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Texas Instruments LM324MTX/NOPB
- Part No.:
- LM324MTX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
LM324MTX/NOPB.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:8,326
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Product details
Overview
LM324MTX/NOPB from Texas Instruments is a low-power, quad operational amplifier designed for single-supply operation (3 V to 32 V) with internally compensated unity-gain stability, 1 MHz bandwidth, 100 dB DC voltage gain, and rail-to-rail input common-mode range including ground - widely used in transducer amplification, DC gain blocks, and sensor interface circuits in industrial control and embedded systems.
For engineers reviewing the LM324MTX/NOPB datasheet, LM324MTX/NOPB pinout, LM324MTX/NOPB application, or LM324MTX/NOPB equivalent, this page delivers verified electrical specs, package mapping to SOIC-14, confirmed pin functions, thermal derating guidance, and real-world design constraints including output swing limits, input bias current behavior, and short-circuit protection thresholds.
Technical Context
The LM324MTX/NOPB implements a PNP-input stage with temperature-compensated biasing, enabling stable 45 nA input bias current across its full supply range and operating junction temperature of 0°C to +70°C. Its class-A/class-B hybrid output stage supports both sourcing (up to 40 mA) and sinking (up to 20 mA) while maintaining 0 V to V+ −1.5 V output swing under 10 kΩ load.
Internally frequency-compensated for unity-gain stability, it achieves 1 MHz gain-bandwidth product with 2 mV typical input offset voltage and 5 nA offset current. Input common-mode voltage extends to ground, allowing direct sensing of 0 V-referenced signals without level-shifting circuitry - critical for battery-powered and single-rail analog front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | Single supply: 3 V to 32 V; enables direct use with 5 V digital rails or 24 V industrial buses without auxiliary supplies. |
| Input Offset Voltage | 2 mV (typ), 7 mV (max) at 25°C; determines minimum detectable signal in precision DC amplification stages. |
| Input Bias Current | 45 nA (typ), 250 nA (max) at 25°C; low enough to avoid significant error in high-impedance sensor interfaces (e.g., thermistors, photodiodes). |
| Unity-Gain Bandwidth | 1 MHz; sets maximum usable frequency for non-inverting gain ≥1 configurations without phase-margin loss. |
| Output Voltage Swing | 0 V to V+ −1.5 V (RL = 10 kΩ); allows near-ground output in single-supply systems, supporting TTL/CMOS interfacing. |
| Supply Current per Amplifier | 700 μA (typ) at 5 V; enables four-channel amplification in power-constrained applications like portable instrumentation. |
| Common-Mode Rejection Ratio | 65 dB (min); limits error from shared noise on differential inputs in noisy industrial environments. |
Pinout & Package
LM324MTX/NOPB is packaged in a 14-pin SOIC (Small Outline Integrated Circuit) with body dimensions 8.65 mm × 3.91 mm and standard JEDEC MS-012AC footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 7, 8, 14 | Output | Amplifier outputs 1–4; each capable of sourcing 20–40 mA or sinking 10–20 mA into resistive loads. |
| 2, 6, 9, 13 | Inverting Input | Differential inputs with PNP stage; tolerate input voltages down to −0.3 V (25°C) before clamping. |
| 3, 5, 10, 12 | Noninverting Input | Accepts common-mode signals from ground to V+ −1.5 V; enables true ground-referenced sensing. |
| 4 | Positive Supply (V+) | Single positive rail connection; supports up to 32 V; internal bias network draws current independent of V+ magnitude. |
| 11 | Ground / Negative Supply | Reference node for all four amplifiers; no separate negative rail required in single-supply mode. |
Key Features
| Feature | Design Value |
|---|---|
| Internally frequency compensated | Stable unity-gain operation without external compensation components - reduces BOM count and layout complexity. |
| Input common-mode range includes ground | Eliminates need for input biasing networks when amplifying 0 V–referenced signals (e.g., bridge sensors, current shunts). |
| Low supply current (700 μA typ) | Enables four-channel analog signal conditioning in battery-operated devices with multi-day runtime. |
| Large output voltage swing (0 V to V+−1.5 V) | Drives logic inputs directly and interfaces with ADC reference ranges without level-shifting circuitry. |
| Temperature-compensated input bias current | Maintains consistent input loading across 0°C to +70°C ambient - critical for unattended industrial monitoring systems. |
Applications
| Transducer Amplification | DC Gain Block |
|---|---|
Use Scenario: Amplifying low-level mV-range outputs from strain gauges, thermocouples, or pressure sensors in PLC analog input modules. IC Role / Device Role / Timing Role: Quad op amp provides four independent, low-drift, ground-sensing channels for simultaneous multi-sensor acquisition. Use Value: Input common-mode range to ground eliminates external bias resistors; 2 mV offset ensures <1% error in 200 mV full-scale measurements. | Use Scenario: Fixed-gain signal conditioning ahead of SAR ADCs in industrial data loggers operating from 5 V or 24 V rails. IC Role / Device Role / Timing Role: Configured as non-inverting amplifier (G = 100) with 1 MHz bandwidth to preserve step response fidelity for slow-varying process variables. Use Value: Unity-gain compensation and 100 dB open-loop gain ensure <0.1% gain error over temperature and supply variation. |
| Sensor Interface for MCU Peripherals | Single-Supply Comparator with Hysteresis |
Use Scenario: Conditioning analog outputs from ambient light, humidity, or gas sensors prior to ADC sampling in battery-powered IoT nodes. IC Role / Device Role / Timing Role: One amplifier buffers sensor output; another configures as voltage follower to drive ADC input capacitance without settling delay. Use Value: 700 μA per amplifier enables four-channel analog front-end within 3 mA total quiescent budget for 10-year coin-cell operation. | Use Scenario: Threshold detection with noise immunity for limit-switch monitoring or overvoltage alerts in 5 V embedded power supplies. IC Role / Device Role / Timing Role: Third amplifier configured as comparator with positive feedback to generate clean digital transitions from noisy analog inputs. Use Value: Rail-to-rail input allows direct comparison against 0 V reference; output swing to ground ensures reliable TTL logic low assertion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM324DR | Same electrical specs; SOIC-14 package with different tape-and-reel orientation (DR vs MTX) and RoHS compliance code (NOPB vs PB). | No functional difference; identical thermal performance and pinout; validated for same industrial temperature range (0°C to +70°C). | Select LM324DR if board-level reflow profile requires alternate carrier tape geometry or legacy procurement alignment. |
| TLV2464IDR | Higher precision (1.6 mV max offset), rail-to-rail output, but higher supply current (550 μA per amp) and narrower supply range (2.7 V to 6 V). | Not suitable for 12 V/24 V industrial rails; superior for low-voltage, high-accuracy portable instrumentation where output swing to V+ is required. | Choose TLV2464IDR only when rail-to-rail output and sub-2 mV offset are mandatory - not a drop-in replacement for LM324MTX/NOPB in wide-supply designs. |
Compared with LM324DR, LM324MTX/NOPB offers identical performance in SOIC-14 packaging with optimized tape-and-reel for high-speed pick-and-place; versus TLV2464IDR, it trades precision and rail-to-rail output for wider supply range and lower cost in industrial-grade applications.
Availability
LM324MTX/NOPB is available at Aetrix Electronics and suitable for industrial control systems, sensor signal conditioning, and embedded analog front-ends requiring stable component supply across extended production lifecycles.
Supply support for LM324MTX/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 delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and consumer markets.
LM324MTX/NOPB belongs to TI's legacy general-purpose op amp product line, engineered for cost-sensitive, robust analog signal conditioning in single-supply environments - emphasizing reliability, wide voltage operation, and ease of use over ultra-low-noise or high-speed performance.
FAQ
What is the maximum operating junction temperature for LM324MTX/NOPB?
The LM324MTX/NOPB has a specified operating junction temperature range of 0°C to +70°C. This is defined in the Recommended Operating Conditions table of the official datasheet (SNOSC16D). Exceeding +70°C risks parametric shift and long-term reliability degradation. Thermal design must ensure junction temperature remains within this limit using the SOIC-14 package's RθJA of 88°C/W under still-air conditions.
Can LM324MTX/NOPB operate from a 3.3 V supply?
Yes, LM324MTX/NOPB is rated for single-supply operation from 3 V to 32 V, making 3.3 V fully compliant. However, output swing is limited to 0 V to V+ −1.5 V - so at 3.3 V, maximum output is ~1.8 V. Input common-mode range still includes ground, enabling direct sensing of 0 V–referenced signals. Verify load requirements and gain accuracy at reduced headroom.
Does LM324MTX/NOPB support dual-supply operation?
Yes, LM324MTX/NOPB supports dual-supply operation from ±1.5 V to ±16 V. Pin 4 connects to V+, pin 11 to V− (ground or negative rail). The device maintains identical input common-mode range (including ground) and output swing (to within 1.5 V of either rail) in dual-supply mode. No configuration changes are needed - only supply connections differ from single-supply use.
What is the short-circuit current limit for LM324MTX/NOPB outputs?
LM324MTX/NOPB outputs are short-circuit protected to approximately 40 mA when sinking or sourcing into ground or V+, respectively, at 25°C and V+ = 15 V. Continuous short-circuits above 15 V risk thermal destruction due to excessive die dissipation. Datasheet section 6.6 specifies "Short Circuit to Ground" as 40–60 mA max; simultaneous shorts across multiple amplifiers require external current-limiting resistors.
Is LM324MTX/NOPB pin-compatible with LM2902 series devices?
Yes, LM324MTX/NOPB is functionally and pin-compatible with LM2902-N variants in SOIC-14 packaging. Both share identical pinout, electrical characteristics (e.g., 2 mV offset, 45 nA bias current), and recommended operating conditions. Key differences include LM2902-N's extended temperature range (−40°C to +85°C) and tighter AC specs in some parameters - but LM324MTX/NOPB remains a direct hardware replacement in 0°C to +70°C applications.
LM324MTX/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LinCMOS™
- 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:
- -
- Slew Rate:
- -
- Gain Bandwidth Product:
- 1 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 45 nA
- Voltage - Input Offset:
- 2 mV
- Current - Supply:
- 1.5mA
- Current - Output / Channel:
- 40 mA
- Voltage - Supply Span (Min):
- 3 V
- Voltage - Supply Span (Max):
- 32 V
- Operating Temperature:
- 0°C ~ 70°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-TSSOP
LM324MTX/NOPB FAQ
1.How can I place an order for LM324MTX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM324MTX/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 LM324MTX/NOPB reliable?
The price and inventory of LM324MTX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM324MTX/NOPB is usually 5 days.
3.What payment methods are accepted for LM324MTX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM324MTX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM324MTX/NOPB?
LM324MTX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM324MTX/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 LM324MTX/NOPB?
For technical support, including LM324MTX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM324MTX/NOPB requirements.
6.How does Aetrix verify that LM324MTX/NOPB is sourced from the original manufacturer or authorized distributors?
All LM324MTX/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 LM324MTX/NOPB meets industry standards.
7.What is the process for return or replacement of LM324MTX/NOPB?
All LM324MTX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM324MTX/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 LM324MTX/NOPB part is unused and in its original packaging.
Return procedure for LM324MTX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM324MTX/NOPB Tags
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LM358DT
STMicroelectronics
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LM358DR
Texas Instruments
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LM2904DR
Texas Instruments
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LM358ADR
Texas Instruments
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LM2904DGKR
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LM324DR
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MCP6006T-E/OT
Microchip Technology
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MCP6006UT-E/OT
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LM324PWR
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LM2902PWR
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LM2902DR
Texas Instruments
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LM358P
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