LM358 Gain Amplification Operational Amplifier Module (Adjustable Analog Signal Amplifier)

The LM358 Gain Amplification Operational Amplifier Module is a compact analog signal conditioning board built around the LM358 dual operational amplifier IC. It is designed to amplify low-level analog signals from sensors, microphones, photodetectors, thermistors, and other transducers before they are processed by microcontrollers, ADCs, or control systems. The onboard potentiometer allows the amplifier gain to be adjusted for different signal levels and application requirements.

Operating from a single supply voltage between 3V and 32V DC, the module offers low-noise performance, stable amplification, and easy integration with Arduino, ESP32, STM32, Raspberry Pi (via ADC), PLCs, and other embedded platforms.

Key Features -

• Based on the LM358 dual operational amplifier IC

• Adjustable signal gain using onboard potentiometer

• Single-supply operation from 3V to 32V DC

• Suitable for low-level analog signal amplification

• Stable and low-noise performance

• Compact PCB module design

• High input impedance for sensor interfacing

• Easy integration with microcontrollers and ADCs

• Suitable for audio and sensor signal conditioning

• Ideal for embedded and industrial applications

Specifications -

• Product type - Operational Amplifier Module

• IC type - LM358

• Amplifier type - Dual Operational Amplifier

• Operating voltage - 3V to 32V DC

• Output type - Analog Voltage

• Gain adjustment - Onboard Potentiometer

• Input type - Analog Signal Input

• Frequency response - Suitable for Audio and Sensor Signals

• Operating temperature - -40C to +85C

• Mounting type - PCB Module

• Application - Signal Conditioning and Amplification

Applications -

• Sensor signal amplification

• Thermistor signal conditioning

• Microphone pre-amplification

• Photodiode and light sensor amplification

• Arduino and ESP32 analog input projects

• Industrial instrumentation

• Data acquisition systems

• Embedded control systems

• Laboratory electronics

• DIY analog circuit projects