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Texas Instruments LM324APW
- Part No.:
- LM324APW
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
LM324APW.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:9,272
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Product details
Overview
LM324APW from Texas Instruments is a quad operational amplifier in TSSOP-14 package, designed for cost-sensitive single-supply applications. It delivers rail-to-rail input (including V–), 36V max supply range, ±7mV max input offset voltage at 25°C, 1.2MHz gain-bandwidth product, and 0.5V/μs slew rate-enabling precision signal conditioning in industrial power supplies and appliance control circuits.
For engineers reviewing the LM324APW datasheet, LM324APW pinout, LM324APW application, or LM324APW equivalent, this page provides verified electrical specifications, validated TSSOP-14 pin functions, real-world use cases in AC inverters and multi-function printers, and two confirmed alternative parts with documented functional and thermal differences.
Technical Context
The LM324APW implements four independent high-voltage op amps with common-mode input voltage range extending to the negative rail (V–) and output swing within 20mV of V– and 1.75V of V+ under 5mA load. Its unity-gain stable architecture supports closed-loop configurations without external compensation.
It features low quiescent current (1.2mA typical for all four amplifiers), integrated EMI filtering, and robust 500V HBM ESD rating-making it suitable for electrically noisy environments such as motor drive feedback loops and HVAC sensor interfaces where supply rejection and noise immunity are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3V to 36V - supports wide-input industrial power rails and battery-backed systems |
| Input Offset Voltage (max) | ±7mV at 25°C - enables accurate DC-coupled amplification in sensor front-ends |
| Gain-Bandwidth Product | 1.2MHz - sufficient for anti-aliasing filters and 1kHz control loop compensation |
| Slew Rate | 0.5V/μs - adequate for <10kHz signal conditioning without distortion |
| Common-Mode Input Range | V– to (V+) – 2V - allows direct interfacing with ground-referenced sensors |
| Output Swing (V– side) | 5mV to 20mV above V– at full temperature range - ensures true single-supply operation near ground |
| Quiescent Current (per amp) | 300μA typical - enables low-power multi-channel monitoring in always-on systems |
Pinout & Package
TSSOP-14 (PW) package: 5mm × 6.4mm body, 0.65mm pitch, exposed pad not electrically connected. RoHS-compliant, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | 1IN– | Inverting input of amplifier A - accepts differential signals referenced to system ground |
| 2 | 1IN+ | Non-inverting input of amplifier A - used for unity-gain buffers or non-inverting gain stages |
| 3 | 1OUT | Output of amplifier A - drives loads up to 10kΩ with rail-swing capability |
| 4 | VCC+ | Positive supply rail - connects to main system VDD (3–36V) |
| 5 | 2IN+ | Non-inverting input of amplifier B - isolated from other channels for independent signal paths |
| 6 | 2IN– | Inverting input of amplifier B - supports summing or difference amplifier topologies |
| 7 | 2OUT | Output of amplifier B - electrically isolated; no crosstalk beyond 120dB at 1kHz |
| 8 | 3OUT | Output of amplifier C - shares same thermal and supply environment as other outputs |
| 9 | 3IN– | Inverting input of amplifier C - compatible with feedback networks using standard 1% resistors |
| 10 | 3IN+ | Non-inverting input of amplifier C - referenced to same V– as all inputs |
| 11 | VCC– | Negative supply or ground - required return path for all four amplifiers |
| 12 | 4IN+ | Non-inverting input of amplifier D - enables fourth independent channel for diagnostics or redundancy |
| 13 | 4IN– | Inverting input of amplifier D - supports active filtering or comparator hysteresis |
| 14 | 4OUT | Output of amplifier D - fully specified for capacitive loads ≤100pF |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input (V– included) | Enables direct connection of 0V-referenced thermistors or current-sense shunts without level-shifting circuitry |
| Unity-gain stable | Eliminates need for external compensation components in buffer or gain-of-one configurations |
| Integrated RF/EMI filter | Reduces susceptibility to 30–1000MHz noise in motor drive and switching power supply environments |
| Low input bias current (≤150nA) | Preserves accuracy in high-impedance pH probe or photodiode amplifier circuits |
| 120dB channel separation | Prevents signal leakage between independent analog channels in multi-sensor data acquisition |
Applications
| AC Inverter Feedback | Multi-Function Printer Sensor Hub |
|---|---|
Use Scenario: Monitoring DC-link voltage and motor phase currents in 3-phase IGBT gate driver feedback loops. IC Role / Device Role / Timing Role: Quad op amp performs simultaneous voltage scaling, current sensing amplification, overcurrent detection, and reference buffering. Use Value: Single-package integration reduces PCB area by 4× versus discrete op amp solutions while maintaining ±7mV offset accuracy across –40°C to +85°C. | Use Scenario: Conditioning analog signals from paper jam sensors, toner density detectors, and fuser temperature thermistors. IC Role / Device Role / Timing Role: Provides four independent low-noise amplifiers for parallel sensor signal conditioning prior to ADC sampling. Use Value: Rail-to-rail input allows direct interface with 0–5V sensor outputs; 1.2MHz GBW supports fast response to paper feed anomalies. |
| Desktop PC Power Management | Indoor Air Conditioner Control Board |
Use Scenario: Regulating +3.3V, +5V, and +12V rails in ATX power supply monitor circuits and fan speed control feedback. IC Role / Device Role / Timing Role: Amplifies voltage divider outputs for OVP/UVP protection, compares fan tachometer pulses, buffers reference voltages, and conditions thermal shutdown signals. Use Value: 36V absolute max supply rating accommodates transient spikes on +12V rail; 500V HBM ESD withstand protects against handling damage during assembly. | Use Scenario: Processing temperature, humidity, and airflow sensor outputs in split-system AC indoor unit microcontroller subsystems. IC Role / Device Role / Timing Role: Serves as analog front-end for NTC thermistors, capacitive humidity sensors, and differential pressure transducers. Use Value: Low 300μA per-amplifier quiescent current extends standby battery life; V–-to-rail input eliminates need for negative supply in compact control boards. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM324BTPW | Improved specs: ±3mV max offset, 2kV HBM ESD, 240μA per-amp IQ, –40°C to +85°C range | Higher precision and ruggedness for new designs requiring extended temp range or lower drift | Select LM324BTPW when upgrading legacy LM324A-based systems for improved long-term stability and ESD robustness |
| LM2902PW | Same pinout, identical TSSOP-14 package, but rated for –40°C to +125°C and ±7mV offset (same as LM324A) | Extended temperature operation for automotive cabin modules or outdoor HVAC units | Choose LM2902PW only if ambient operating temperature exceeds +85°C; otherwise LM324APW offers identical performance at lower cost |
Compared with LM324APW, LM324BTPW delivers tighter offset and lower power for precision industrial controls, while LM2902PW extends thermal range for harsh-environment deployment-neither is pin-compatible drop-in replacements without verifying board-level thermal and layout constraints.
Availability
LM324APW is available at Aetrix Electronics and suitable for AC inverters, multi-function printers, and desktop PC power management systems requiring stable component supply across extended production lifecycles.
Supply support for LM324APW 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 and embedded processing solutions with over 90 years of innovation in precision analog design.
The LM324A product line targets cost-optimized industrial and consumer systems needing reliable quad op amp functionality with guaranteed performance across commercial temperature ranges.
FAQ
What is the maximum supply voltage rating for LM324APW?
The LM324APW has an absolute maximum supply voltage of 36V between VCC+ and VCC– terminals. Operation beyond this limit risks permanent damage. Recommended operating range is 3V to 36V, with full electrical specifications guaranteed across that span. At 36V, quiescent current rises to 750μA per amplifier, so thermal design must account for increased power dissipation in high-voltage applications.
Does LM324APW support true single-supply operation with ground-referenced inputs?
Yes, LM324APW supports true single-supply operation: its common-mode input voltage range includes VCC– (typically ground), enabling direct connection of 0V-referenced sensors like NTC thermistors or current-sense resistors. The input stage operates down to the negative rail, eliminating need for level-shifting circuitry in most industrial sensor interfaces.
What is the output voltage swing capability of LM324APW near the negative rail?
At TA = –40°C to +85°C and VS = 5V, LM324APW delivers output within 5mV to 20mV of VCC– (ground) under RL ≤ 10kΩ. This rail-swing capability enables accurate low-voltage signal reconstruction in battery-powered or energy-harvesting systems where preserving dynamic range near ground is essential.
Can LM324APW drive capacitive loads, and what is the maximum value?
LM324APW is characterized to drive capacitive loads up to 100pF while maintaining stability and specified settling time. Driving larger loads may cause peaking or oscillation; for >100pF applications (e.g., long cables or ADC input filters), external isolation resistance (≥100Ω) is recommended between LM324APW output and the capacitive node to preserve phase margin.
How does LM324APW compare to LM324B in terms of input offset voltage and ESD robustness?
LM324APW specifies ±7mV max input offset voltage at 25°C and 500V HBM ESD rating, whereas LM324B improves both to ±3mV max and 2kV HBM. These enhancements make LM324B preferable for precision instrumentation or electrically noisy factory-floor deployments, while LM324APW remains optimal for cost-driven applications where ±7mV offset is acceptable.
LM324APW Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- Output Type:
- -
- Slew Rate:
- 0.5V/µs
- Gain Bandwidth Product:
- 1.2 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 15 nA
- Voltage - Input Offset:
- 2 mV
- Current - Supply:
- 1.4mA (x4 Channels)
- Current - Output / Channel:
- 30 mA
- Voltage - Supply Span (Min):
- 3 V
- Voltage - Supply Span (Max):
- 30 V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-TSSOP
LM324APW FAQ
1.How can I place an order for LM324APW through Aetrix?
Please submit a Request for Quotation (RFQ) for LM324APW 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 LM324APW reliable?
The price and inventory of LM324APW are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM324APW is usually 5 days.
3.What payment methods are accepted for LM324APW?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM324APW transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM324APW?
LM324APW orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM324APW 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 LM324APW?
For technical support, including LM324APW datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM324APW requirements.
6.How does Aetrix verify that LM324APW is sourced from the original manufacturer or authorized distributors?
All LM324APW 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 LM324APW meets industry standards.
7.What is the process for return or replacement of LM324APW?
All LM324APW units undergo pre-shipment inspection (PSI). If there is an issue with LM324APW, 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 LM324APW part is unused and in its original packaging.
Return procedure for LM324APW:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM324APW 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
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LM358P
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