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Texas Instruments LM324ANSRG4
- Part No.:
- LM324ANSRG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
LM324ANSRG4.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SO
- Quantity:
- Payment:
- Shipping:
Inventory:2,627
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Product details
Overview
LM324ANSRG4 from Texas Instruments is a quadruple 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, and 240µA typical quiescent current per amplifier - enabling use in power supply monitoring, sensor signal conditioning, and industrial control interfaces.
For engineers reviewing the LM324ANSRG4 datasheet, LM324ANSRG4 pinout, LM324ANSRG4 application, or LM324ANSRG4 equivalent, this page provides verified electrical specifications, SOIC-14 terminal mapping, real-world implementation context, and validated alternative options for design-in and BOM optimization.
Technical Context
The LM324ANSRG4 implements 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 the positive rail (at –1mA load) and 20mV of the negative rail (at +1mA load). Its internal architecture supports operation from 3V to 36V single supply or ±18V dual supply.
It features integrated EMI/RF filtering, 2kV HBM ESD rating, and low input bias current (≤35nA max at 25°C), making it suitable for noisy industrial environments where precision DC coupling and robustness are required without external protection circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3V to 36V single supply - enables direct interface with 5V, 12V, 24V, and 32V industrial rails without level-shifting. |
| Input Offset Voltage (max) | ±3mV at 25°C - supports accurate DC-coupled amplification in sensor front-ends with ≤0.3% gain error at unity gain. |
| Quiescent Current (per amp) | 240µA typical - allows four-channel analog signal processing in battery-backed or energy-constrained systems. |
| Gain-Bandwidth Product | 1.2MHz - sufficient for closed-loop gains up to ~120 at 10kHz, suitable for anti-aliasing, active filtering, and slow-control loops. |
| Common-Mode Input Range | Includes V– (ground in single-supply) - eliminates need for biasing networks when amplifying near-ground signals (e.g., thermocouples, current-sense shunts). |
| Output Swing (V– side) | 20mV above V– at 1mA sink - ensures reliable low-side detection in comparator or buffer configurations driving logic or ADC reference points. |
| Slew Rate | 0.5V/µs - limits large-signal transient response but prevents instability in low-frequency feedback networks. |
Pinout & Package
LM324ANSRG4 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 compatible with automated SMT assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1IN– (Pin 2) | Inverting input of Amp 1 | Accepts differential or single-ended signals referenced to ground; supports rail-to-rail common-mode range. |
| 1IN+ (Pin 3) | Non-inverting input of Amp 1 | Used for unity-gain buffers, non-inverting amplifiers, or comparator reference inputs. |
| 1OUT (Pin 1) | Output of Amp 1 | Drives loads up to 10mA; output swing limited to 1.5V below V+ and 20mV above V– under full load. |
| VCC+ (Pin 4) | Positive supply rail | Connects to main system supply (3–36V); decoupling capacitor (0.1µF) recommended adjacent to pin. |
| 2IN+ (Pin 5) | Non-inverting input of Amp 2 | Independent channel; no crosstalk beyond 120dB typical channel separation. |
| 2IN– (Pin 6) | Inverting input of Amp 2 | Configurable as summing node or feedback point; high input impedance (>4GΩ common-mode) minimizes loading. |
| 2OUT (Pin 7) | Output of Amp 2 | Electrically isolated from other outputs; supports individual gain-setting resistors per channel. |
| VCC– (Pin 11) | Negative supply or ground | Reference for all four amplifiers; must be connected even in single-supply operation. |
| 3IN– (Pin 9) | Inverting input of Amp 3 | Supports AC/DC coupled configurations; input bias current ≤35nA avoids significant offset in high-Z sources. |
| 3IN+ (Pin 10) | Non-inverting input of Amp 3 | Used for precision reference buffering or active filter stages requiring low noise density (35nV/√Hz). |
| 3OUT (Pin 8) | Output of Amp 3 | Capable of driving 100pF capacitive loads directly; stable without external compensation. |
| 4IN– (Pin 13) | Inverting input of Amp 4 | Enables multi-stage signal conditioning (e.g., gain + offset correction) with minimal inter-stage interaction. |
| 4IN+ (Pin 12) | Non-inverting input of Amp 4 | Accepts external references or sensor outputs; common-mode rejection ≥65dB over full temperature range. |
| 4OUT (Pin 14) | Output of Amp 4 | Final stage output; THD+N = 0.001% at 1kHz ensures fidelity in audio-adjacent monitoring paths. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input common-mode range | Operates with inputs at V– (ground), eliminating input biasing components in single-supply sensor interfaces. |
| Integrated EMI/RF filter | Reduces susceptibility to conducted and radiated noise in motor drives and switching power supplies without added RC filters. |
| 2kV HBM ESD rating | Withstands handling and board-level transients in industrial assembly lines and field-replaceable modules. |
| Unity-gain stable architecture | Permits direct use in voltage followers, active filters, and comparators without external compensation networks. |
| Low quiescent current (240µA/amp) | Enables four-channel analog signal processing in always-on subsystems with <1mA total supply draw. |
Applications
| Power Supply Monitoring | Industrial Sensor Interface |
|---|---|
Use Scenario: Real-time voltage and current sensing in 24V DC distribution panels for UPS and server PSUs. IC Role / Device Role / Timing Role: Quad op amp configured as two differential amplifiers (voltage/current sense) and two comparators (overvoltage/overcurrent flags). Use Value: Single SOIC-14 replaces four discrete op amps, reducing PCB area by >60% while maintaining ±3mV offset accuracy across 0–70°C. | Use Scenario: Signal conditioning for RTD and thermistor-based temperature sensors in HVAC air handlers and refrigeration controllers. IC Role / Device Role / Timing Role: Precision instrumentation amplifier front-end (gain = 100) followed by low-pass filtering and level-shifting to MCU ADC input. Use Value: Rail-to-rail input enables direct connection to grounded sensor bridges; 35nA max input bias avoids self-heating errors in high-resistance thermistors. |
| Motor Control Feedback | Consumer Appliance Control |
Use Scenario: Analog feedback loop for BLDC motor phase current sensing and speed regulation in inverter-driven compressors. IC Role / Device Role / Timing Role: Four-channel signal conditioner: two for shunt-based current sensing, one for back-EMF zero-crossing detection, one for thermal shutdown comparator. Use Value: 36V absolute max supply withstands bus transients; 120dB channel separation prevents cross-talk between current and timing channels. | Use Scenario: Multi-function control in washing machines and dryers - water level sensing, drum rotation feedback, heater current monitoring, and door lock status. IC Role / Device Role / Timing Role: General-purpose analog signal processor: buffer for pressure transducer, comparator for lid switch, integrator for flow meter pulses, and driver for buzzer tone generation. Use Value: SOIC-14 footprint simplifies layout in space-constrained main control boards; 240µA/amp quiescent current meets IEC 62301 standby power 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; identical electrical specs except ESD rating (500V HBM vs. 2kV HBM for LM324ANSRG4). | Lacks integrated EMI filtering; less robust in electrically noisy motor drive or industrial power environments. | Select LM324DR only for benign office or consumer-grade applications where ESD stress and RF immunity are not critical. |
| LM2902DT | TSSOP-14 package (5mm × 6.4mm); same 36V supply and ±3mV offset, but rated for –40°C to +125°C operating range. | Higher temperature grade suits automotive cabin modules and outdoor inverters where ambient exceeds 85°C. | Choose LM2902DT when extended temperature operation is mandatory; note TSSOP requires finer pitch reflow profile than SOIC. |
Compared with LM324DR and LM2902DT, LM324ANSRG4 offers superior ESD robustness (2kV HBM) and built-in EMI filtering for industrial power electronics, while retaining the industry-standard SOIC-14 footprint and 0–70°C commercial temperature range - balancing reliability, compatibility, and cost.
Availability
LM324ANSRG4 is available at Aetrix Electronics and suitable for power supply monitoring, industrial sensor interfaces, and motor control feedback systems requiring stable component supply, long-term manufacturability, and TI-qualified traceability.
Supply support for LM324ANSRG4 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 ICs, embedded processors, and connectivity solutions for industrial, automotive, and personal electronics markets.
The LM324x family was engineered as a drop-in upgrade path for legacy LM324 designs, delivering improved offset voltage, ESD resilience, and EMI immunity while maintaining pin and function compatibility - targeting cost-sensitive industrial control and power management applications.
FAQ
What is the maximum supply voltage for LM324ANSRG4?
The LM324ANSRG4 supports an absolute maximum supply voltage of 40V, but its recommended operating range is 3V to 36V for single-supply or ±2.5V to ±18V for dual-supply configurations. Operating at 36V ensures full specification compliance across the 0°C to 70°C commercial temperature range, and the device maintains rail-to-rail input capability and 1.2MHz gain-bandwidth product within this range. Exceeding 36V may degrade long-term reliability.
Does LM324ANSRG4 support rail-to-rail output swing?
No, LM324ANSRG4 does not provide rail-to-rail output swing. Its output can swing to within 1.5V of the positive rail (V+) at –1mA load and to within 20mV of the negative rail (V–) at +1mA load. This limitation is inherent to its bipolar input stage and output stage architecture. For true rail-to-rail output, consider TI's TLV2464 or similar CMOS alternatives - but LM324ANSRG4's 20mV V–-side swing remains sufficient for most comparator and buffer applications in 5V–24V systems.
Is LM324ANSRG4 pin-compatible with older LM324 variants?
Yes, LM324ANSRG4 is fully pin-compatible with all standard LM324 variants in SOIC-14 packaging, including LM324N, LM324AN, and LM324DR. It retains identical pinout, electrical interface, and functional behavior, while improving key parameters: input offset voltage (±3mV max vs. ±7mV max for legacy LM324), ESD rating (2kV HBM vs. 500V HBM), and integrated EMI filtering. No PCB or schematic changes are required for drop-in replacement.
What is the operating temperature range of LM324ANSRG4?
The LM324ANSRG4 is specified for operation from 0°C to +70°C ambient temperature, consistent with the commercial-grade LM324 family. Its electrical characteristics - including ±3mV max input offset voltage, 240µA typical quiescent current per amplifier, and 1.2MHz gain-bandwidth product - are guaranteed across this full range. For extended temperature applications (–40°C to +125°C), TI recommends the LM2902B variant in TSSOP or SOIC packages.
Can LM324ANSRG4 drive capacitive loads?
Yes, LM324ANSRG4 is characterized to drive up to 100pF capacitive loads while maintaining stability and specified settling time (4µs to 0.1%). This capability supports direct connection to ADC input capacitors, long PCB traces, or small bypass networks without external isolation resistors. However, loads exceeding 100pF may induce peaking or ringing; for >100pF, add a series resistor (10–100Ω) between the output and load to preserve phase margin and step response integrity.
LM324ANSRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-SOIC (0.209", 5.30mm 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-SO
LM324ANSRG4 FAQ
1.How can I place an order for LM324ANSRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM324ANSRG4 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 LM324ANSRG4 reliable?
The price and inventory of LM324ANSRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM324ANSRG4 is usually 5 days.
3.What payment methods are accepted for LM324ANSRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM324ANSRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM324ANSRG4?
LM324ANSRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM324ANSRG4 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 LM324ANSRG4?
For technical support, including LM324ANSRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM324ANSRG4 requirements.
6.How does Aetrix verify that LM324ANSRG4 is sourced from the original manufacturer or authorized distributors?
All LM324ANSRG4 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 LM324ANSRG4 meets industry standards.
7.What is the process for return or replacement of LM324ANSRG4?
All LM324ANSRG4 units undergo pre-shipment inspection (PSI). If there is an issue with LM324ANSRG4, 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 LM324ANSRG4 part is unused and in its original packaging.
Return procedure for LM324ANSRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM324ANSRG4 Tags
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LM358DT
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LM358DR
Texas Instruments
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LM2904DR
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LM358ADR
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LM2904DGKR
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LM324PWR
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LM358P
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