity/air quality) in LoRaWAN endpoint. IC Role / Device Role / Timing Role: Precision buffer and level shifter between analog sensor and SAR ADC, operating from harvested energy. Use Value: 1.6 V minimum supply allows direct use with thin-film batteries or RF energy harvesters; EMI protection prevents data corruption. |
Use Scenario: Amplifying biopotential signals (e.g., skin conductance, pulse oximetry LED current feedback) in wearable patch monitor. IC Role / Device Role / Timing Role: Low-noise, low-drift gain stage preceding analog front-end; operates continuously during sleep mode. Use Value: 1 µV/°C drift avoids recalibration during body-temperature shifts; 120 dB open-loop gain ensures stable closed-loop performance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar nanopower precision op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LPV801DBVR | 500 nA IQ (vs. 450 nA), 3.5 mV VOS max (vs. 370 µV), no EMI hardening | Higher offset limits resolution in gas sensing; lacks EMI robustness for wireless-connected devices | Prefer LPV811DBVT where sub-millivolt DC accuracy and RF immunity are required. |
| TLV8811IDBVR | 350 nA IQ (lower), 600 µV VOS max (higher), same SOT-23-5 package, –40°C to +125°C | Higher offset reduces sensitivity in low-concentration gas detection; lower IQ benefits ultra-long-life designs | Choose TLV8811IDBVR only if supply current is primary constraint and offset tolerance ≥600 µV is acceptable. |
Compared with LPV801DBVR and TLV8811IDBVR, the LPV811DBVT uniquely balances ultra-low IQ (450 nA), tight offset (370 µV max), and integrated EMI protection - making it the optimal choice for safety-critical, battery-limited, and RF-noisy environments like portable gas detectors and medical wearables.
Availability
LPV811DBVT is available at Aetrix Electronics and suitable for CO gas detectors, PIR motion sensors, and IoT remote sensor nodes requiring stable component supply, long-lifecycle support, and guaranteed nanopower performance.
Supply support for LPV811DBVT 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 system solutions.
The LPV811DBVT belongs to TI's LPV8xx family of nanopower precision op-amps, engineered specifically for "always ON" sensing in battery- and energy-harvesting–powered equipment where operational lifetime and DC accuracy are paramount.
FAQ
What is the maximum supply voltage for LPV811DBVT?
The LPV811DBVT supports a maximum supply voltage of 6 V, as defined by its absolute maximum rating. However, its recommended operating range is 1.6 V to 5.5 V. Operating above 5.5 V risks permanent damage and invalidates parametric guarantees; all published specifications - including 450 nA quiescent current and 370 µV offset - apply strictly within the 1.6–5.5 V range.
Does LPV811DBVT support rail-to-rail input?
No, the LPV811DBVT does not support rail-to-rail input. Its input common-mode voltage range extends from V– to (V+ – 0.9 V). While it senses down to the negative rail (enabling true single-supply use), it cannot accept signals within 0.9 V of V+. This limitation is intentional to maintain low offset and high CMRR; LPV811DBVT is optimized for precision, not full-rail input coverage.
Can LPV811DBVT drive capacitive loads directly?
LPV811DBVT is unity-gain stable but becomes unstable with capacitive loads >50 pF directly at the output. For loads exceeding this, a 30–50 kΩ isolation resistor (RISO) must be placed between the output pin and the capacitor. This preserves phase margin and prevents peaking or oscillation - a requirement explicitly documented in the datasheet's Figure 45 and Section 7.4.4.
Is LPV811DBVT suitable for medical applications?
Yes, LPV811DBVT is suitable for portable medical monitoring applications such as wearable skin conductance sensors and pulse oximetry LED current feedback circuits. Its 100 fA input bias, 1 µV/°C drift, and –40°C to +125°C specification meet key requirements for clinical-grade signal fidelity and environmental robustness - provided final system validation complies with IEC 60601-1 and relevant regional regulatory standards.
What is the thermal resistance (θJA) of LPV811DBVT in SOT-23-5 package?
The junction-to-ambient thermal resistance (θJA) for LPV811DBVT in the DBV (SOT-23-5) package is 177.4°C/W, measured under standard JEDEC JESD51-2 conditions (single-layer board, 1 in² copper pad). This value assumes no additional PCB copper heatsinking; actual θJA improves significantly with thermal vias and larger ground planes - critical for sustained operation at 125°C ambient.
LPV811DBVT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.002V/µs
- Gain Bandwidth Product:
- 8 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.1 pA
- Voltage - Input Offset:
- 60 µV
- Current - Supply:
- 450nA
- Current - Output / Channel:
- 4.7 mA
- Voltage - Supply Span (Min):
- 1.6 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
LPV811DBVT FAQ
1.How can I place an order for LPV811DBVT through Aetrix?
Please submit a Request for Quotation (RFQ) for LPV811DBVT 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 LPV811DBVT reliable?
The price and inventory of LPV811DBVT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LPV811DBVT is usually 5 days.
3.What payment methods are accepted for LPV811DBVT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LPV811DBVT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LPV811DBVT?
LPV811DBVT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LPV811DBVT 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 LPV811DBVT?
For technical support, including LPV811DBVT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LPV811DBVT requirements.
6.How does Aetrix verify that LPV811DBVT is sourced from the original manufacturer or authorized distributors?
All LPV811DBVT 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 LPV811DBVT meets industry standards.
7.What is the process for return or replacement of LPV811DBVT?
All LPV811DBVT units undergo pre-shipment inspection (PSI). If there is an issue with LPV811DBVT, 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 LPV811DBVT part is unused and in its original packaging.
Return procedure for LPV811DBVT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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