AD620 Instrumentation Amp Module

This device uses an AD620 as an amplifier that is capable of amplifying small voltage signal (e.g. µV) AC or DC. By adjusting the on-board potentiometer, the magnification can be adjusted to go as high as up to 1000 times. This module has a low voltage offset, great linearity, and also, an adjustable zero potentiometer to improve its accuracy.

Quick Spec

• Supply Range: 3-12VDC
• Magnification: 1.5-1000 times
• Signal Input Voltage: 100uV – 300mV DC/AC
• Signal Output Range: ± (Vin-2V)
• Offset Voltage: 50μV
• Input Bias Current: 1.0nA (max)
• Common Mode Rejection Ratio: 100 dB
• Offset Voltage Drift: 0.6μV / ℃ (maximum)
• Stability: 2μV / month maximum
• Dimensions: 32 x 22 x 45 mm (L x W x D)
• Weight: 4g

Board Layout

Zero Adjustment Calibration

Zero output calibration is done by shorting the input terminals and adjusting the Zero potentiometer until the output is equal to zero

Differential Mode

Differential Mode is used with bridge type sensors or any sensor with differential output

Resources

• Datasheet

Shipping List

• 1 X AD620 Instrumentation Amp Module