LM358 dual op-amp IC — DIP-8, single supply 3V–32V, wide voltage, amplifier and comparator

The LM358 is one of the most widely used dual operational amplifier (op-amp) ICs, available here in the classic DIP-8 through-hole package. It contains two independent, high-gain, internally frequency-compensated op-amps designed to operate from a single power supply over a wide voltage range of 3V to 32V (or ±1.5V to ±16V split supply). Its low supply current drain, independent of supply voltage magnitude, makes it ideal for battery-powered and low-power applications.

The LM358 is directly compatible with 3.3V and 5V digital systems, making it a go-to choice for interfacing analog sensors with microcontrollers such as Arduino, ESP32, and STM32. Whether you're building a voltage comparator, a transducer amplifier, a DC gain block, or a signal conditioning circuit, the LM358 delivers reliable, predictable performance in a breadboard-friendly DIP-8 package.

Key Specifications:

• Part number: LM358
• Configuration: dual op-amp (2 independent channels)
• Single supply voltage range: 3V – 32V
• Split supply voltage range: ±1.5V – ±16V
• Input common-mode voltage range: 0V to V_CC−1.5V
• DC voltage gain: 100dB (typ.)
• Unity gain bandwidth: 1MHz (typ.)
• Supply current: ~0.5mA per amplifier (typ.)
• Output: can sink and source current
• Package: DIP-8 (through-hole, 8-pin)
• Operating temperature: 0°C to +70°C (commercial) / −40°C to +85°C (industrial)

Key Features:

• Single supply operation (3V–32V) — eliminates need for dual/split supply in most applications
• Two independent op-amps — two channels in one package for compact circuit designs
• Wide supply voltage range — compatible with 3.3V, 5V, 9V, and 12V systems
• Low supply current — suitable for battery-powered and portable designs
• Internally frequency compensated — stable in unity-gain configuration without external compensation
• DIP-8 package — breadboard and PCB friendly for prototyping

Applications:

• Voltage comparator circuits
• Transducer and sensor signal amplification
• DC gain blocks and signal conditioning
• Active filters (low-pass, high-pass, band-pass)
• Oscillator and waveform generator circuits
• Arduino / ESP32 analog signal interface
• Battery voltage monitoring circuits

Variants available:

• Original — branded IC (TI, ST, or equivalent), recommended for precision and production designs
• China — compatible generic, suitable for prototyping and non-critical applications