AD620 Pinout and Circuit Diagram - Low Power Audio Amplifier

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/ 2019-01-10 / Tech

AD620 is a kind of low power instrumentation audio amplifier with low cost, which requires only one external resistor to set gains of 1 to 10000. It features 8-lead SOIC and DIP packaging that is smaller than discrete designs and offers low power, making it a good fit for battery powered, portable or remote applications.

Next it is mainly to introduce the AD620 pinout and AD620 circuit diagram for your demands.


AD620 pinout

AD620 has 8 pins with individual usage to make the whole chip achieve its function.

The AD620 pinout can be found in the picture below:

AD620 pinout

also the pin configurations for AD620 are labeled already.

Pin NumberPin NameDescription
1Gain (-Rg)Inverting Gain Terminal connected to resistor to set gain value
2Inverting Input (IN-)The Inverting input pin of the Op-Amp
3Non- Inverting Input (IN-)The Non - Inverting Input Pin of Amplifier
4Power (-Vs)Negative supply terminal
5ReferenceOutput reference input. Normally connected to common
6OutputAmplifier output pin
7Power (+Vs)Positive supply terminal
8Gain (+Rg)Non - Inverting Gain Terminal connected to resistor to set gain value

AD620 circuit schematic

A circuit schematic can better help us to understand circuits and components used, and it's a reference to make the actual circuit work.

Below is a fully labeled AD620 schematic diagram for reference.

AD620 circuit

Main Features:

Referring to AD620 Features, the first scene we can think is that it works as instrumentation audio amplifier.

Except that one, there still have some other features and applications we may need to know, which can help us to make use of it well, such as power sensitive applications, calibration and test equipments, low power medical instrumentation, data acquisition devices, control system process. It can operate in single and dual supply voltage, set gain with only one resistor.


Recommendations for AD620: 

AD620 suppliers and AD620 datasheet on hqew.net; 

AD620 circuit built videos.


Previous: 74LS08 pinout and circuit



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