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Texas Instruments LMV821DBVRE4
- Part No.:
- LMV821DBVRE4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LMV821DBVRE4.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,292
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Product details
Overview
LMV821DBVRE4 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 LMV821DBVRE4 datasheet, LMV821DBVRE4 pinout, LMV821DBVRE4 application, or LMV821DBVRE4 equivalent, key selection criteria include its SOT-23-5 package footprint, –40°C to 85°C operating range, rail-to-rail output swing, input common-mode range extending to ground, and compatibility with 2.5-V/2.7-V/5-V supply rails.
Technical Context
The LMV821DBVRE4 employs a CMOS input stage with rail-to-rail output architecture, supporting single-supply operation down to 2.5 V while maintaining low crossover distortion and stable unity-gain performance. Its internal compensation ensures stability with capacitive loads up to 22 pF across 600 Ω–100 kΩ load ranges.
It features an input common-mode voltage range from –0.2 V to VCC+ – 0.3 V (at 5 V), 72 dB minimum CMRR, and 75 dB typical PSRR - making it suitable for sensor front-ends and battery-powered analog signal chains where ground-referenced inputs and noise immunity are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.5 V to 5.5 V - enables direct integration into 3.3-V and 5-V systems without level-shifting. |
| Gain Bandwidth | 5.5 MHz typ at 5 V - supports closed-loop amplification of signals up to ~500 kHz with ≥10× gain. |
| Slew Rate | 1.9 V/μs typ at 5 V - allows clean reproduction of 300-kHz full-scale sine waves at 5 V output swing. |
| Input Offset Voltage | 1 mV typ, 4 mV max (–40°C to 85°C) - ensures ≤20 mV error in 20× gain configurations at room temperature. |
| Output Swing | Rail-to-rail: 0.17 V from VCC+, 0.1 V from GND at 5 V/2 kΩ - maximizes dynamic range in single-supply ADC driver stages. |
| Supply Current | 0.3 mA typ at 5 V - enables >10-year battery life in always-on sensor nodes powered by coin cells. |
| Operating Temp | –40°C to +85°C - qualified for industrial-grade embedded control and consumer portable equipment. |
Pinout & Package
SOT-23-5 package (DBV): ultra-compact 2.9 mm × 1.6 mm footprint with 0.95 mm height, optimized for high-density PCB layouts in handheld devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Amplifier output | Delivers rail-to-rail voltage swing; drives loads ≥2 kΩ directly without external buffering. |
| 2 (IN−) | Inverting input | High-impedance CMOS node; accepts input voltages from –0.2 V to VCC+ – 0.3 V. |
| 3 (GND/VCC−) | Ground / negative supply | Reference node for single-supply operation; must be low-impedance to minimize PSRR degradation. |
| 4 (IN+) | Non-inverting input | Matches IN− characteristics; enables differential sensing or ground-referenced signal amplification. |
| 5 (VCC+) | Positive supply | Accepts 2.5–5.5 V; bypass capacitor (0.1 μF) required within 2 mm for stability and noise suppression. |
Key Features
| Feature | Design Value |
|---|---|
| No crossover distortion | Eliminates switching artifacts in audio and precision DC-coupled paths, preserving signal fidelity at low amplitudes. |
| Rail-to-rail output | Enables full utilization of ADC reference voltage in single-supply data acquisition systems. |
| Input common-mode range includes ground | Permits direct interfacing with ground-referenced sensors (e.g., thermistors, bridge transducers) without level shifters. |
| Low 0.3 mA supply current at 5 V | Reduces thermal load and extends battery runtime in always-on wearable health monitors. |
| 5.5-MHz GBW with 22-pF capacitive load stability | Supports fast-settling active filters and anti-aliasing stages without external compensation. |
Applications
| Portable Audio Preamp | Medical Sensor Signal Conditioning |
|---|---|
Use Scenario: Amplifying microphone output in Bluetooth headsets before ADC sampling. IC Role / Device Role / Timing Role: Single-supply op-amp configured as non-inverting amplifier with 10× gain and AC coupling. Use Value: Rail-to-rail output ensures maximum SNR when driving 1.8-V SAR ADC; low 45 nV/√Hz input noise preserves voice clarity. | Use Scenario: Buffering and scaling output of a skin-temperature thermistor in a wearable patch monitor. IC Role / Device Role / Timing Role: Ground-sensing instrumentation amplifier front-end with 1% gain accuracy. Use Value: Input common-mode range including ground eliminates need for bias resistors; 0.3 mA ICC enables multi-day operation on CR2032 cell. |
| Industrial 4–20 mA Receiver | Low-Power Data Acquisition Front-End |
Use Scenario: Converting 4–20 mA loop current to 0–5 V voltage for PLC analog input modules. IC Role / Device Role / Timing Role: Transimpedance amplifier with precision shunt resistor and rail-to-rail output stage. Use Value: 5.5 MHz GBW supports fast transient response to loop faults; 72 dB CMRR rejects common-mode noise on long field wiring. | Use Scenario: Driving SAR ADC inputs in battery-powered environmental sensor nodes (CO₂, humidity). IC Role / Device Role / Timing Role: Unity-gain buffer isolating high-impedance sensor outputs from ADC sample-and-hold capacitance. Use Value: 0.1 V output headroom at 5 V allows full-scale 0–5 V conversion; 1.9 V/μs slew rate ensures <1 μs settling to 0.1%. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMV821IDBVR | Same electrical specs but rated for –40°C to 125°C; DBV package; top-side marking RB1B. | Required for under-hood automotive or industrial control environments exceeding 85°C ambient. | Select LMV821IDBVR only if extended temperature qualification is mandatory; otherwise LMV821DBVRE4 suffices for commercial-grade designs. |
| TLV2461CDBVR | Lower 1.2-mA supply current at 5 V, 6.4-MHz GBW, but higher 2.5-mV max VIO and no guaranteed rail-to-rail output below 100 mV of rails. | Better for ultra-low-noise, higher-speed applications where offset and output swing margins are relaxed. | Choose TLV2461CDBVR when bandwidth >5.5 MHz is needed and supply current <1.2 mA is acceptable; avoid if rail-to-rail output within 100 mV is required. |
Compared with LMV821IDBVR, LMV821DBVRE4 offers identical performance at lower cost and qualification scope, while TLV2461CDBVR trades guaranteed rail-to-rail output and lower offset for higher speed and slightly higher quiescent current - making LMV821DBVRE4 optimal for cost-sensitive, space-constrained 2.5–5.5-V systems requiring precision output swing.
Availability
LMV821DBVRE4 is available at Aetrix Electronics and suitable for portable medical devices, industrial sensor interfaces, and battery-powered data loggers requiring stable component supply and long-term obsolescence management.
Supply support for LMV821DBVRE4 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 was designed specifically for low-voltage, low-power, space-constrained applications - emphasizing rail-to-rail output, ground-sensing capability, and robust performance across 2.5–5.5-V supplies.
FAQ
What is the operating temperature range for LMV821DBVRE4?
The LMV821DBVRE4 is characterized for operation from –40°C to +85°C. This commercial-grade temperature range is validated per TI's SLOS434I datasheet and applies to all electrical specifications unless otherwise noted. The device is not rated for extended temperature operation beyond this range, and use outside these limits may result in parametric degradation or functional failure.
Does LMV821DBVRE4 support true rail-to-rail output swing?
Yes, LMV821DBVRE4 provides rail-to-rail output swing: at 5 V supply and 2 kΩ load, it swings to within 0.1 V of GND and 0.17 V of VCC+. This is confirmed in the 5-V Electrical Characteristics table (page 9) of the datasheet, enabling full utilization of ADC reference voltage in single-supply systems without external level-shifting circuitry.
What is the input common-mode voltage range of LMV821DBVRE4?
The input common-mode voltage range of LMV821DBVRE4 extends from –0.2 V to VCC+ – 0.3 V at 25°C (e.g., –0.2 V to 4.7 V at 5 V supply). This includes ground, allowing direct connection of ground-referenced sensors like thermistors or strain gauges without input biasing - a key feature documented in the 5-V Electrical Characteristics section (page 9).
Is LMV821DBVRE4 pin-compatible with other LMV8xx variants?
No, LMV821DBVRE4 is not pin-compatible with LMV822 or LMV824. It uses a 5-pin SOT-23 (DBV) package, whereas LMV822 is 8-pin and LMV824 is 14-pin. However, LMV821DBVRE4 shares identical pinout with other LMV821 variants in DBV packaging (e.g., LMV821DBVR, LMV821DBVT), as shown in the "LMV821 … DBV OR DCK PACKAGE (TOP VIEW)" diagram on page 1 of the datasheet.
What is the typical supply current of LMV821DBVRE4 at 5 V?
The typical supply current of LMV821DBVRE4 is 0.3 mA at VCC+ = 5 V and TA = 25°C, as specified in the "Features" section (page 1) and confirmed in the 5-V Electrical Characteristics table (page 9). This value increases to 0.4 mA max over the full –40°C to 85°C operating range, supporting ultra-low-power design goals in battery-operated systems.
LMV821DBVRE4 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:
- -
- 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
LMV821DBVRE4 FAQ
1.How can I place an order for LMV821DBVRE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for LMV821DBVRE4 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 LMV821DBVRE4 reliable?
The price and inventory of LMV821DBVRE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV821DBVRE4 is usually 5 days.
3.What payment methods are accepted for LMV821DBVRE4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV821DBVRE4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMV821DBVRE4?
LMV821DBVRE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMV821DBVRE4 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 LMV821DBVRE4?
For technical support, including LMV821DBVRE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV821DBVRE4 requirements.
6.How does Aetrix verify that LMV821DBVRE4 is sourced from the original manufacturer or authorized distributors?
All LMV821DBVRE4 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 LMV821DBVRE4 meets industry standards.
7.What is the process for return or replacement of LMV821DBVRE4?
All LMV821DBVRE4 units undergo pre-shipment inspection (PSI). If there is an issue with LMV821DBVRE4, 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 LMV821DBVRE4 part is unused and in its original packaging.
Return procedure for LMV821DBVRE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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