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

STMicroelectronics LMV324IDT

Name: LMV324IDT
Brand: STMicroelectronics
SKU: LMV324IDT
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: LMV324IDT

Manufacturer:: STMicroelectronics

Category:: Instrumentation, Op Amps, Buffer Amps

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

Datasheet:: LMV324IDT.pdf

Description:: IC OPAMP GP 4 CIRCUIT 14SO

Quantity:: RFQ Add To RFQ list

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Product details

Overview

LMV324IDT 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) at 25 °C - enabling accurate signal conditioning in battery-powered glucose meters and laptop power monitoring circuits.

For engineers reviewing the LMV324IDT datasheet, LMV324IDT pinout, LMV324IDT application, or LMV324IDT equivalent, key selection criteria include its rail-to-rail I/O capability at 2.7–6 V supply, 145 µA quiescent current per channel, 1 MHz GBP, −40 °C to +125 °C operating temperature, and SO14 packaging for space-constrained analog front-ends.

Technical Context

This quad op-amp uses CMOS input stage architecture to achieve rail-to-rail input common-mode range extending beyond supply rails by ±0.2 V at 25 °C, and rail-to-rail output swing within 15 mV of each rail under 10 kΩ load. Its 1 MHz unity-gain bandwidth and 0.35 V/µs slew rate support stable closed-loop operation in DC-coupled sensor interfaces and low-frequency active filters.

The device features 85 dB typical CMRR and 80 dB typical PSRR at 25 °C with 2.7 V supply, and maintains 55 dB CMRR across full −40 °C to +125 °C range - ensuring robust performance in noisy industrial or medical environments where supply ripple and common-mode transients are present.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage	2.7 V to 6 V - enables direct operation from single Li-ion or dual alkaline cells without LDO regulation.
Quiescent Current	145 µA per amplifier - allows four independent channels to operate continuously on <1 mA total, critical for multi-sensor battery life extension.
Gain Bandwidth Product	1 MHz - supports stable unity-gain buffers and 2nd-order filters up to ~100 kHz with adequate phase margin (44°).
Input Offset Voltage	0.1–3 mV (typ–max at 25 °C) - ensures ≤3 mV error in 0–3 V sensor output amplification without trimming.
Common-Mode Input Range	V_DD − 0.2 V to V_CC + 0.2 V at 25 °C - permits direct sensing of signals referenced to ground or V_CC, e.g., shunt-based current monitoring.
Output Voltage Swing	Within 15 mV of rails (RL = 10 kΩ) - preserves dynamic range in low-voltage ADC driver stages.
ESD Rating	2 kV HBM - provides baseline handling robustness for assembly and field use in handheld medical devices.

Pinout & Package

LMV324IDT is housed in a 14-pin SOIC (SO14) package with 1.27 mm pitch, 8.75 mm × 3.9 mm body, and thermal resistance R_thJA = 103 °C/W. Pin numbering follows standard SO14 convention with notch-left orientation.

Pin/Terminal	Circuit Role	Design Meaning
1	Output A	Amplifier A output - drives external load or next-stage input; rail-to-rail capable.
2	Inverting Input A	− input of Amp A - accepts feedback or signal source; CMVR extends to V_DD − 0.2 V.
3	Non-inverting Input A	+ input of Amp A - connects to sensor reference or signal source; same CMVR as Pin 2.
4	V_DD (GND)	Ground reference - all inputs and outputs referenced to this node; must be low-impedance.
5	Non-inverting Input B	+ input of Amp B - independently configurable; shares same rail-to-rail input capability.
6	Inverting Input B	− input of Amp B - used for differential gain stage or inverting configuration.
7	Output B	Amplifier B output - electrically isolated from Output A; supports independent signal paths.
8	V_CC	Positive supply - powers all four amplifiers; must be decoupled with ≥100 nF ceramic near Pin 8.
9	Output C	Amplifier C output - enables three-channel simultaneous signal conditioning (e.g., ECG lead amplification).
10	Inverting Input C	− input of Amp C - configured for precision gain or filtering without cross-talk to other sections.
11	Non-inverting Input C	+ input of Amp C - accepts bias or reference voltage for level-shifting applications.
12	Non-inverting Input D	+ input of Amp D - supports fourth independent channel, e.g., battery voltage monitor.
13	Inverting Input D	− input of Amp D - used for comparator hysteresis or active filter feedback.
14	Output D	Amplifier D output - completes quad functionality; compatible with ADC input drive requirements.

Key Features

Feature	Design Value
Rail-to-rail input and output	Enables full-scale signal capture and drive in 2.7–6 V systems without level-shifting circuitry.
145 µA per amplifier supply current	Permits continuous operation of all four channels on <600 µA total - ideal for always-on health monitors.
Extended common-mode input range	V_DD − 0.2 V to V_CC + 0.2 V at 25 °C allows direct interface to grounded sensors and high-side shunts.
1 MHz gain bandwidth product	Supports stable closed-loop configurations up to ~100 kHz, sufficient for biosignal amplification and anti-aliasing.
−40 °C to +125 °C operating range	Validates use in automotive cabin modules and industrial portable test equipment without derating.

Applications

Glucose Meter Analog Front-End

Laptop Battery Voltage Monitor

Use Scenario: Amplifying low-level current from electrochemical glucose sensor strips (0–100 µA) into 0–3 V range for 12-bit ADC digitization.

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

Use Value: Rail-to-rail I/O and 145 µA/channel current enable full dynamic range utilization and >100-hour battery life on two AA cells.

Use Scenario: Monitoring cell voltage (2.5–4.2 V), pack temperature (via NTC), and charge current (shunt-based) in multi-cell Li-ion battery packs.

IC Role / Device Role / Timing Role: Four independent amplifiers condition each sensor signal simultaneously with matched gain and offset.

Use Value: Extended Vicm allows direct sensing of shunt voltage referenced to battery negative, eliminating level-shifters and reducing BOM count.

Portable ECG Signal Conditioning

Industrial Handheld Multimeter Input Stage

Use Scenario: Amplifying and filtering microvolt-level biopotential signals (RA-LA, LA-LL, RA-LL leads) while rejecting 50/60 Hz interference.

IC Role / Device Role / Timing Role: Three op-amps form instrumentation amplifier core; fourth provides right-leg drive (RLD) feedback.

Use Value: 85 dB CMRR and 1 MHz GBP ensure >60 dB line rejection and stable 150 Hz low-pass filtering without peaking.

Use Scenario: Scaling high-impedance voltage inputs (0–1000 V) and low-current inputs (0–10 A) into ADC-friendly ranges using programmable gain stages.

IC Role / Device Role / Timing Role: Quad amplifier implements precision attenuator, current-to-voltage conversion, offset nulling, and buffer.

Use Value: 3 mV max input offset and 145 µA quiescent current allow 0.1% accuracy over temperature while minimizing self-heating drift.

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
LMV324IPT	TSSOP14 package (4.5 × 5.0 mm), R_thJA = 100 °C/W vs. SO14's 103 °C/W; identical electrical specs.	Better board space efficiency in dense layouts; requires finer-pitch reflow profile.	Select for compact PCBs where thermal margin allows TSSOP; avoid if legacy SO14 footprint required.
TSV854IDT	Higher GBP (1.7 MHz), lower V_io (0.5 mV typ), higher ICC (220 µA/ch); same SO14 package.	Improved AC performance and DC accuracy at cost of +52% supply current per channel.	Select when bandwidth or offset sensitivity outweighs battery life constraints - e.g., audio preamp or precision data acquisition.

Compared with LMV324IDT, LMV324IPT offers identical analog performance in a smaller footprint but tighter assembly tolerance, while TSV854IDT trades 52% higher current for 70% more bandwidth and half the typical offset - making it suitable for higher-precision, AC-critical roles where power budget permits.

Availability

LMV324IDT is available at Aetrix Electronics and suitable for battery-powered medical devices, portable instrumentation, and industrial handheld equipment requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for LMV324IDT 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, analog ICs, power management, 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, battery-operated applications demanding rail-to-rail operation, low quiescent current, and robust industrial temperature performance.

FAQ

What is the maximum output current capability of LMV324IDT per channel?

Each amplifier in the LMV324IDT can source or sink up to 48 mA (typical at V_CC = 5 V), with minimum guaranteed output current of 7 mA under worst-case conditions. This supports driving 10 kΩ loads to rail with <15 mV drop and enables direct interface to LED indicators or small relays without external buffers.

Does LMV324IDT support true rail-to-rail input at full temperature range?

At −40 °C to +125 °C, the common-mode input range is specified as V_DD to V_CC - meaning it reaches both rails but does not extend beyond them. The extended range (V_DD − 0.2 V to V_CC + 0.2 V) applies only at 25 °C. Designers must verify input headroom margins across temperature for high-accuracy applications.

Can LMV324IDT be used in single-supply comparator applications?

Yes - its rail-to-rail output and wide input common-mode range allow use as a comparator with hysteresis, though it lacks dedicated comparator features like internal pull-up or fast propagation delay. Typical response time is ~1.5 µs for 100 mV overdrive, making it suitable for non-critical threshold detection in sensor wake-up circuits.

Is LMV324IDT pin-compatible with other quad op-amps in SO14 package?

No - LMV324IDT follows ST's standard SO14 op-amp pinout (outputs on Pins 1, 7, 9, 14), but it is not pin-compatible with industry-standard TL074 or LM324 due to differing input/output assignments. Board layout must follow ST's documented pin mapping; no drop-in replacement is supported without schematic and layout revision.

LMV324IDT 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:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 14-SO

LMV324IDT FAQ

1.How can I place an order for LMV324IDT through Aetrix?

Please submit a Request for Quotation (RFQ) for LMV324IDT 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 LMV324IDT reliable?

The price and inventory of LMV324IDT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV324IDT is usually 5 days.

3.What payment methods are accepted for LMV324IDT?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV324IDT transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for LMV324IDT?

LMV324IDT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your LMV324IDT 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 LMV324IDT?

For technical support, including LMV324IDT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV324IDT requirements.

6.How does Aetrix verify that LMV324IDT is sourced from the original manufacturer or authorized distributors?

All LMV324IDT 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 LMV324IDT meets industry standards.

7.What is the process for return or replacement of LMV324IDT?

All LMV324IDT units undergo pre-shipment inspection (PSI). If there is an issue with LMV324IDT, 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 LMV324IDT part is unused and in its original packaging.

Return procedure for LMV324IDT:

1.Submit a request within 90 days.

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

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