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Texas Instruments LMV821M5
- Part No.:
- LMV821M5
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LMV821M5.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,026
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Product details
Overview
LMV821M5 from Texas Instruments is a single, rail-to-rail output (RRO), low-voltage operational amplifier optimized for battery-powered portable electronics. It delivers 5 MHz gain-bandwidth product at 2.7 V supply, 1.4 V/µs slew rate, 3.5 mV max input offset voltage, and consumes only 220 µA per amplifier - enabling precision signal conditioning in space-constrained, low-power systems such as cellular phone audio stages and laptop sensor interfaces.
For engineers reviewing the LMV821M5 datasheet, LMV821M5 pinout, LMV821M5 application, or LMV821M5 equivalent, key selection criteria include its SC70-5 package footprint (2.0 × 1.25 mm), guaranteed RRO swing within 160 mV of rails into 600 Ω, operation down to 2.5 V supply, and AEC-Q100 qualification readiness - all critical for compact, single-supply analog front-ends in consumer and industrial edge devices.
Technical Context
The LMV821M5 employs a CMOS input stage with rail-to-rail output architecture, supporting true single-supply operation from 2.5 V to 5.5 V. Its input common-mode range extends to ground (–0.3 V at 5 V supply), and it maintains stable unity-gain performance with capacitive loads up to several hundred picofarads - eliminating need for external isolation resistors in driving ADC inputs or capacitive sensors.
Internally compensated for unity-gain stability, the device achieves 67° phase margin at 5 V with 2 kΩ load and exhibits 135 dB amp-to-amp isolation in dual/quad variants - confirming robust channel separation essential for multi-channel portable instrumentation where crosstalk must be minimized.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.5 V to 5.5 V - supports direct connection to Li-ion cell (3.0–4.2 V) or regulated 3.3 V/2.5 V rails without level-shifting. |
| Gain-Bandwidth Product | 5 MHz at 2.7 V - enables stable closed-loop gain ≥10 at 500 kHz for anti-aliasing or active filtering in audio and sensor signal chains. |
| Slew Rate | 1.4 V/µs min at 5 V - sufficient for 100 kHz full-scale sine output at 2 Vpp without distortion in portable audio line drivers. |
| Input Offset Voltage | 3.5 mV max - ensures ≤0.7% error in 0.5 V full-scale sensor amplification (e.g., thermistor or bridge outputs). |
| Rail-to-Rail Output | Swings to within 160 mV of rails into 600 Ω - preserves >93% dynamic range at 3.3 V supply when driving low-impedance loads like codec inputs. |
| Quiescent Current | 220 µA typical at 2.7 V - allows integration into always-on sensor nodes with <1 µA sleep current budget when powered via enable control. |
| CMRR / PSRR | 90 dB / 85 dB - rejects power supply ripple and common-mode noise in noisy mixed-signal PCB environments (e.g., near RF sections or switching regulators). |
Pinout & Package
LMV821M5 is packaged in SC70-5 (DCK), measuring 2.0 mm × 1.25 mm × 0.95 mm - approximately half the area of SOT23-5 - enabling ultra-dense layout in handheld PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Amplifier output | Delivers rail-to-rail voltage swing; requires no pull-up/down for single-supply biasing. |
| 2 (−IN) | Inverting input | High-impedance CMOS node; accepts signals from 0 V to V+ − 0.2 V with minimal bias current (≤100 nA). |
| 3 (V−) | Negative supply | Ground reference in single-supply mode; must be connected directly to PCB ground plane for noise immunity. |
| 4 (+IN) | Non-inverting input | Accepts input common-mode down to ground; enables direct interfacing with grounded sensors or DAC outputs. |
| 5 (V+) | Positive supply | Accepts 2.5–5.5 V; decoupling capacitor (100 nF) required within 2 mm for stable high-frequency operation. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Enables maximum signal utilization in low-voltage systems: 4.84 V output at 5 V supply into 2 kΩ, preserving >96% dynamic range. |
| Low input offset drift | 1 µV/°C TCVOS ensures <10 µV total offset shift across –40°C to +85°C - critical for uncalibrated temperature or pressure sensing. |
| Stable with capacitive loads | Operates without oscillation into ≥100 pF loads - simplifies interface to ADC sample-and-hold inputs or long PCB traces without added series resistance. |
| Small SC70-5 footprint | 2.0 × 1.25 mm body size reduces board area by 50% vs. SOT23-5 - ideal for space-limited modules like Bluetooth earbud PCBs. |
| Wide supply range | 2.5 V minimum operation supports direct use with coin-cell batteries (e.g., CR2032 nominal 3 V) or energy-harvesting sources without LDO pre-regulation. |
Applications
| Cellular Phone Audio Amplifier | Laptop Ambient Light Sensor Interface |
|---|---|
Use Scenario: Amplifying weak photodiode current from ambient light sensor before ADC sampling in clamshell laptop lid. IC Role / Device Role / Timing Role: Single-supply transimpedance amplifier with rail-to-rail output, referenced to 3.3 V system rail. Use Value: 220 µA quiescent current minimizes impact on battery life during continuous light monitoring; 3.5 mV VOS avoids calibration overhead in factory firmware. | Use Scenario: Buffering and level-shifting output of a 2.5 V-output temperature-compensated crystal oscillator (TCXO) to 3.3 V logic interface. IC Role / Device Role / Timing Role: Low-noise, unity-gain buffer isolating TCXO from load variations while maintaining timing integrity. Use Value: 24 nV/√Hz input voltage noise prevents jitter degradation; 135 dB amp-to-amp isolation prevents coupling into adjacent clock domains. |
| Portable Medical Pulse Oximeter Front-End | Industrial Handheld Data Logger Signal Conditioning |
Use Scenario: Amplifying red/infrared LED photodiode signals in battery-operated pulse oximeter wristband. IC Role / Device Role / Timing Role: Precision, low-power transimpedance amplifier with DC-coupled input and rail-to-rail output driving SAR ADC. Use Value: 5 MHz GBW supports >200 kHz bandwidth for artifact rejection; operation down to 2.5 V extends usable battery range from 3.6 V to 2.7 V. | Use Scenario: Conditioning 4–20 mA loop sensor outputs in ruggedized handheld test equipment operating from rechargeable LiPo pack. IC Role / Device Role / Timing Role: Low-drift, single-supply instrumentation amplifier stage with programmable gain and output clamping. Use Value: 1 µV/°C TCVOS eliminates thermal recalibration during field use; ±2000 V HBM ESD rating withstands handling in industrial environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2461IDBVR | Higher 6.4 MHz GBW but 550 µA IS; larger SOT23-5 package (2.92 × 1.60 mm) | Better AC performance at cost of 2.5× higher supply current; less suitable for sub-1 mA battery budgets | Select TLV2461IDBVR only when >5.5 MHz bandwidth or lower VOS (2 mV max) is required and board area permits larger footprint. |
| MCP6001T-E/OT | Lower 1 MHz GBW, 100 µA IS, same SC70-5 package; 2.5 V min supply | Optimized for ultra-low power, not speed - insufficient for >100 kHz sensor signal chains requiring 5 MHz GBW | Choose MCP6001T-E/OT only for always-on wake-up comparators or DC-coupled sensor buffers where bandwidth <200 kHz suffices. |
Compared with TLV2461IDBVR and MCP6001T-E/OT, LMV821M5 uniquely balances 5 MHz bandwidth, 220 µA quiescent current, and SC70-5 size - making it the optimal choice for portable systems needing both speed and battery longevity without sacrificing PCB real estate.
Availability
LMV821M5 is available at Aetrix Electronics and suitable for cellular phone audio stages, laptop sensor interfaces, portable medical front-ends, industrial data loggers, and handheld test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LMV821M5 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 company specializing in analog and embedded processing technologies, with leadership in precision amplifiers, power management, and signal chain solutions.
The LMV821M5 belongs to TI's LMV82x low-voltage, low-power op-amp family, designed specifically for portable, battery-operated systems demanding rail-to-rail performance, small footprint, and guaranteed operation down to 2.5 V supply.
FAQ
What is the maximum operating temperature range for the LMV821M5?
The LMV821M5 is specified for operation from –40°C to +85°C. While automotive-grade variants (e.g., LMV822-Q1) extend to +125°C, the LMV821M5 itself is rated for industrial temperature range only. This makes it suitable for consumer electronics and non-automotive industrial applications where ambient temperatures remain below 85°C.
Does the LMV821M5 support true single-supply operation with input down to ground?
Yes, the LMV821M5 supports true single-supply operation with input common-mode voltage range extending to ground (–0.3 V at 5 V supply). Its CMOS input stage allows direct interfacing with grounded sensors, DAC outputs, or other 0 V–referenced signal sources without level-shifting circuitry - a key enabler for simplified analog front-end design in portable systems.
What is the output drive capability of the LMV821M5 into 600 Ω loads?
The LMV821M5 delivers rail-to-rail output swing within 160 mV of each rail into 600 Ω at 2.7 V supply, and within 250 mV at 5 V supply. It can source/sink up to 16 mA (typical) under these conditions, enabling direct driving of low-impedance codec inputs, analog switches, or small-signal transducers without external buffering.
Is the LMV821M5 pin-compatible with other members of the LMV82x family?
No - the LMV821M5 (SC70-5) is not pin-compatible with LMV822 (8-pin SOIC/VSSOP) or LMV824 (14-pin SOIC/TSSOP). Pin compatibility exists only within same-package variants (e.g., LMV821-N in SOT23-5 shares pinout with LMV821M5 in SC70-5). Always verify package-specific pin configuration before PCB layout.
How does the LMV821M5 handle capacitive loads, and is external compensation required?
The LMV821M5 is internally compensated and stable with capacitive loads up to at least 100 pF, as confirmed by phase margin measurements in the datasheet. No external compensation or isolation resistor is required when driving typical ADC input capacitances (10–20 pF) or short PCB traces - simplifying layout and reducing BOM count in sensor interface designs.
LMV821M5 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:
- 2V/µs
- Gain Bandwidth Product:
- 5.6 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 100 nA
- Voltage - Input Offset:
- 3.5 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
LMV821M5 FAQ
1.How can I place an order for LMV821M5 through Aetrix?
Please submit a Request for Quotation (RFQ) for LMV821M5 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 LMV821M5 reliable?
The price and inventory of LMV821M5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV821M5 is usually 5 days.
3.What payment methods are accepted for LMV821M5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV821M5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMV821M5?
LMV821M5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMV821M5 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 LMV821M5?
For technical support, including LMV821M5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV821M5 requirements.
6.How does Aetrix verify that LMV821M5 is sourced from the original manufacturer or authorized distributors?
All LMV821M5 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 LMV821M5 meets industry standards.
7.What is the process for return or replacement of LMV821M5?
All LMV821M5 units undergo pre-shipment inspection (PSI). If there is an issue with LMV821M5, 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 LMV821M5 part is unused and in its original packaging.
Return procedure for LMV821M5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LMV821M5 Tags
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