AD620ARZ-REEL7
Overview
The AD620ARZ-REEL7 is a low-cost, high-accuracy instrumentation amplifier that requires only one external resistor to set gains from 1 to 10,000. It features a low supply current of 1.3mA maximum and is housed in a compact 8-lead SOIC package, making it suitable for precision data acquisition and medical applications. The device offers high CMRR and low input bias current for interfacing with high-impedance sensors.
Why Choose This Part
The AD620 simplifies circuit design by replacing discrete three-op-amp designs with a single IC that offers superior matching and thermal tracking. It operates over a wide supply range from plus/minus 2.3V to plus/minus 18V while maintaining low power consumption. The device is highly versatile, allowing gain adjustment with a single 1% resistor for high precision across various signal levels.
Applications
Getting Started
To use the AD620, connect a single external resistor between pins 1 and 8 to set the desired gain according to the formula G = (49.4 kOhm / Rg) + 1. Ensure bypass capacitors are placed close to the power supply pins (pins 4 and 7) to maintain stability and minimize noise. For prototyping, the AD620 is often used in breadboard-friendly DIP packages or on SOIC-to-DIP adapter boards.
