AD620 Microvolt/Millivolt Voltage Amplifier Module (Precision Instrumentation Amplifier Board)

The AD620 Microvolt/Millivolt Voltage Amplifier Module is a precision signal conditioning board designed to amplify extremely small differential signals into measurable voltage levels for microcontrollers and data acquisition systems. Based on the AD620 instrumentation amplifier IC, it provides high input impedance, low noise, excellent common-mode rejection, and adjustable gain for accurate signal amplification. This module is ideal for interfacing strain gauges, load cells, thermocouples, biomedical sensors, and other low-level analog signal sources with Arduino, ESP32, STM32, Raspberry Pi (with ADC), PIC, AVR, and other embedded platforms.

Key Features -

• Based on the AD620 precision instrumentation amplifier IC

• Amplifies microvolt and millivolt differential signals

• Adjustable gain using an external resistor

• High input impedance minimizes sensor loading

• Low noise and high common-mode rejection performance

• Suitable for precision sensor signal conditioning

• Compact PCB breakout module for easy integration

• Compatible with Arduino, ESP32, STM32, Raspberry Pi (with ADC), PIC, and AVR

• Stable analog output for data acquisition systems

• Ideal for industrial, laboratory, and biomedical applications

Specifications -

• Product type - Instrumentation Amplifier Module

• Main IC / Chipset - AD620

• Operating voltage - 3.3V to 12V DC (Typical)

• Input signal type - Differential Microvolt / Millivolt Signals

• Gain range - Adjustable via External Resistor

• Bandwidth - Supports Low-Frequency Signals

• Noise performance - Low Noise Design

• Output signal - Amplified Analog Voltage

• Package / Mounting type - PCB Breakout Module

Applications -

• Load cell and electronic weighing systems

• Strain gauge signal amplification

• Thermocouple and bridge sensor interfacing

• Biomedical signal acquisition such as ECG and EMG

• Precision instrumentation and measurement systems

• Industrial process monitoring

• Arduino and embedded analog signal conditioning

• Laboratory testing and sensor evaluation