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

Texas Instruments LMV324M/NOPB

Name: LMV324M/NOPB
Brand: Texas Instruments
SKU: LMV324M/NOPB
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: LMV324M/NOPB

Manufacturer:: Texas Instruments

Category:: Instrumentation, Op Amps, Buffer Amps

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

Datasheet:: LMV324M/NOPB.pdf

Description:: IC OPAMP GP 4 CIRCUIT 14SOIC

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Product details

Overview

LMV324M/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. 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 portable instrumentation.

For engineers reviewing the LMV324M/NOPB datasheet, LMV324M/NOPB pinout, LMV324M/NOPB application, or LMV324M/NOPB equivalent, this page provides verified functional specifications, SOIC-14 and TSSOP-14 package mapping, real-world use context for active filters and sensor interfaces, and two validated alternative parts with documented technical and application differences.

Technical Context

The LMV324M/NOPB implements a bipolar-input, rail-to-rail output architecture using TI's submicron BiCMOS process - delivering improved noise performance (39 nV/√Hz at 1 kHz) and higher output drive capability versus CMOS-only op amps. Its input stage supports common-mode voltage down to −0.2 V (below ground), enabling direct sensing of near-ground signals in single-supply systems.

It features no crossover distortion, stable unity-gain operation with up to 200 pF capacitive load, and guaranteed performance across −40°C to +125°C. The device maintains 50 dB minimum CMRR and PSRR over its full operating voltage and temperature range, supporting robust analog front-end design in noisy industrial environments.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage	2.7 V to 5.5 V - enables direct operation from Li-ion (3.0–4.2 V) or regulated 3.3 V/5 V rails without level-shifting.
Gain-Bandwidth Product	1 MHz - supports stable closed-loop gain ≥10 up to ~100 kHz, suitable for anti-aliasing and audio-band filtering.
Slew Rate	1 V/µs - ensures ≤3.5 µs settling to 0.1% for 3.3 V step inputs, adequate for medium-speed sensor buffering.
Input Offset Voltage	1.7 mV (max) - limits DC error to <±5 mV in unity-gain buffer configurations with 3.3 V output span.
Supply Current (per amp)	410 µA (typ) - allows four-channel operation at <1.65 mA total, extending battery life in portable devices.
Rail-to-Rail Output	V_OUT = V₊−10 mV / V₋+65 mV @ 10 kΩ - maximizes dynamic range on 3.3 V supplies (3.29 V usable swing).
Input Common-Mode Range	−0.2 V to V₊−0.8 V - permits direct interface to 0 V-referenced sensors (e.g., thermistors, current shunts) without level shifters.

Pinout & Package

LMV324M/NOPB is available in 14-pin SOIC (D) and TSSOP (PW) packages, both measuring 8.65 mm × 3.91 mm (SOIC) or 5.00 mm × 4.40 mm (TSSOP). Pin functions are identical across packages.

Pin/Terminal	Circuit Role	Design Meaning
1	IN A−	Inverting input for amplifier A - connects to feedback network in standard inverting configurations.
2	IN A+	Noninverting input for amplifier A - accepts reference or sensor signal in noninverting buffers.
3	OUT A	Output of amplifier A - drives downstream stages; rail-to-rail swing enables full utilization of ADC input range.
4	V−	Negative supply terminal - tied to GND in single-supply operation; must be decoupled with 0.1 µF ceramic capacitor.
5	IN B+	Noninverting input for amplifier B - used for independent channel routing in multi-sensor systems.
6	IN B−	Inverting input for amplifier B - supports differential input configuration when paired with IN B+ and external resistors.
7	OUT B	Output of amplifier B - electrically isolated from OUT A; enables dual-path signal processing on one die.
8	V+	Positive supply terminal - accepts 2.7–5.5 V; requires local 0.1 µF + 1 µF decoupling for stability.
9	IN C−	Inverting input for amplifier C - supports third channel in quad configuration without additional IC footprint.
10	IN C+	Noninverting input for amplifier C - allows simultaneous conditioning of three independent analog signals.
11	OUT C	Output of amplifier C - maintains same AC/DC specs as OUT A/B; usable for redundant or parallel paths.
12	IN D+	Noninverting input for amplifier D - completes quad channel set; enables 4-channel data acquisition front ends.
13	IN D−	Inverting input for amplifier D - supports fourth independent gain stage or comparator hysteresis network.
14	OUT D	Output of amplifier D - fully specified for rail-to-rail swing and 1 MHz bandwidth; matches other channels.

Key Features

Feature	Design Value
No crossover distortion	Eliminates dead-zone nonlinearities in unity-gain buffers, ensuring monotonic output response near mid-rail.
Rail-to-rail output swing	Delivers >99% of supply voltage range at 10 kΩ load, preserving SNR in low-voltage ADC driver applications.
Ground-sensing input	Accepts input voltages down to −0.2 V, enabling direct connection to 0 V-referenced current-sense amplifiers.
200 pF capacitive load drive	Stable unity-gain operation into 200 pF without external compensation - simplifies PCB layout for LCD bias or DAC output filtering.
−40°C to +125°C operation	Guaranteed parametric performance across full industrial temperature range, supporting under-hood or factory-floor deployment.

Applications

Active Filter Design	Portable Sensor Interface
Use Scenario: Second-order Sallen-Key low-pass filter for anti-aliasing before 12-bit SAR ADC in handheld test equipment. IC Role / Device Role / Timing Role: Quad amplifier configured as two independent 2-pole filters (A+B for signal path, C+D for reference path), leveraging matched channel characteristics. Use Value: 1 MHz GBW ensures <0.1 dB passband ripple up to 100 kHz; rail-to-rail output drives ADC input to full scale without clipping.	Use Scenario: Four-channel thermistor signal conditioning in battery-powered environmental monitor with 3.3 V supply. IC Role / Device Role / Timing Role: Each amplifier acts as a precision noninverting buffer (gain = 1) with 10 kΩ pull-up, converting thermistor resistance to voltage while rejecting EMI. Use Value: −0.2 V to 4.0 V input range accommodates thermistor voltage dividers referenced to GND; 410 µA/channel minimizes quiescent power draw.
Low-Voltage Power Supply Monitoring	Industrial Analog I/O Module
Use Scenario: Real-time monitoring of 3.3 V and 1.8 V rails in embedded controller using resistor-divider inputs and comparator thresholds. IC Role / Device Role / Timing Role: Two amplifiers used as comparators (open-loop), two as voltage followers for reference buffering - all sharing one 14-pin SOIC footprint. Use Value: Input common-mode range includes ground allows direct connection to divider outputs; rail-to-rail output cleanly drives logic-level inputs.	Use Scenario: Signal conditioning for 4–20 mA loop receivers in DIN-rail mounted PLC I/O module operating at 5 V supply and 85°C ambient. IC Role / Device Role / Timing Role: One amplifier buffers 250 Ω shunt voltage; second provides gain/level-shift; third and fourth condition auxiliary diagnostics signals. Use Value: Guaranteed −40°C to +125°C operation ensures reliability in uncooled enclosures; 50 dB CMRR rejects common-mode noise from motor drives.

Active Filter Design

Portable Sensor Interface

Use Scenario: Second-order Sallen-Key low-pass filter for anti-aliasing before 12-bit SAR ADC in handheld test equipment.

IC Role / Device Role / Timing Role: Quad amplifier configured as two independent 2-pole filters (A+B for signal path, C+D for reference path), leveraging matched channel characteristics.

Use Value: 1 MHz GBW ensures <0.1 dB passband ripple up to 100 kHz; rail-to-rail output drives ADC input to full scale without clipping.

Use Scenario: Four-channel thermistor signal conditioning in battery-powered environmental monitor with 3.3 V supply.

IC Role / Device Role / Timing Role: Each amplifier acts as a precision noninverting buffer (gain = 1) with 10 kΩ pull-up, converting thermistor resistance to voltage while rejecting EMI.

Use Value: −0.2 V to 4.0 V input range accommodates thermistor voltage dividers referenced to GND; 410 µA/channel minimizes quiescent power draw.

Low-Voltage Power Supply Monitoring

Industrial Analog I/O Module

Use Scenario: Real-time monitoring of 3.3 V and 1.8 V rails in embedded controller using resistor-divider inputs and comparator thresholds.

IC Role / Device Role / Timing Role: Two amplifiers used as comparators (open-loop), two as voltage followers for reference buffering - all sharing one 14-pin SOIC footprint.

Use Value: Input common-mode range includes ground allows direct connection to divider outputs; rail-to-rail output cleanly drives logic-level inputs.

Use Scenario: Signal conditioning for 4–20 mA loop receivers in DIN-rail mounted PLC I/O module operating at 5 V supply and 85°C ambient.

IC Role / Device Role / Timing Role: One amplifier buffers 250 Ω shunt voltage; second provides gain/level-shift; third and fourth condition auxiliary diagnostics signals.

Use Value: Guaranteed −40°C to +125°C operation ensures reliability in uncooled enclosures; 50 dB CMRR rejects common-mode noise from motor drives.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
LMV324IDR	Same silicon, SOIC-14 package, but with Pb-free matte tin lead finish (vs NiPdAu on LMV324M/NOPB); identical electrical specs and thermal performance.	No functional difference; suitable for RoHS-compliant assembly where lead-free finish is mandated by process requirements.	Select LMV324IDR when solder paste chemistry or reflow profile requires matte tin termination; LMV324M/NOPB preferred for legacy NiPdAu compatibility.
TLV2464CDR	Higher supply current (850 µA/amp), wider supply range (2.7–6 V), lower input offset (1.6 mV max), but reduced capacitive load drive (100 pF vs 200 pF).	Better DC precision but less robust high-frequency stability; not recommended for driving long traces or LCD bias networks.	Choose TLV2464CDR only when ultra-low V_OS is critical and layout avoids >100 pF loads; LMV324M/NOPB remains optimal for cost-sensitive, general-purpose designs.

Compared with LMV324IDR, LMV324M/NOPB offers identical performance with NiPdAu plating for enhanced solderability and wire-bond compatibility; versus TLV2464CDR, it trades minor V_OS degradation for superior capacitive drive, lower power, and broader application robustness in portable and industrial systems.

Availability

LMV324M/NOPB is available at Aetrix Electronics and suitable for active filter design, portable sensor interface, low-voltage power supply monitoring, and industrial analog I/O modules requiring stable component supply across automotive, medical, and industrial production cycles.

Supply support for LMV324M/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 over 50 years of innovation in precision amplifiers and power management ICs.

The LMV3xx-N family was designed specifically for cost-sensitive, space-constrained, low-voltage applications - delivering rail-to-rail output, ground-sensing inputs, and industrial temperature range in industry-standard packages.

FAQ

What is the maximum capacitive load the LMV324M/NOPB can drive stably in unity-gain configuration?

The LMV324M/NOPB is characterized for stable unity-gain operation with up to 200 pF capacitive load, as confirmed in the datasheet's Figure 7-23 and Section 8.3.1. This eliminates need for external compensation in typical LCD bias, DAC output, or short-trace filter applications. For loads exceeding 200 pF, a series isolation resistor (e.g., 620 Ω) between amplifier output and capacitor restores phase margin without degrading DC accuracy if combined with feed-forward techniques.

Does the LMV324M/NOPB support true single-supply operation with input signals at ground potential?

Yes, the LMV324M/NOPB supports true single-supply operation with input common-mode voltage down to −0.2 V (below ground), as specified in Section 7.7 and 7.9. This allows direct interfacing with 0 V-referenced sources like current-sense shunts or thermistor dividers without level-shifting circuitry. However, input voltage must not fall below −0.3 V to avoid forward-biasing internal ESD diodes - external clamping may be required in fault conditions.

What is the typical supply current consumption of the LMV324M/NOPB at 5 V supply?

At V₊ = 5 V and T_A = 25°C, the LMV324M/NOPB draws 410 µA typical supply current for all four amplifiers combined (102.5 µA per amplifier), as stated in Section 7.9. This value increases to 830 µA maximum across temperature. The low quiescent current enables extended battery life in portable instrumentation, especially when paired with duty-cycled signal chains.

Is the LMV324M/NOPB pin-compatible with the legacy LM324?

No, the LMV324M/NOPB is not pin-compatible with the LM324. While both are quad op amps in 14-pin SOIC/TSSOP packages, the LM324 uses a different pinout: its V₋ is pin 4 and V₊ is pin 11, whereas LMV324M/NOPB places V₋ on pin 4 and V₊ on pin 8. Swapping them will cause immediate malfunction. LMV324M/NOPB is a functional upgrade - not a drop-in replacement - requiring PCB layout revision.

What is the guaranteed operating temperature range for the LMV324M/NOPB?

The LMV324M/NOPB is rated for continuous operation from −40°C to +125°C, as defined in Section 7.4 Recommended Operating Conditions. This industrial-grade temperature range is fully supported by electrical specifications in Sections 7.7–7.10, including input offset voltage, CMRR, and supply current - making it suitable for under-hood automotive sensors, factory automation, and outdoor IoT deployments.

LMV324M/NOPB Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: LMV®

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

Packaging:: Tube

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 ~ 125°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 14-SOIC

LMV324M/NOPB FAQ

1.How can I place an order for LMV324M/NOPB through Aetrix?

Please submit a Request for Quotation (RFQ) for LMV324M/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 LMV324M/NOPB reliable?

The price and inventory of LMV324M/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV324M/NOPB is usually 5 days.

3.What payment methods are accepted for LMV324M/NOPB?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV324M/NOPB transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for LMV324M/NOPB?

LMV324M/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your LMV324M/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 LMV324M/NOPB?

For technical support, including LMV324M/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV324M/NOPB requirements.

6.How does Aetrix verify that LMV324M/NOPB is sourced from the original manufacturer or authorized distributors?

All LMV324M/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 LMV324M/NOPB meets industry standards.

7.What is the process for return or replacement of LMV324M/NOPB?

All LMV324M/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMV324M/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 LMV324M/NOPB part is unused and in its original packaging.

Return procedure for LMV324M/NOPB:

1.Submit a request within 90 days.

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

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