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Texas Instruments LP324PWR
- Part No.:
- LP324PWR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
LP324PWR.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,723
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Product details
Overview
LP324PWR from Texas Instruments is an ultra-low-power quadruple operational amplifier designed for battery-operated systems requiring wide supply range and ground-sensing inputs. It delivers 85 μA typical supply current, 2 mV typical input offset voltage, and 2 nA typical input bias current across 0°C to 70°C, enabling precision signal conditioning in portable instrumentation and LCD displays.
For engineers reviewing the LP324PWR datasheet, LP324PWR pinout, LP324PWR application, or LP324PWR equivalent, this page provides verified technical context, real-world design meaning of key specs, validated TSSOP-14 pin functions, application-specific implementation value, and two confirmed alternative parts with documented functional and thermal differences.
Technical Context
The LP324PWR implements four independent high-input-impedance op-amps in a single monolithic IC, each featuring rail-to-rail output swing (within 1.9 V of rails), input common-mode range extending to ground, and stable operation from 3 V to 32 V single supply. Its architecture prioritizes low quiescent current over bandwidth-gain-bandwidth product is 100 kHz at ±15 V-making it unsuitable for high-speed signal paths but ideal for sensor buffering and DC-coupled control loops.
Thermal design is constrained by its TSSOP-14 package, which exhibits 154 °C/W junction-to-ambient thermal resistance. Electrical behavior remains consistent across its full operating temperature range (0°C to 70°C), with input offset drift limited to 10 μV/°C and PSRR maintained at ≥75 dB under varying supply conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply current | 85 μA typical per amplifier - enables multi-month battery life in coin-cell-powered sensors and handheld meters. |
| Input offset voltage | 2 mV typical - supports accurate DC amplification without external trimming in 12-bit ADC front-ends. |
| Input bias current | 2 nA typical - preserves signal integrity when interfacing high-impedance sources like thermistors or photodiodes. |
| Supply voltage range | 3 V to 32 V single supply - accommodates both low-voltage microcontrollers and industrial 24 V rails without level-shifting. |
| Output voltage swing | (VCC − 1.9) V high / 1 V low - provides usable dynamic range for analog comparators and active filters near ground reference. |
| Gain bandwidth product | 100 kHz - sufficient for anti-aliasing filters below 10 kHz and slow-loop feedback in power supply monitors. |
| Common-mode rejection | ≥75 dB - rejects noise on shared ground traces in mixed-signal PCBs with digital switching activity. |
Pinout & Package
TSSOP-14 package (PW), 5.0 mm × 4.4 mm footprint, 1.2 mm max height, lead pitch 0.65 mm, RoHS-compliant NiPdAu/Sn finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1IN− | Negative input | Inverting input of amplifier A - connects to feedback network in standard inverting configurations. |
| 1IN+ | Positive input | Non-inverting input of amplifier A - accepts sensor signals referenced to ground due to rail-to-ground input capability. |
| 1OUT | Output | Amplifier A output - drives loads up to 10 mA source/sink while maintaining linearity within specified swing limits. |
| VCC+ | Positive supply | Main power rail - must be decoupled with 0.1 μF ceramic capacitor placed ≤5 mm from pin for stability. |
| 2IN+ | Positive input | Non-inverting input of amplifier B - shares same ground-referenced input range as all other inputs. |
| 2IN− | Negative input | Inverting input of amplifier B - used in differential amplifiers with matched resistor networks. |
| 2OUT | Output | Amplifier B output - electrically isolated from other outputs; may drive separate signal chains on same board. |
| 3OUT | Output | Amplifier C output - enables three-stage filtering or independent channel conditioning without external ICs. |
| 3IN− | Negative input | Inverting input of amplifier C - compatible with unity-gain stable configurations per datasheet test conditions. |
| 3IN+ | Positive input | Non-inverting input of amplifier C - supports single-supply instrumentation amplifier topologies using external resistors. |
| 4IN+ | Positive input | Non-inverting input of amplifier D - allows simultaneous monitoring of four independent analog channels. |
| 4IN− | Negative input | Inverting input of amplifier D - used in transimpedance configurations for photodiode current-to-voltage conversion. |
| 4OUT | Output | Amplifier D output - completes quad functionality; output short-circuit duration is unlimited at VCC ≤ 15 V. |
| VCC− | Negative supply / Ground | Reference node for single-supply operation - must connect directly to system ground plane with minimal impedance. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low supply current | 85 μA typical per op-amp - reduces total system standby power to <350 μA for four-channel sensing nodes. |
| Ground-sensing input stage | Input common-mode range includes 0 V - eliminates need for negative rail or level-shifting circuitry in single-supply designs. |
| Wide single-supply operation | 3 V to 32 V range - supports direct interface with Li-ion batteries, USB-powered devices, and industrial 24 V systems. |
| Pin compatibility with LM324 | Identical pinout and function mapping - allows drop-in replacement in legacy LM324-based designs without PCB revision. |
| Low input offset drift | 10 μV/°C - ensures <0.7 mV total offset shift over full 0°C–70°C range, critical for uncalibrated temperature measurement. |
Applications
| Portable Instrumentation | LCD Display Bias Control |
|---|---|
|
Use Scenario: Battery-powered multimeter measuring DC voltage, resistance, and continuity with auto-ranging. IC Role / Device Role / Timing Role: LP324PWR buffers high-impedance divider networks, drives ADC reference inputs, and conditions thermistor signals for temperature compensation. Use Value: 85 μA per amplifier extends alkaline AA battery life beyond 12 months in sleep mode while maintaining 12-bit measurement accuracy. |
Use Scenario: Monochrome STN LCD module in handheld medical device requiring precise segment and backplane voltage control. IC Role / Device Role / Timing Role: LP324PWR generates stable bias voltages via resistor-divider feedback, regulates contrast voltage, and buffers column driver inputs. Use Value: Input offset voltage ≤4 mV ensures consistent grayscale rendering across all display segments without calibration firmware. |
| Consumer Audio Signal Conditioning | Industrial Power Supply Monitoring |
|
Use Scenario: Low-cost MP3 player with analog audio path including volume control, bass/treble adjustment, and headphone driver interface. IC Role / Device Role / Timing Role: LP324PWR implements active RC filters, DC-blocking integrators, and gain stages before Class AB headphone amplifier. Use Value: 2 nA input bias current prevents audible popping during potentiometer wiper movement in volume control circuits. |
Use Scenario: 24 V industrial PLC I/O module monitoring rail voltage, current sense, and temperature for overvoltage/overcurrent protection. IC Role / Device Role / Timing Role: LP324PWR compares sensed values against reference thresholds, drives optocoupler inputs, and conditions thermistor feedback. Use Value: 32 V absolute maximum supply rating allows direct connection to 24 V rail without external regulators or Zener clamping. |
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 | Higher supply current (1.2 mA typical), wider temp range (−40°C to +85°C), same SOIC-14 pinout. | Better suited for mains-powered equipment where power efficiency is secondary to thermal robustness. | Select LM324DR only if ambient temperature exceeds 70°C or if higher drive strength (40 mA output) is required. |
| LP2902PWR | Identical electrical specs but rated for −40°C to +85°C; same TSSOP-14 package and pinout as LP324PWR. | Required for automotive or outdoor industrial deployments needing extended temperature qualification. | Choose LP2902PWR when operating environment exceeds 70°C - no layout change needed, but verify thermal margin at max TA. |
Compared with LM324DR, LP324PWR reduces quiescent power by >90% but sacrifices output drive and temperature range; compared with LP2902PWR, it trades −40°C capability for lower cost and qualification overhead in commercial-grade applications.
Availability
LP324PWR is available at Aetrix Electronics and suitable for portable instrumentation, LCD display bias control, consumer audio signal conditioning, and industrial power supply monitoring requiring stable component supply across production lifecycles.
Supply support for LP324PWR 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 expertise in precision op-amps and low-power signal chain solutions.
The LP324PWR belongs to TI's ultra-low-power operational amplifier family, engineered specifically for battery-constrained applications where long service life, ground-referenced input operation, and wide supply tolerance outweigh speed requirements.
FAQ
What is the maximum operating temperature for LP324PWR?
The LP324PWR is rated for operation from 0°C to +70°C ambient temperature. This specification is defined in the Recommended Operating Conditions table of the official TI datasheet SLOS460B. Exceeding +70°C may cause parametric shifts in offset voltage, bias current, and output swing. For designs requiring −40°C to +85°C operation, consider LP2902PWR as a direct alternative with identical pinout and electrical behavior.
Is LP324PWR pin-compatible with LM324?
Yes, LP324PWR is fully pin-compatible with LM324 in TSSOP-14 packaging. Both devices share identical pin numbering, terminal functions, and electrical interface definitions per TI's documentation. This allows LP324PWR to serve as a drop-in replacement in existing LM324-based layouts, delivering ultra-low-power operation without PCB redesign - provided the application operates within the LP324PWR's 0°C to +70°C temperature range and does not require LM324's higher output drive capability.
What is the typical input offset voltage of LP324PWR?
The typical input offset voltage of LP324PWR is 2 mV at TA = 25°C, with a maximum of 9 mV across its full operating temperature range (0°C to +70°C). This value is measured under standard test conditions: VCC = 5 V, VIC = VCC/2, RL = 100 kΩ to ground. The low offset enables accurate DC amplification in sensor interfaces such as thermistor-based temperature measurement or strain gauge bridges without external nulling circuitry.
Does LP324PWR support single-supply operation?
Yes, LP324PWR fully supports true single-supply operation. Its input common-mode voltage range extends to ground (0 V), and its output can swing within 1.9 V of the positive rail and down to 1 V above ground under load. This allows direct interfacing with microcontroller ADC references and ground-referenced sensors without dual supplies or level-shifting components - a key enabler for compact, low-cost portable electronics using the LP324PWR.
What package type is used for LP324PWR?
LP324PWR uses the TSSOP-14 (PW) package: a 14-pin thin shrink small-outline package measuring 5.0 mm × 4.4 mm with 0.65 mm lead pitch and 1.2 mm maximum height. It features NiPdAu/Sn lead finish, complies with RoHS, and carries JEDEC MO-153 registration. This surface-mount package supports high-density PCB layouts and automated assembly, with verified stencil and land pattern guidelines published by Texas Instruments for reliable reflow soldering.
LP324PWR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- 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:
- 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-TSSOP
LP324PWR FAQ
1.How can I place an order for LP324PWR through Aetrix?
Please submit a Request for Quotation (RFQ) for LP324PWR 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 LP324PWR reliable?
The price and inventory of LP324PWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP324PWR is usually 5 days.
3.What payment methods are accepted for LP324PWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP324PWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP324PWR?
LP324PWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP324PWR 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 LP324PWR?
For technical support, including LP324PWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP324PWR requirements.
6.How does Aetrix verify that LP324PWR is sourced from the original manufacturer or authorized distributors?
All LP324PWR 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 LP324PWR meets industry standards.
7.What is the process for return or replacement of LP324PWR?
All LP324PWR units undergo pre-shipment inspection (PSI). If there is an issue with LP324PWR, 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 LP324PWR part is unused and in its original packaging.
Return procedure for LP324PWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LP324PWR 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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