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

STMicroelectronics LMV821AIYLT

Name: LMV821AIYLT
Brand: STMicroelectronics
SKU: LMV821AIYLT
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: LMV821AIYLT

Manufacturer:: STMicroelectronics

Category:: Instrumentation, Op Amps, Buffer Amps

Package:: SC-74A, SOT-753

Datasheet:: LMV821AIYLT.pdf

Description:: IC OPAMP GP 1 CIRCUIT SOT23-5

Quantity:: RFQ Add To RFQ list

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Inventory:2,000

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Product details

Overview

LMV821AIYLT from STMicroelectronics is a single-channel, rail-to-rail output, low-power operational amplifier with shutdown capability, designed for precision signal conditioning in space-constrained 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 across –40°C to +125°C - enabling high-accuracy sensor front-ends in battery-powered engine control units.

For engineers reviewing the LMV821AIYLT datasheet, LMV821AIYLT pinout, LMV821AIYLT application, or LMV821AIYLT equivalent, key selection criteria include shutdown current (≤50 nA), rail-to-rail output swing under 2 kΩ load (≤200 mV from rails), input offset drift (1 µV/°C), and AEC-Q100 qualification for automotive use.

Technical Context

The LMV821AIYLT implements a CMOS input stage with rail-to-rail output stage, supporting operation from 2.5 V to 5.5 V supply. Its input common-mode range extends from V_CC– – 0.2 V to V_CC+ – 1 V, ensuring ground-sensing capability without phase reversal. The internal shutdown logic disables the amplifier core when the SHDN pin is pulled to V_CC–, reducing supply current to ≤50 nA at 25°C.

It features a unity-gain stable architecture with 60° phase margin and 10 dB gain margin at 5 V, delivering 1.4–1.9 V/µs slew rate and 0.001% THD+N at 1 kHz. Input-referred noise is 13–16 nV/√Hz at 10 kHz, and CMRR is ≥72 dB at 25°C - optimized for low-noise, high-PSRR analog signal chains in harsh environments.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage Range	2.5 V to 5.5 V - supports direct Li-ion battery (3.0–4.2 V) and 3.3 V/5 V system rails without level shifting.
Gain Bandwidth Product	5.5 MHz - enables stable closed-loop gain up to ~10× at 500 kHz for active filter or sensor amplification stages.
Input Offset Voltage	0.8 mV max at 25°C - reduces DC error in precision transducer interfaces without trimming.
Shutdown Current	50 nA max at 25°C - extends battery life in intermittent-sampling applications like tire pressure sensors.
Rail-to-Rail Output Swing	≤200 mV from rails into 2 kΩ - maximizes dynamic range in low-voltage ADC driver configurations.
Operating Temperature	–40°C to +125°C - qualified per AEC-Q100 Grade 1, suitable for under-hood automotive signal conditioning.
Input Bias Current	60–120 nA typ - minimizes voltage error across high-impedance source networks (e.g., thermistor bridges).

Pinout & Package

SOT23-5 package (5-pin, 2.9 mm × 1.6 mm × 1.1 mm body, 0.95 mm pitch), thermally enhanced with exposed pad connected to V_CC– for improved power dissipation in automotive ambient.

Pin/Terminal	Circuit Role	Design Meaning
1 (IN+)	Non-inverting input	High-impedance CMOS node; accepts signals down to V_CC– – 0.2 V for ground-referenced sensor outputs.
2 (IN−)	Inverting input	Differential input pair node; matched to IN+ for <1 µV/°C offset drift over temperature.
3 (V_CC–)	Negative supply	Ground reference for single-supply operation; connects to PCB ground plane and exposed thermal pad.
4 (SHDN)	Shutdown control	CMOS-compatible logic input; must be tied to V_CC+ (enable) or V_CC– (disable); floating prohibited.
5 (OUT)	Amplifier output	Rail-to-rail capable stage; drives 2 kΩ load to within 200 mV of V_CC+/V_CC–; high-Z in shutdown mode.

Key Features

Feature	Design Value
Automotive qualification	AEC-Q100 Grade 1 qualified - validated for reliability in engine control, body electronics, and ADAS subsystems.
Low-power shutdown	50 nA max ICC in shutdown - enables microamp-level system sleep modes without external power gating.
Rail-to-rail output	200 mV max saturation voltage into 2 kΩ - preserves >95% of full-scale ADC range at 3.3 V supply.
Extended temperature range	–40°C to +125°C operation - maintains 0.8 mV offset and 5.5 MHz GBP across full automotive ambient range.
High ESD tolerance	4 kV HBM (non-SHDN pins), 3.5 kV HBM (SHDN pin) - withstands assembly handling and in-vehicle electrostatic events.

Applications

Engine Coolant Temperature Sensing

Portable ECG Front-End

Use Scenario: Amplifying low-level resistance changes from NTC thermistors in engine coolant loops.

IC Role / Device Role / Timing Role: Precision non-inverting amplifier with 10× gain, configured for ratiometric measurement against 3.3 V reference.

Use Value: 0.8 mV offset ensures <±0.5°C measurement error over –40°C to +125°C without calibration; shutdown cuts quiescent current during idle cycles.

Use Scenario: Buffering and filtering biopotential signals from dry electrodes in handheld ECG monitors.

IC Role / Device Role / Timing Role: Rail-to-rail input/output buffer driving 10 kΩ ADC input with 22 kHz bandwidth.

Use Value: 13 nV/√Hz noise at 10 kHz and 0.001% THD+N preserve diagnostic waveform fidelity; 400 µA supply enables >72-hour battery life on coin cell.

Automotive Cabin Air Quality Sensor

Industrial Battery Management Cell Monitor

Use Scenario: Conditioning ppm-level analog outputs from MEMS-based CO₂ and VOC sensors in HVAC modules.

IC Role / Device Role / Timing Role: Active 2nd-order low-pass filter (fc = 10 Hz) with gain = 1, rejecting switching noise from nearby DC-DC converters.

Use Value: 72 dB CMRR rejects common-mode ripple from 5 V rail; 1 µV/°C offset drift prevents false alarms due to cabin temperature swings.

Use Scenario: Isolating and scaling voltage from individual Li-ion cells (2.5–4.2 V) for coulomb counting in BMS ICs.

IC Role / Device Role / Timing Role: High-impedance differential amplifier (G = 0.1) referenced to isolated ground, operating at 3.3 V.

Use Value: 60 nA input bias current avoids loading high-resistance cell voltage dividers; 5.5 MHz GBP ensures fast transient response during charge/discharge transitions.

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
TSV851ICT	Lower supply current (180 µA max at 5 V), but reduced GBP (1.3 MHz) and no shutdown function.	Lacks shutdown mode; unsuitable for duty-cycled sensor nodes requiring nanoamp sleep current.	Select when ultra-low static power dominates over bandwidth and shutdown control.
LMV821IDBVR	Same electrical specs but in SOT23-6 package with separate V_CC+/V_CC– pins (no integrated ground tie); identical performance.	Requires different PCB layout; not pin-compatible due to extra V_CC+ pin and relocated ground.	Choose only if board redesign accommodates 6-pin footprint and separate positive rail routing.

Compared with TSV851ICT, LMV821AIYLT trades 220 µA higher active current for 4.2 MHz more bandwidth and essential shutdown control; versus LMV821IDBVR, it offers identical performance in a smaller 5-pin SOT23 footprint with simplified grounding.

Availability

LMV821AIYLT is available at Aetrix Electronics and suitable for automotive signal conditioning, portable medical instrumentation, and battery-powered industrial sensing requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for LMV821AIYLT 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 analog, MCU, power, and sensor solutions 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-grade and battery-sensitive applications where rail-to-rail operation and AEC-Q100 compliance are mandatory.

FAQ

What is the maximum allowable supply voltage for LMV821AIYLT?

The absolute maximum supply voltage is 6 V, but the recommended operating range is strictly 2.5 V to 5.5 V per datasheet Table 3. Operation above 5.5 V risks permanent damage to the input stage and violates guaranteed specifications - even brief transients exceeding 6 V require external clamping diodes.

Can the SHDN pin be left unconnected during normal operation?

No - the SHDN pin must never be left floating. It must be actively driven to V_CC+ (to enable) or V_CC– (to disable) using a pull-up/pull-down resistor or microcontroller GPIO. Floating SHDN causes undefined output state and may increase supply current unpredictably due to CMOS input leakage.

Does LMV821AIYLT support true rail-to-rail input?

No - it supports rail-to-rail *output* swing, but the input common-mode range is V_CC– – 0.2 V to V_CC+ – 1 V. While it accepts inputs down to 0.2 V below ground (enabling true ground-sensing), it cannot accept signals within 1 V of V_CC+, unlike full rail-to-rail input amplifiers.

Is the exposed pad on the SOT23-5 package electrically connected?

Yes - the exposed pad is internally connected to V_CC– (pin 3) and must be soldered to a PCB copper pour tied to the same ground net. This connection improves thermal dissipation (R_thJA = 250°C/W vs. 205°C/W with pad) and reduces junction temperature by up to 15°C at 400 µA load in +85°C ambient.

LMV821AIYLT 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:: Automotive

Qualification:: AEC-Q100

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-23-5

LMV821AIYLT FAQ

1.How can I place an order for LMV821AIYLT through Aetrix?

Please submit a Request for Quotation (RFQ) for LMV821AIYLT 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 LMV821AIYLT reliable?

The price and inventory of LMV821AIYLT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV821AIYLT is usually 5 days.

3.What payment methods are accepted for LMV821AIYLT?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV821AIYLT transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for LMV821AIYLT?

LMV821AIYLT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your LMV821AIYLT 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 LMV821AIYLT?

For technical support, including LMV821AIYLT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV821AIYLT requirements.

6.How does Aetrix verify that LMV821AIYLT is sourced from the original manufacturer or authorized distributors?

All LMV821AIYLT 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 LMV821AIYLT meets industry standards.

7.What is the process for return or replacement of LMV821AIYLT?

All LMV821AIYLT units undergo pre-shipment inspection (PSI). If there is an issue with LMV821AIYLT, 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 LMV821AIYLT part is unused and in its original packaging.

Return procedure for LMV821AIYLT:

1.Submit a request within 90 days.

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

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