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Texas Instruments LP324DRG4
- Part No.:
- LP324DRG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LP324DRG4.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,404
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Product details
Overview
LP324DRG4 from Texas Instruments is a quadruple ultra-low-power operational amplifier optimized for battery-operated systems. It delivers 85 μA typical supply current, 2 mV typical input offset voltage, and rail-to-rail input common-mode range including ground - enabling single-supply operation in portable instrumentation and LCD display biasing circuits.
For engineers reviewing the LP324DRG4 datasheet, LP324DRG4 pinout, LP324DRG4 application, or LP324DRG4 equivalent, key selection criteria include its 0°C to 70°C operating temperature range, SOIC-14 package compatibility with LM324 footprints, low 2 nA input bias current for high-impedance sensor interfacing, and wide 3–32 V supply voltage support for flexible power architecture design.
Technical Context
The LP324DRG4 implements four independent voltage-feedback op-amps in a single monolithic IC, each featuring input stages that allow common-mode voltage down to ground - critical for single-supply signal conditioning. Its architecture prioritizes quiescent current minimization over bandwidth, resulting in 100 kHz gain-bandwidth product and 50 V/ms slew rate.
It supports dual-supply (±16 V) or single-supply (3–32 V) configurations, with output swing specified as (VCC – 1.9 V) for sourcing and ≥0.7 V above ground for sinking at 350 μA load. Input offset voltage drift is 10 μV/°C, and PSRR/CMRR are both 75–90 dB across its rated temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current | 85 μA typical per amplifier - enables multi-year battery life in always-on sensor nodes |
| Input Offset Voltage | 2 mV typical - ensures <1% error in 12-bit ADC front-end gain stages at unity gain |
| Input Bias Current | 2 nA typical - preserves signal integrity when interfacing with >1 MΩ source impedances |
| Supply Voltage Range | 3 V to 32 V single supply - accommodates coin cells, Li-ion, and industrial 24 V rails |
| Gain-Bandwidth Product | 100 kHz - sufficient for DC–10 kHz signal conditioning in metering and display drivers |
| Output Swing | (VCC – 1.9 V) high / ≥0.7 V low at 350 μA - supports direct interface to 3.3 V logic without level-shifting |
| Common-Mode Input Range | Includes ground (0 V) - allows single-supply operation with AC-coupled or DC-biased inputs |
Pinout & Package
LP324DRG4 is housed in a 14-pin SOIC (D) package, 8.75 mm × 4.0 mm footprint, 1.75 mm max height, with 1.27 mm lead pitch and NIPDAU lead finish. RoHS-compliant, MSL Level-1, tape-and-reel packaging (2500 units/reel).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 7, 8, 14 | Output (OUT1–OUT4) | Amplifier outputs capable of sourcing/sinking ≥4 mA; rail-to-rail swing not supported |
| 2, 6, 9, 13 | Inverting Input (IN–) | Differential input terminals accepting signals down to ground; high impedance (2 nA bias) |
| 3, 5, 10, 12 | Non-inverting Input (IN+) | Differential input terminals with same common-mode range and bias as IN– |
| 4 | Positive Supply (VCC+) | Primary power rail connection for single- or dual-supply operation |
| 11 | Negative Supply (VCC–) | Ground reference for single-supply use; lowest potential rail in dual-supply mode |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 85 μA per amplifier enables >10-year operation on CR2032 in sleep-mode sensor nodes |
| Ground-sensing input stage | Input common-mode range includes 0 V - eliminates need for negative rail in single-supply transducer interfaces |
| LM324 pin compatibility | Direct drop-in replacement for legacy designs without PCB layout changes or schematic updates |
| Wide supply voltage tolerance | Operates from 3 V (single-cell alkaline) to 32 V (industrial bus) - reduces BOM count across product variants |
| Low input offset drift | 10 μV/°C ensures stable DC accuracy over ambient temperature shifts in unregulated environments |
Applications
| Portable Instrumentation | LCD Display Biasing |
|---|---|
Use Scenario: Battery-powered handheld multimeter measuring DC voltage and resistance. IC Role / Device Role / Timing Role: Quad op-amp configures as precision buffer, differential amplifier, reference buffer, and comparator hysteresis generator. Use Value: 85 μA total quiescent current extends battery life to >2 years; input offset <2 mV ensures ±0.1% measurement accuracy at 25°C. | Use Scenario: Segment driver for monochrome STN LCD in medical device UI panel. IC Role / Device Role / Timing Role: Generates adjustable VBIAS, VCOM, and segment voltage references using resistor networks and unity-gain buffers. Use Value: Rail-to-ground input allows direct DAC output buffering; 3–32 V supply range matches available system rails without LDO overhead. |
| Consumer Audio Accessories | Industrial Power Supply Monitoring |
Use Scenario: Signal conditioning and volume control in USB-powered headphone amplifier. IC Role / Device Role / Timing Role: Configured as active RC filter, gain stage, and DC-blocking integrator for analog audio path. Use Value: 2 nA input bias prevents capacitor leakage distortion in high-Z RC networks; 100 kHz GBW supports full audio band fidelity. | Use Scenario: Voltage/current sense amplification and fault comparator in 24 V industrial SMPS. IC Role / Device Role / Timing Role: Amplifies shunt voltage, scales feedback signals, and drives overvoltage/overcurrent latch circuits. Use Value: 32 V absolute max supply rating withstands transient spikes; PSRR >75 dB rejects switching noise coupling into sense paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM324DR | Higher 1.5 mA supply current; 7 mV max offset; no guaranteed ground-sensing input | Not suitable for ultra-low-power or true single-supply ground-referenced designs | Select only if legacy LM324 footprint reuse is mandatory and power budget allows >15× higher current |
| LP2902DR | Identical electrical specs but rated for −40°C to +85°C industrial temperature range | Required for automotive cabin modules or outdoor industrial sensors outside 0–70°C | Choose LP2902DR when extended temperature operation is needed; otherwise LP324DRG4 offers identical performance at lower cost |
Compared with LM324DR and LP2902DR, the LP324DRG4 provides optimal balance of ultra-low power, ground-sensing capability, and commercial-temperature reliability - making it the preferred choice for cost-sensitive, battery-constrained applications where −40°C operation is unnecessary.
Availability
LP324DRG4 is available at Aetrix Electronics and suitable for portable instrumentation, LCD display biasing, and consumer audio accessories requiring stable component supply and long-term manufacturability.
Supply support for LP324DRG4 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, embedded processing, and connectivity technologies with over 50 years of op-amp innovation.
The LP324DRG4 belongs to TI's ultra-low-power operational amplifier product line, designed specifically for energy-constrained, battery-operated systems where minimizing quiescent current without sacrificing DC precision is essential.
FAQ
What is the maximum operating temperature range for the LP324DRG4?
The LP324DRG4 is specified for operation from 0°C to +70°C ambient temperature. This commercial-grade range aligns with indoor consumer and industrial equipment applications. For extended-temperature use down to −40°C, the pin-compatible LP2902DR is recommended. The LP324DRG4's thermal metrics (RθJA = 140°C/W in SOIC-14) ensure safe operation within this range under typical PCB layouts.
Is the LP324DRG4 pin-compatible with the LM324?
Yes, the LP324DRG4 is fully pin-compatible with the LM324 in SOIC-14 packaging. Pin functions, numbering, and physical footprint match exactly - enabling direct replacement in existing LM324-based designs. However, unlike the LM324, the LP324DRG4 guarantees input common-mode range to ground and consumes only 85 μA per amplifier versus 1.5 mA, so layout changes are unnecessary but performance and power benefits are immediate.
Does the LP324DRG4 support rail-to-rail output swing?
No, the LP324DRG4 does not provide rail-to-rail output swing. Its output voltage swing is specified as (VCC – 1.9 V) for high-level output and ≥0.7 V above ground for low-level output at 350 μA load. This limitation is inherent to its bipolar input stage and must be accounted for in gain-setting and headroom calculations. For true rail-to-rail output, consider TI's TLV2464 or similar CMOS alternatives.
What is the ESD rating of the LP324DRG4?
The LP324DRG4 has a Human-Body Model (HBM) ESD rating of ±350 V, as specified in its official datasheet. This rating reflects standard handling robustness for general-purpose op-amps. While adequate for controlled assembly environments, additional ESD protection (e.g., series resistors or TVS diodes) is recommended for exposed I/O in end-user-accessible products. TI advises proper ESD handling procedures during PCB assembly to prevent latent damage.
Can the LP324DRG4 operate from a single 3.3 V supply?
Yes, the LP324DRG4 can operate from a single 3.3 V supply, as its minimum specified supply voltage is 3 V. At 3.3 V, output swing is approximately 0.7 V to 1.4 V (due to the ~1.9 V headroom limitation), and input common-mode range still includes ground. This makes it usable in low-voltage sensor interfaces, though designers should verify signal headroom requirements. Performance parameters like GBW and slew rate scale downward slightly at lower supplies.
LP324DRG4 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:
- 0.05V/µs
- Gain Bandwidth Product:
- 100 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 2 nA
- Voltage - Input Offset:
- 2 mV
- Current - Supply:
- 85µA (x4 Channels)
- Current - Output / Channel:
- 10 mA
- Voltage - Supply Span (Min):
- 3 V
- Voltage - Supply Span (Max):
- 32 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
LP324DRG4 FAQ
1.How can I place an order for LP324DRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for LP324DRG4 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 LP324DRG4 reliable?
The price and inventory of LP324DRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP324DRG4 is usually 5 days.
3.What payment methods are accepted for LP324DRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP324DRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP324DRG4?
LP324DRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP324DRG4 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 LP324DRG4?
For technical support, including LP324DRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP324DRG4 requirements.
6.How does Aetrix verify that LP324DRG4 is sourced from the original manufacturer or authorized distributors?
All LP324DRG4 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 LP324DRG4 meets industry standards.
7.What is the process for return or replacement of LP324DRG4?
All LP324DRG4 units undergo pre-shipment inspection (PSI). If there is an issue with LP324DRG4, 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 LP324DRG4 part is unused and in its original packaging.
Return procedure for LP324DRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LP324DRG4 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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