LM358 Datasheet, Pinout, Applications & Equivalent


In the field of analog electronics, the LM358 takes center stage as a dual-operational amplifier integrated circuit. Recognized for its precision in signal amplification, this versatile component has made its mark in various applications. This article aims to provide a comprehensive overview of the LM358, delving into its functionalities, features, and applications.

What is LM358?

The LM358, an abbreviation for “Linear Monolithic Dual Operational Amplifier,” is an integral component in the world of integrated circuits. This operational amplifier excels in amplifying signals, making it an essential building block in various electronic circuits. From audio amplification to voltage following, the LM358’s capabilities are vast and impactful.

Breakdown of LM358

Breaking down the LM358’s architecture reveals its prowess. Comprising two amplifiers within a single IC package, it empowers engineers to design circuits with customizable amplification levels. Whether dealing with weak signals or intricate sensor interfaces, the LM358’s signal conditioning capabilities are noteworthy.

Features of LM358

Dual Amplification: At the core of the LM358 are two operational amplifiers, allowing for independent configuration.

Wide Power Supply Range: Its adaptability is showcased through its ability to function within a broad power supply voltage range.

High Open-Loop Gain: Precision is achieved through its high open-loop gain, ensuring accurate amplification.

Low Input Offset Voltage: The LM358’s input offset voltage reduction minimizes distortion in output signals.

Versatile Compatibility: It seamlessly works with single and split power supplies, catering to diverse setups.

Internal Frequency Compensation: The LM358’s internal compensation ensures stability across varying frequencies.

Specifications of LM358

Model Description
LM358Dual operational amplifier
Supply Voltage ±1.5V to ±16V
Input Offset Voltage2 mV (max)
Gain Bandwidth Product 1 MHz (typical)
Input Bias Current 20 nA (max)
Slew Rate 0.5 V/µs (typical)

Pinout of LM358

The pinout configuration of the LM358 highlights its input and output connectivity:

LM358 Precision Signal Amplification Pinout
Pin Name Pin Description
V+ Positive Power Supply
V- Negative Power Supply
IN+ Non-Inverting Input (Amplifier 1)
IN- Inverting Input (Amplifier 1)
OUT1Amplifier 1 Output
IN2+ Non-Inverting Input (Amplifier 2)
IN2- Inverting Input (Amplifier 2)
OUT2 Amplifier 2 Output

Applications of LM358

The LM358 finds its place in a multitude of electronic applications:

Signal Conditioning: In the realm of sensor signal processing, the LM358 shines by preparing signals for subsequent stages.

Audio Amplification: Its precision extends to audio amplifiers and pre-amplifiers, delivering clear sound.

Voltage Followers: Acting as a voltage follower, it bridges impedance gaps for seamless signal transmission.

Oscillators: The LM358 contributes to oscillator circuits, generating precise waveforms for various purposes.

Comparators: When configured as a voltage comparator, it detects thresholds in electrical signals.

Sensor Signal Processing: In applications involving sensors, the LM358 ensures precise signal conditioning.

Equivalent /Alternatives

While the LM358 is prominent, alternative options like the LM324, LM741, and TL072 also warrant consideration based on specific requirements.

In summary, the LM358’s impact on analog electronics cannot be understated. Its versatility, precision in signal amplification, and compatibility make it a go-to choice for engineers. Whether it’s voltage following, oscillation generation, or sensor interfaces, the LM358’s capabilities shine through. Its integration within diverse circuits showcases its importance, a testament to its enduring relevance in the ever-evolving landscape of electronics.

Troubleshooting and FAQs

Q: My LM358 circuit is producing unexpected results. What should I check first?

A: Start by verifying your connections and the power supply voltages. Ensure ic is good, and there are no short circuits or loose connections.

Q: Can I use the LM358 for audio amplification?

A: Yes, the LM358 can be used for audio amplification in low-power applications. For high-fidelity audio, you may consider op-amps with lower noise and distortion.

Q: Tell us the typical input voltage range for the LM358.

A: The LM358 can operate with input voltages typically ranging from -0.3V to V+ – 1.5V, where V+ is the positive

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