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Texas Instruments LM324KAPWRG4
- Part No.:
- LM324KAPWRG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
LM324KAPWRG4.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,082
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Product details
Overview
LM324KAPWRG4 from Texas Instruments is a quad operational amplifier in SOIC-14 package, designed for cost-sensitive single-supply applications. It delivers rail-to-rail input (V– to V+ – 1.5V), 1.2 MHz gain-bandwidth, 0.5 V/μs slew rate, and 240 μA per amplifier quiescent current across –40°C to +85°C. It is widely used in power supply monitoring, sensor signal conditioning, and industrial control feedback loops.
For engineers reviewing the LM324KAPWRG4 datasheet, LM324KAPWRG4 pinout, LM324KAPWRG4 application, or LM324KAPWRG4 equivalent, this page provides verified electrical specifications, validated 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 LM324KAPWRG4 belongs to the legacy LM324 family with enhanced B-series compatibility - it is not a B-version but shares the same SOIC-14 footprint and core architecture as LM324B. Its internal topology uses NPN input stages enabling common-mode input down to V–, and its unity-gain stable design supports direct use in voltage followers and transimpedance configurations without external compensation.
Unlike LM2902 variants, LM324KAPWRG4 is rated for 0°C to +70°C operation (per TI's LM324xx designation) and features 7 mV max input offset voltage at 25°C, 100 dB PSRR, and 120 dB channel separation - making it suitable for moderate-precision DC-coupled amplification where ESD robustness (500 V HBM) and low-cost manufacturability are prioritized over ultra-low drift or extended temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3 V to 30 V - supports single-supply operation from USB-powered systems up to industrial 24 V rails |
| Input Offset Voltage (max) | ±7 mV at 25°C - sets baseline DC error in precision gain stages; requires trimming or calibration in sub-mV accuracy designs |
| Gain-Bandwidth Product | 1.2 MHz - enables stable closed-loop gain of 12 at 100 kHz or unity gain up to 1.2 MHz |
| Slew Rate | 0.5 V/μs - limits full-power bandwidth to ~80 kHz for 10 Vpp output; adequate for sensor buffering, not audio |
| Quiescent Current (per amp) | 0.7–1.2 mA total (four amps) - enables low-power operation in battery-backed monitoring circuits |
| Common-Mode Input Range | V– to (V+) – 1.5 V - allows direct sensing of ground-referenced signals without level-shifting circuitry |
| Output Swing (from rail) | 1.5 V from V+ and 20 mV from V– at 1 mA load - supports near-rail output in single-supply comparator or driver roles |
Pinout & Package
LM324KAPWRG4 is housed in a 14-pin SOIC (D-package), 8.65 mm × 6 mm body size with standard gull-wing leads. Thermal resistance RθJA = 99.3°C/W enables operation up to +85°C ambient without forced airflow in typical PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 5, 9, 13 | Inverting Input (–) | Accepts differential input referenced to V–; high-impedance node (4 GΩ || 1.5 pF) |
| 2, 6, 10, 14 | Non-inverting Input (+) | Supports rail-to-rail common-mode range; compatible with ground-sensed inputs |
| 3, 7, 8, 12 | Output | Capable of sourcing –20 mA / sinking 10 mA; drives 10 kΩ loads to within 1.5 V of V+ |
| 4 | VCC+ | Positive supply terminal; must be decoupled with ≥0.1 μF ceramic capacitor close to pin |
| 11 | VCC– | Ground or negative rail connection; serves as reference for all inputs and outputs in single-supply mode |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input capability | Enables direct interface with 0 V-referenced sensors (e.g., thermistors, current shunts) without external biasing |
| Unity-gain stability | Eliminates need for external compensation components in follower, integrator, or active filter configurations |
| High channel separation (120 dB) | Minimizes crosstalk between amplifiers sharing one die - critical in multi-channel data acquisition |
| Low quiescent current (240 μA/amp typ) | Reduces system-level power budget in always-on monitoring nodes powered by 3.3 V or 5 V rails |
| Robust ESD rating (500 V HBM) | Withstands handling and board-level assembly without additional protection diodes in non-hostile environments |
Applications
| Power Supply Monitoring | Industrial Sensor Interface |
|---|---|
Use Scenario: Real-time voltage regulation feedback in desktop PC ATX power supplies and multi-output server PSUs. IC Role / Device Role / Timing Role: Quad op-amp configured as error amplifiers comparing sensed output voltages against reference rails. Use Value: Enables four independent regulation loops (3.3 V, 5 V, 12 V, –12 V) on a single low-cost IC, reducing BOM count and layout area. | Use Scenario: Signal conditioning for RTD, thermistor, and bridge-based pressure sensors in HVAC controllers. IC Role / Device Role / Timing Role: Instrumentation amplifier front-end stage providing gain, filtering, and level-shifting before ADC input. Use Value: Single-supply operation eliminates dual-rail generation; rail-to-rail input captures full sensor swing from 0 V to VREF. |
| AC Inverter Control | Multi-function Printer Engine |
Use Scenario: Current sensing and motor phase feedback in residential solar string inverters and variable-frequency drives. IC Role / Device Role / Timing Role: Isolated current amplifier and analog comparator for overcurrent protection logic. Use Value: High CMRR (70 dB min) rejects PWM noise; 1.2 MHz GBW supports fast transient response in closed-loop current control. | Use Scenario: Toner density control, paper path sensing, and fuser temperature regulation in laser MFPs. IC Role / Device Role / Timing Role: Analog front-end for photodiode arrays, thermistor networks, and stepper motor current feedback. Use Value: Four independent amplifiers replace discrete op-amp solutions, simplifying thermal management and improving long-term calibration stability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM324DR | Same SOIC-14 package; identical electrical specs except 500 V HBM ESD rating and 0°C to +70°C temp grade | No functional difference; LM324KAPWRG4 includes green (lead-free) and RoHS-compliant marking per TI's G4 suffix | Select LM324DR for legacy designs requiring identical form-fit-function with no RoHS documentation overhead |
| LM2902PWR | SOIC-14; wider operating range (–40°C to +125°C); 3 mV max offset (vs. 7 mV); 500 V HBM ESD | Better suited for automotive cabin modules or outdoor AC units where extended temperature reliability is mandatory | Choose LM2902PWR when ambient exceeds +70°C or when tighter DC precision is required without trimming |
Compared with LM324DR, LM324KAPWRG4 offers identical performance with certified RoHS compliance and traceable green material content; versus LM2902PWR, it trades extended temperature and lower offset for lower unit cost and qualification maturity in consumer-grade industrial equipment.
Availability
LM324KAPWRG4 is available at Aetrix Electronics and suitable for power supply monitoring, industrial sensor interface, and AC inverter control requiring stable component supply across production lifecycles.
Supply support for LM324KAPWRG4 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 for industrial, automotive, and personal electronics markets.
The LM324 family was engineered for cost-effective, general-purpose amplification in single-supply systems - emphasizing ease of use, wide voltage range, and proven reliability in high-volume manufacturing environments.
FAQ
What is the maximum operating temperature for LM324KAPWRG4?
The LM324KAPWRG4 is specified for operation from 0°C to +70°C ambient temperature, consistent with the LM324xx product grouping. This differs from LM2902 variants rated to +125°C and LM324B versions qualified to +85°C. Derating is required above +70°C; junction temperature must remain ≤150°C under actual PCB thermal conditions.
Does LM324KAPWRG4 support rail-to-rail output?
No, LM324KAPWRG4 does not provide rail-to-rail output. Its output swings to within 1.5 V of V+ and 20 mV of V– at 1 mA load. For true rail-to-rail output, consider modern alternatives like TLV2464 or MCP6004. LM324KAPWRG4's strength lies in rail-to-rail *input*, enabling ground-referenced signal acquisition.
Can LM324KAPWRG4 replace LM324N in a PDIP-14 socket?
No - LM324KAPWRG4 uses a SOIC-14 (D-package) with 1.27 mm pitch, while LM324N uses PDIP-14 (N-package) with 2.54 mm pitch. They are not physically interchangeable. A PCB redesign or adapter is required. Electrical behavior is functionally identical, but thermal and layout constraints differ significantly.
What is the input bias current specification for LM324KAPWRG4?
LM324KAPWRG4 exhibits input bias current of –20 nA to –250 nA at 25°C (typical –150 nA), increasing to –500 nA over full temperature range. This NPN-input architecture results in higher bias current than CMOS op-amps but ensures robustness in noisy industrial environments and compatibility with high-impedance sources up to ~100 kΩ.
Is LM324KAPWRG4 pin-compatible with LM324B variants?
Yes - LM324KAPWRG4 shares identical SOIC-14 pinout and basic functionality with LM324B and LM324BA, including VCC+, VCC–, and all four amplifier I/O terminals. However, LM324B offers improved specs: ±3 mV offset (vs. ±7 mV), 240 μA quiescent current (same), and 2 kV HBM ESD (vs. 500 V). Drop-in replacement is electrically valid but may require revalidation for precision or ruggedness-critical designs.
LM324KAPWRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- 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
LM324KAPWRG4 FAQ
1.How can I place an order for LM324KAPWRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM324KAPWRG4 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 LM324KAPWRG4 reliable?
The price and inventory of LM324KAPWRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM324KAPWRG4 is usually 5 days.
3.What payment methods are accepted for LM324KAPWRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM324KAPWRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM324KAPWRG4?
LM324KAPWRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM324KAPWRG4 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 LM324KAPWRG4?
For technical support, including LM324KAPWRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM324KAPWRG4 requirements.
6.How does Aetrix verify that LM324KAPWRG4 is sourced from the original manufacturer or authorized distributors?
All LM324KAPWRG4 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 LM324KAPWRG4 meets industry standards.
7.What is the process for return or replacement of LM324KAPWRG4?
All LM324KAPWRG4 units undergo pre-shipment inspection (PSI). If there is an issue with LM324KAPWRG4, 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 LM324KAPWRG4 part is unused and in its original packaging.
Return procedure for LM324KAPWRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM324KAPWRG4 Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
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