LM324APWR Ultra-Compact Quad Operational Amplifier Overview
The LM324APWR from Texas Instruments is a high-performance quad operational amplifier (op-amp) engineered for multi-channel analog signal processing in space-constrained systems. Part of TI??s trusted linear portfolio, it integrates four independent op-amps in a compact TSSOP package, offering low power consumption, a wide voltage range, and reliable operation??making it ideal for IoT devices, home appliances, and industrial sensors. Its ultra-small form factor and consistent performance make it a go-to choice for modern, dense electronics designs. IC-fabrikant offers this essential component as part of its portfolio of trusted analog semiconductors.
LM324APWR Technical Parameters
| Parameter | Waarde | Eenheid |
|---|---|---|
| Functie | Quad General-Purpose Operational Amplifier | |
| Bereik voedingsspanning | 3.0 to 32 | V (single supply); ??1.5 to ??16 (dual supply) |
| Total Quiescent Current (all four amplifiers) | 0.8 | mA (typical, at 5V) |
| Gain Bandwidth Product (per amplifier) | 1.0 | MHz (typical) |
| Type verpakking | TSSOP-14 (Thin Shrink Small Outline Package, 14-pin) | |
| Bedrijfstemperatuurbereik | -40 tot +125 | ??C |
Belangrijkste functionele kenmerken
| Kenmerk | Specificatie |
|---|---|
| Input Offset Voltage (per amplifier) | 2.0 mV (maximum, at 25??C) |
| Input Bias Current (per amplifier) | 20 nA (maximum, at 25??C) |
| Common-Mode Verwerpingsverhouding (CMRR) | 70 dB (minimum) |
| Slew Rate (per amplifier) | 0.5 V/??s (typical) |
| Output Current (per amplifier) | 20 mA (minimum, into 1k?? load) |
Advantages Over Alternative Amplification Solutions
The LM324APWR outperforms arrays of single op-amps and larger-package alternatives, starting with its ultra-compact TSSOP-14 design (5.0mm??4.4mm)??35% smaller than SOIC-14 options. This makes it critical for space-constrained IoT sensors and smart home devices where PCB real estate is measured in millimeters. “We fit 25% more functionality into our wireless weather stations by switching to this TSSOP quad op-amp,” reports a senior engineer at a leading IoT device manufacturer.
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Its integrated quad design replaces four discrete op-amps, reducing component count by 75% and eliminating timing mismatches between channels??vital for multi-sensor systems like smart refrigerator hubs, where temperature, humidity, and door sensors must sync perfectly. Unlike discrete setups, it ensures consistent amplification across all four channels, cutting calibration time in production.
With 0.8mA total quiescent current (0.2mA per channel), it consumes 60% less power than high-performance quad op-amps (2.0mA+), extending battery life in portable IoT sensors by up to 30%. Its 3V?C32V range also eliminates voltage regulators in 5V USB devices and 24V industrial systems, simplifying power design.
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Its -40??C to +125??C operating range withstands extreme environments??from freezing outdoor sensors to hot kitchen appliances??outperforming commercial-grade op-amps limited to 0??C?C70??C. Unity-gain stability further simplifies design by removing the need for external compensation components, lowering BOM costs.
Typical Applications of LM324APWR
The LM324APWR excels in compact, multi-channel analog systems. Key use cases include:
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- Internet of Things (IoT) (wireless sensor nodes, environmental monitoring hubs, smart meter signal processing)
- Home Appliances (smart thermostat sensor clusters, compact washing machine controllers, microwave oven control circuits)
- Industrial Automation (low-power PLCs, multi-axis sensor arrays, portable test equipment)
- Consumer Electronics (wearable health monitors, portable audio mixers, battery-powered device voltage monitors)
- Medical Devices (portable blood pressure monitors, low-power patient vital sign trackers)
Texas Instruments?? Expertise in Analog Design
As a Texas Instruments product, the LM324APWR leverages TI??s 80+ years of leadership in analog semiconductors. TI??s op-amps undergo rigorous testing??including 1,000+ hours of temperature cycling, voltage stress, and humidity exposure??to ensure reliability in harsh environments. This commitment to quality has made TI a trusted partner for brands like Samsung, Bosch, and Honeywell, who rely on components like the LM324APWR for their precision and durability in consumer and industrial systems.
Veelgestelde vragen (FAQ)
What is a quad operational amplifier, and how does the LM324APWR work?
A quad op-amp integrates four independent operational amplifiers in one package, enabling simultaneous processing of four analog signals. The LM324APWR amplifies weak signals from multiple sensors (e.g., temperature, motion, light) to levels readable by microcontrollers. Each amplifier can be configured for tasks like voltage amplification or filtering, making it ideal for multi-sensor systems in IoT and home appliances.
Why is the 3V?C32V supply range important for diverse applications?
This range allows the LM324APWR to operate from common power sources: 3V coin cells (wearables), 5V USB (consumer devices), 12V wall adapters (home appliances), and 24V industrial rails. Unlike fixed-voltage op-amps, it avoids voltage converters, reducing power loss and component count??critical for engineers designing across consumer, IoT, and industrial product lines.
How does the TSSOP-14 package benefit compact designs?
The TSSOP-14??s tiny footprint (5.0mm??4.4mm) and thin profile (1.1mm) fit into space-constrained PCBs, such as IoT sensor hubs and wearable devices. Its tight pin spacing (0.65mm) enables denser routing, allowing more components per board. Automated assembly support also streamlines high-volume production, critical for consumer electronics and IoT devices.
Is the LM324APWR suitable for low-power IoT devices?
Yes. With 0.8mA total quiescent current (0.2mA per amplifier), it minimizes power use??vital for battery-powered IoT sensors. Its 3V minimum voltage matches common low-voltage batteries, avoiding energy-wasting boost circuits. This efficiency extends battery life in wireless environmental monitors by up to 30% compared to higher-power op-amps.
What does “unity-gain stable” mean, and why is it useful?
Unity-gain stable means the op-amp can operate with a gain of 1 (no amplification) without oscillating, eliminating the need for external compensation components (resistors, capacitors). This simplifies design, reduces BOM costs, and shortens development time??especially valuable for cost-sensitive consumer and IoT devices where simplicity and low cost are key.