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Texas Instruments LM324MT/NOPB
- Part No.:
- LM324MT/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
LM324MT/NOPB.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:19,170
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Product details
Overview
LM324MT/NOPB from Texas Instruments is a low-power, quad operational amplifier designed for single-supply operation from 3 V to 32 V (or ±1.5 V to ±16 V), featuring 1 MHz unity-gain bandwidth, 100 dB DC open-loop gain, and rail-to-rail input common-mode range including ground. It delivers 700 μA typical supply current per amplifier and supports output swing from 0 V to V+ − 1.5 V - enabling direct interfacing with 5-V digital logic in sensor signal conditioning and industrial control systems.
For engineers reviewing the LM324MT/NOPB datasheet, LM324MT/NOPB pinout, LM324MT/NOPB application, or LM324MT/NOPB equivalent, this device is selected for cost-sensitive, low-power analog signal processing where ground-sensing capability, wide supply flexibility, and four independent amplifiers in one SOIC-14 package are required - especially in transducer interfaces, DC gain blocks, and battery-powered instrumentation.
Technical Context
The LM324MT/NOPB uses a PNP-input stage enabling true ground-referenced input operation and differential input voltage tolerance up to the full supply rail. Its internal frequency compensation ensures stable unity-gain operation without external components across temperature and supply variations.
It employs a class-A/class-B hybrid output stage that sources up to 40 mA and sinks up to 20 mA while maintaining low quiescent current. Input bias current (45 nA typ) and offset voltage (2 mV max) are temperature-compensated, supporting stable DC-coupled designs over 0°C to +70°C operating junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | Single supply: 3 V to 32 V; dual supply: ±1.5 V to ±16 V - enables direct use with 5-V logic rails and eliminates need for split supplies. |
| Unity-Gain Bandwidth | 1 MHz - supports audio-frequency amplification and moderate-speed signal conditioning without instability. |
| DC Open-Loop Gain | 100 dB - provides high precision in closed-loop configurations such as instrumentation and sensor amplification. |
| Input Offset Voltage | 2 mV max (25°C) - ensures minimal DC error in precision DC gain stages and level-shifting circuits. |
| Supply Current per Amplifier | 700 μA typ - enables multi-channel analog front-ends in power-constrained applications like portable sensors. |
| Input Common-Mode Range | 0 V to V+ − 1.5 V - allows direct sensing of signals referenced to ground, critical for single-supply transducer interfaces. |
| Output Voltage Swing | 0 V to V+ − 1.5 V (RL ≥ 10 kΩ) - delivers near-rail output drive compatible with TTL/CMOS logic thresholds. |
Pinout & Package
LM324MT/NOPB is housed in a 14-pin SOIC (Small Outline Integrated Circuit) package with nominal body dimensions of 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 40 mA / sinking 20 mA into resistive loads. |
| 2, 6, 9, 13 | Inverting Input | Negative inputs for channels 1–4; accept signals down to ground with no level-shifting required. |
| 3, 5, 10, 12 | Noninverting Input | Positive inputs for channels 1–4; support rail-to-rail common-mode input range including ground. |
| 4 | Positive Supply (V+) | Single positive supply connection; accepts 3–32 V; powers all four amplifiers simultaneously. |
| 11 | Ground / Negative Supply (GND) | Reference node for single-supply operation; also serves as negative rail in dual-supply mode. |
Key Features
| Feature | Design Value |
|---|---|
| Internally compensated unity-gain stability | Eliminates need for external compensation capacitors - simplifies PCB layout and reduces BOM count in basic gain stages. |
| Ground-sensing input stage | Presents true 0-V input common-mode capability - enables direct connection of thermocouples, bridge sensors, and other ground-referenced transducers. |
| Low 700-μA supply current per op amp | Supports four-channel analog signal conditioning in battery-powered devices with <3-mA total quiescent draw. |
| Temperature-compensated input bias current | Maintains stable 45-nA bias current across 0°C to +70°C - minimizes drift-induced errors in high-impedance sensor interfaces. |
| Rail-compatible output swing | Drives outputs to within 1.5 V of V+ and to ground - facilitates direct interfacing with 5-V logic families without level shifters. |
Applications
| Transducer Amplifier | DC Gain Block |
|---|---|
Use Scenario: Amplifying low-level mV outputs from load cells, RTDs, or strain gauges in industrial weighing systems. IC Role / Device Role / Timing Role: Quad op amp configured as precision instrumentation amplifier front-end and buffer stage. Use Value: Ground-referenced inputs eliminate need for input biasing networks; 2-mV offset ensures sub-0.1% gain error at 100× gain. |
Use Scenario: Providing fixed 10× non-inverting gain for analog sensor outputs before ADC sampling in PLC I/O modules. IC Role / Device Role / Timing Role: Single-chip solution implementing four independent DC-coupled gain stages with shared supply and ground. Use Value: 100-dB open-loop gain guarantees <0.01% gain error; 700-μA per channel enables thermal management in dense layouts. |
| Single-Supply Signal Conditioning | Logic-Compatible Interface Driver |
Use Scenario: Converting 0–100 mV thermocouple signals to 0–5 V range for microcontroller ADC input in HVAC controllers. IC Role / Device Role / Timing Role: First-stage amplifier with reference-biased noninverting input and rail-to-rail output swing. Use Value: Input common-mode range includes ground allows direct thermocouple connection; output swings to 0 V ensures full 5-V ADC utilization. |
Use Scenario: Driving TTL/CMOS inputs from analog comparators or DAC outputs in embedded control boards. IC Role / Device Role / Timing Role: Buffer and level translator ensuring clean 0–5 V transitions with 40-mA source capability. Use Value: Output can sink 20 mA and source 40 mA - meets TTL fan-out requirements without external transistors. |
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 and pinout; SOIC-14 package but with different tape-and-reel packaging and RoHS compliance marking. | No functional difference; identical performance in all operating conditions and temperature ranges (0°C to +70°C). | Select LM324DR when procurement requires TI's standard distribution packaging or alternate reel configuration. |
| TLV2464IDR | Higher precision (1.6-mV max offset), rail-to-rail I/O, 2.5-mA supply current per amplifier, 6.4-MHz GBW - optimized for higher-speed, lower-error designs. | Not drop-in: requires layout changes due to different pinout and higher supply current; unsuitable for ultra-low-power use cases. | Choose TLV2464IDR only when design demands <1.6-mV offset, rail-to-rail output, or >1-MHz bandwidth - not for cost- or power-constrained legacy replacements. |
Compared with LM324DR, LM324MT/NOPB offers identical functionality with NOPB (No Lead Finish) plating for enhanced solderability and reliability; versus TLV2464IDR, it trades bandwidth and precision for significantly lower power and broader supply compatibility - making it optimal for general-purpose, low-cost, single-supply analog signal chains.
Availability
LM324MT/NOPB is available at Aetrix Electronics and suitable for industrial control systems, sensor interface modules, and battery-powered instrumentation requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for LM324MT/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 heritage in precision op amps and broad industrial portfolio coverage.
LM324MT/NOPB belongs to TI's legacy low-power quad op amp product line, engineered for cost-effective, robust analog signal conditioning in single-supply environments - particularly targeting industrial automation, test equipment, and consumer electronics where reliability and ease of use are paramount.
FAQ
What is the maximum operating junction temperature for LM324MT/NOPB?
The LM324MT/NOPB has a specified operating junction temperature range of 0°C to +70°C. This is defined in the Recommended Operating Conditions section of the official datasheet (SNOSC16D). Exceeding +70°C may cause parameter degradation or functional failure. Thermal design must ensure junction temperature remains within this limit under worst-case power dissipation - typically requiring board-level copper area or airflow for sustained 32-V operation across all four amplifiers.
Does LM324MT/NOPB support dual-supply operation?
Yes, LM324MT/NOPB supports dual-supply operation from ±1.5 V to ±16 V. The device functions identically in dual-supply mode as in single-supply mode, with input common-mode range extending from −1.5 V to V+ − 1.5 V and output swing from −1.5 V to V+ − 1.5 V. This flexibility allows reuse of the same part number across both single-rail (e.g., 5-V systems) and split-rail (e.g., ±15-V test equipment) designs without circuit redesign.
Can LM324MT/NOPB drive capacitive loads directly?
LM324MT/NOPB can safely drive up to 50 pF capacitive loads in unity-gain non-inverting configuration without oscillation. Larger capacitive loads require isolation via a series resistor (typically 100 Ω to 1 kΩ) between the output and the load to maintain phase margin. Direct connection of >50-pF loads - such as long cables or unbuffered ADC inputs - risks instability and ringing, as confirmed in the "Capacitive Loads" subsection of the Detailed Description (Section 7.4) in the datasheet.
Is LM324MT/NOPB pin-compatible with LM2902 variants?
LM324MT/NOPB is pin-compatible with LM2902-N in SOIC-14 packages, sharing identical pinout, supply voltage range (3 V to 26 V), and functional behavior. However, LM2902-N specifies extended temperature range (−40°C to +85°C) and slightly relaxed AC specs (e.g., lower CMRR), while LM324MT/NOPB is rated for 0°C to +70°C. For designs operating outside 0°C–70°C, LM2902-N is the appropriate selection - but PCB layout and schematic remain unchanged.
What is the typical input bias current of LM324MT/NOPB at room temperature?
The typical input bias current of LM324MT/NOPB is 45 nA at 25°C, as specified in Section 6.6 of the SNOSC16D datasheet. This value is temperature-compensated and remains stable across the full 0°C to +70°C operating range. It reflects the PNP-input stage design and is independent of supply voltage - enabling predictable performance in high-impedance sensor interfaces without requiring bias current cancellation networks.
LM324MT/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LinCMOS™
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- 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
LM324MT/NOPB FAQ
1.How can I place an order for LM324MT/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM324MT/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 LM324MT/NOPB reliable?
The price and inventory of LM324MT/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM324MT/NOPB is usually 5 days.
3.What payment methods are accepted for LM324MT/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM324MT/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM324MT/NOPB?
LM324MT/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM324MT/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 LM324MT/NOPB?
For technical support, including LM324MT/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM324MT/NOPB requirements.
6.How does Aetrix verify that LM324MT/NOPB is sourced from the original manufacturer or authorized distributors?
All LM324MT/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 LM324MT/NOPB meets industry standards.
7.What is the process for return or replacement of LM324MT/NOPB?
All LM324MT/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM324MT/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 LM324MT/NOPB part is unused and in its original packaging.
Return procedure for LM324MT/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM324MT/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
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LM2904DGKR
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LM324DR
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MCP6006T-E/OT
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MCP6006UT-E/OT
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LM324PWR
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LM2902PWR
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LM2902DR
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LM358P
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