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Texas Instruments LM224KDRG4
- Part No.:
- LM224KDRG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM224KDRG4.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,830
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Product details
Overview
LM224KDRG4 from Texas Instruments is a quad operational amplifier in SOIC-14 package, designed for cost-sensitive industrial and consumer applications requiring rail-to-rail input (V– included) and robust output drive (±20mA per channel). It operates from 3V to 30V single supply or ±15V dual supply, delivers 1.2MHz gain-bandwidth, 0.5V/μs slew rate, and achieves ±3mV max input offset voltage at 25°C - enabling precision signal conditioning in power supplies, motor controls, and sensor interfaces.
For engineers reviewing the LM224KDRG4 datasheet, LM224KDRG4 pinout, LM224KDRG4 application, or LM224KDRG4 equivalent, this page provides verified electrical specifications, validated SOIC-14 pin mapping, 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 LM224KDRG4 belongs to the legacy LMx24 family and implements four independent high-voltage op amps with common-mode input range extending to the negative rail (V–) and differential input voltage tolerance up to ±32V. Its internal architecture supports unity-gain stability and features low quiescent current (1.2mA typical for all four amplifiers), making it suitable for battery-powered and energy-conscious designs.
Unlike B-series variants (e.g., LM324B), the LM224KDRG4 does not include integrated EMI/RF filters or enhanced ESD protection (HBM = 500V), and its operating ambient temperature range is –25°C to +85°C - confirmed by TI's SLOS066AE datasheet Section 6.3 for LM224xx devices.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3V to 30V single supply (or ±15V dual); enables compatibility with 5V, 12V, and 24V industrial rails |
| Input Offset Voltage (max) | ±3mV at 25°C; supports DC-coupled sensing with <0.1% error in 1V full-scale systems |
| Gain-Bandwidth Product | 1.2MHz; sufficient for closed-loop gains up to 120 at 10kHz without phase margin loss |
| Slew Rate | 0.5V/μs; limits maximum undistorted 10kHz sine wave amplitude to ~8Vpp |
| Output Current (per amp) | ±20mA source/sink; drives 150Ω loads directly or interfaces with logic-level inputs |
| Common-Mode Input Range | Includes V– (ground in single-supply); allows direct interfacing with 0V-referenced sensors |
| Operating Temperature | –25°C to +85°C; qualified for indoor consumer and commercial equipment environments |
Pinout & Package
LM224KDRG4 uses a 14-pin SOIC (D) package measuring 8.65mm × 6mm, with standard JEDEC outline and gull-wing leads compatible with automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1IN– (Pin 2) | Inverting input of Amp 1 | Accepts feedback or signal inversion; referenced to V– for single-supply operation |
| 1IN+ (Pin 3) | Non-inverting input of Amp 1 | Direct connection point for reference or sensor signals; CMVR includes ground |
| 1OUT (Pin 1) | Output of Amp 1 | Drives loads up to ±20mA; output swing within 1.5V of rails at light load |
| VCC+ (Pin 4) | Positive supply | Connects to main system rail (3–30V); decoupling capacitor required near pin |
| 2IN+ (Pin 5) | Non-inverting input of Amp 2 | Independent channel input; no crosstalk with Amp 1 (120dB isolation at 1kHz) |
| 2IN– (Pin 6) | Inverting input of Amp 2 | Used for summing, difference, or transimpedance configurations |
| 2OUT (Pin 7) | Output of Amp 2 | Same drive capability as Amp 1; shares VCC+ and VCC– with other channels |
| VCC– (Pin 11) | Negative supply / ground | Return path for all four amplifiers; must be low-impedance in single-supply setups |
| 3IN– (Pin 9) | Inverting input of Amp 3 | Enables multi-stage filtering or signal conditioning chains |
| 3IN+ (Pin 10) | Non-inverting input of Amp 3 | Supports buffered reference generation or comparator hysteresis |
| 3OUT (Pin 8) | Output of Amp 3 | Capable of driving LED indicators or small relays directly |
| 4IN– (Pin 13) | Inverting input of Amp 4 | Used in active filter topologies or current-sense amplification |
| 4IN+ (Pin 12) | Non-inverting input of Amp 4 | Accepts bias voltages or external references for level-shifting |
| 4OUT (Pin 14) | Output of Amp 4 | Final stage output; supports rail-to-rail swing into 10kΩ loads |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input (V– included) | Enables direct interface with ground-referenced sensors and DAC outputs without level-shifting circuitry |
| High output drive (±20mA) | Eliminates need for external buffer transistors when driving LEDs, relays, or ADC reference buffers |
| Unity-gain stable | Guarantees stable operation down to gain = 1 without external compensation components |
| Low quiescent current (1.2mA total) | Extends battery life in portable instrumentation and reduces thermal load in sealed enclosures |
| 120dB channel separation | Prevents crosstalk between independent signal paths in multi-channel data acquisition systems |
Applications
| Power Supply Monitoring | Motor Control Feedback |
|---|---|
Use Scenario: Real-time monitoring of +12V and +5V rails in desktop PC motherboards and server PSUs. IC Role / Device Role / Timing Role: Quad op amp configured as voltage comparators and error amplifiers for overvoltage/undervoltage detection. Use Value: Leverages rail-to-rail input to sense near-zero and near-rail voltages; ±20mA output drives optocouplers directly for isolated fault signaling. | Use Scenario: Closed-loop speed regulation in brushless DC fans and HVAC blower motors. IC Role / Device Role / Timing Role: Amplifies Hall-effect sensor outputs and conditions PWM feedback signals for microcontroller ADC input. Use Value: 1.2MHz GBW supports accurate 20kHz PWM reconstruction; low offset ensures <1% speed error across temperature. |
| Multi-function Printer Sensors | AC Inverter Analog Interface |
Use Scenario: Ink level detection, paper jam sensing, and toner density measurement in office MFPs. IC Role / Device Role / Timing Role: Signal conditioner for resistive and capacitive sensors feeding 10-bit microcontroller ADCs. Use Value: Single-supply operation (5V) simplifies board design; 0.5V/μs slew rate prevents distortion in slow-moving analog sensor outputs. | Use Scenario: Voltage and current scaling in 3-phase solar string inverters and variable-frequency drives. IC Role / Device Role / Timing Role: Isolated analog front-end amplifier for shunt-based current sensing and DC-link voltage monitoring. Use Value: ±32V differential input rating withstands transient spikes on motor phases; –25°C to +85°C rating matches industrial enclosure requirements. |
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; wider temp range (0°C to 70°C); identical electrical specs except 500V HBM ESD rating | Valid for commercial-grade desktop PCs and printers but not extended-temp industrial control panels | Select when cost is primary constraint and ambient temperature stays below 70°C |
| LM2902DR | SOIC-14; –40°C to +125°C operating range; same 3V–30V supply; ±7mV max offset (vs. ±3mV for LM224KDRG4) | Required for automotive cabin modules and outdoor HVAC units where cold-start operation is critical | Choose when extended temperature range outweighs tighter offset requirement |
Compared with LM324DR and LM2902DR, the LM224KDRG4 offers the tightest input offset voltage (±3mV) among legacy SOIC-14 quad op amps while maintaining –25°C to +85°C qualification - making it optimal for precision analog signal chains in commercial industrial equipment where thermal drift must be minimized but extreme temperatures are not encountered.
Availability
LM224KDRG4 is available at Aetrix Electronics and suitable for power supply monitoring, motor control feedback, and multi-function printer sensor conditioning requiring stable component supply and long-term industrial availability.
Supply support for LM224KDRG4 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 LM224KDRG4 belongs to TI's legacy LMx24 op amp product line, engineered for cost-effective, general-purpose analog signal conditioning in commercial and industrial equipment where reliability, wide supply range, and rail-to-rail input are essential.
FAQ
What is the maximum supply voltage for LM224KDRG4?
The LM224KDRG4 supports a maximum supply voltage of 30V for single-supply operation or ±15V for dual-supply use, as specified in Section 6.1 Absolute Maximum Ratings of the TI SLOS066AE datasheet. Exceeding 30V risks permanent damage due to junction breakdown, and operation above this limit voids warranty and reliability guarantees.
Does LM224KDRG4 have rail-to-rail output capability?
No, the LM224KDRG4 does not provide rail-to-rail output swing. Its output typically swings within 1.5V of the positive rail and 20mV of the negative rail under 10kΩ load, as shown in Section 6.7 Electrical Characteristics. For true rail-to-rail output, consider newer alternatives like TLV2464 or LMV324, not the LM224KDRG4.
What is the operating temperature range of LM224KDRG4?
The LM224KDRG4 is rated for operation from –25°C to +85°C, consistent with the LM224xx designation per TI's SLOS066AE datasheet Section 6.3. This range qualifies it for commercial and indoor industrial applications but excludes automotive under-hood or outdoor telecom deployments requiring –40°C start-up.
Can LM224KDRG4 replace LM324 in existing designs?
Yes, the LM224KDRG4 is pin-compatible and functionally equivalent to the LM324 in SOIC-14 packaging, sharing identical pinout, electrical characteristics, and recommended operating conditions. No PCB or schematic changes are needed, though users should verify that the –25°C to +85°C temperature range meets system requirements.
What is the input bias current specification for LM224KDRG4?
The LM224KDRG4 exhibits a maximum input bias current of –300nA at 25°C and –500nA across its full operating temperature range (–25°C to +85°C), per Section 6.7 of the TI SLOS066AE datasheet. This bipolar-input architecture results in higher bias current than CMOS op amps but ensures robustness against ESD and latch-up in noisy industrial environments.
LM224KDRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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:
- 20 nA
- Voltage - Input Offset:
- 3 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:
- -25°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
LM224KDRG4 FAQ
1.How can I place an order for LM224KDRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM224KDRG4 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 LM224KDRG4 reliable?
The price and inventory of LM224KDRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM224KDRG4 is usually 5 days.
3.What payment methods are accepted for LM224KDRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM224KDRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM224KDRG4?
LM224KDRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM224KDRG4 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 LM224KDRG4?
For technical support, including LM224KDRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM224KDRG4 requirements.
6.How does Aetrix verify that LM224KDRG4 is sourced from the original manufacturer or authorized distributors?
All LM224KDRG4 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 LM224KDRG4 meets industry standards.
7.What is the process for return or replacement of LM224KDRG4?
All LM224KDRG4 units undergo pre-shipment inspection (PSI). If there is an issue with LM224KDRG4, 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 LM224KDRG4 part is unused and in its original packaging.
Return procedure for LM224KDRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM224KDRG4 Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
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LM2904DR
Texas Instruments
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LM358ADR
Texas Instruments
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LM2904DGKR
Texas Instruments
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LM324DR
Texas Instruments
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MCP6006T-E/OT
Microchip Technology
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MCP6006UT-E/OT
Microchip Technology
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LM324PWR
Texas Instruments
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LM2902PWR
Texas Instruments
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LM2902DR
Texas Instruments
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LM358P
Texas Instruments
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