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Texas Instruments LMV821DBVR
- Part No.:
- LMV821DBVR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LMV821DBVR.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,634
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Product details
Overview
LMV821DBVR from Texas Instruments is a single-channel, rail-to-rail output operational amplifier optimized for low-voltage (2.5 V to 5.5 V), low-power applications. It delivers 5.5 MHz gain bandwidth, 1.9 V/μs slew rate, and 0.3 mA typical supply current at 5 V - enabling precision signal conditioning in space-constrained portable electronics such as cordless phones and PDAs.
For engineers reviewing the LMV821DBVR datasheet, LMV821DBVR pinout, LMV821DBVR application, or LMV821DBVR equivalent, key selection criteria include its SOT-23-5 package footprint, –40°C to 85°C operating range, rail-to-rail output swing down to 0.17 V from VCC+ and 0.1 V from GND at 5 V/2 kΩ, and compatibility with single-supply sensor interfaces requiring low input bias current (≤30 nA) and low offset voltage (≤4 mV).
Technical Context
The LMV821DBVR employs a CMOS input stage with rail-to-rail output architecture, supporting common-mode input voltage range extending 0.3 V below ground and up to 4.3 V at 5 V supply. Its internal compensation ensures stability with capacitive loads up to 22 pF while maintaining ≥64.2° phase margin at 5 V/600 Ω.
Designed for single-supply operation, it achieves 95–105 dB large-signal voltage amplification and 72–90 dB CMRR across –40°C to 85°C, with output sourcing/sinking capability of ±20 mA at 5 V - suitable for driving resistive loads without external buffers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.5 V to 5.5 V - enables direct interface with Li-ion battery rails and 3.3 V/5 V logic domains |
| Gain Bandwidth | 5.5 MHz typ at 5 V - supports closed-loop configurations up to ~500 kHz with unity-gain stability |
| Slew Rate | 1.9 V/μs typ at 5 V - sufficient for 10-bit ADC driver stages with ≤100 kHz full-scale transitions |
| Input Offset Voltage | ≤4 mV max over –40°C to 85°C - maintains accuracy in DC-coupled sensor front-ends |
| Output Swing | Rail-to-rail: 0.1 V above GND / 0.17 V below VCC+ at 5 V/2 kΩ - maximizes dynamic range in single-supply systems |
| Supply Current | 0.3 mA typ at 5 V - allows integration into always-on monitoring circuits with <1 μA sleep leakage |
| Input Bias Current | ≤30 nA max over temperature - minimizes voltage error in high-impedance photodiode or thermistor interfaces |
Pinout & Package
SOT-23-5 package (DBV): 2.9 mm × 1.6 mm × 1.15 mm body, surface-mount, gull-wing leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN+) | Non-inverting input | Accepts input signals within –0.3 V to VCC+ + 0.2 V; supports DC-coupled sources referenced to ground |
| 2 (IN−) | Inverting input | Differential node for feedback networks; matched input impedance minimizes common-mode error |
| 3 (OUT) | Amplified output | Drives loads from 2 kΩ to 600 Ω with rail-to-rail swing; stable into 22 pF capacitive load |
| 4 (GND/VCC−) | Ground reference / negative supply | Single-supply operation: connects to system ground; no dual-supply configuration supported |
| 5 (VCC+) | Positive supply | Accepts 2.5–5.5 V; decoupling capacitor required within 1 cm for PSRR >70 dB |
Key Features
| Feature | Design Value |
|---|---|
| No crossover distortion | Eliminates switching artifacts in audio and precision analog paths, preserving signal fidelity at low amplitudes |
| Rail-to-rail output | Delivers full 4.8 Vpp swing from 5 V supply into 2 kΩ, increasing usable ADC input range by 20% vs. legacy op-amps |
| Low 0.3 mA supply current | Enables battery life extension in portable medical sensors where continuous 1 kHz sampling is required |
| 5.5 MHz GBW at 5 V | Supports active filtering of ECG signals up to 150 Hz with >60 dB stopband attenuation using 2nd-order topology |
| –40°C to 85°C operation | Validated performance across industrial ambient ranges without derating, simplifying thermal design |
Applications
| Portable Sensor Interface | Low-Power Data Acquisition |
|---|---|
Use Scenario: Amplifying output of MEMS accelerometer in wearable fitness tracker powered by coin-cell battery. IC Role / Device Role / Timing Role: Single-supply transimpedance amplifier converting nanoamp-level sensor current to buffered voltage for 12-bit SAR ADC. Use Value: 0.3 mA quiescent current extends battery life beyond 6 months; rail-to-rail output ensures full utilization of ADC reference voltage. | Use Scenario: Signal conditioning for thermistor-based temperature monitoring in smart thermostat. IC Role / Device Role / Timing Role: Precision non-inverting amplifier with 10× gain, rejecting common-mode noise on long PCB traces. Use Value: ≤4 mV input offset voltage limits temperature measurement error to <0.5°C; 72 dB CMRR suppresses 50/60 Hz interference. |
| Audio Line Driver | Industrial Analog Output |
Use Scenario: Driving 32 Ω headphone load in Bluetooth earbud with 3.3 V supply. IC Role / Device Role / Timing Role: Low-distortion buffer stage with gain-of-1 configuration and DC-blocking capacitor. Use Value: No crossover distortion preserves harmonic integrity below 100 Hz; 1.9 V/μs slew rate prevents slew-induced THD in 20 kHz audio band. | Use Scenario: Generating 0–10 V analog control signal from microcontroller DAC in PLC I/O module. IC Role / Device Role / Timing Role: Unity-gain voltage follower isolating DAC output from variable load impedance. Use Value: 20 mA output drive capability sustains 0–10 V across 500 Ω minimum load; 5.5 MHz GBW ensures step response settling <1 μs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMV321DBVR | Lower 1 MHz GBW, 0.25 mA ICC, same SOT-23-5 package and pinout | Targeted at cost-sensitive DC/low-frequency apps (e.g., battery voltage monitor); insufficient for >100 kHz signal chains | Select LMV321DBVR only when bandwidth <1 MHz suffices and power budget is tighter than 0.3 mA |
| TLV9001IDBVR | Higher 1 MHz GBW, 0.15 mA ICC, rail-to-rail I/O, same DBV package | Optimized for ultra-low-power IoT endpoints; lower drive strength (40 mA sink) but superior noise (30 nV/√Hz) | Choose TLV9001IDBVR for sub-100 μA average current designs where 1 MHz bandwidth meets requirements |
Compared with LMV321DBVR, LMV821DBVR provides 4.5× higher bandwidth and faster settling for dynamic signals, while TLV9001IDBVR trades 1.5× lower supply current for reduced drive capability and narrower small-signal bandwidth - making LMV821DBVR optimal for mid-speed, moderate-drive analog front-ends.
Availability
LMV821DBVR is available at Aetrix Electronics and suitable for portable sensor interfaces, low-power data acquisition systems, audio line drivers, and industrial analog outputs requiring stable component supply across extended temperature ranges.
Supply support for LMV821DBVR 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 delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.
The LMV8xx family targets low-voltage, low-power operational amplifier applications in space-constrained portable devices - emphasizing rail-to-rail output, low quiescent current, and robust AC performance across commercial and extended temperature grades.
FAQ
What is the operating temperature range for LMV821DBVR?
The LMV821DBVR is specified for operation from –40°C to +85°C. This commercial-grade temperature range is validated per TI's SLOS434I datasheet, with electrical characteristics guaranteed across this span - including input offset voltage ≤4 mV, supply current ≤0.6 mA, and output swing maintaining rail-to-rail behavior. It is not rated for automotive or extended industrial temperatures.
Does LMV821DBVR support dual-supply operation?
No, LMV821DBVR does not support true dual-supply operation. Its pinout defines Pin 4 as GND/VCC−, indicating it is designed exclusively for single-supply use with ground as the negative reference. While the input common-mode range extends 0.3 V below ground, applying a negative voltage to Pin 4 violates absolute maximum ratings and may cause permanent damage.
What is the maximum capacitive load LMV821DBVR can drive stably?
LMV821DBVR is stable driving up to 22 pF capacitive load with 40-dB closed-loop DC gain, as confirmed in the datasheet's "Gain and Phase Margin vs Frequency" plots (Figures 17–21). Driving larger capacitances - such as ADC input capacitors exceeding 22 pF - requires an isolation resistor (≥100 Ω) between LMV821DBVR output and the load to maintain ≥64° phase margin and prevent oscillation.
How does LMV821DBVR compare to LMV821IDBVR?
LMV821DBVR and LMV821IDBVR share identical electrical specifications and SOT-23-5 packaging, but differ in temperature grade: LMV821DBVR is rated for –40°C to +85°C, while LMV821IDBVR extends to –40°C to +125°C. The 'I' suffix denotes the extended temperature variant, with identical pinout, marking (RB1B vs RB8B), and supply current - making them functionally interchangeable where ambient conditions stay within 85°C.
Is LMV821DBVR recommended for new designs?
No - LMV821DBVR is marked "Not Recommended for New Designs" in the official TI datasheet (SLOS434I, Rev. July 2006) and listed as OBSOLETE in TI's 2016 Packaging Addendum. While functional and available through authorized distributors, TI advises migration to newer alternatives like TLV9001 or LPV821 for long-term supply assurance and improved specs including lower noise and enhanced ESD protection.
LMV821DBVR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 1.9V/µs
- Gain Bandwidth Product:
- 5.5 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 40 nA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 300µA
- Current - Output / Channel:
- 45 mA
- Voltage - Supply Span (Min):
- 2.5 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
LMV821DBVR FAQ
1.How can I place an order for LMV821DBVR through Aetrix?
Please submit a Request for Quotation (RFQ) for LMV821DBVR 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 LMV821DBVR reliable?
The price and inventory of LMV821DBVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV821DBVR is usually 5 days.
3.What payment methods are accepted for LMV821DBVR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV821DBVR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMV821DBVR?
LMV821DBVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMV821DBVR 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 LMV821DBVR?
For technical support, including LMV821DBVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV821DBVR requirements.
6.How does Aetrix verify that LMV821DBVR is sourced from the original manufacturer or authorized distributors?
All LMV821DBVR 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 LMV821DBVR meets industry standards.
7.What is the process for return or replacement of LMV821DBVR?
All LMV821DBVR units undergo pre-shipment inspection (PSI). If there is an issue with LMV821DBVR, 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 LMV821DBVR part is unused and in its original packaging.
Return procedure for LMV821DBVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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