LM308N National Semiconductor 1-Channel Op-Amp – Low Noise Precision

Description

Product Overview

The LM308N is a single‑channel operational amplifier engineered by National Semiconductor, a trusted name in analog circuitry. Built with a robust silicon die and encapsulated in a compact TO‑92 package weighing just 1.6 ounces, this device delivers exceptionally low noise levels and high precision across a wide voltage range. Its internal architecture features a voltage‑feedback topology that ensures stable gain and fast settling times, making it suitable for demanding signal‑conditioning tasks. The amplifier operates from a single supply voltage, simplifying power management in portable and bench‑top applications. With a typical bandwidth of several megahertz and a slew rate that supports rapid signal transitions, the LM308N provides the performance needed for modern industrial and scientific equipment.

Usage

Designed for versatility, the LM308N finds its place in a variety of environments. In industrial instrumentation, it serves as the core element in pressure transducers, temperature sensors, and motor‑control feedback loops, where accurate amplification of low‑level signals is critical. Laboratory researchers rely on its low‑noise characteristics for data‑acquisition systems, spectroscopy equipment, and bio‑instrumentation, where signal integrity directly impacts experimental outcomes. Hobbyists and prototype developers appreciate the ease of integration offered by the TO‑92 footprint, allowing the LM308N to be soldered onto breadboards or custom PCBs for rapid iteration. Its reliable performance under temperature extremes also makes it a solid choice for outdoor monitoring stations and automotive diagnostic tools.

Why Choose Us

When selecting an operational amplifier, quality and support are as important as specifications. National Semiconductor’s legacy of manufacturing excellence ensures each LM308N unit meets stringent performance criteria, backed by thorough testing and quality‑assurance processes. Our distribution network guarantees authentic parts, eliminating the risk of counterfeit components that can compromise system reliability. In addition to the product itself, we provide comprehensive technical documentation, including datasheets, application notes, and design guidelines, to help engineers integrate the LM308N seamlessly into their projects. Our customer service team is available to answer technical questions, assist with design challenges, and provide post‑sale support, reinforcing our commitment to long‑term satisfaction.

Key Features

• Low‑noise design minimizes signal distortion for high‑accuracy measurements.
• High‑precision voltage‑feedback architecture ensures stable gain and fast response.
• Compact TO‑92 package simplifies board layout and reduces overall system size.
• Wide operating temperature range supports harsh industrial and outdoor environments.
• Dedicated technical support and authentic parts guarantee reliable long‑term performance.

FAQ

What supply voltage range does the LM308N support?

The LM308N operates comfortably from a single supply voltage of 5 V up to 30 V, providing flexibility for both low‑power and higher‑voltage applications.

Can the LM308N be used in dual‑supply configurations?

Yes, the device can be powered with dual supplies (e.g., ±15 V) to accommodate circuits that require bipolar operation, expanding its applicability in audio and precision analog designs.

Is the LM308N suitable for high‑frequency applications?

While the LM308N offers a respectable bandwidth for many general‑purpose tasks, applications demanding very high frequencies may benefit from specialized high‑speed amplifiers. For typical voltage‑feedback uses up to a few megahertz, the LM308N performs reliably.

How does the LM308N compare to newer op‑amp families?

The LM308N provides a balanced combination of low noise, precision, and cost‑effectiveness. Although newer families may offer higher speed or lower power consumption, the LM308N remains a solid choice for designs where its performance envelope aligns with system requirements.

What is the typical output current capability?

The amplifier can source or sink up to 30 mA of load current, which is sufficient for driving moderate‑impedance loads in most instrumentation and control circuits.