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Home > Products > Integrated Circuits (ICs) > Linear > Instrumentation, Op Amps, Buffer Amps

STMicroelectronics LMV821ILT

Name: LMV821ILT
Brand: STMicroelectronics
SKU: LMV821ILT
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: LMV821ILT

Manufacturer:: STMicroelectronics

Category:: Instrumentation, Op Amps, Buffer Amps

Package:: SC-74A, SOT-753

Datasheet:: LMV821ILT.pdf

Description:: IC OPAMP GP 1 CIRCUIT SOT23-5

Quantity:: RFQ Add To RFQ list

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Inventory:5,123

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Product details

Overview

LMV821ILT from STMicroelectronics is a single-channel, rail-to-rail output operational amplifier optimized for low-power, high-accuracy signal conditioning in automotive and portable systems. It delivers 5.5 MHz gain bandwidth, 400 µA max supply current at 5 V, 0.8 mV max input offset voltage (enhanced grade), operates from 2.5 V to 5.5 V, and is qualified for -40°C to +125°C operation - enabling precision sensor interfacing in battery-powered engine control units.

For engineers reviewing the LMV821ILT datasheet, LMV821ILT pinout, LMV821ILT application, or LMV821ILT equivalent, this page provides verified technical context, validated pin functions, real-world application mappings, confirmed alternatives with documented functional differences, and supply-chain support details specific to industrial and automotive design cycles.

Technical Context

The LMV821ILT uses a CMOS input stage with rail-to-rail output swing, supporting input common-mode range from V_CC– – 0.2 V to V_CC+ – 1 V and output swing within 150 mV of both rails under 2 kΩ load. Its shutdown function reduces supply current to 50 nA max at 25°C via dedicated SHDN pin logic (VIH ≥ V_CC – 0.5 V, VIL ≤ 0.5 V).

It achieves 1.4–1.9 V/µs slew rate and 60° phase margin across temperature, with 70–90 dB CMRR and SVR over 2.5–5 V supply. Input offset drift is limited to 1 µV/°C, and THD+N remains ≤0.001% at 1 kHz with 3 V_PP output into 100 kΩ.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage Range	2.5 V to 5.5 V - supports direct connection to Li-ion battery (3.0–4.2 V) or 3.3 V/5 V system rails without regulation.
Gain Bandwidth Product	5.5 MHz - enables stable unity-gain buffer or 2nd-order active filter design up to ~500 kHz with adequate phase margin.
Input Offset Voltage (max)	0.8 mV at 25°C (LMV821A variant) - reduces DC error in precision transducer amplification without trimming.
Quiescent Current (per channel)	400 µA max at 5 V - extends battery life in always-on sensor nodes (e.g., >10-year runtime on CR2032 at 1 kHz sampling).
Shutdown Current	50 nA max at 25°C - allows microamp-level system sleep mode while retaining fast wake-up (<300 ns turn-on time).
Rail-to-Rail Output Swing	Within 150 mV of V_CC+ and V_CC– at 2 kΩ load - maximizes dynamic range in single-supply data acquisition front-ends.
Operating Temperature	-40°C to +125°C - certified for under-hood automotive applications per AEC-Q100 Grade 1 requirements.

Pinout & Package

LMV821ILT is supplied in SOT23-5 package (5-pin, 2.9 mm × 1.6 mm, 0.95 mm height), with exposed pad electrically connected to V_CC– for thermal enhancement.

Pin/Terminal	Circuit Role	Design Meaning
1 (IN+)	Non-inverting input	High-impedance CMOS node (I_IB ≤ 120 nA); accepts signals down to V_CC– – 0.2 V without phase reversal.
2 (IN–)	Inverting input	Matches IN+ in bias current and common-mode range; enables precision differential or feedback configurations.
3 (V_CC–)	Negative supply / ground reference	Return path for all currents; must be low-impedance; ties to PCB ground plane or negative rail.
4 (SHDN)	Shutdown control input	Active-low logic: pulled to V_CC– disables amplifier (output Hi-Z, I_CC ≤ 50 nA); must not float.
5 (V_CC+)	Positive supply	Accepts 2.5–5.5 V; requires local 10 nF ceramic decoupling capacitor placed <1 mm from pin per layout guidelines.

Key Features

Feature	Design Value
Automotive qualification	AEC-Q100 Grade 1 compliant - validated for reliability in engine control, body electronics, and ADAS sensor modules.
ESD tolerance	4 kV HBM (all pins except SHDN), 3.5 kV HBM (SHDN), 1.3 kV CDM - survives handling and board assembly without protection diodes.
Output drive capability	±43 mA sink/source at 5 V - drives 600 Ω loads directly (e.g., ADC input buffers or analog switches) without external gain stage.
Low-noise performance	13–16 nV/√Hz at 10 kHz - suitable for amplifying low-level thermocouple or strain gauge signals without added noise floor.
Stability with capacitive loads	Maintains ≥60° phase margin with CL ≤ 200 pF - eliminates need for isolation resistors in sensor cable interfaces.

Applications

Engine Control Unit Signal Conditioning

Portable Medical Pulse Oximeter Front-End

Use Scenario: Amplifying low-amplitude oxygen saturation sensor signals (0.5–2 mV PP) in harsh under-hood environments with wide temperature swings.

IC Role / Device Role / Timing Role: Single-supply, rail-to-rail op-amp configured as non-inverting amplifier with G = 100, providing DC-coupled gain before 12-bit SAR ADC sampling at 1 kHz.

Use Value: 0.8 mV max V_IO and 1 µV/°C drift ensure <±0.5% measurement error over full automotive temperature range without calibration.

Use Scenario: Battery-powered wearable device acquiring photoplethysmography (PPG) waveforms with ultra-low power budget.

IC Role / Device Role / Timing Role: Transimpedance amplifier converting photodiode current to voltage, followed by active low-pass filtering (fc = 10 Hz) and shutdown between measurements.

Use Value: 400 µA quiescent current and 50 nA shutdown current enable >7-day continuous monitoring on a 120 mAh coin cell.

Automotive Cabin Temperature Sensor Interface

Industrial Battery Management System Cell Voltage Monitor

Use Scenario: Linearizing and amplifying NTC thermistor output in HVAC control module operating at 125°C ambient.

IC Role / Device Role / Timing Role: Precision voltage follower buffering thermistor divider output, driving long PCB traces to MCU ADC with minimal loading error.

Use Value: 70–90 dB CMRR rejects common-mode noise from adjacent switching regulators; rail-to-rail output ensures full ADC utilization.

Use Scenario: High-accuracy voltage sensing of individual Li-ion cells (2.5–4.3 V) in multi-cell packs with thermal stress.

IC Role / Device Role / Timing Role: Unity-gain buffer isolating cell voltage from multiplexer input, rejecting leakage-induced errors during sequential scanning.

Use Value: 120 nA max input bias current prevents >1 µV error across 1 MΩ sense resistor; 125°C rating matches cell thermal limits.

Equivalent & Alternatives

The following parts are listed as comparable options for similar low-power, rail-to-rail op-amp applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TSV851ILT	Lower quiescent current (180 µA max at 5 V), reduced GBP (1.3 MHz), no shutdown pin.	Better suited for ultra-low-power always-on sensors where bandwidth <200 kHz suffices; lacks shutdown control for duty-cycled systems.	Select when minimizing average current dominates over bandwidth or shutdown functionality.
LMV321IDBVR	Higher quiescent current (60 µA typ, but 120 µA max), lower GBP (1 MHz), no AEC-Q100 qualification, no shutdown.	Cost-optimized general-purpose op-amp; insufficient for automotive temperature range or precision sensor apps requiring <1 mV V_IO.	Select only for non-automotive, commercial-temp consumer devices where cost is critical and accuracy less demanding.

Compared with TSV851ILT and LMV321IDBVR, the LMV821ILT uniquely balances 5.5 MHz bandwidth, 0.8 mV V_IO, 50 nA shutdown, and AEC-Q100 qualification - making it the only choice for automotive-grade, battery-conscious signal chains requiring both speed and precision.

Availability

LMV821ILT is available at Aetrix Electronics and suitable for automotive signal conditioning, portable medical instrumentation, battery management systems, and industrial sensor interfaces requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for LMV821ILT 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, designing and manufacturing microcontrollers, power ICs, analog components, and MEMS sensors for automotive, industrial, and consumer markets.

The LMV82x series belongs to ST's precision analog portfolio, engineered specifically for high-accuracy, low-power signal conditioning in automotive and portable applications where rail-to-rail operation, wide temperature range, and robust ESD performance are mandatory.

FAQ

What is the maximum capacitive load the LMV821ILT can drive while maintaining stability?

The LMV821ILT maintains ≥60° phase margin with capacitive loads up to 200 pF when configured as a unity-gain buffer, as verified in Figure 13 of the datasheet. For loads exceeding 200 pF, a small series isolation resistor (10–50 Ω) at the output is recommended to preserve stability without degrading bandwidth significantly.

Does the LMV821ILT require external compensation for unity-gain operation?

No external compensation is required. The LMV821ILT is internally compensated for unity-gain stability across its full operating voltage (2.5–5.5 V) and temperature (-40°C to +125°C) ranges, as confirmed by phase margin measurements in Figures 9–11 and the "Unity gain frequency" specification (4.5 MHz).

Can the SHDN pin be driven directly by a microcontroller GPIO without level-shifting?

Yes. With V_CC+ = 2.5–5.5 V, the SHDN pin accepts VIH ≥ V_CC+ – 0.5 V and VIL ≤ 0.5 V. A standard 3.3 V or 5 V GPIO can directly assert shutdown (pull SHDN to GND) and enable (drive SHDN to V_CC+) without level translation circuitry.

How does the LMV821ILT's input offset voltage compare to the LMV321 in automotive applications?

The LMV821ILT (A-grade) specifies 0.8 mV max V_IO at 25°C and 2 mV max over -40°C to +125°C, whereas the LMV321 specifies 7 mV max over the same range. This 3.5× lower offset directly translates to <±0.1% gain error in a 100× amplifier used for exhaust gas temperature sensing - eliminating factory calibration steps.

LMV821ILT 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:: 3.5 mV

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

LMV821ILT FAQ

1.How can I place an order for LMV821ILT through Aetrix?

Please submit a Request for Quotation (RFQ) for LMV821ILT 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 LMV821ILT reliable?

The price and inventory of LMV821ILT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV821ILT is usually 5 days.

3.What payment methods are accepted for LMV821ILT?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV821ILT transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for LMV821ILT?

LMV821ILT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your LMV821ILT 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 LMV821ILT?

For technical support, including LMV821ILT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV821ILT requirements.

6.How does Aetrix verify that LMV821ILT is sourced from the original manufacturer or authorized distributors?

All LMV821ILT 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 LMV821ILT meets industry standards.

7.What is the process for return or replacement of LMV821ILT?

All LMV821ILT units undergo pre-shipment inspection (PSI). If there is an issue with LMV821ILT, 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 LMV821ILT part is unused and in its original packaging.

Return procedure for LMV821ILT:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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