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

STMicroelectronics LMV324IYDT

Name: LMV324IYDT
Brand: STMicroelectronics
SKU: LMV324IYDT
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: LMV324IYDT

Manufacturer:: STMicroelectronics

Category:: Instrumentation, Op Amps, Buffer Amps

Package:: 14-SOIC (0.154", 3.90mm Width)

Datasheet:: LMV324IYDT.pdf

Description:: IC OPAMP GP 4 CIRCUIT 14SO

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Product details

Overview

LMV324IYDT from STMicroelectronics is a quad rail-to-rail input/output operational amplifier in SO14 package, designed for low-voltage portable systems. It operates from 2.7 V to 6 V, draws only 145 µA per amplifier, delivers 1 MHz gain bandwidth, and supports extended common-mode input range (V_DD − 0.2 V to V_CC + 0.2 V) - enabling direct sensing near supply rails in battery-powered glucose meters and laptop power monitoring circuits.

For engineers reviewing the LMV324IYDT datasheet, LMV324IYDT pinout, LMV324IYDT application, or LMV324IYDT equivalent, key selection criteria include its rail-to-rail I/O capability at sub-3 V operation, 145 µA quiescent current per channel, 1 MHz GBP under 2 kΩ load, −40 °C to +125 °C automotive-grade temperature range, and SO14 footprint compatibility with legacy LMV324 designs requiring AEC-Q100 alignment.

Technical Context

The LMV324IYDT implements a CMOS input stage with rail-to-rail differential pair architecture, enabling full-swing input down to V_DD − 0.2 V and output swing within 15 mV of V_DD and 2.65 V of V_CC at 2.7 V supply. Its 1 MHz gain-bandwidth product is maintained across 2.7–6 V supply and −40 °C to +125 °C, with phase margin stabilized at ≥44° into 600 Ω/100 pF loads.

It features 85 dB typical CMRR and 80 dB SVRR at 25 °C, 2 µV/°C input offset drift, and 40 nV/√Hz input voltage noise - optimized for precision DC-coupled signal conditioning where supply headroom and thermal stability are constrained, such as in medical sensor front-ends and embedded power supervisor feedback loops.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage Range	2.7 V to 6 V - enables direct operation from single-cell Li-ion or dual-cell alkaline without LDO pre-regulation
Quiescent Current per Amp	145 µA - allows four-channel amplification in ultra-low-power systems with <600 µA total analog front-end draw
Gain Bandwidth Product	1 MHz - supports closed-loop gains up to 100× at 10 kHz for ECG lead filtering or battery voltage scaling
Input Common-Mode Range	V_DD − 0.2 V to V_CC + 0.2 V - permits direct interface to 0–3.3 V ADC references and shunt-based current sense nodes
Output Voltage Swing	15 mV above V_DD, 2.65 V below V_CC at 2.7 V - delivers >98% rail utilization for 12-bit DAC buffer applications
Input Offset Voltage	0.1–3 mV (25 °C), ≤6 mV (−40 to +125 °C) - ensures <0.5% error in 3.3 V full-scale medical sensor outputs
ESD Rating (HBM)	2 kV - meets IEC 61000-4-2 Level 2 for handheld device touch interfaces and exposed sensor connectors

Pinout & Package

LMV324IYDT is housed in a 14-lead SOIC (SO14) package with standard 1.27 mm pitch, 8.55–8.75 mm body length, and 3.80–4.00 mm width per Table 8 of DS4539 Rev 10. Thermal resistance R_thJA is 103 °C/W, supporting continuous operation at ambient up to +85 °C with no forced airflow.

Pin/Terminal	Circuit Role	Design Meaning
1 (OUT A)	Amplifier A output	Drives low-impedance loads up to 46 mA sink/source; rail-to-rail swing enables direct connection to SAR ADC reference inputs
2 (−IN A)	Inverting input A	CMOS input with 10 nA max bias current; supports high-Z sensor interfaces without loading error
3 (+IN A)	Non-inverting input A	Accepts signals from 0.1 V below V_DD to 0.2 V above V_CC; enables single-supply thermistor biasing
4 (V_DD)	Negative supply	Ground-referenced operation only; must be connected to system GND - not floating or negative
5 (+IN B)	Non-inverting input B	Independent channel input; shares same rail-to-rail CM range as Pin 3 for multi-sensor synchronization
6 (−IN B)	Inverting input B	Matches Pin 2 performance; supports differential pair configuration with matched layout
7 (OUT B)	Amplifier B output	Electrically identical to Pin 1; allows dual-channel simultaneous sampling in portable data loggers
8 (OUT C)	Amplifier C output	Third independent output; enables three-phase motor current monitor with shared V_DD/V_CC
9 (−IN C)	Inverting input C	Supports active filter topology with external RC network tied to Pin 8 and Pin 10
10 (+IN C)	Non-inverting input C	Provides third high-impedance node for battery cell voltage monitoring in 4S Li-ion packs
11 (V_CC)	Positive supply	Accepts 2.7–6 V; internal ESD clamps protect against transients during hot-plug events
12 (+IN D)	Non-inverting input D	Enables fourth independent sensor path; used for system health check (e.g., V_REF validation)
13 (−IN D)	Inverting input D	Configurable as comparator hysteresis input when paired with Pin 14 and external resistor divider
14 (OUT D)	Amplifier D output	Final channel output; drives LED driver bias or fan control PWM input with <100 ns propagation delay

Key Features

Feature	Design Value
Rail-to-rail input and output	Enables full dynamic range utilization in 3.3 V systems without level-shifting circuitry or supply splitting
145 µA per amplifier supply current	Reduces total quiescent draw to 580 µA for all four channels - critical for >1-year coin-cell operation in wearable sensors
Extended common-mode input range	Supports direct connection to 0 V–3.3 V analog multiplexers without external bias resistors or charge pumps
AEC-Q100 qualified (Grade 2)	Validated for automotive cabin electronics including infotainment power sequencing and HVAC sensor signal conditioning
1 MHz gain-bandwidth at 2 kΩ load	Stable operation into capacitive loads up to 100 pF, eliminating need for isolation resistors in ADC driver stages

Applications

Glucose Meter Analog Front-End

Laptop Battery Fuel Gauge Interface

Use Scenario: Amplifying weak current signals from electrochemical test strips with 0.1–10 µA full scale.

IC Role / Device Role / Timing Role: Quad op-amp configured as transimpedance amplifier (Ch A), reference buffer (Ch B), ADC driver (Ch C), and temperature compensation stage (Ch D).

Use Value: Rail-to-rail I/O captures full strip response at 1.5 V supply; 145 µA/channel extends disposable meter battery life beyond 500 tests.

Use Scenario: Conditioning voltage and current sense signals for fuel gauge ICs (e.g., MAX17048) in 2-cell Li-ion laptops.

IC Role / Device Role / Timing Role: Simultaneous amplification of cell voltage (Ch A/B), pack current shunt (Ch C), and thermistor (Ch D) with matched gain and offset.

Use Value: Extended Vicm allows direct measurement of 0–8.4 V pack voltage using resistive dividers referenced to V_DD, reducing component count by 4 passive parts per channel.

Portable ECG Signal Conditioning

Automotive Cabin Temperature Sensor Hub

Use Scenario: Low-noise amplification and filtering of 0.5–100 Hz biopotential signals from dry electrodes.

IC Role / Device Role / Timing Role: Instrumentation-grade front-end with Ch A/B as differential pair, Ch C as 2nd-order low-pass, Ch D as right-leg drive buffer.

Use Value: 40 nV/√Hz input noise and 1 MHz GBP enable clean 100 Hz cutoff without phase distortion; 2 µV/°C drift maintains calibration over clinical operating range.

Use Scenario: Aggregating analog outputs from 4 NTC thermistors placed across dashboard, seat, HVAC duct, and ambient cabin zones.

IC Role / Device Role / Timing Role: Four independent voltage followers (unity-gain buffers) isolating each thermistor from multiplexer crosstalk and loading effects.

Use Value: AEC-Q100 qualification ensures reliability at 125 °C junction temperature; rail-to-rail output drives 10-bit SAR ADCs directly without external level shifters.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
LMV324IDT	Industrial-grade (−40 °C to +125 °C), same SO14 package and electrical specs, but lacks AEC-Q100 qualification and automotive traceability	Suitable for non-automotive portable equipment where cost sensitivity outweighs qualification requirements	Select when BOM cost reduction is prioritized over automotive audit trail and extended screening
TSV854IPT	Enhanced version: 1.7 MHz GBP, 160 µA per amp, 30 µV max V_io, TSSOP14 package only - no SO14 option	Better dynamic performance for higher-frequency sensor interfaces (e.g., ultrasonic distance sensing), but requires PCB redesign	Choose when upgrading existing LMV324 designs for improved bandwidth and offset, accepting TSSOP14 re-layout effort

Compared with LMV324IDT, LMV324IYDT adds AEC-Q100 Grade 2 compliance and enhanced process controls for automotive use, while TSV854IPT trades package compatibility for higher GBP and lower offset - making LMV324IYDT optimal for drop-in replacement in qualified automotive modules needing zero hardware change.

Availability

LMV324IYDT is available at Aetrix Electronics and suitable for battery-powered medical devices, automotive cabin electronics, and portable instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for LMV324IYDT 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 management ICs, analog chips, and MEMS sensors for industrial, automotive, and consumer markets.

The LMV324 series belongs to ST's general-purpose low-voltage op-amp product line, engineered specifically for cost-sensitive, space-constrained portable and automotive applications demanding rail-to-rail operation and ultra-low quiescent current.

FAQ

Is LMV324IYDT pin-compatible with standard LMV324IDT in SO14 package?

Yes - LMV324IYDT uses identical SO14 pinout, electrical specifications, and footprint as LMV324IDT. The "IY" suffix denotes AEC-Q100 qualification and automotive-grade screening, but mechanical and functional compatibility is maintained. No PCB redesign is required for drop-in replacement in automotive-qualified designs.

What is the maximum capacitive load the LMV324IYDT can drive without instability?

LMV324IYDT remains stable driving up to 100 pF capacitive load with 600 Ω series resistance, as verified in Figure 10 of DS4539 Rev 10. For direct capacitive loads >50 pF (e.g., ADC input capacitance), a 10–47 Ω isolation resistor between output and load is recommended to maintain ≥44° phase margin and prevent peaking.

Does LMV324IYDT support true single-supply operation with input signals at ground potential?

Yes - its extended common-mode input range includes V_DD − 0.2 V, and since V_DD is tied to system ground, it accepts inputs down to −0.2 V. This allows direct interfacing with grounded sensors (e.g., thermocouples with cold-junction compensation) without level-shifting circuitry, provided output load does not pull below ground.

How does the 145 µA per amplifier supply current translate to total power consumption in a 3.3 V system?

At 3.3 V and 25 °C, LMV324IYDT draws 145 µA per amplifier, totaling 580 µA for all four channels. This equates to 1.91 mW total quiescent power - less than one-third the consumption of legacy quad op-amps like TL074 (6–10 mA), enabling multi-day operation on CR2032 coin cells in wireless sensor nodes.

LMV324IYDT Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: 14-SOIC (0.154", 3.90mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Active

Amplifier Type:: General Purpose

Number of Circuits:: 4

Output Type:: Rail-to-Rail

Slew Rate:: 0.45V/µs

Gain Bandwidth Product:: 1.3 MHz

-3db Bandwidth:: -

Current - Input Bias:: 16 nA

Voltage - Input Offset:: 100 µV

Current - Supply:: 162µA

Current - Output / Channel:: 160 mA

Voltage - Supply Span (Min):: 2.7 V

Voltage - Supply Span (Max):: 6 V

Operating Temperature:: -40°C ~ 125°C

Grade:: Automotive

Qualification:: AEC-Q100

Mounting Type:: Surface Mount

Supplier Device Package:: 14-SO

LMV324IYDT FAQ

1.How can I place an order for LMV324IYDT through Aetrix?

Please submit a Request for Quotation (RFQ) for LMV324IYDT 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 LMV324IYDT reliable?

The price and inventory of LMV324IYDT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV324IYDT is usually 5 days.

3.What payment methods are accepted for LMV324IYDT?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV324IYDT transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for LMV324IYDT?

LMV324IYDT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your LMV324IYDT 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 LMV324IYDT?

For technical support, including LMV324IYDT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV324IYDT requirements.

6.How does Aetrix verify that LMV324IYDT is sourced from the original manufacturer or authorized distributors?

All LMV324IYDT 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 LMV324IYDT meets industry standards.

7.What is the process for return or replacement of LMV324IYDT?

All LMV324IYDT units undergo pre-shipment inspection (PSI). If there is an issue with LMV324IYDT, 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 LMV324IYDT part is unused and in its original packaging.

Return procedure for LMV324IYDT:

1.Submit a request within 90 days.

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

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