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Texas Instruments LMV822DGKR
- Part No.:
- LMV822DGKR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LMV822DGKR.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,767
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Product details
Overview
LMV822DGKR from Texas Instruments is a dual, 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 0.5 mA typical supply current per amplifier at 5 V - enabling precision signal conditioning in space-constrained portable electronics such as sensor front-ends and battery-powered instrumentation.
For engineers reviewing the LMV822DGKR datasheet, LMV822DGKR pinout, LMV822DGKR application, or LMV822DGKR equivalent, key selection criteria include its rail-to-rail output swing (4.85 V at 5 V supply into 2 kΩ), –40°C to 85°C operating range, MSOP-8 (DGK) package footprint, and compatibility with single-supply systems requiring low input offset voltage (1–4 mV) and high CMRR (72 dB).
Technical Context
The LMV822DGKR implements a complementary input stage enabling rail-to-rail output swing without crossover distortion, supporting operation down to 2.5 V supply while maintaining stable phase margin (64.2° at 5 V, RL = 600 Ω). Its input common-mode range extends to ground, allowing direct interfacing with single-ended sensors and ADC drivers.
It features low input bias current (30 nA max at 25°C), 42 nV/√Hz input voltage noise, and amplifier-to-amplifier isolation of 135 dB - critical for dual-channel signal paths where crosstalk must be minimized in mixed-signal PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.5 V to 5.5 V - supports direct integration into Li-ion (3.7 V nominal) and USB-powered (5 V) systems without LDO regulation. |
| Gain Bandwidth | 5.5 MHz typ at 5 V - enables stable closed-loop gain ≥10 at 500 kHz for anti-aliasing or active filter stages. |
| Slew Rate | 1.9 V/μs typ at 5 V - supports 10-bit DAC output buffering up to ~300 kHz full-scale transitions. |
| Input Offset Voltage | 1–4 mV over –40°C to 85°C - ensures ≤0.1% error in 12-bit sensor amplification with 2.5 V reference. |
| Output Swing | 0.1 V from rail (low) / 0.15 V from rail (high) at 5 V, 2 kΩ load - maximizes dynamic range in single-supply data acquisition. |
| Common-Mode Range | –0.2 V to 4.3 V at 5 V supply - accepts inputs below ground and up to near VCC+, simplifying level-shifting circuits. |
| Supply Current | 0.5 mA typ per amplifier at 5 V - allows dual-channel operation at <1 mA total, extending battery life in always-on monitoring nodes. |
Pinout & Package
LMV822DGKR is housed in an 8-pin MSOP (VSSOP) package (DGK), measuring 3.0 mm × 3.0 mm × 1.0 mm with 0.65 mm pitch - compatible with fine-pitch automated assembly and suitable for high-density portable PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output - drives loads up to 20 mA sourcing/sinking; rail-to-rail swing minimizes headroom loss. |
| 2 | IN− A | Inverting input of Amplifier A - high impedance (30 nA max bias) preserves source signal integrity. |
| 3 | IN+ A | Non-inverting input of Amplifier A - common-mode range includes ground, enabling single-supply transducer interfaces. |
| 4 | GND / VCC− | Ground reference and negative supply terminal - shared return path for both amplifiers; requires low-impedance local decoupling. |
| 5 | VCC+ | Positive supply input - accepts 2.5–5.5 V; PSRR >73 dB reduces sensitivity to supply ripple. |
| 6 | IN+ B | Non-inverting input of Amplifier B - electrically isolated from Channel A (135 dB crosstalk rejection). |
| 7 | IN− B | Inverting input of Amplifier B - matched input characteristics enable differential pair configurations. |
| 8 | OUT B | Amplifier B output - independently configurable; same drive capability and rail-to-rail performance as OUT A. |
Key Features
| Feature | Design Value |
|---|---|
| No Crossover Distortion | Eliminates switching artifacts in audio and precision analog outputs, ensuring clean zero-crossing behavior in unity-gain buffers. |
| Rail-to-Rail Output | Delivers >97% of full supply range at 2 kΩ load - critical for maximizing SNR in 12-bit+ ADC driver stages. |
| Low 2.5-V Performance | Operates fully specified at 2.5 V supply - enables direct interface with ultra-low-power microcontrollers and energy-harvesting PMICs. |
| High CMRR (72 dB) | Rejects common-mode noise from noisy digital domains, improving accuracy in mixed-signal sensor nodes. |
| Small DGK Package | 3.0 × 3.0 mm MSOP footprint saves >50% board area vs. SOIC-8 - essential for wearables and compact IoT endpoints. |
Applications
| Portable Sensor Signal Conditioning | Single-Supply ADC Driver |
|---|---|
Use Scenario: Amplifying low-level outputs from MEMS accelerometers or thermistor bridges in battery-powered health monitors. IC Role / Device Role / Timing Role: Dual-channel instrumentation amplifier front-end, with one channel for signal gain and the other for reference buffering. Use Value: Rail-to-rail output swing and ground-sensing inputs eliminate need for level-shifting circuitry, reducing component count and power consumption. | Use Scenario: Driving the input of a 12-bit SAR ADC in a handheld multimeter powered by two AA cells (3 V). IC Role / Device Role / Timing Role: Precision buffer isolating ADC input from source impedance variations and providing low-output-impedance drive. Use Value: 0.5 mA supply current per channel and 42 nV/√Hz noise ensure >70 dB SNR without compromising battery life. |
| Wearable Biopotential Front-End | Low-Voltage Active Filter |
Use Scenario: First-stage amplification of ECG/EMG signals in compact wearable patches using 3.3 V regulated supply. IC Role / Device Role / Timing Role: Dual op-amp configured as high-input-impedance differential preamp and right-leg drive (RLD) controller. Use Value: 135 dB amplifier isolation prevents coupling between sensing and RLD channels, improving common-mode rejection in dry-electrode designs. | Use Scenario: Implementing 2nd-order Sallen-Key low-pass filtering before audio codec inputs in Bluetooth earbuds. IC Role / Device Role / Timing Role: Dual op-amp used as unity-gain buffer + filter integrator, operating from 3.7 V battery with no LDO. Use Value: 5.5 MHz GBW supports filter cutoffs up to 200 kHz with <0.1 dB passband ripple, while rail-to-rail swing preserves full audio dynamic range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMV822DR | SOIC-8 package (4.9 × 6.0 mm); identical electrical specs; same –40°C to 85°C rating. | Requires larger PCB area; less suitable for ultra-compact designs but offers easier hand-soldering and thermal mass. | Select LMV822DR when manual assembly, thermal robustness, or legacy SOIC footprints are prioritized over size. |
| TLV2462IDGKR | Lower supply current (0.35 mA/ch), higher VIO (2–6 mV), wider temp range (–40°C to 125°C), same DGK package. | Better suited for extended-temperature industrial sensors; slightly reduced DC precision due to higher offset. | Choose TLV2462IDGKR when operating above 85°C or minimizing quiescent power is critical, accepting minor offset trade-off. |
Compared with LMV822DR, LMV822DGKR saves >60% board area while matching all key AC/DC specs; versus TLV2462IDGKR, it provides tighter input offset and higher slew rate at the cost of 0.15 mA higher supply current - favoring precision over ultra-low power.
Availability
LMV822DGKR is available at Aetrix Electronics and suitable for portable medical devices, battery-powered test equipment, and compact industrial sensors requiring stable component supply across long production lifecycles.
Supply support for LMV822DGKR 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 signal conditioning in space-constrained portable systems - emphasizing rail-to-rail output, wide supply range, and small-footprint packaging without sacrificing bandwidth or precision.
FAQ
What is the operating temperature range for LMV822DGKR?
The LMV822DGKR is characterized for operation from –40°C to +85°C. This range is confirmed in the official TI datasheet (SLOS434I, July 2006 revision) under Recommended Operating Conditions and applies specifically to the LMV822DGKR variant, not the higher-temp LMV822IDGKR (–40°C to 125°C). Thermal derating is not required within this envelope.
Does LMV822DGKR support true rail-to-rail input?
No, LMV822DGKR does not support rail-to-rail input. Its input common-mode voltage range is specified as –0.2 V to 4.3 V at 5 V supply (CMRR ≥50 dB), meaning the inputs operate down to 0.2 V below ground but only up to 0.7 V below VCC+. However, the output is rail-to-rail, swinging within 0.1 V of both rails under 2 kΩ load.
What is the maximum output current capability of LMV822DGKR?
LMV822DGKR delivers ±20 mA typical output current at 5 V supply (sourcing and sinking), with guaranteed minimums of ±15 mA over –40°C to 85°C. This is verified in the 5-V Electrical Characteristics table (page 9) under "Output current" with VO = 0 V (sourcing) and VO = 5 V (sinking) test conditions.
Can LMV822DGKR be used with a 2.5 V supply?
Yes, LMV822DGKR is fully specified for operation at 2.5 V supply, including gain bandwidth (3.5 MHz typ), slew rate (1.7 V/μs typ), and output swing (2.46 V high / 0.2 V low into 2 kΩ). These values are documented in the 2.5-V Electrical Characteristics section (page 4) and confirm functional compatibility with ultra-low-voltage systems.
Is LMV822DGKR pin-compatible with other dual op-amps in MSOP-8?
LMV822DGKR follows the industry-standard dual op-amp pinout in MSOP-8 (pin 1 = OUT A, pin 2 = IN− A, pin 3 = IN+ A, pin 4 = GND, pin 5 = VCC+, pin 6 = IN+ B, pin 7 = IN− B, pin 8 = OUT B), matching TLV2462, OPA2340, and MCP6022. However, electrical differences (e.g., bandwidth, offset) require validation for drop-in replacement in existing designs.
LMV822DGKR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LMV®
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- 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:
- 500µA
- 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:
- 8-VSSOP
LMV822DGKR FAQ
1.How can I place an order for LMV822DGKR through Aetrix?
Please submit a Request for Quotation (RFQ) for LMV822DGKR 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 LMV822DGKR reliable?
The price and inventory of LMV822DGKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV822DGKR is usually 5 days.
3.What payment methods are accepted for LMV822DGKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV822DGKR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMV822DGKR?
LMV822DGKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMV822DGKR 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 LMV822DGKR?
For technical support, including LMV822DGKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV822DGKR requirements.
6.How does Aetrix verify that LMV822DGKR is sourced from the original manufacturer or authorized distributors?
All LMV822DGKR 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 LMV822DGKR meets industry standards.
7.What is the process for return or replacement of LMV822DGKR?
All LMV822DGKR units undergo pre-shipment inspection (PSI). If there is an issue with LMV822DGKR, 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 LMV822DGKR part is unused and in its original packaging.
Return procedure for LMV822DGKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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