My Inquiry
My Account
Texas Instruments LP324NE4
- Part No.:
- LP324NE4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
LP324NE4.pdf
- Description:
- OPERATIONAL AMPLIFIER, 4 FUNC, 9
- Quantity:
- Payment:
- Shipping:
Inventory:1,448
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LP324NE4 from Texas Instruments is a quadruple ultra-low-power operational amplifier optimized for battery-powered systems, featuring 85 µA typical supply current, 2 mV typical input offset voltage, and rail-to-rail input common-mode range extending to GND - enabling single-supply operation in portable instrumentation and LCD display biasing circuits.
For engineers reviewing the LP324NE4 datasheet, LP324NE4 pinout, LP324NE4 application, or LP324NE4 equivalent, key selection considerations include its 3 V to 32 V supply range, 100 kHz gain-bandwidth product, compatibility with LM324 footprint, and guaranteed operation from 0°C to 70°C in PDIP packaging.
Technical Context
The LP324NE4 integrates four independent op-amps in a single monolithic IC with input stages designed for ultra-low input bias current (2 nA typ) and ground-sensing capability, supporting true single-supply signal conditioning without level-shifting circuitry. Its architecture prioritizes power efficiency over speed, delivering stable DC precision at sub-100 µA quiescent current per amplifier.
Each amplifier exhibits high open-loop gain (100 dB typ), 75 dB typical CMRR and PSRR, and output drive capability of ±4 mA into 10 kΩ loads. The device operates across a wide 3–32 V supply range while maintaining specified performance, making it suitable for mixed-voltage industrial and consumer systems where supply headroom varies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3 V to 32 V - supports direct integration into 5 V, 12 V, and 24 V systems without regulation |
| Quiescent Current per Amp | 85 µA typ - enables multi-month battery life in always-on sensor front-ends |
| Input Offset Voltage | 2 mV typ - ensures <±10 mV error in 1× gain configurations at room temperature |
| Input Bias Current | 2 nA typ - minimizes voltage drop across high-impedance sensor sources (e.g., thermistors, pH electrodes) |
| Gain-Bandwidth Product | 100 kHz - sufficient for DC-coupled signal conditioning, slow-settling filters, and low-frequency feedback loops |
| Common-Mode Input Range | Includes GND - allows direct interfacing with 0 V-referenced sensors and single-supply ADC drivers |
| Output Swing (RL = 10 kΩ) | VCC – 1.9 V (high), 1 V (low) - delivers usable dynamic range in 5 V systems down to ~0.8 V above GND |
Pinout & Package
LP324NE4 is supplied in a 14-pin plastic dual in-line package (PDIP-N), with 0.3-inch body width and through-hole mounting. Pin 1 is located at the top-left corner adjacent to the notch or dot marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Channel 1 Output | Amplifier A output node - drives external load or feedback network |
| 2 | Channel 1 Inverting Input | Inverting input of Amp A - sets gain and polarity in standard configurations |
| 3 | Channel 1 Non-Inverting Input | Non-inverting input of Amp A - accepts reference or sensor signal directly |
| 4 | Positive Supply (VCC) | Main power rail for all four amplifiers - decoupling capacitor required at this pin |
| 5 | Channel 2 Non-Inverting Input | Non-inverting input of Amp B - isolated from other channels for independent signal paths |
| 6 | Channel 2 Inverting Input | Inverting input of Amp B - used for differential sensing or active filtering |
| 7 | Channel 2 Output | Amplifier B output node - electrically isolated but shares VCC/GND with other amps |
| 8 | Channel 3 Output | Amplifier C output node - identical electrical characteristics to Pins 1 and 7 |
| 9 | Channel 3 Inverting Input | Inverting input of Amp C - supports cascaded or multi-stage analog processing |
| 10 | Channel 3 Non-Inverting Input | Non-inverting input of Amp C - referenced to same GND as all other inputs |
| 11 | GND | Analog ground reference for all amplifiers - must be low-impedance connection to system ground plane |
| 12 | Channel 4 Non-Inverting Input | Non-inverting input of Amp D - enables four-channel parallel signal conditioning |
| 13 | Channel 4 Inverting Input | Inverting input of Amp D - configurable as summing node or comparator input |
| 14 | Channel 4 Output | Amplifier D output node - fully functional with same drive strength and swing limits as others |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 85 µA per amplifier enables >1-year operation on CR2032 coin cells in intermittent-sampling systems |
| Ground-sensing input stage | Input common-mode range includes 0 V - eliminates need for negative supply or level-shifting in single-supply designs |
| LM324 pin compatibility | Direct PCB replacement for legacy LM324 designs without layout changes or component rework |
| Wide supply voltage range | Operates from 3 V (single-cell Li-ion) up to 32 V (industrial 24 V rails) - reduces BOM count across product families |
| Low input offset drift | 10 µV/°C - maintains calibration stability over temperature in portable medical and test equipment |
Applications
| LCD Display Biasing | Portable Sensor Signal Conditioning |
|---|---|
Use Scenario: Generating precise DC bias voltages for segment and backplane drivers in character and graphic LCD modules. IC Role / Device Role / Timing Role: Quad op-amp configured as precision voltage followers and summing amplifiers to set stable VCOM, VDD, and contrast control levels. Use Value: Enables accurate grayscale reproduction and flicker-free display operation using only one LP324NE4 instead of discrete buffers or higher-power alternatives. |
Use Scenario: Amplifying low-level outputs from thermistors, photodiodes, and strain gauges in handheld multimeters and environmental monitors. IC Role / Device Role / Timing Role: Front-end instrumentation amplifier core with programmable gain and offset correction across four independent channels. Use Value: Delivers 12-bit-equivalent linearity with <2 mV offset error while consuming <350 µA total - extending battery life beyond 6 months. |
| Consumer Audio Line-Level Buffering | Industrial Power Supply Monitoring |
Use Scenario: Driving line outputs and headphone amplifiers in MP3 players, Bluetooth speakers, and educational toys requiring low-noise analog signal routing. IC Role / Device Role / Timing Role: Unity-gain buffer isolating DAC outputs from variable cable and load impedances while preserving signal integrity. Use Value: Maintains THD+N <0.01% at 1 kHz with 10 kΩ load, eliminating audible distortion without increasing system power budget. |
Use Scenario: Monitoring multiple voltage rails (e.g., +5 V, +12 V, +24 V) and current shunt signals in programmable power supplies and battery chargers. IC Role / Device Role / Timing Role: Four-channel analog monitor providing real-time feedback to microcontroller ADC inputs via scaled and filtered signals. Use Value: Supports simultaneous measurement of up to four parameters with matched gain and offset specs - reducing calibration complexity and firmware overhead. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM324N | Higher supply current (1.2 mA per amp), wider offset voltage range (±7 mV max), no guaranteed ground-sensing input | Not suitable for ultra-low-power or true single-supply GND-referenced designs | Select LM324N only when cost is primary constraint and power budget exceeds 500 µA per channel |
| TLV2464AIDR | Lower offset (1.6 mV typ), rail-to-rail output, higher supply current (550 µA per amp), 2.5 MHz GBW | Better for AC-coupled audio or faster control loops but incompatible with long-life battery operation | Choose TLV2464AIDR when bandwidth >100 kHz and output swing to within 50 mV of rails are required |
Compared with LM324N and TLV2464AIDR, the LP324NE4 uniquely balances ultra-low power (85 µA), GND-referenced input, and LM324 pin compatibility - making it the optimal choice for retrofitting legacy designs with extended battery life and simplified supply architecture.
Availability
LP324NE4 is available at Aetrix Electronics and suitable for portable instrumentation, LCD display modules, and consumer electronics requiring stable component supply across extended production lifecycles.
Supply support for LP324NE4 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 company headquartered in Dallas, Texas, specializing in analog and embedded processing technologies with over 90 years of innovation in precision analog design.
The LP324NE4 belongs to TI's ultra-low-power operational amplifier product line, engineered specifically for energy-constrained applications where extended battery life, single-supply simplicity, and DC accuracy outweigh high-speed requirements.
FAQ
What is the operating temperature range for LP324NE4?
The LP324NE4 is rated for operation from 0°C to 70°C, matching the commercial temperature grade defined in its ordering information. This range is validated across all electrical specifications including input offset voltage, supply current, and open-loop gain. The LP324NE4 is not qualified for extended industrial or automotive temperature ranges - those are covered by the LP2902 variant. Always refer to the SLOS460A datasheet for derating curves and thermal limits.
Is LP324NE4 pin-compatible with LM324?
Yes, LP324NE4 is explicitly designed as a pin-compatible and functionally enhanced replacement for LM324 in PDIP packaging. Both share identical 14-pin DIP pinout, terminal assignments, and footprint dimensions. However, LP324NE4 improves upon LM324 with lower supply current (85 µA vs. 1.2 mA), tighter input offset voltage (2 mV typ vs. 7 mV max), and guaranteed input common-mode range to GND - enabling direct drop-in upgrades in existing LM324-based PCBs.
Does LP324NE4 support rail-to-rail output swing?
No, LP324NE4 does not provide rail-to-rail output swing. Its output voltage swing is specified as VCC – 1.9 V (high) and 1 V (low) under 10 kΩ load conditions. This means at VCC = 5 V, the output can reach approximately 3.1 V maximum and 1 V minimum. For applications requiring full rail utilization, consider TI's TLV2464 series or similar rail-to-rail output op-amps - but note these consume significantly more supply current than LP324NE4.
What is the maximum supply voltage for LP324NE4?
The absolute maximum supply voltage for LP324NE4 is ±16 V (dual supply) or 32 V (single supply), as stated in the Absolute Maximum Ratings table of the SLOS460A datasheet. For reliable continuous operation, TI specifies a recommended supply range of 3 V to 32 V. Exceeding 32 V risks permanent damage due to internal junction breakdown, and operation below 3 V may result in degraded output swing and increased input offset voltage.
Can LP324NE4 drive capacitive loads directly?
LP324NE4 is not unity-gain stable with large capacitive loads. Driving >100 pF directly may cause peaking or oscillation due to phase margin degradation. For capacitive loads exceeding 100 pF - such as long cables or LCD panel traces - TI recommends adding a small isolation resistor (e.g., 10–100 Ω) between the output and the load capacitance. This technique preserves stability while maintaining acceptable settling time for DC and low-frequency applications typical of LP324NE4 use cases.
LP324NE4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-DIP (0.300", 7.62mm)
- Packaging:
- Bulk
- Product Status:
- Active
- 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:
- 150µA
- 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:
- Through Hole
- Supplier Device Package:
- 14-PDIP
LP324NE4 FAQ
1.How can I place an order for LP324NE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for LP324NE4 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 LP324NE4 reliable?
The price and inventory of LP324NE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP324NE4 is usually 5 days.
3.What payment methods are accepted for LP324NE4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP324NE4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP324NE4?
LP324NE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP324NE4 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 LP324NE4?
For technical support, including LP324NE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP324NE4 requirements.
6.How does Aetrix verify that LP324NE4 is sourced from the original manufacturer or authorized distributors?
All LP324NE4 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 LP324NE4 meets industry standards.
7.What is the process for return or replacement of LP324NE4?
All LP324NE4 units undergo pre-shipment inspection (PSI). If there is an issue with LP324NE4, 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 LP324NE4 part is unused and in its original packaging.
Return procedure for LP324NE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LP324NE4 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
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
