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STMicroelectronics LMV821AILT
- Part No.:
- LMV821AILT
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LMV821AILT.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:7,929
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Product details
Overview
LMV821AILT from STMicroelectronics is a single-channel, rail-to-rail output operational amplifier with shutdown functionality, designed for low-power, high-accuracy signal conditioning in automotive and portable systems. It delivers 5.5 MHz gain bandwidth, 0.8 mV max input offset voltage (at 25°C), 400 µA max supply current at 5 V, and operates from 2.5 V to 5.5 V across –40°C to +125°C. It is used in battery-powered sensor front-ends requiring stable DC precision and fast transient response.
For engineers reviewing the LMV821AILT datasheet, LMV821AILT pinout, LMV821AILT application, or LMV821AILT equivalent, key selection criteria include its shutdown-enabled ultra-low quiescent current (50 nA), rail-to-rail output swing into 2 kΩ, ±200 mV output headroom at full temperature range, and AEC-Q100 qualification for automotive signal chains.
Technical Context
The LMV821AILT integrates a precision input stage with CMOS input transistors enabling 0.5–30 nA input offset current and 70–90 dB common-mode rejection. Its internal architecture supports rail-to-rail output swing down to 150 mV from each supply rail under 2 kΩ load while maintaining phase stability with capacitive loads up to 200 pF.
Shutdown control is implemented via a dedicated SHDN pin that forces output into high-impedance state and reduces total supply current to ≤50 nA at 25°C. Turn-on/turn-off times are specified at 300 ns and 20 ns respectively, enabling rapid power cycling in duty-cycled sensor interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.5 V to 5.5 V - enables direct operation from single-cell Li-ion or regulated 3.3 V/5 V rails without level-shifting. |
| Gain Bandwidth Product | 5.5 MHz - supports closed-loop bandwidths >1 MHz in unity-gain buffer or active filter configurations. |
| Input Offset Voltage | 0.8 mV max at 25°C - ensures ≤0.5% error in 12-bit ADC front-end gain stages without trimming. |
| Quiescent Current | 400 µA max per channel at 5 V - extends battery life in always-on monitoring nodes (e.g., tire pressure sensors). |
| Shutdown Current | 50 nA max at 25°C - reduces system standby power by >99.9% versus active mode. |
| Output Swing | Rail-to-rail, within 150 mV of VCC+/VCC− into 2 kΩ - maximizes dynamic range for 3.3 V ADCs with 0–3.3 V input range. |
| Operating Temperature | –40°C to +125°C - validated for under-hood automotive locations and industrial edge sensors. |
Pinout & Package
LMV821AILT is packaged in SC70-5 (SOT323-5), a 1.25 mm × 1.65 mm surface-mount package with 0.65 mm pitch, optimized for space-constrained PCB layouts in portable and automotive modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN−) | Inverting input | Differential input node; accepts common-mode voltage from VCC− − 0.2 V to VCC+ − 1 V with no phase reversal. |
| 2 (IN+) | Non-inverting input | High-impedance input (IIB ≤ 120 nA) for precision sensing; supports DC-coupled sensor interfaces. |
| 3 (V−) | Negative supply | Ground reference for single-supply operation; tied to PCB ground plane for noise immunity. |
| 4 (SHDN) | Shutdown control | Active-low logic input; must be driven to V− to enter 50 nA shutdown mode; floating prohibited. |
| 5 (OUT) | Amplifier output | Rail-to-rail capable output; drives ≥26 mA sink/source at 5 V; high-Z in shutdown. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 qualified | Grade 1 (–40°C to +125°C) - certified for automotive powertrain and body electronics applications. |
| Rail-to-rail output | 150 mV headroom at 2 kΩ load - preserves full ADC input range in 3.3 V systems without level-shifting. |
| Low input offset drift | 1 µV/°C max - limits thermal-induced error to <100 µV over full temperature range. |
| ESD robustness | 4 kV HBM (non-SHDN pins), 3.5 kV HBM (SHDN pin) - withstands handling and board-level ESD events. |
| Stable with capacitive loads | Up to 200 pF - eliminates need for isolation resistors in ADC driver or filter applications. |
Applications
| Automotive Cabin Sensor Interface | Portable Medical Pulse Oximeter |
|---|---|
|
Use Scenario: Amplifying low-level analog signals from NTC thermistors and MEMS microphones in HVAC control modules. IC Role / Device Role / Timing Role: Precision DC-coupled gain stage with shutdown during sleep cycles to reduce module standby power. Use Value: 0.8 mV Vio and 1 µV/°C drift ensure <±0.5°C temperature accuracy across cabin operating range. |
Use Scenario: Front-end amplification of photodiode current in wearable pulse oximetry sensors. IC Role / Device Role / Timing Role: Transimpedance amplifier with rail-to-rail output driving 12-bit SAR ADC at 1 kSPS. Use Value: 5.5 MHz GBP enables stable 100 kHz bandwidth for accurate AC/DC pulse waveform capture. |
| Battery-Powered Industrial Data Logger | Smart Rearview Mirror Signal Conditioning |
|
Use Scenario: Buffering and scaling analog outputs from multi-sensor fusion boards in remote environmental monitors. IC Role / Device Role / Timing Role: Low-power unity-gain buffer isolating sensor outputs from long PCB traces and ADC input capacitance. Use Value: 400 µA IQ allows 10-year operation on CR2032 coin cell when paired with MCU-controlled shutdown. |
Use Scenario: Amplifying camera analog video signals and ambient light sensor outputs in ADAS-enabled mirrors. IC Role / Device Role / Timing Role: Dual-role amplifier: video driver (fast slew rate) and light-sensing conditioner (low noise, low drift). Use Value: 1.9 V/µs slew rate and 13 nV/√Hz noise at 10 kHz preserve image fidelity and lux measurement resolution. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TSV851ILT | Lower IQ (180 µA max), no shutdown, 1.5 MHz GBP, same SC70-5 package | Not suitable for duty-cycled systems requiring nanoamp standby; better for always-on ultra-low-power apps | Select when shutdown is unnecessary and bandwidth demand is ≤1.5 MHz. |
| LMV321IDBVR | No shutdown, 1 MHz GBP, 7 mV Vio max, SOT23-5, non-automotive grade | Lacks AEC-Q100 qualification and rail-to-rail output swing; higher offset limits DC accuracy | Select only for cost-sensitive consumer-grade designs where temperature range and precision are secondary. |
Compared with TSV851ILT and LMV321IDBVR, LMV821AILT uniquely combines automotive qualification, shutdown capability, 5.5 MHz bandwidth, and sub-millivolt offset-making it the sole choice for high-reliability, battery-conscious automotive and industrial signal chains requiring both precision and power gating.
Availability
LMV821AILT is available at Aetrix Electronics and suitable for automotive signal conditioning, portable medical instrumentation, and battery-powered data loggers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LMV821AILT 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, specializing in automotive, industrial, and power management ICs with strong analog and mixed-signal design heritage.
The LMV82x series belongs to ST's precision low-power op-amp product line, engineered specifically for automotive-grade signal conditioning where accuracy, reliability, and ultra-low power consumption must coexist in harsh environments.
FAQ
What is the maximum capacitive load the LMV821AILT can drive stably?
The LMV821AILT maintains phase margin ≥60° with capacitive loads up to 200 pF when configured as a unity-gain follower with RL = 10 kΩ, as verified in Figure 13 of the datasheet. For loads >100 pF, layout best practices (short traces, local decoupling) are required to avoid peaking or oscillation.
Does the SHDN pin require external pull-up or pull-down resistors?
No external resistors are needed if the SHDN pin is actively driven by a microcontroller GPIO. However, if left unconnected during MCU reset, it must be pulled to V− via a 100 kΩ resistor to guarantee shutdown state and prevent undefined output behavior.
How does the input common-mode range affect single-supply sensor interfacing?
The LMV821AILT supports input voltages from V− − 0.2 V to V+ − 1 V, enabling direct connection of grounded-sensor outputs (e.g., thermocouples, bridge sensors) without level-shifting circuitry, while avoiding output phase reversal even near ground.
Is the LMV821AILT pin-compatible with the LMV321 in SC70-5 packages?
No - LMV321IDBVR uses standard SOT23-5 pinout (IN+, IN−, V−, OUT, V+), whereas LMV821AILT uses SC70-5 pinout (IN−, IN+, V−, SHDN, OUT). The SHDN pin replaces V+; direct replacement requires PCB redesign and firmware adaptation for shutdown control.
LMV821AILT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- 60 nA
- Voltage - Input Offset:
- 800 µV
- Current - Supply:
- 300µA
- Current - Output / Channel:
- 70 mA
- 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:
- SOT-23-5
LMV821AILT FAQ
1.How can I place an order for LMV821AILT through Aetrix?
Please submit a Request for Quotation (RFQ) for LMV821AILT 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 LMV821AILT reliable?
The price and inventory of LMV821AILT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV821AILT is usually 5 days.
3.What payment methods are accepted for LMV821AILT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV821AILT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMV821AILT?
LMV821AILT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMV821AILT 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 LMV821AILT?
For technical support, including LMV821AILT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV821AILT requirements.
6.How does Aetrix verify that LMV821AILT is sourced from the original manufacturer or authorized distributors?
All LMV821AILT 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 LMV821AILT meets industry standards.
7.What is the process for return or replacement of LMV821AILT?
All LMV821AILT units undergo pre-shipment inspection (PSI). If there is an issue with LMV821AILT, 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 LMV821AILT part is unused and in its original packaging.
Return procedure for LMV821AILT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LMV821AILT Tags
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