AD620 Instrumentation Amplifier Module – Precision Microvolt/Millivolt AmplifierSKU 2132

Sensors & Modules

AD620 Instrumentation Amplifier Module – Precision Microvolt/Millivolt Amplifier

₹359

01 — About

What it does

The AD620 Instrumentation Amplifier Module is a low-cost, high-accuracy signal amplifier designed to boost extremely small differential signals from sensors such as strain gauges, load cells, thermocouples, and bridge circuits. Built around the Analog Devices AD620 monolithic instrumentation amplifier IC, it offers a wide adjustable gain range, high common-mode rejection, and low noise performance, making it ideal for precision data acquisition and biomedical signal amplification applications.

Key features

  • Adjustable gain from 1 to 1000x via onboard potentiometer
  • Gain also settable up to 10,000x using a single external resistor
  • High common-mode rejection ratio (CMRR) greater than 100dB
  • Low input offset voltage and low offset drift
  • Low noise performance for clean signal amplification
  • Wide operating voltage range for flexible power sourcing
  • Low power consumption suitable for battery-operated devices
  • Amplifies both AC and DC input signals
  • Compact module design for easy breadboard and PCB integration
  • Easy interfacing with Arduino, ESP32, and other microcontrollers

Good to know

  • Use the gain formula G = 1 + (49.4 kilo-ohm / RG) to calculate the correct gain resistor value for a specific application.
  • Ensure input signal levels stay within the supported microvolt to millivolt range for accurate amplification.
  • Maintain proper supply voltage levels to avoid signal clipping or distortion at higher gain settings.
  • Avoid exposing the module to excessive electrical noise sources for best signal integrity.
  • This module is not intended for high-frequency or RF signal amplification applications.
  • Handle with care, as the onboard gain-setting potentiometer is a precision component.

02 — Datasheet

Specifications

14
Amplifier IC
AD620
Amplifier Type
Instrumentation Amplifier
Operating Voltage
3V to 12V DC (module), plus or minus 2.3V to plus or minus 18V (bare IC)
Gain Range
1.5x to 1000x (onboard potentiometer), up to 10,000x with external resistor
Gain Formula
G = 1 + (49.4 kilo-ohm / RG)
Input Signal Range
100uV to 300mV
Bandwidth (Gain = 100)
120kHz
Input Offset Voltage
30uV typical, 125uV max
Input Bias Current
0.5nA typical, 2.0nA max
Common-Mode Rejection Ratio
100dB minimum (Gain = 10)
Supply Current
1.3mA max
Settling Time
15 microseconds to 0.01 percent
Package Type
8-lead SOIC / DIP (module PCB mounted)
Module Dimensions
32mm x 22mm