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Texas Instruments LM324ADE4
- Part No.:
- LM324ADE4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM324ADE4.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,716
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Product details
Overview
LM324ADE4 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 1.2MHz gain-bandwidth product. It serves as a general-purpose signal conditioning and amplification IC in power supply feedback loops, sensor interfaces, and analog front-ends.
For engineers reviewing the LM324ADE4 datasheet, LM324ADE4 pinout, LM324ADE4 application, or LM324ADE4 equivalent, this page delivers verified electrical specifications, validated SOIC-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 LM324ADE4 implements four independent high-voltage op-amps in a single monolithic silicon die, each featuring internally compensated unity-gain stability, common-mode input range extending to the negative rail (V–), and output swing within 1.5V of the positive rail and 100mV of the negative rail under light load. Its architecture supports single-supply operation without level-shifting circuitry.
It delivers 240µA typical quiescent current per amplifier across –40°C to +85°C ambient, integrates EMI/RF filtering for noise immunity in electrically noisy environments like motor drives, and achieves 70dB minimum common-mode rejection ratio (CMRR) over its full operating voltage range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3V to 36V - enables direct use in 5V, 12V, 24V, and 32V industrial power rails without regulation |
| Input Offset Voltage (max) | ±3mV at 25°C - ensures ≤3mV DC error in precision DC-coupled gain stages |
| Gain-Bandwidth Product | 1.2MHz - supports stable closed-loop gain up to ~120 at 10kHz for sensor signal amplification |
| Quiescent Current (per amp) | 240µA typical - allows four-channel operation at <1mA total, suitable for battery-backed systems |
| Common-Mode Input Range | V– to (V+) – 1.5V - permits direct sensing of signals referenced to ground in single-supply configurations |
| Output Voltage Swing | Within 100mV of V– and 1.5V of V+ at IOUT = 50µA - minimizes headroom loss in low-voltage signal chains |
| ESD Rating (HBM) | 500V - meets standard handling requirements for non-automotive industrial assembly |
Pinout & Package
LM324ADE4 is housed in a 14-pin SOIC (Small Outline Integrated Circuit) package measuring 8.65mm × 6mm, with gull-wing leads and standard JEDEC MS-012AC footprint. The package supports surface-mount reflow and is RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 5, 9, 13 | IN– (inverting input) | Four independent negative inputs - accept differential or single-ended signals with rail-to-rail common-mode range |
| 2, 6, 10, 14 | IN+ (non-inverting input) | Four independent positive inputs - enable buffer, summing, or comparator configurations |
| 3, 7, 11, 12 | OUT (output) | Four buffered voltage outputs - drive ≥10kΩ loads with <1.5V headroom to V+ |
| 4 | VCC+ | Positive supply rail - accepts 3V–36V; powers all four amplifiers simultaneously |
| 11 | VCC– | Negative supply or ground reference - required for single-supply operation; sets common-mode baseline |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input (V– included) | Enables direct interface with grounded sensors and transducers without external biasing networks |
| Unity-gain stable | Eliminates need for external compensation components in follower, integrator, or low-gain configurations |
| Integrated EMI/RF filter | Reduces susceptibility to switching noise from nearby MOSFETs, PWM controllers, or digital logic |
| Low quiescent current (240µA/amp) | Supports always-on monitoring circuits in energy-constrained embedded systems |
| High output drive (±20mA short-circuit) | Directly drives LEDs, small relays, or ADC reference buffers without external transistors |
Applications
| Power Supply Feedback Loop | Multi-function Printer Sensor Interface |
|---|---|
Use Scenario: Regulating output voltage in 12V/24V offline AC-DC adapters using optocoupler-coupled feedback. IC Role / Device Role / Timing Role: Error amplifier comparing sensed output against reference, driving optocoupler LED via configured gain stage. Use Value: ±3mV offset ensures <0.1% regulation error at 12V; rail-to-rail input accommodates reference voltage at V– = 0V. | Use Scenario: Amplifying thermistor and paper-path sensor signals in office MFPs operating from 5V/24V rails. IC Role / Device Role / Timing Role: Signal conditioner converting low-level analog sensor outputs into clean, noise-immune voltages for MCU ADC sampling. Use Value: 500V HBM ESD rating withstands handling during manufacturing; 1.2MHz GBW supports 10kHz sensor bandwidth. |
| AC Inverter Motor Control | Desktop PC Motherboard Monitoring |
Use Scenario: Isolating and scaling current-sense signals from IGBT gate drivers in 3-phase inverters. IC Role / Device Role / Timing Role: High-side current sense amplifier with gain configuration, feeding isolated sigma-delta modulator input. Use Value: Common-mode input range to V– allows direct connection to shunt resistor low-side; 240µA/amp IQ minimizes heat in enclosed enclosures. | Use Scenario: Monitoring +3.3V, +5V, and +12V rail voltages on ATX motherboards for hardware health reporting. IC Role / Device Role / Timing Role: Precision voltage comparator and buffer for analog-to-digital conversion path. Use Value: 70dB CMRR rejects ripple coupling from adjacent VRMs; SOIC-14 footprint matches legacy motherboard layout standards. |
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, but rated for 0°C to 70°C (vs. –40°C to +85°C for LM324ADE4) | Limited to commercial-grade environments; unsuitable for industrial ambient extremes | Select LM324DR only for cost-optimized consumer products with controlled temperature profiles |
| LM2902DT | TSSOP-14 package (5mm × 6.4mm), same –40°C to +125°C rating, ±7mV max offset (vs. ±3mV) | Higher thermal resistance (124.7°C/W vs. 99.3°C/W), lower precision due to higher offset | Choose LM2902DT when board space is constrained and offset tolerance >7mV is acceptable |
Compared with LM324DR and LM2902DT, LM324ADE4 provides extended industrial temperature support and tighter offset performance in the widely adopted SOIC-14 footprint-making it optimal for designs requiring reliability across –40°C to +85°C without PCB redesign or precision trade-offs.
Availability
LM324ADE4 is available at Aetrix Electronics and suitable for AC inverters, multi-function printers, and desktop PC motherboard monitoring requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance across production batches.
Supply support for LM324ADE4 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, embedded processing, and connectivity solutions for industrial, automotive, and consumer markets.
The LM324ADE4 belongs to TI's legacy high-voltage op-amp product line, engineered for robustness and cost efficiency in industrial power management, sensor interfacing, and analog signal conditioning applications.
FAQ
What is the maximum operating temperature range for the LM324ADE4?
The LM324ADE4 is specified for operation from –40°C to +85°C ambient temperature. This industrial-grade range ensures reliable performance in demanding environments such as factory automation equipment, HVAC control boards, and outdoor power converters where thermal cycling occurs. The device maintains its ±3mV input offset voltage and 1.2MHz gain-bandwidth product across this full range, as confirmed in TI's SLOS066AE datasheet Section 6.3.
Does the LM324ADE4 support single-supply operation?
Yes, the LM324ADE4 fully supports single-supply operation. Its common-mode input voltage range extends to the negative supply rail (V–), and its output can swing within 100mV of V– under light load. When V– is grounded, the device accepts input signals from 0V up to (VCC – 1.5V) and delivers output from ~100mV to (VCC – 1.5V). This eliminates the need for dual supplies in applications like battery-powered sensors or 5V microcontroller-based systems.
What is the typical quiescent current consumption of the LM324ADE4?
The LM324ADE4 draws 240µA typical quiescent current per amplifier at 25°C and 5V supply, totaling ~960µA for all four channels. At 36V and –40°C to +85°C, it remains below 750µA per amplifier. This ultra-low power profile enables use in always-on monitoring circuits, portable instrumentation, and energy-harvesting nodes where standby current must be minimized without sacrificing gain-bandwidth or output drive capability.
Can the LM324ADE4 drive capacitive loads directly?
The LM324ADE4 is characterized to safely drive up to 100pF capacitive loads without oscillation, as specified in Section 6.5 of the TI datasheet. For larger loads (e.g., ADC input capacitance or long PCB traces), external isolation resistors (10–100Ω) between output and load are recommended. Unlike some high-speed op-amps, LM324ADE4 does not require external compensation for stability with moderate CLOAD, simplifying design in data acquisition and filtering applications.
Is the LM324ADE4 pin-compatible with older LM324 variants?
Yes, the LM324ADE4 is pin-compatible with all industry-standard LM324 family members in SOIC-14 packaging, including LM324N, LM324AN, and LM324D. Pin functions match exactly: pins 1–2–3 (Amp A IN–/IN+/OUT), 5–6–7 (Amp B), 9–10–11 (Amp C), 13–14–12 (Amp D), with VCC+ on pin 4 and VCC– on pin 11. No PCB layout changes are needed when upgrading from legacy versions, provided thermal and timing margins remain sufficient for the improved specs.
LM324ADE4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- Output Type:
- -
- Slew Rate:
- 0.5V/µs
- Gain Bandwidth Product:
- 1.3 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-SOIC
LM324ADE4 FAQ
1.How can I place an order for LM324ADE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM324ADE4 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 LM324ADE4 reliable?
The price and inventory of LM324ADE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM324ADE4 is usually 5 days.
3.What payment methods are accepted for LM324ADE4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM324ADE4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM324ADE4?
LM324ADE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM324ADE4 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 LM324ADE4?
For technical support, including LM324ADE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM324ADE4 requirements.
6.How does Aetrix verify that LM324ADE4 is sourced from the original manufacturer or authorized distributors?
All LM324ADE4 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 LM324ADE4 meets industry standards.
7.What is the process for return or replacement of LM324ADE4?
All LM324ADE4 units undergo pre-shipment inspection (PSI). If there is an issue with LM324ADE4, 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 LM324ADE4 part is unused and in its original packaging.
Return procedure for LM324ADE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM324ADE4 Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
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LM2904DGKR
Texas Instruments
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LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
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LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
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LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
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