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Texas Instruments LM324ADRE4
- Part No.:
- LM324ADRE4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LM324ADRE4.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,196
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Product details
Overview
LM324ADRE4 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 (common-mode down to V–), 36V max supply range, ±3mV max input offset voltage at 25°C, 1.2MHz gain-bandwidth product, and 240µA typical quiescent current per amplifier - enabling precision signal conditioning in power supplies and industrial control interfaces.
For engineers reviewing the LM324ADRE4 datasheet, LM324ADRE4 pinout, LM324ADRE4 application, or LM324ADRE4 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 alternative parts with documented functional and thermal differences.
Technical Context
The LM324ADRE4 implements four independent high-voltage op amps in a single monolithic IC, each featuring unity-gain stability, common-mode input range extending to the negative rail, and output swing within 1.5V of the positive rail (at –1mA load). Its internal architecture supports operation from 3V to 36V single supply or ±18V dual supply.
It integrates no dedicated EMI filter or RF suppression circuitry - unlike the B/BA versions - and specifies 500V HBM ESD rating (not 2kV), confirming its legacy-generation design. Input bias current remains below 35nA (max) across 0°C to 70°C, and open-loop gain exceeds 25 V/mV over full temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3V to 36V single supply - supports wide-input industrial and automotive auxiliary rails without level-shifting. |
| Input Offset Voltage (max) | ±3mV at 25°C - enables accurate DC-coupled amplification in sensor front-ends with <0.1% initial error. |
| Gain-Bandwidth Product | 1.2MHz - sufficient for anti-aliasing filters, active low-pass stages up to ~100kHz, and closed-loop gain ≤100. |
| Quiescent Current (per amp) | 240µA typical - allows four-channel amplification in battery-backed systems with sub-1mA total analog core draw. |
| Common-Mode Input Range | Includes V– (ground) - permits direct interfacing with 0V-referenced transducers and single-ended DAC outputs. |
| Output Voltage Swing | Within 1.5V of V+ and 20mV of V– at 1mA - delivers usable dynamic range in 5V–24V logic-compatible systems. |
| ESD Rating (HBM) | 500V - meets standard handling requirements but not enhanced ruggedness of B-series variants. |
Pinout & Package
LM324ADRE4 is housed in a 14-pin SOIC (Small Outline Integrated Circuit) package measuring 8.65mm × 6mm, with standard JEDEC MS-012AC footprint and gull-wing leads. Thermal resistance RθJA is 99.3°C/W, suitable for natural-convection PCB layouts without forced airflow.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 5, 9, 13 | Inverting Input (–) | Accepts differential signal referenced to local ground; supports inverting amplifier, comparator, and active filter topologies. |
| 2, 6, 10, 14 | Non-inverting Input (+) | Enables non-inverting gain stages, voltage followers, and summing configurations with high-Z input. |
| 3, 7, 11, 12 | Output | Delivers amplified signal; capable of sourcing/sinking ±20mA; requires external pull-down if used as comparator. |
| 4 | VCC+ | Positive supply rail connection - must be decoupled with ≥0.1µF ceramic capacitor near pin. |
| 11 | VCC– | Negative supply or ground reference - forms return path for all four amplifiers' bias currents. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input | Common-mode range includes V–, allowing direct interface with grounded sensors and 0V-referenced sources. |
| Unity-gain stable | No external compensation required - simplifies design of buffers, integrators, and low-gain instrumentation stages. |
| High CMRR (70dB min) | Rejects noise coupled equally onto both inputs - critical for noisy industrial environments and motor-drive feedback loops. |
| Low quiescent power | Sub-1mA total supply current enables always-on monitoring circuits in energy-constrained embedded systems. |
| Four independent amps | Reduces board space vs discrete solutions; enables multi-channel signal conditioning (e.g., voltage, current, temp, fault) in one IC. |
Applications
| Power Supply Monitoring | Industrial Motor Control |
|---|---|
Use Scenario: Real-time sensing of +12V, +24V, and +48V rails in server PSUs and telecom rectifiers. IC Role / Device Role / Timing Role: Quad amplifier configured as precision voltage comparators and error amplifiers in feedback loops. Use Value: ±3mV offset ensures <0.03% voltage measurement error at 12V; rail-to-rail input accommodates 0–12V divider outputs directly. | Use Scenario: Closed-loop speed regulation and current sensing in HVAC blower drives and pump inverters. IC Role / Device Role / Timing Role: Signal conditioning for shunt-based current feedback and Hall-effect position signals. Use Value: 1.2MHz GBW supports fast current-loop response (<10µs settling); 36V rating matches inverter DC-link voltage margins. |
| Multi-function Printer Engine | Desktop PC Power Management |
Use Scenario: Toner density control, fuser temperature regulation, and paper jam detection via analog sensor fusion. IC Role / Device Role / Timing Role: Four-channel signal amplifier for thermistor, photodiode, and pressure transducer interfaces. Use Value: Single SOIC-14 replaces four discrete op amps - reduces BOM count and layout area by >60%. | Use Scenario: +3.3V, +5V, +12V, and standby 5VSB rail monitoring on ATX motherboards and VRM controllers. IC Role / Device Role / Timing Role: Quad comparator for overvoltage/undervoltage lockout and power-good signaling. Use Value: 240µA per amplifier enables continuous supervision without impacting system idle power budget. |
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, RoHS-compliant lead finish (Pb-free NiPdAu), no "E4" suffix. | No functional difference; identical pinout, thermal profile, and qualification - direct drop-in replacement. | Select LM324DR when Pb-free compliance is mandatory and TI's standard green packaging is preferred. |
| LM2902DR | Wider operating temperature range (–40°C to +125°C vs. 0°C to +70°C); same SOIC-14; 500V HBM ESD rating. | Required for under-hood automotive or outdoor industrial deployments where ambient exceeds 70°C. | Choose LM2902DR for extended-temperature designs; verify offset drift (±7µV/°C) meets system accuracy targets. |
Compared with LM324ADRE4, LM324DR offers identical performance with updated environmental compliance, while LM2902DR trades commercial temperature grade for industrial-grade thermal robustness - neither is pin-compatible with B/BA variants due to differing ESD structures and bias networks.
Availability
LM324ADRE4 is available at Aetrix Electronics and suitable for power supply monitoring, industrial motor control, multi-function printer engine subsystems, and desktop PC power management requiring stable component supply across long production lifecycles.
Supply support for LM324ADRE4 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 high-volume manufacturing reliability.
The LM324x family was engineered for cost-sensitive, general-purpose analog signal conditioning - targeting industrial automation, consumer electronics, and power management where robustness, ease of use, and broad supply voltage tolerance are essential.
FAQ
What is the maximum supply voltage for LM324ADRE4?
The LM324ADRE4 supports a maximum supply voltage of 36V across its VCC+ and VCC– terminals. This rating applies to single-supply operation (e.g., 0V to 36V) or dual-supply configurations (e.g., ±18V). Exceeding 36V risks permanent damage per absolute maximum ratings - always observe derating guidelines above 70°C ambient.
Does LM324ADRE4 feature rail-to-rail output?
No, LM324ADRE4 does not provide rail-to-rail output. Its output swings within 1.5V of VCC+ (at –1mA load) and within 20mV of VCC– (at 1mA load). For true rail-to-rail output capability, consider newer alternatives like TLV2464 or OPA4340 - LM324ADRE4 prioritizes cost and robustness over output headroom.
Can LM324ADRE4 drive capacitive loads?
LM324ADRE4 can reliably drive up to 100pF capacitive loads without oscillation, as specified in its datasheet. Larger loads require isolation resistors (e.g., 10Ω–100Ω in series with the output) or external compensation. Avoid direct connection to long cables or unbuffered ADC inputs exceeding this capacitance to maintain stability.
Is LM324ADRE4 suitable for automotive applications?
LM324ADRE4 is qualified for commercial temperature range (0°C to +70°C) and lacks AEC-Q200 qualification. It is not recommended for under-hood automotive use. For such applications, LM2902DR (–40°C to +125°C) or TLV27L4 (AEC-Q100 Grade 2) are appropriate alternatives - LM324ADRE4 suits cabin-infotainment power rails or non-safety-critical peripherals only.
What is the input bias current specification for LM324ADRE4?
The input bias current for LM324ADRE4 is –20nA typical and –250nA maximum at 25°C, rising to –500nA maximum across its full 0°C to +70°C operating range. This bipolar-input architecture results in higher bias current than CMOS op amps, necessitating low-impedance source networks (<10kΩ) to minimize offset errors in precision applications.
LM324ADRE4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm 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-SOIC
LM324ADRE4 FAQ
1.How can I place an order for LM324ADRE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM324ADRE4 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 LM324ADRE4 reliable?
The price and inventory of LM324ADRE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM324ADRE4 is usually 5 days.
3.What payment methods are accepted for LM324ADRE4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM324ADRE4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM324ADRE4?
LM324ADRE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM324ADRE4 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 LM324ADRE4?
For technical support, including LM324ADRE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM324ADRE4 requirements.
6.How does Aetrix verify that LM324ADRE4 is sourced from the original manufacturer or authorized distributors?
All LM324ADRE4 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 LM324ADRE4 meets industry standards.
7.What is the process for return or replacement of LM324ADRE4?
All LM324ADRE4 units undergo pre-shipment inspection (PSI). If there is an issue with LM324ADRE4, 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 LM324ADRE4 part is unused and in its original packaging.
Return procedure for LM324ADRE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM324ADRE4 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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