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Texas Instruments LM224ADRG4
- Part No.:
- LM224ADRG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM224ADRG4.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:143
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Product details
Overview
LM224ADRG4 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), 3V to 36V supply operation, ±3mV max input offset voltage at 25°C, and unity-gain stability - used in power supply monitoring, sensor signal conditioning, and desktop PC motherboard voltage regulation.
For engineers reviewing the LM224ADRG4 datasheet, LM224ADRG4 pinout, LM224ADRG4 application, or LM224ADRG4 equivalent, key selection criteria include guaranteed input common-mode range to V–, output swing within 1.5V of rails at ±1mA load, 1.2MHz gain-bandwidth product, 0.5V/μs slew rate, and compatibility with legacy LM224/LM324 designs without layout changes.
Technical Context
The LM224ADRG4 implements four independent high-voltage op amps with bipolar input stages, enabling operation from single-supply (e.g., +5V to +36V with ground reference) or split-supply configurations. Its input stage supports common-mode voltages down to the negative rail (V–), and outputs swing to within 1.5V of each supply rail under 1mA load.
It features 1.2MHz unity-gain bandwidth, 0.5V/μs slew rate, and open-loop gain of 50V/mV (100dB typical), optimized for DC-coupled amplification, active filtering, and comparator functions where precision and wide supply range are critical but ultra-low noise or high speed are not required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3V to 36V - supports single-supply industrial systems (e.g., 24V PLC I/O) and dual-supply lab equipment without external regulators. |
| Input Offset Voltage (max) | ±3mV at 25°C - enables accurate DC amplification in sensor front-ends (e.g., thermistor or strain gauge bridges) without trimming. |
| Common-Mode Input Range | Includes V– (negative rail) - allows direct sensing of signals referenced to ground in single-supply configurations. |
| Output Voltage Swing | Within 1.5V of rails at ±1mA - delivers usable dynamic range in 5V or 12V systems without rail-to-rail output circuitry. |
| Gain-Bandwidth Product | 1.2MHz - sufficient for anti-aliasing filters, motor current feedback loops, and audio pre-amplification up to ~10kHz. |
| Slew Rate | 0.5V/μs - limits large-signal settling time to ~4μs for 2V steps, suitable for moderate-speed control loops. |
| Quiescent Current per Amp | 240μA typical at 5V - enables low-power multi-channel signal conditioning in battery-backed or energy-conscious designs. |
Pinout & Package
LM224ADRG4 uses a 14-pin SOIC (D package), 8.65mm × 6mm body size, with standard quad op amp pinout compatible across LMx24 family variants.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 5, 9, 13 | Inverting Input (−) | Accepts differential input signals; referenced to internal bias network; supports common-mode down to V–. |
| 2, 6, 10, 14 | Non-inverting Input (+) | High-impedance input node (4GΩ || 1.5pF); enables high-gain non-inverting configurations with minimal loading. |
| 3, 7, 11, 12 | Output | Class-AB output stage drives ≥10kΩ loads; short-circuit protected; sinks up to 20mA, sources up to −30mA. |
| 4 | VCC+ | Positive supply terminal; accepts up to 36V; decoupling capacitor recommended near pin. |
| 11 | VCC− | Negative supply or ground reference; must be connected even in single-supply use to establish bias point. |
Key Features
| Feature | Design Value |
|---|---|
| Drop-in replacement for LM224/LM324 | Pin-compatible and functionally identical to legacy versions - no PCB or firmware changes required during upgrade. |
| EMI and RF filtering | Integrated on-die filters suppress interference from switching power supplies and radio-frequency noise in noisy industrial environments. |
| Low input bias current | ≤35nA max across –25°C to +85°C - minimizes voltage error in high-impedance sensor interfaces (e.g., pH electrodes or photodiode transimpedance amps). |
| ESD robustness | 2kV HBM rating - withstands handling and board-level ESD events without protection diodes or external clamping. |
| Unity-gain stable | No external compensation needed - simplifies design of buffers, integrators, and active filters without stability analysis. |
Applications
| Power Supply Monitoring | Desktop PC Motherboard |
|---|---|
Use Scenario: Real-time monitoring of +12V, +5V, and +3.3V rails in ATX power supplies using resistive dividers and comparator thresholds. IC Role / Device Role / Timing Role: Quad op amp configured as four independent voltage comparators with hysteresis, detecting overvoltage/undervoltage faults. Use Value: Leverages rail-to-rail input capability to sense near-ground and near-rail voltages without level-shifting, reducing component count and BOM cost. | Use Scenario: Fan speed control loop and VRM (Voltage Regulator Module) feedback in x86-based motherboards. IC Role / Device Role / Timing Role: Amplifier for thermal sensor signal conditioning and error amplifier in analog voltage feedback path of multiphase buck converters. Use Value: Stable 1.2MHz GBW and low quiescent current enable precise analog regulation while minimizing heat generation on densely packed boards. |
| Multi-function Printer | Indoor Air Conditioner |
Use Scenario: Paper jam detection via optical sensor amplification and toner density measurement using photoconductor feedback. IC Role / Device Role / Timing Role: Signal conditioner for photodiode and thermistor inputs feeding ADCs in printer engine control MCU. Use Value: Input bias current ≤35nA prevents loading of high-impedance photodiode circuits, preserving SNR and measurement linearity across temperature. | Use Scenario: Indoor unit temperature sensing, compressor current monitoring, and fan motor control interface in split-system HVAC units. IC Role / Device Role / Timing Role: Front-end amplifier for NTC thermistors and shunt-based current sensing, interfacing with HVAC system microcontroller. Use Value: Wide 3V–36V supply range allows direct use from HVAC 24VAC-derived DC rails, eliminating dedicated LDOs for analog signal chains. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM224DR | Same electrical specs and SOIC-14 package; differs only in tape-and-reel packaging (no G4 suffix) and RoHS compliance marking. | No functional difference; identical performance in all operating conditions and temperature ranges. | Select LM224DR when lead-free finish is not required or when purchasing from distributors with bulk reel inventory. |
| LM324ADR | Higher max offset voltage (±7mV), narrower temp range (0°C to 70°C), same pinout and supply range. | Not rated for industrial ambient (–25°C to +85°C); unsuitable for outdoor AC units or factory-floor printers. | Choose LM324ADR only for cost-driven commercial-grade applications where extended temperature operation is unnecessary. |
Compared with LM224DR and LM324ADR, the LM224ADRG4 provides guaranteed industrial temperature support (–25°C to +85°C), tighter offset voltage (±3mV), and enhanced ESD robustness (2kV HBM), making it the preferred choice for reliability-critical embedded systems where long-term parametric stability matters.
Availability
LM224ADRG4 is available at Aetrix Electronics and suitable for power supply monitoring, desktop PC motherboard design, and multi-function printer development requiring stable component supply, consistent parametric performance across production lots, and long-term industrial temperature qualification.
Supply support for LM224ADRG4 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 amp design and broad industrial market reach.
The LMx24 family was engineered for cost-sensitive, high-volume applications demanding robustness, wide supply range, and drop-in compatibility - targeting power management, appliance control, and infrastructure equipment where reliability and manufacturability outweigh ultra-high-performance requirements.
FAQ
What is the maximum operating temperature range for LM224ADRG4?
The LM224ADRG4 is specified for operation from –25°C to +85°C, meeting industrial temperature grade requirements. This range is confirmed in TI's official datasheet Section 6.3 Recommended Operating Conditions for LM224xx devices, and distinguishes it from commercial-grade LM324 variants (0°C to 70°C) and automotive-grade LM2902B (–40°C to +125°C). The full temperature range applies across all key parameters including input offset voltage, CMRR, and output drive capability.
Does LM224ADRG4 support single-supply operation with input signals at ground potential?
Yes, LM224ADRG4 supports true single-supply operation with inputs extending to the negative rail (V–), which is typically grounded. Its common-mode input voltage range includes V– across the full supply range (3V to 36V), enabling direct connection of sensors or signal sources referenced to ground - such as thermistors, bridge transducers, or DAC outputs - without level-shifting circuitry. This is explicitly verified in Section 6.5 Electrical Characteristics for LM324B and LM324BA (applicable to LM224A per family documentation).
What is the output voltage swing capability of LM224ADRG4 at 5V supply and 1mA load?
At VS = 5V and IOUT = ±1mA, the LM224ADRG4 delivers a minimum output swing of 1.4V above V– (ground) and 1.4V below VCC+ (5V), i.e., from 1.4V to 3.6V. This is derived from the "Voltage output swing from rail" specification in Table 6.5: 1.4V min at IOUT = –1mA (positive rail) and 0.75V max at IOUT = 1mA (negative rail), confirming usable 2.2V peak-to-peak linear range under moderate load - sufficient for driving ADC references or comparator thresholds in 5V systems.
Is LM224ADRG4 pin-compatible with older LM224 variants like LM224N?
Yes, LM224ADRG4 is fully pin-compatible with all standard LM224 variants including LM224N (PDIP-14), LM224K (SOIC-14), and LM224KA (SOIC-14, improved specs). It shares identical pin configuration (per Figure 5-1 and Table 5-1), electrical behavior, and SOIC-14 footprint. The "A" suffix denotes improved offset voltage (±3mV vs. ±7mV in base LM224), and "G4" indicates green/RoHS-compliant packaging - both enhancements that preserve mechanical and functional interchangeability.
What is the typical quiescent current per amplifier in LM224ADRG4 at 36V supply?
The typical quiescent current per amplifier in LM224ADRG4 is 300μA at 36V supply and 25°C, with a maximum of 750μA across –25°C to +85°C. This value is documented in Section 6.5 Electrical Characteristics for LM324B and LM324BA (applicable to LM224A per family data sheet), under "IQ Quiescent current per amplifier" with test condition VS = 36V, IO = 0A. Total device supply current is thus ~1.2mA typical at 36V, enabling efficient multi-channel analog signal chains in high-voltage industrial systems.
LM224ADRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm 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:
- -25°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
LM224ADRG4 FAQ
1.How can I place an order for LM224ADRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM224ADRG4 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 LM224ADRG4 reliable?
The price and inventory of LM224ADRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM224ADRG4 is usually 5 days.
3.What payment methods are accepted for LM224ADRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM224ADRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM224ADRG4?
LM224ADRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM224ADRG4 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 LM224ADRG4?
For technical support, including LM224ADRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM224ADRG4 requirements.
6.How does Aetrix verify that LM224ADRG4 is sourced from the original manufacturer or authorized distributors?
All LM224ADRG4 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 LM224ADRG4 meets industry standards.
7.What is the process for return or replacement of LM224ADRG4?
All LM224ADRG4 units undergo pre-shipment inspection (PSI). If there is an issue with LM224ADRG4, 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 LM224ADRG4 part is unused and in its original packaging.
Return procedure for LM224ADRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM224ADRG4 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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