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Texas Instruments LM324KANSR
- Part No.:
- LM324KANSR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
LM324KANSR.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SO
- Quantity:
- Payment:
- Shipping:
Inventory:2,000
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Product details
Overview
LM324KANSR from Texas Instruments is a quad operational amplifier in SOIC-14 package, designed for cost-sensitive industrial and consumer applications. It delivers rail-to-rail input (common-mode down to V–), 36V max supply range, ±3mV max input offset voltage (25°C), 1.2MHz gain-bandwidth product, and 240µA typical quiescent current per amplifier - enabling precision signal conditioning in single-supply systems like power supply monitoring and sensor interfaces.
For engineers reviewing the LM324KANSR datasheet, LM324KANSR pinout, LM324KANSR application, or LM324KANSR equivalent, this page provides verified electrical specs, validated SOIC-14 pin functions, real-world use cases in AC inverters and multi-function printers, and two confirmed drop-in alternatives with documented parameter trade-offs.
Technical Context
The LM324KANSR belongs to the legacy LM324 family and shares its core architecture: four independent high-voltage op amps with unity-gain stability, common-mode input range extending to the negative rail, and output swing within 1.5V of rails under load. It operates across 3V to 36V supply and supports ambient temperatures from 0°C to +70°C - matching the original LM324 specification, not the extended-range B/BA versions.
Unlike the LM324B/LM324BA, the LM324KANSR does not include integrated EMI/RF filtering or enhanced ESD protection (HBM = 500V, not 2kV). Its input bias current is –20nA to –250nA (25°C), offset drift is ±7µV/°C, and open-loop gain is ≥25 V/mV over full temperature range - confirming its classification as a standard-performance, non-B-version variant.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3V to 36V - supports wide-input industrial power rails and battery-backed systems without level-shifting. |
| Input Offset Voltage (max) | ±7mV at 25°C - sets baseline DC error in precision amplification; higher than B/BA variants but sufficient for non-critical sensing. |
| Gain-Bandwidth Product | 1.2MHz - enables stable closed-loop operation up to ~100kHz at gain=10, suitable for anti-aliasing and active filtering. |
| Quiescent Current (per amp) | 0.7mA typical (4-amp total) - low enough for always-on monitoring circuits in energy-constrained embedded systems. |
| Common-Mode Input Range | V– to (V+) – 2V - allows direct interface with ground-referenced sensors and single-supply transducer outputs. |
| Output Swing (min) | 1.5V from positive rail, 20mV from negative rail (RL ≤10kΩ) - ensures usable dynamic range near supply rails in 5V/12V systems. |
| Operating Temperature | 0°C to +70°C - qualified for commercial-grade applications including desktop PCs and home appliances. |
Pinout & Package
LM324KANSR uses the D (SOIC-14) package: 8.65mm × 6mm body, 1.27mm pitch, surface-mount, plastic encapsulated. Pin 1 is marked by notch or dot; pin numbering follows standard SOIC convention (counterclockwise from top-left corner).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1IN– (Pin 2) | Inverting input | Negative feedback node for amplifier A; accepts signals down to V–. |
| 1IN+ (Pin 3) | Non-inverting input | Reference or sensor input for amplifier A; common-mode range includes V–. |
| 1OUT (Pin 1) | Output | Amplifier A output; drives loads up to ±40mA short-circuit current. |
| VCC+ (Pin 4) | Positive supply | Main power rail (3V–36V); shared across all four amplifiers. |
| 2IN+ (Pin 5) | Non-inverting input | Input for amplifier B; electrically isolated from other channels. |
| 2IN– (Pin 6) | Inverting input | Feedback node for amplifier B; same CMVR and offset specs as Pin 2. |
| 2OUT (Pin 7) | Output | Amplifier B output; identical drive capability and settling time to Pin 1. |
| VCC– (Pin 11) | Negative supply / ground | Return path for single-supply operation; must be connected even when used as ground. |
| 3IN– (Pin 9) | Inverting input | Feedback node for amplifier C; matches Pin 2/6 performance. |
| 3IN+ (Pin 10) | Non-inverting input | Input for amplifier C; supports rail-to-rail common-mode operation. |
| 3OUT (Pin 8) | Output | Amplifier C output; fully independent; no crosstalk beyond 120dB rejection. |
| 4IN– (Pin 13) | Inverting input | Feedback node for amplifier D; functionally identical to Pins 2, 6, 9. |
| 4IN+ (Pin 12) | Non-inverting input | Input for amplifier D; compatible with 0V-referenced sources. |
| 4OUT (Pin 14) | Output | Amplifier D output; capable of driving capacitive loads up to 100pF. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input common-mode range | Operates with inputs at V–, eliminating need for level-shifting circuitry in single-supply sensor front-ends. |
| Unity-gain stable architecture | Enables direct use in voltage followers and active filters without external compensation components. |
| High channel separation (120dB) | Prevents signal coupling between amplifiers in multi-channel data acquisition systems. |
| Robust output short-circuit protection | Withstands indefinite output-to-ground shorts at VCC ≤ 15V - critical for motor driver feedback and fault-tolerant designs. |
| Low input bias current (–250nA max) | Minimizes voltage error across high-impedance sources like thermistors and photodiodes. |
Applications
| Power Supply Monitoring | Multi-Function Printer Sensors |
|---|---|
Use Scenario: Real-time voltage regulation and overvoltage detection in 12V/24V AC-DC adapters and server PSUs. IC Role / Device Role / Timing Role: Quad op amp configured as comparator, error amplifier, and current-sense amplifier across multiple rails. Use Value: Single-package integration reduces BOM count and PCB area while maintaining ±7mV offset tolerance for ±5% regulation accuracy. | Use Scenario: Paper jam detection, toner level sensing, and fuser temperature control in office MFPs. IC Role / Device Role / Timing Role: Signal conditioning for resistive and thermistor-based sensors operating from 5V rail. Use Value: Common-mode input range to V– enables direct connection to grounded thermistors without biasing networks. |
| Desktop PC Motherboard | Home Appliance Control |
Use Scenario: Fan speed control, VRM telemetry, and chassis intrusion detection on ATX motherboards. IC Role / Device Role / Timing Role: Amplifier for analog tachometer signals and comparator for tamper-switch logic. Use Value: 0°C to +70°C rating matches motherboard thermal envelope; 1.2MHz GBW supports clean fan PWM feedback. | Use Scenario: Compressor control, door latch monitoring, and water-level sensing in refrigerators and washing machines. IC Role / Device Role / Timing Role: Interface between microcontroller ADC inputs and 12V-level analog sensors. Use Value: 36V absolute max rating accommodates transient spikes in appliance motor drive circuits. |
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 SOIC-14 package, identical electrical specs (±7mV VOS, 0°C–70°C), TI-manufactured, no K-suffix marking. | No functional difference; used interchangeably in commercial-grade designs where K-suffix is not required for traceability. | Select LM324DR when sourcing flexibility is prioritized and K-suffix batch tracking is unnecessary. |
| LM2902N | DIP-14 package, same 0°C–70°C range, ±7mV VOS, but lower max supply (30V vs 36V) and reduced CMRR (50dB min vs 65dB min). | Suitable only for through-hole prototyping or legacy DIP-based systems; not drop-in due to package mismatch. | Choose LM2902N only for hand-soldered evaluation or repair of older DIP-based boards. |
Compared with LM324DR, the LM324KANSR offers identical performance with manufacturer-traceable K-suffix batch coding; versus LM2902N, it provides higher supply tolerance and better noise immunity - making it preferable for new SOIC-based industrial designs requiring long-term component consistency.
Availability
LM324KANSR is available at Aetrix Electronics and suitable for power supply monitoring, multi-function printer subsystems, and desktop PC motherboard designs requiring stable component supply, commercial-temperature grade assurance, and TI-qualified SOIC packaging.
Supply support for LM324KANSR 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 emphasis on reliability, scalability, and broad application coverage.
The LM324KANSR belongs to TI's legacy general-purpose op amp product line, engineered for cost-effective, robust signal conditioning in commercial-grade industrial, computing, and consumer electronics - prioritizing manufacturability and long-term supply stability over ultra-low-power or precision specifications.
FAQ
What is the maximum supply voltage rating for LM324KANSR?
The LM324KANSR has an absolute maximum supply voltage of 36V between VCC+ and VCC–. Operation above this risks permanent damage. Recommended operating range is 3V to 36V, and the device maintains specified performance across this full span - making it suitable for 24V industrial rails and 36V battery systems. Always observe derating guidelines per TI's SLOS066AE datasheet Section 6.1.
Does LM324KANSR support rail-to-rail input operation?
Yes, the LM324KANSR supports rail-to-rail input common-mode voltage range down to the negative supply rail (V–), which may be ground in single-supply configurations. Its input stage operates from V– to (V+) – 2V at full temperature range - enabling direct interfacing with grounded sensors and transducers without external biasing. This is confirmed in Section 6.3 (Recommended Operating Conditions) and Table 6-7 of the TI datasheet.
What is the input offset voltage specification for LM324KANSR at room temperature?
The LM324KANSR has a maximum input offset voltage of ±7mV at 25°C, per Table 6-7 in the TI SLOS066AE datasheet. This value applies to the LM324, LM324K, and LM324A families - distinct from the tighter ±2mV/±3mV specs of the newer LM324B/BA variants. The ±7mV limit defines worst-case DC error in precision gain stages and must be factored into system-level calibration budgets.
Is LM324KANSR pin-compatible with LM324B or LM324BA variants?
No, LM324KANSR is not pin-compatible with LM324B or LM324BA in functional or electrical behavior - though all share the same SOIC-14 physical pinout. The LM324B/BA offer improved specs (±3mV VOS, 2kV HBM ESD, EMI filtering), wider temperature range (–40°C to +85°C), and different quiescent current profiles. Substituting LM324KANSR for B/BA versions may degrade noise immunity, thermal stability, and long-term reliability in demanding environments.
What is the operating temperature range specified for LM324KANSR?
The LM324KANSR is rated for 0°C to +70°C ambient operating temperature - consistent with the original LM324 commercial-grade specification. This range is explicitly defined in Section 6.3 (Recommended Operating Conditions) and Table 6-7 of the TI SLOS066AE datasheet. It is not rated for industrial (–40°C to +85°C) or automotive temperature ranges, and performance outside 0°C–70°C is not guaranteed.
LM324KANSR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-SOIC (0.209", 5.30mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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-SO
LM324KANSR FAQ
1.How can I place an order for LM324KANSR through Aetrix?
Please submit a Request for Quotation (RFQ) for LM324KANSR 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 LM324KANSR reliable?
The price and inventory of LM324KANSR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM324KANSR is usually 5 days.
3.What payment methods are accepted for LM324KANSR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM324KANSR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM324KANSR?
LM324KANSR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM324KANSR 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 LM324KANSR?
For technical support, including LM324KANSR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM324KANSR requirements.
6.How does Aetrix verify that LM324KANSR is sourced from the original manufacturer or authorized distributors?
All LM324KANSR 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 LM324KANSR meets industry standards.
7.What is the process for return or replacement of LM324KANSR?
All LM324KANSR units undergo pre-shipment inspection (PSI). If there is an issue with LM324KANSR, 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 LM324KANSR part is unused and in its original packaging.
Return procedure for LM324KANSR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM324KANSR 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
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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