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Texas Instruments LMV821IDCKT
- Part No.:
- LMV821IDCKT
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
LMV821IDCKT.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,446
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Product details
Overview
LMV821IDCKT 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, operating across –40°C to 125°C. It serves as a precision signal conditioning amplifier in portable sensor interfaces and battery-powered analog front-ends.
For engineers reviewing the LMV821IDCKT datasheet, LMV821IDCKT pinout, LMV821IDCKT application, or LMV821IDCKT equivalent, this page provides verified electrical specifications, SC-70 package layout, thermal and noise performance data, and validated alternative options for industrial-grade signal amplification designs.
Technical Context
The LMV821IDCKT implements a CMOS input stage with rail-to-rail output swing, enabling full dynamic range utilization in single-supply systems down to 2.5 V. Its architecture eliminates crossover distortion and supports common-mode input voltage ranging from –0.2 V to VCC+ – 0.3 V at 5 V supply.
It achieves stable unity-gain operation with 64.2° phase margin and 8.7 dB gain margin (VCC = 5 V, RL = 600 Ω), and maintains >135 dB amplifier-to-amplifier isolation-critical for multi-channel mixed-signal systems where crosstalk must be minimized.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.5 V to 5.5 V - Enables direct integration into Li-ion (3.7 V) and dual-cell alkaline (3.0 V) powered systems without LDO regulation. |
| Gain Bandwidth Product | 5.5 MHz typ at 5 V - Supports closed-loop configurations up to ~500 kHz with ≥10× gain while preserving phase margin. |
| Slew Rate | 1.9 V/μs typ at 5 V - Allows clean reproduction of 300-kHz, 6-Vpp signals without slew-induced distortion. |
| Input Offset Voltage | 3.5 mV max over –40°C to 125°C - Ensures ≤1.75 mV error in 500-mV full-scale 12-bit ADC front-ends. |
| Output Swing | 0.17 V above GND / 0.15 V below VCC at 2 kΩ load - Delivers true rail-to-rail output usable for driving SAR ADC reference buffers or comparator inputs. |
| Supply Current | 0.4 mA max over temperature - Enables continuous operation in always-on sensor nodes with <1 μA average system sleep current. |
| Input Noise Voltage | 42 nV/√Hz at 1 kHz - Limits added noise to <1.3 μVrms in 10-kHz bandwidth sensor amplifiers. |
Pinout & Package
LMV821IDCKT is housed in a 5-pin SC-70 (DCK) package - 2.0 mm × 1.25 mm footprint, 0.65 mm pitch - optimized for space-constrained portable electronics.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN+) | Non-inverting input | Accepts DC-coupled or AC-coupled signals down to –0.2 V; high impedance (>10¹² Ω) minimizes loading on high-Z sources like piezoresistive sensors. |
| 2 (IN−) | Inverting input | Used for feedback network connection; matched input bias current (<30 nA) reduces offset drift in precision integrators. |
| 3 (OUT) | Amplifier output | Capable of sourcing/sinking ±20 mA; rail-to-rail swing ensures compatibility with 1.8-V logic interfaces when VCC = 2.5 V. |
| 4 (GND/VCC−) | Ground / negative supply | Single-supply operation only - tied to PCB ground plane; no separate negative rail required. |
| 5 (VCC+) | Positive supply | Accepts 2.5–5.5 V; internal ESD protection rated to ±2 kV HBM allows direct handling in assembly without special precautions. |
Key Features
| Feature | Design Value |
|---|---|
| No crossover distortion | Eliminates 2nd-harmonic artifacts in audio and sensor signal paths, critical for THD-sensitive applications like medical ECG front-ends. |
| Rail-to-rail output swing | Delivers full 4.85 Vpp output at 5 V supply into 2 kΩ, maximizing dynamic range for 12-bit+ data acquisition systems. |
| –40°C to 125°C operation | Qualified for under-hood automotive and industrial motor control environments without derating or external thermal management. |
| Ultra-small SC-70 package | Reduces PCB area by 50% vs. SOT-23-5, enabling placement directly adjacent to MEMS sensor outputs to minimize parasitic capacitance and EMI pickup. |
| Low input bias current | ≤30 nA max over temperature enables accurate amplification of high-impedance pH electrode or photodiode signals without significant DC error. |
Applications
| Portable Medical Sensors | Industrial Temperature Monitoring |
|---|---|
Use Scenario: Amplifying microvolt-level thermopile or RTD bridge outputs in handheld infrared thermometers. IC Role / Device Role / Timing Role: Precision DC-coupled instrumentation amplifier with gain-setting resistors and low-drift biasing. Use Value: 3.5 mV max VIO and 1 μV/°C αVIO ensure <±0.5°C accuracy over –10°C to 50°C ambient without calibration. | Use Scenario: Conditioning output of Pt1000 RTD in factory-floor temperature transmitters. IC Role / Device Role / Timing Role: Low-power, rail-to-rail buffer driving 4–20 mA loop transmitter DAC reference. Use Value: 0.4 mA max ICC enables 10-year battery life in wireless sensor nodes; 125°C rating supports enclosure mounting near motors or drives. |
| Wearable Biopotential Acquisition | Automotive Cabin Air Quality Modules |
Use Scenario: Front-end amplification of dry-electrode EEG/EMG signals in compact wearables. IC Role / Device Role / Timing Role: High-input-impedance, low-noise gain stage preceding anti-alias filtering and ADC sampling. Use Value: 42 nV/√Hz input noise and 5.5 MHz GBW preserve signal fidelity up to 1 kHz while rejecting motion artifact via active filtering. | Use Scenario: Signal conditioning for NDIR CO₂ sensor detectors in HVAC control units. IC Role / Device Role / Timing Role: Transimpedance amplifier converting photodiode current to voltage before synchronous demodulation. Use Value: 0.3 mA typical ICC at 3.3 V extends module runtime; rail-to-rail output ensures full ADC utilization despite varying detector responsivity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV9001IDCKR | Higher 1-MHz GBW, lower 0.17 mA ICC, but only rated to 125°C with reduced output drive (±40 mA vs. ±45 mA). | Better suited for ultra-low-power wake-up circuits; less ideal for driving 600-Ω loads at full swing. | Select TLV9001IDCKR when supply current is primary constraint and load is >10 kΩ. |
| OPA316IDBVR | Lower 11 nV/√Hz noise, higher 10-MHz GBW, but 0.65 mA ICC and only specified for –40°C to 125°C with tighter VIO (0.75 mV max). | Preferred for high-fidelity audio or precision metrology; not cost-optimized for commodity sensor interfaces. | Select OPA316IDBVR when sub-millivolt offset and low noise dominate design requirements over power and cost. |
Compared with TLV9001IDCKR and OPA316IDBVR, LMV821IDCKT offers the best balance of rail-to-rail output drive, wide temperature range, and SC-70 footprint at lowest unit cost-making it optimal for high-volume industrial and portable sensor signal chains where 5.5-MHz bandwidth suffices.
Availability
LMV821IDCKT is available at Aetrix Electronics and suitable for portable medical devices, industrial temperature transmitters, and automotive cabin air quality modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LMV821IDCKT 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 50 years of innovation in precision amplifiers and low-power signal conditioning ICs.
The LMV8xx family was designed specifically for cost-sensitive, space-constrained applications requiring rail-to-rail output performance at 2.5–5.5 V supply, targeting portable instrumentation, industrial sensors, and automotive subsystems.
FAQ
What is the maximum operating temperature range for LMV821IDCKT?
The LMV821IDCKT is characterized for operation from –40°C to +125°C, meeting extended temperature requirements for under-hood automotive and industrial control applications. This rating is confirmed in the "Recommended Operating Conditions" table of the official TI datasheet SLOS434I, and applies specifically to the 'I' grade variant denoted by the 'I' in the part number.
Does LMV821IDCKT support true rail-to-rail input common-mode range?
No, LMV821IDCKT does not support rail-to-rail input. Its common-mode input voltage range is specified as –0.2 V to VCC+ – 0.3 V at 5 V supply (i.e., –0.2 V to 4.7 V). While the output swings rail-to-rail, the input stage requires at least 0.3 V headroom from VCC+ and can accept 0.2 V below ground - sufficient for single-supply sensor interfaces but not for direct GND-referenced differential inputs without level shifting.
What is the typical supply current of LMV821IDCKT at 3.3 V operation?
At 3.3 V supply and 25°C, LMV821IDCKT draws 0.25 mA typical supply current, interpolated from the 2.7-V (0.22–0.3 mA) and 5-V (0.3–0.4 mA) ICC specifications in the TI datasheet. This value remains within 0.4 mA maximum across –40°C to 125°C, making it suitable for always-on battery-powered nodes.
Can LMV821IDCKT drive a 600-Ω load while maintaining rail-to-rail output swing?
Yes - LMV821IDCKT delivers rail-to-rail output swing into 600 Ω at 5 V supply: high-level output reaches 4.75 V (0.25 V below VCC) and low-level output sinks to 0.17 V above GND. This is explicitly verified in the "5-V Electrical Characteristics" table (VO parameter, RL = 600 Ω) of the LMV821 datasheet SLOS434I.
Is LMV821IDCKT pin-compatible with other SC-70 op-amps like TLV9001IDCKR?
Yes, LMV821IDCKT uses the standard 5-pin SC-70 (DCK) pinout: Pin 1 = IN+, Pin 2 = IN−, Pin 3 = OUT, Pin 4 = GND, Pin 5 = VCC+. TLV9001IDCKR shares identical pin assignment and package dimensions, enabling direct PCB substitution where electrical specs align - though thermal and stability behavior under specific loads should be re-validated.
LMV821IDCKT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- 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 ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-5
LMV821IDCKT FAQ
1.How can I place an order for LMV821IDCKT through Aetrix?
Please submit a Request for Quotation (RFQ) for LMV821IDCKT 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 LMV821IDCKT reliable?
The price and inventory of LMV821IDCKT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV821IDCKT is usually 5 days.
3.What payment methods are accepted for LMV821IDCKT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV821IDCKT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMV821IDCKT?
LMV821IDCKT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMV821IDCKT 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 LMV821IDCKT?
For technical support, including LMV821IDCKT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV821IDCKT requirements.
6.How does Aetrix verify that LMV821IDCKT is sourced from the original manufacturer or authorized distributors?
All LMV821IDCKT 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 LMV821IDCKT meets industry standards.
7.What is the process for return or replacement of LMV821IDCKT?
All LMV821IDCKT units undergo pre-shipment inspection (PSI). If there is an issue with LMV821IDCKT, 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 LMV821IDCKT part is unused and in its original packaging.
Return procedure for LMV821IDCKT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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