LM358 Dual Operational Amplifier IC (DIP-8 Package)

The LM358 is an industry-standard dual operational amplifier IC containing two independent, high-gain, internally frequency-compensated op-amps. Designed specifically to operate from a single power rail across a wide supply range (3V to 32V), it eliminates the need for split dual supplies in basic designs. Its input common-mode voltage range extends directly down to ground (0V), making it ideal for single-supply sensor signal conditioning and low-voltage microcontroller interfaces.

Housed in a standard breadboard-friendly DIP-8 through-hole package, the LM358 is a staple component for analog prototyping, comparator circuits, audio pre-amps, and DIY robotics.

Key Specifications

• IC Type: Dual Operational Amplifier

• Package: DIP-8 (Dual In-Line Package, 8-Pin Through-Hole)

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

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

• Number of Channels: 2 Independent Op-Amps

• Gain Bandwidth Product (GBW): ~1 MHz

• Large Signal Voltage Gain: 100 dB (typical)

• Low Supply Current Drain: ~500 µA to 700 µA (low power)

• Input Common-Mode Range: Includes ground (V−)

• Output: Short-circuit protected

Common Applications

• Transducer and sensor signal conditioning (LDR, thermistor, current sense)

• Voltage comparators and threshold detectors (Schmitt triggers)

• Active analog filters (low-pass, band-pass, high-pass)

• DIY robotics, Arduino, ESP32, and Raspberry Pi analog front-ends

• Basic audio preamplification and general DC gain blocks

Pin Configuration (DIP-8)

• Pin 1 (OUT1): Output of Op-Amp 1

• Pin 2 (IN1-): Inverting Input of Op-Amp 1

• Pin 3 (IN1+): Non-Inverting Input of Op-Amp 1

• Pin 4 (GND / V-): Ground / Negative Power Supply

• Pin 5 (IN2+): Non-Inverting Input of Op-Amp 2

• Pin 6 (IN2-): Inverting Input of Op-Amp 2

• Pin 7 (OUT2): Output of Op-Amp 2

• Pin 8 (VCC / V+): Positive Power Supply (3V–32V)