LM358N Low Power Dual Operational Amplifier (DIP-8 Package)

If the LM324 is the definitive quad amplifier for larger layouts, the LM358N is its incredibly popular, compact sibling. Packing two completely independent, internally frequency-compensated operational amplifiers into a tiny, standard 8-pin Dual Inline Package (DIP-8), this integrated circuit is the go-to analog component for designers who need reliable signal conditioning without wasting board space on unused pins.

The LM358N was revolutionary because it eliminated the traditional requirement for dual power supplies (positive and negative voltage rails). It is engineered to run seamlessly from a single positive voltage source—like a standard 5-Volt microcontroller rail or a 9-Volt battery—while allowing its input common-mode range to swing all the way down to ground. With its remarkably low power consumption and high versatility, it serves as the ideal intermediate stage between low-voltage analog sensors and digital microcontrollers.

Key Features & Functional Advantages

• Dual Independent Amplifiers: Contains two separate operational amplifiers in a single 8-pin package, letting you construct two distinct signal stages or buffer two separate sensors concurrently.

• Single-Supply Convenience: Specifically optimized to run off a single positive voltage line, making it instantly compatible with battery-operated electronics and digital systems.

• Low Power Drain: Draws an exceptionally small amount of operating current, minimizing its impact on your overall system power budget.

• Internal Frequency Compensation: Pre-engineered for unity-gain stability, preventing unwanted oscillations and drastically reducing the need for external stabilizing capacitors.

• Wide Supply Versatility: Handles a broad range of supply voltages, operating reliably from low logic levels up to standard industrial voltages.

Perfect For

• Sensor Preamplifiers: Boosting small analog voltage changes from transducers, photocells, and piezoelectric sensors so they can be reliably sampled by an analog-to-digital converter.

• Active Filter Networks: Building compact low-pass, high-pass, or band-pass filters to clean up audio frequencies or remove high-frequency noise from data streams.

• General Purpose Gain Blocks: Providing straightforward voltage amplification, signal isolation, or impedance buffering anywhere in an analog signal chain.

• Hobbyist and Educational Sockets: The industry-standard introductory chip for prototyping basic op-amp circuits on breadboards and teaching analog control principles.

Technical Specifications

• Device Type: Dual Operational Amplifier

• Number of Channels: 2 Independent Amplifiers

• Single Supply Voltage Range: 3.0 Volts to 32.0 Volts DC

• Dual Supply Voltage Range: +/- 1.5 Volts to +/- 16.0 Volts DC

• Total Supply Current: ~0.7 milliamps (ultra-low power consumption)

• Package Type: 8-Pin Plastic Dual Inline Package (PDIP-8)

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