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

If the LM324 is the quad-core workhorse of analog electronics, the LM358N is its leaner, space-saving dual-core sibling. This legendary 8-pin integrated circuit houses two completely independent, internally frequency-compensated operational amplifiers. Designed from the ground up to operate entirely from a single power supply, it is the absolute standard for maker projects, audio DIY, and sensor telemetry where running complex, dual-rail (+/- 12V) power supplies is simply out of the question.

Because it operates flawlessly on standard 3.3V or 5V logic rails, it bridges the gap perfectly between the analog physical world and your digital microcontrollers. Its input common-mode voltage range extends all the way down to Ground, meaning it can accurately read low-voltage sensor signals without clipping the bottom of the waveform. Whether you are building a custom pre-amplifier for a tiny electret microphone, buffering the output of a photoresistor, or designing a simple low-battery indicator, the LM358 is an incredibly versatile, foolproof component that drops perfectly into any breadboard.

Key Features & Functional Advantages:

• Dual Amplifier Array: Packs two completely independent op-amps into a single, compact 8-pin package, providing exactly what you need for stereo audio processing or dual-sensor readouts without wasting board space.

• Single Supply Operation: Engineered to run smoothly on a single positive voltage rail (from 3V up to 32V), making it perfectly compatible with USB power banks, LiPo batteries, and standard Arduino power pins.

• Ground-Sensing Inputs: The inputs can accurately read voltages all the way down to 0V (Ground), an essential feature when measuring weak signals from single-ended analog sensors.

• Low Power Consumption: Highly efficient design draws remarkably low quiescent current (typically around 0.5mA for the whole chip), extending the battery life of remote, always-on IoT nodes.

• Breadboard Native (8-DIP): The standard 0.1-inch (2.54mm) pin pitch fits effortlessly into any solderless breadboard, perfboard, or standard 8-pin IC socket.

Perfect For:

• Sensor Signal Conditioning: The standard choice for amplifying the tiny analog voltages generated by current sense resistors, thermistors, and piezoelectric knock sensors before they reach an ADC pin.

• DIY Audio & Synthesizers: Frequently used to build simple audio pre-amplifiers, active tone controls, and control-voltage (CV) buffers in custom analog synthesizers and guitar pedals.

• Basic Analog Comparators: Easily wired as an open-loop comparator to compare two voltages—perfect for triggering a cooling fan when a thermistor reaches a specific temperature threshold.

• Battery-Powered Circuits: Its wide voltage range and low current draw make it the ideal analog frontend for portable, battery-backed environmental monitors.

Technical Specifications:

• Amplifier Type: General Purpose Operational Amplifier

• Number of Channels: 2 (Dual)

• Operating Supply Voltage (Single): 3V to 32V DC

• Operating Supply Voltage (Dual): ±1.5V to ±16V DC

• Unity Gain Bandwidth Product: ~1 MHz (Typical)

• Slew Rate: 0.3 V/µs to 0.6 V/µs

• Input Bias Current: 45 nA (Typical)

• Supply Current (Total): ~0.5 mA to 0.7 mA

• Package / Case: 8-DIP (0.300", 7.62mm width)

• Mounting Type: Through-Hole (PTH)

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