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Texas Instruments LP324DRE4
- Part No.:
- LP324DRE4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LP324DRE4.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,515
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Product details
Overview
LP324DRE4 from Texas Instruments is an ultra-low-power quadruple operational amplifier optimized for battery-operated systems, featuring 85 μA typical supply current, 2 mV typical input offset voltage, and rail-to-rail input common-mode range extending to ground. It operates from 3 V to 32 V single supply or ±16 V dual supply and is widely used in portable instrumentation and LCD display biasing circuits.
For engineers reviewing the LP324DRE4 datasheet, LP324DRE4 pinout, LP324DRE4 application, or LP324DRE4 equivalent, key selection considerations include its low quiescent current, ground-sensing input capability, wide supply range, and compatibility with LM324-based designs where power efficiency is critical.
Technical Context
The LP324DRE4 integrates four independent op-amps in a single SOIC-14 package, each with input stages designed for ultra-low input bias current (2 nA typical) and high common-mode rejection (75–90 dB). Its architecture supports true single-supply operation via input common-mode range including ground and output swing within 1.9 V of rails at load.
It delivers 50–100 V/mV large-signal open-loop gain and 100 kHz gain-bandwidth product under ±15 V conditions, prioritizing precision and power efficiency over speed-making it unsuitable for high-frequency signal conditioning but ideal for sensor buffering, DC-coupled amplification, and stable feedback control loops in low-power embedded systems.
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 and portable meters. |
| Input Offset Voltage | 2 mV typical - ensures <±10 mV DC error in unity-gain buffer configurations across 0°C to 70°C ambient. |
| Input Bias Current | 2 nA typical - minimizes voltage error across high-impedance sources like thermistors or photodiodes. |
| Supply Voltage Range | 3 V to 32 V single supply - supports direct integration into 3.3 V, 5 V, 12 V, and 24 V industrial and automotive subsystems. |
| Input Common-Mode Range | Includes ground (GND) - allows accurate sensing of signals referenced to system ground without level-shifting circuitry. |
| Output Swing | (VCC − 1.9 V) high / 1 V low (at 350 μA load) - provides usable dynamic range in single-supply 5 V systems down to ~0.8 V. |
| Gain-Bandwidth Product | 100 kHz - sufficient for anti-aliasing filters, slow-settling integrators, and DC-stable closed-loop gains up to ~100. |
Pinout & Package
LP324DRE4 is housed in a 14-pin SOIC (D) package, 3.90 mm wide, 8.65 mm long, and 1.75 mm maximum height, compliant with JEDEC MS-012AB and RoHS standards. The device uses standard SOIC lead pitch (1.27 mm) and is compatible with automated SMT assembly using IPC-7351 land patterns.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 7, 8, 14 | Output (1OUT, 2OUT, 3OUT, 4OUT) | Amplifier outputs capable of sourcing/sinking ≥4 mA; swing limited by supply rails and load. |
| 2, 6, 9, 13 | Negative Input (1IN−, 2IN−, 3IN−, 4IN−) | Inverting inputs with 2 nA typical bias current; accept DC-coupled signals down to GND. |
| 3, 5, 10, 12 | Positive Input (1IN+, 2IN+, 3IN+, 4IN+) | Non-inverting inputs with identical bias and offset specs; enable unity-gain follower configurations. |
| 4 | VCC+ | Positive supply terminal; accepts up to +32 V (single supply) or +16 V (dual supply). |
| 11 | VCC− | Negative supply or ground reference; required for single-supply operation and defines output lower limit. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low supply current | 85 μA typical per op-amp - reduces total system standby power in multi-channel sensor interfaces. |
| Ground-sensing input stage | Input common-mode range includes 0 V - eliminates need for negative supply or input biasing in single-supply microcontroller-peripheral circuits. |
| LM324 pin compatibility | Identical SOIC-14 pinout and basic functionality - enables drop-in replacement in legacy designs without PCB revision. |
| Wide supply voltage range | 3 V to 32 V single supply - supports direct connection to unregulated battery stacks, industrial 24 V rails, and USB-powered devices. |
| Low input offset drift | 10 μV/°C - maintains DC accuracy across temperature in portable medical monitors and environmental sensors. |
Applications
| Portable Instrumentation | LCD Display Biasing |
|---|---|
Use Scenario: Battery-powered handheld multimeter measuring DC voltage, resistance, and continuity. IC Role / Device Role / Timing Role: LP324DRE4 buffers high-impedance analog front-end signals and drives ADC reference scaling networks. Use Value: 85 μA quiescent current extends alkaline battery life beyond 12 months in sleep mode while maintaining 2 mV offset stability. |
Use Scenario: Driving segment/common lines in monochrome STN LCD modules for industrial HMI panels. IC Role / Device Role / Timing Role: LP324DRE4 configures as voltage followers and level shifters to generate precise VCOM and segment bias voltages. Use Value: Rail-to-ground input and output swing allow clean generation of 0–3.3 V bias ranges from a single 3.3 V supply. |
| Consumer Audio Accessories | Low-Power Sensor Signal Conditioning |
Use Scenario: Volume control and headphone driver stage in compact Bluetooth speaker docking stations. IC Role / Device Role / Timing Role: LP324DRE4 implements active RC filters and gain stages before Class-D amplifier inputs. Use Value: 100 kHz GBW and low distortion support audio bandwidth up to 20 kHz while consuming <0.5 mW per channel. |
Use Scenario: Amplifying thermistor and RTD outputs in smart thermostat sensor nodes. IC Role / Device Role / Timing Role: LP324DRE4 serves as programmable-gain instrumentation amplifier front-end with 2 nA input bias. Use Value: Sub-10 nA input bias prevents self-heating errors in high-resistance temperature sensors, preserving ±0.5°C accuracy. |
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 supply current (1.2 mA typical), wider temp range (−40°C to +85°C), no guaranteed ground-sensing input. | Better suited for mains-powered industrial controls where speed and temperature range outweigh power concerns. | Select LM324DR only when higher drive strength or extended temperature operation is required and battery life is not critical. |
| LP2902DR | Same electrical specs as LP324DRE4 but rated for −40°C to +85°C operating range and qualified for automotive use. | Preferred for automotive body electronics, engine bay sensors, and industrial equipment requiring extended thermal reliability. | Choose LP2902DR when AEC-Q100 qualification or −40°C startup capability is mandatory; otherwise LP324DRE4 suffices for commercial-grade portable gear. |
Compared with LM324DR, LP324DRE4 reduces supply current by >90% but trades off speed and temperature range; compared with LP2902DR, it shares core performance but lacks extended temperature validation-making LP324DRE4 optimal for cost-sensitive, battery-constrained commercial applications.
Availability
LP324DRE4 is available at Aetrix Electronics and suitable for portable instrumentation, LCD display biasing, and low-power sensor signal conditioning requiring stable component supply across production lifecycles.
Supply support for LP324DRE4 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 decades of expertise in precision op-amps and low-power signal chains.
The LP324DRE4 belongs to TI's ultra-low-power operational amplifier family, engineered specifically for battery-constrained applications where minimizing quiescent current without sacrificing DC precision is essential.
FAQ
What is the operating temperature range for LP324DRE4?
The LP324DRE4 is specified for operation from 0°C to +70°C ambient temperature. This commercial-grade range aligns with consumer electronics and portable instrumentation use cases. For extended industrial or automotive environments requiring −40°C to +85°C, consider the functionally identical LP2902DR instead. LP324DRE4's electrical characteristics-including offset voltage, bias current, and supply current-are guaranteed across this full 0°C to 70°C span.
Is LP324DRE4 pin-compatible with LM324?
Yes, LP324DRE4 is pin-compatible with LM324 in the SOIC-14 package. Both share identical pin numbering, terminal functions (e.g., Pin 1 = OUT1, Pin 2 = IN1−), and basic op-amp topology. However, LP324DRE4 substitutes ultra-low-power design for LM324's higher-speed, higher-current architecture-so while PCB layout and socketing are interchangeable, users must verify loop stability and bandwidth requirements match the reduced 100 kHz GBW of LP324DRE4.
Does LP324DRE4 support true single-supply operation?
Yes, LP324DRE4 supports true single-supply operation due to its input common-mode voltage range that includes ground (0 V) and output swing that reaches within 1 V of GND under light load. This allows direct interfacing with microcontroller ADCs, digital logic, and sensors referenced to system ground-eliminating the need for dual supplies or level-shifting circuitry in 3.3 V or 5 V systems.
What is the maximum supply voltage for LP324DRE4?
The absolute maximum supply voltage for LP324DRE4 is 32 V for single-supply operation or ±16 V for dual-supply operation. Recommended operating conditions specify 3 V ≤ VCC ≤ 32 V. Exceeding 32 V risks permanent damage per Absolute Maximum Ratings. At 30 V supply, LP324DRE4 maintains 75 dB PSRR and delivers full output swing, making it suitable for 24 V industrial sensor transmitters and battery-powered test equipment.
How does LP324DRE4 compare to LP2902 in terms of specifications?
LP324DRE4 and LP2902 share identical electrical specifications-including 85 μA supply current, 2 mV offset voltage, and 2 nA input bias current-but differ in qualified temperature range: LP324DRE4 is rated 0°C to +70°C, while LP2902 is rated −40°C to +85°C and qualified for automotive applications. Both are pin-compatible and functionally interchangeable where temperature requirements permit; LP2902DR is the recommended alternative if extended thermal operation is needed.
LP324DRE4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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
LP324DRE4 FAQ
1.How can I place an order for LP324DRE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for LP324DRE4 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 LP324DRE4 reliable?
The price and inventory of LP324DRE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP324DRE4 is usually 5 days.
3.What payment methods are accepted for LP324DRE4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP324DRE4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP324DRE4?
LP324DRE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP324DRE4 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 LP324DRE4?
For technical support, including LP324DRE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP324DRE4 requirements.
6.How does Aetrix verify that LP324DRE4 is sourced from the original manufacturer or authorized distributors?
All LP324DRE4 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 LP324DRE4 meets industry standards.
7.What is the process for return or replacement of LP324DRE4?
All LP324DRE4 units undergo pre-shipment inspection (PSI). If there is an issue with LP324DRE4, 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 LP324DRE4 part is unused and in its original packaging.
Return procedure for LP324DRE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LP324DRE4 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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