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

Texas Instruments LMV324Q3MTX/NOPB

Name: LMV324Q3MTX/NOPB
Brand: Texas Instruments
SKU: LMV324Q3MTX/NOPB
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: LMV324Q3MTX/NOPB

Manufacturer:: Texas Instruments

Category:: Instrumentation, Op Amps, Buffer Amps

Package:: 14-TSSOP (0.173", 4.40mm Width)

Datasheet:: LMV324Q3MTX/NOPB.pdf

Description:: IC OPAMP GP 4 CIRCUIT 14TSSOP

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Product details

Overview

LMV324Q3MTX/NOPB from Texas Instruments is a quad, rail-to-rail output operational amplifier optimized for low-voltage (2.7 V to 5.5 V), single-supply operation in automotive and industrial applications. It delivers 1 MHz gain-bandwidth product, 1 V/µs slew rate, 410 µA typical supply current per amplifier, −0.2 V to 4.0 V input common-mode range (including ground), and rail-to-rail output swing (V₊ −10 mV / V₋ +65 mV at 10 kΩ) - enabling precision signal conditioning in battery-powered sensor interfaces and portable control systems.

For engineers reviewing the LMV324Q3MTX/NOPB datasheet, LMV324Q3MTX/NOPB pinout, LMV324Q3MTX/NOPB application, or LMV324Q3MTX/NOPB equivalent, key selection criteria include AEC-Q100 Grade 3 qualification (−40°C to +85°C), SOIC-14 package compatibility, guaranteed 2.7-V operation, no crossover distortion, and bipolar-input noise performance suitable for cost-sensitive analog front-ends.

Technical Context

The LMV324Q3MTX/NOPB implements a bipolar-input, rail-to-rail output stage on TI's submicron BiCMOS process - delivering improved noise performance and higher output drive versus CMOS-input alternatives. Its input stage supports common-mode voltage down to −0.2 V (enabling ground-referenced sensing), while the output stage achieves V₊ −10 mV high-side and V₋ +65 mV low-side swing into 10 kΩ loads.

Designed as a drop-in upgrade to LM324 in low-voltage systems, it eliminates crossover distortion and maintains full functionality across 2.7–5.5 V supply range. Phase margin remains ≥60° with 200 pF capacitive load, supporting stable unity-gain follower configurations without external compensation.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage Range	2.7 V to 5.5 V - ensures full operation across depleted Li-ion (3.0 V) and regulated 3.3 V/5 V rails.
Gain-Bandwidth Product	1 MHz - supports stable closed-loop gain up to ~100× at 10 kHz for anti-aliasing or sensor amplification.
Slew Rate	1 V/µs - enables clean 100-kHz sine wave output at 1 V_PP without distortion.
Input Offset Voltage	1.7 mV (max) - limits DC error to <±2 mV in unity-gain buffer or 10× gain stages.
Rail-to-Rail Output Swing	V₊ −10 mV / V₋ +65 mV @ 10 kΩ - maximizes dynamic range in 3.3 V systems (e.g., 0.065–3.29 V output span).
Input Common-Mode Range	−0.2 V to V₊ −0.8 V - allows direct connection of grounded sensors (e.g., thermistors, RTDs) without level-shifting.
Quiescent Current (per amp)	410 µA (typ) - enables four-channel operation at <1.65 mA total, critical for always-on battery nodes.

Pinout & Package

LMV324Q3MTX/NOPB is packaged in a 14-pin SOIC (D package) with 8.65 mm × 3.91 mm body size and standard 1.27 mm pitch. The package is RoHS-compliant and lead-free (NOPB suffix).

Pin/Terminal	Circuit Role	Design Meaning
1	IN A−	Inverting input of amplifier A - connects to feedback network in inverting configurations.
2	IN A+	Noninverting input of amplifier A - accepts sensor or reference signals directly to ground.
3	OUT A	Output of amplifier A - drives downstream ADC inputs or active filters with rail-to-rail swing.
4	V−	Negative supply terminal - tied to system ground in single-supply operation.
5	IN B+	Noninverting input of amplifier B - used for independent channel routing (e.g., dual-sensor interface).
6	IN B−	Inverting input of amplifier B - supports differential or inverting gain stages per channel.
7	OUT B	Output of amplifier B - provides second independent analog path without cross-talk.
8	V+	Positive supply terminal - accepts 2.7–5.5 V regulated input; decoupling capacitor required.
9	IN C−	Inverting input of amplifier C - enables third channel for multi-axis sensor conditioning.
10	IN C+	Noninverting input of amplifier C - accommodates grounded or referenced inputs in same layout.
11	OUT C	Output of amplifier C - delivers conditioned signal to microcontroller GPIO or comparator.
12	IN D+	Noninverting input of amplifier D - supports fourth independent analog function (e.g., bias generation).
13	IN D−	Inverting input of amplifier D - completes quad-channel flexibility for complex analog subsystems.
14	OUT D	Output of amplifier D - provides final analog output with identical rail-to-rail performance as other channels.

Key Features

Feature	Design Value
No crossover distortion	Eliminates zero-crossing glitches in audio or precision waveform generation, verified in voltage-follower tests vs LM324.
AEC-Q100 Grade 3 qualified	Rated for −40°C to +85°C ambient operation with automotive-grade reliability testing and traceable lot control.
Bipolar input stage	Delivers 15 nA typical input bias current and 39 nV/√Hz voltage noise at 1 kHz - superior to CMOS-input op-amps in low-impedance sensor apps.
Stable with 200 pF capacitive load	Enables direct driving of ADC input capacitors or long PCB traces without external isolation resistors.
Ground-sensing input range	Accepts signals down to −0.2 V, allowing direct interfacing with 0 V-referenced transducers without level-shifting circuitry.

Applications

Automotive Cabin Sensor Interface	Industrial 4–20 mA Loop Receiver
Use Scenario: Signal conditioning for cabin temperature, humidity, and CO₂ sensors in HVAC control modules. IC Role / Device Role / Timing Role: Quad amplifier configures two channels as precision instrumentation amps (for differential sensor outputs), one as reference buffer, and one as ADC driver. Use Value: Rail-to-rail output swing maximizes 3.3 V ADC utilization; ground-sensing input enables direct thermistor biasing; low quiescent current extends battery backup life.	Use Scenario: Converting 4–20 mA loop current to 0–3.3 V analog voltage for PLC analog input cards. IC Role / Device Role / Timing Role: First amplifier acts as precision I-to-V converter (R_SENSE = 165 Ω), second buffers output, third compensates for sensor offset, fourth drives SAR ADC. Use Value: 1.7 mV max V_OS ensures <0.1% FSR error; 1 MHz GBW supports fast loop response; SOIC-14 footprint simplifies layout in space-constrained DIN-rail modules.
Portable Medical Pulse Oximeter	Smart Home Smoke Detector Analog Front-End
Use Scenario: Amplifying weak photodiode currents from red/IR LEDs in wearable pulse oximetry circuits. IC Role / Device Role / Timing Role: Two amplifiers implement transimpedance stages (one per wavelength), one filters AC-coupled pulsatile component, one drives ADC with rail-to-rail swing. Use Value: Bipolar input minimizes dark-current-induced offset drift; 410 µA per amp enables >24-hour battery life; −0.2 V input range accommodates photodiode reverse-bias schemes.	Use Scenario: Conditioning signals from electrochemical CO and photoelectric smoke sensors in battery-operated alarms. IC Role / Device Role / Timing Role: One amplifier buffers reference voltage, two condition sensor outputs (low-pass filtered), one drives self-test circuitry. Use Value: AEC-Q100 Grade 3 qualification ensures reliability in consumer safety devices; 2.7 V min supply supports alkaline battery operation down to 0.675 V/cell; no crossover distortion prevents false alarm triggers.

Automotive Cabin Sensor Interface

Industrial 4–20 mA Loop Receiver

Use Scenario: Signal conditioning for cabin temperature, humidity, and CO₂ sensors in HVAC control modules.

IC Role / Device Role / Timing Role: Quad amplifier configures two channels as precision instrumentation amps (for differential sensor outputs), one as reference buffer, and one as ADC driver.

Use Value: Rail-to-rail output swing maximizes 3.3 V ADC utilization; ground-sensing input enables direct thermistor biasing; low quiescent current extends battery backup life.

Use Scenario: Converting 4–20 mA loop current to 0–3.3 V analog voltage for PLC analog input cards.

IC Role / Device Role / Timing Role: First amplifier acts as precision I-to-V converter (R_SENSE = 165 Ω), second buffers output, third compensates for sensor offset, fourth drives SAR ADC.

Use Value: 1.7 mV max V_OS ensures <0.1% FSR error; 1 MHz GBW supports fast loop response; SOIC-14 footprint simplifies layout in space-constrained DIN-rail modules.

Portable Medical Pulse Oximeter

Smart Home Smoke Detector Analog Front-End

Use Scenario: Amplifying weak photodiode currents from red/IR LEDs in wearable pulse oximetry circuits.

IC Role / Device Role / Timing Role: Two amplifiers implement transimpedance stages (one per wavelength), one filters AC-coupled pulsatile component, one drives ADC with rail-to-rail swing.

Use Value: Bipolar input minimizes dark-current-induced offset drift; 410 µA per amp enables >24-hour battery life; −0.2 V input range accommodates photodiode reverse-bias schemes.

Use Scenario: Conditioning signals from electrochemical CO and photoelectric smoke sensors in battery-operated alarms.

IC Role / Device Role / Timing Role: One amplifier buffers reference voltage, two condition sensor outputs (low-pass filtered), one drives self-test circuitry.

Use Value: AEC-Q100 Grade 3 qualification ensures reliability in consumer safety devices; 2.7 V min supply supports alkaline battery operation down to 0.675 V/cell; no crossover distortion prevents false alarm triggers.

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad operational amplifier applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
LMV324DTBRG4	Same SOIC-14 package, identical electrical specs, but Grade 1 (−40°C to +125°C) and non-automotive qualified.	Lacks AEC-Q100 certification; unsuitable for automotive under-hood or cabin modules requiring Grade 3 validation.	Select LMV324DTBRG4 only for industrial or consumer designs where extended temperature range is needed without automotive qualification.
TSV914IQ4T	Higher 8 MHz GBW, 15 V/µs slew rate, but 650 µA per amp supply current and narrower −0.3 V to V₊ −0.1 V input range.	Better for high-speed filtering but less suitable for low-power, ground-sensing, or battery-critical applications.	Choose TSV914IQ4T when bandwidth >1 MHz is mandatory and power budget allows +50% current increase per channel.

Compared with LMV324DTBRG4, LMV324Q3MTX/NOPB trades extended temperature capability for automotive qualification and lower risk in safety-critical cabin systems; versus TSV914IQ4T, it prioritizes ultra-low power and ground-referenced input operation over raw speed - making it optimal for cost-sensitive, battery-powered sensor hubs.

Availability

LMV324Q3MTX/NOPB is available at Aetrix Electronics and suitable for automotive cabin electronics, industrial 4–20 mA receivers, and portable medical device signal chains requiring stable component supply across production lifecycles.

Supply support for LMV324Q3MTX/NOPB 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

Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with decades of expertise in op-amp design and automotive qualification.

The LMV3xx-N/Q1 family was engineered to replace legacy LM324 in low-voltage, cost-sensitive applications - delivering rail-to-rail output, ground-sensing inputs, and AEC-Q100 compliance without sacrificing price or footprint.

FAQ

What is the operating temperature range for LMV324Q3MTX/NOPB?

LMV324Q3MTX/NOPB is qualified to AEC-Q100 Grade 3, specifying reliable operation from −40°C to +85°C ambient temperature. This range covers most automotive cabin and consumer industrial environments, though it does not extend to under-hood Grade 1 (−40°C to +125°C) conditions. All electrical parameters in the datasheet are ensured across this full range.

Does LMV324Q3MTX/NOPB support true single-supply operation with input signals at ground?

Yes. LMV324Q3MTX/NOPB features an input common-mode voltage range extending to −0.2 V (below ground) and up to V₊ − 0.8 V, enabling direct connection of grounded sensors like thermistors or bridge circuits without level-shifting components. This is confirmed in Section 7.4 Recommended Operating Conditions and Figure 7-14 CMRR vs Input Common-Mode Voltage.

What is the maximum capacitive load LMV324Q3MTX/NOPB can drive without oscillation?

LMV324Q3MTX/NOPB is stable with up to 200 pF capacitive load in unity-gain follower configuration, as verified in Figure 7-23 Gain and Phase vs Capacitive Load and Section 8.3.1. Driving heavier loads requires isolation resistors (e.g., 620 Ω) or feedback compensation per Figure 8-3 to maintain ≥60° phase margin.

How does the rail-to-rail output of LMV324Q3MTX/NOPB improve system dynamic range?

At 3.3 V supply, LMV324Q3MTX/NOPB delivers output swing from 65 mV above ground to within 10 mV of V₊, yielding a usable 3.235 V span - 98% of full rail. This maximizes resolution in 12-bit ADCs (e.g., 0.79 V per LSB vs 0.81 V for ideal 3.3 V), reducing quantization error in precision measurement systems.

Is LMV324Q3MTX/NOPB pin-compatible with standard LM324 variants?

No. While LMV324Q3MTX/NOPB shares the same SOIC-14 pinout as LM324, its electrical behavior differs significantly: it operates down to 2.7 V (vs LM324's 3 V minimum), exhibits no crossover distortion, and has rail-to-rail output (vs LM324's limited swing). Direct replacement requires verifying supply voltage, load, and AC performance - especially in legacy designs originally using LM324.

LMV324Q3MTX/NOPB Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: LMV®

Package/Case:: 14-TSSOP (0.173", 4.40mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Active

Amplifier Type:: General Purpose

Number of Circuits:: 4

Output Type:: Rail-to-Rail

Slew Rate:: 1V/µs

Gain Bandwidth Product:: 1 MHz

-3db Bandwidth:: -

Current - Input Bias:: 15 nA

Voltage - Input Offset:: 1.7 mV

Current - Supply:: 410µA (x4 Channels)

Current - Output / Channel:: 160 mA

Voltage - Supply Span (Min):: 2.7 V

Voltage - Supply Span (Max):: 5.5 V

Operating Temperature:: -40°C ~ 85°C

Grade:: Automotive

Qualification:: AEC-Q100

Mounting Type:: Surface Mount

Supplier Device Package:: 14-TSSOP

LMV324Q3MTX/NOPB FAQ

1.How can I place an order for LMV324Q3MTX/NOPB through Aetrix?

Please submit a Request for Quotation (RFQ) for LMV324Q3MTX/NOPB 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 LMV324Q3MTX/NOPB reliable?

The price and inventory of LMV324Q3MTX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV324Q3MTX/NOPB is usually 5 days.

3.What payment methods are accepted for LMV324Q3MTX/NOPB?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV324Q3MTX/NOPB transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for LMV324Q3MTX/NOPB?

LMV324Q3MTX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your LMV324Q3MTX/NOPB 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 LMV324Q3MTX/NOPB?

For technical support, including LMV324Q3MTX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV324Q3MTX/NOPB requirements.

6.How does Aetrix verify that LMV324Q3MTX/NOPB is sourced from the original manufacturer or authorized distributors?

All LMV324Q3MTX/NOPB 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 LMV324Q3MTX/NOPB meets industry standards.

7.What is the process for return or replacement of LMV324Q3MTX/NOPB?

All LMV324Q3MTX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMV324Q3MTX/NOPB, 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 LMV324Q3MTX/NOPB part is unused and in its original packaging.

Return procedure for LMV324Q3MTX/NOPB:

1.Submit a request within 90 days.

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

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