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Texas Instruments LMV821DBVRG4
- Part No.:
- LMV821DBVRG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LMV821DBVRG4.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,513
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Product details
Overview
LMV821DBVRG4 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 0.4 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 LMV821DBVRG4 datasheet, LMV821DBVRG4 pinout, LMV821DBVRG4 application, or LMV821DBVRG4 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 100 mV from rails (at 2 kΩ load), and absence of crossover distortion in audio and sensor front-end designs.
Technical Context
The LMV821DBVRG4 employs a CMOS input stage with rail-to-rail output stage, supporting input common-mode voltage down to ground and output swing within 100 mV of supply rails under 2 kΩ load. Its 5.5 MHz unity-gain bandwidth and 64.2° phase margin ensure stable operation with capacitive loads up to 22 pF when driving 600 Ω–100 kΩ loads.
Designed for single-supply operation, it features 75 dB typical CMRR and PSRR over 1.7 V–4 V supply range, with input bias current below 100 nA and input offset voltage ≤3.5 mV (typical) across temperature - making it suitable for high-impedance sensor interfaces and battery-powered instrumentation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.5 V to 5.5 V - supports direct integration into 3.3 V and 5 V systems without level-shifting. |
| Gain Bandwidth Product | 5.5 MHz (typ @ 5 V) - enables stable closed-loop gain ≥10 at 500 kHz for anti-aliasing or active filtering. |
| Slew Rate | 1.9 V/μs (typ @ 5 V) - supports 100 kHz full-power sine wave output at 1.2 Vpp without distortion. |
| Output Swing | Within 100 mV of rails (RL = 2 kΩ) - preserves dynamic range in low-voltage ADC driver and comparator reference circuits. |
| Supply Current | 0.4 mA (typ @ 5 V) - allows continuous operation in always-on sensor nodes with <1 μA sleep leakage. |
| Input Offset Voltage | ≤3.5 mV (max @ –40°C to 85°C) - ensures ≤0.7% error in 500 mV full-scale medical sensor amplification. |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade embedded control and automotive cabin electronics. |
Pinout & Package
SOT-23-5 package (DBV): ultra-compact 2.9 mm × 1.6 mm footprint with 0.95 mm height, optimized for PCB area savings in portable devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN+) | Non-inverting input | Accepts signals from 0 V to VCC; supports DC-coupled sensor inputs referenced to ground. |
| 2 (IN−) | Inverting input | High-impedance node (IIB < 100 nA); used for feedback network connection in transimpedance or differential configurations. |
| 3 (OUT) | Amplifier output | Rail-to-rail capable: sources/sinks ≥12 mA while maintaining linearity near supply rails. |
| 4 (GND/VCC−) | Ground / negative supply | Single-supply reference point; must be low-impedance to minimize noise coupling in mixed-signal layouts. |
| 5 (VCC+) | Positive supply | Accepts 2.5–5.5 V; bypass capacitor (0.1 μF) required adjacent to pin for stability at high frequencies. |
Key Features
| Feature | Design Value |
|---|---|
| No crossover distortion | Eliminates audible artifacts in audio preamps and preserves waveform fidelity in pulse amplification. |
| Rail-to-rail output | Maximizes usable output voltage range in 3.3 V systems - critical for driving SAR ADC references without external biasing. |
| Low 0.4 mA supply current | Enables multi-channel sensor arrays with <2 mA total quiescent draw - extends battery life in wearable health monitors. |
| 5.5 MHz bandwidth at 5 V | Supports closed-loop gain of 100 with >50 kHz small-signal bandwidth for fast-response industrial control loops. |
| Input common-mode range includes ground | Allows direct interfacing with 0–2.5 V thermistor or bridge sensor outputs without level-shifting circuitry. |
Applications
| Portable Audio Preamp | Medical Sensor Signal Conditioning |
|---|---|
Use Scenario: Amplifying microphone output in Bluetooth headset before ADC sampling. IC Role / Device Role / Timing Role: Single-supply op-amp configured as non-inverting amplifier with gain = 20. Use Value: Rail-to-rail output ensures full 0–3.3 V swing utilization; 0.4 mA ICC minimizes impact on 200 mAh Li-ion battery runtime. | Use Scenario: Buffering and amplifying ECG electrode signals in handheld monitor. IC Role / Device Role / Timing Role: Instrumentation front-end buffer with high input impedance and low noise. Use Value: Input bias current <100 nA prevents electrode polarization; 42 nV/√Hz input noise preserves microvolt-level biopotential integrity. |
| Industrial Temperature Transmitter | Smart Home Smoke Detector Analog Front-End |
Use Scenario: Converting 4–20 mA loop current to 0.5–2.5 V for microcontroller ADC. IC Role / Device Role / Timing Role: Precision current-to-voltage converter with 250 Ω shunt resistor. Use Value: ≤3.5 mV VIO ensures <0.14% full-scale error across –40°C to 85°C ambient range. | Use Scenario: Amplifying photoelectric smoke chamber output in battery-powered detector. IC Role / Device Role / Timing Role: Low-power transimpedance amplifier for photodiode current sensing. Use Value: 0.4 mA ICC enables 5-year operation on CR123A; rail-to-rail output maximizes dynamic range for weak smoke-induced currents. |
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, lower-bandwidth applications (e.g., simple comparators, basic buffers). | Select LMV321DBVR only if bandwidth <1 MHz suffices and power budget is tighter than 0.4 mA. |
| TLV9001IDBVR | Higher 1 MHz GBW, 0.15 mA ICC, rail-to-rail I/O, but specified for –40°C to 125°C. | Designed for extended-temperature industrial and automotive environments requiring higher reliability. | Choose TLV9001IDBVR when operating above 85°C or when lower quiescent current is mandatory despite reduced bandwidth. |
Compared with LMV821DBVRG4, LMV321DBVR trades 82% bandwidth for 38% lower supply current, while TLV9001IDBVR offers wider temperature qualification and lower ICC but sacrifices 82% bandwidth - making LMV821DBVRG4 optimal for 5.5 MHz–capable, 85°C-limited portable designs.
Availability
LMV821DBVRG4 is available at Aetrix Electronics and suitable for portable audio systems, medical wearables, industrial transmitters, and smart home safety devices requiring stable component supply and legacy design continuity.
Supply support for LMV821DBVRG4 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, with over 90 years of innovation in precision analog ICs.
The LMV8xx family was designed specifically for low-voltage, low-power signal conditioning in space-constrained portable electronics - balancing bandwidth, rail-to-rail performance, and quiescent current efficiency.
FAQ
What is the maximum supply voltage rating for LMV821DBVRG4?
The absolute maximum supply voltage for LMV821DBVRG4 is 5.5 V. Operation beyond this risks permanent damage. The recommended operating range is 2.5 V to 5 V per TI's SLOS434I datasheet, ensuring reliable rail-to-rail output swing and specified electrical performance across temperature.
Does LMV821DBVRG4 support true rail-to-rail input?
No, LMV821DBVRG4 does not support rail-to-rail input. Its input common-mode voltage range extends to ground (0 V) but only up to VCC – 0.2 V (min) at 25°C - meaning it accepts inputs from 0 V to ~4.8 V when powered from 5 V. Full rail-to-rail input capability is not specified for this device.
What is the typical output current drive capability of LMV821DBVRG4?
LMV821DBVRG4 can source and sink ≥12 mA while maintaining linearity (VO = 0 V to 2.7 V at VCC = 2.7 V). At 5 V supply, it delivers ≥20 mA sourcing and ≥20 mA sinking into resistive loads - sufficient for driving ADC references, LED bias networks, or moderate-capacitance signal chains.
Is LMV821DBVRG4 still recommended for new designs?
No - LMV821DBVRG4 is marked "Not Recommended for New Designs" in TI's official documentation (SLOS434I, Rev. July 2006). While fully functional and supported for legacy production, TI recommends newer alternatives like TLV9001 or LMV321 for new projects due to improved specs and long-term availability assurance.
What is the thermal resistance (θJA) of the SOT-23-5 package used by LMV821DBVRG4?
The junction-to-ambient thermal resistance (θJA) for the SOT-23-5 (DBV) package of LMV821DBVRG4 is 206°C/W, as specified in TI's SLOS434I datasheet. This value assumes standard JEDEC 2-layer board conditions; actual thermal performance improves significantly with copper pour and thermal vias beneath the exposed pad (if present) - though DBV lacks an exposed thermal pad.
LMV821DBVRG4 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
LMV821DBVRG4 FAQ
1.How can I place an order for LMV821DBVRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for LMV821DBVRG4 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 LMV821DBVRG4 reliable?
The price and inventory of LMV821DBVRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV821DBVRG4 is usually 5 days.
3.What payment methods are accepted for LMV821DBVRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV821DBVRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMV821DBVRG4?
LMV821DBVRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMV821DBVRG4 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 LMV821DBVRG4?
For technical support, including LMV821DBVRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV821DBVRG4 requirements.
6.How does Aetrix verify that LMV821DBVRG4 is sourced from the original manufacturer or authorized distributors?
All LMV821DBVRG4 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 LMV821DBVRG4 meets industry standards.
7.What is the process for return or replacement of LMV821DBVRG4?
All LMV821DBVRG4 units undergo pre-shipment inspection (PSI). If there is an issue with LMV821DBVRG4, 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 LMV821DBVRG4 part is unused and in its original packaging.
Return procedure for LMV821DBVRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LMV821DBVRG4 Tags
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