Hi, all

I just have some datasheets questions.

I had read the datasheets, but not quite sure what they are doing exactly.

The chips that I have questions are AD8180, VCA821, ADG734, and AD5245.

If someone can explain these in detail, it is appreciated.

 

AD8180 - Multiplexer

http://en.wikipedia.org/wiki/Multiplexer


VCA821 - Variable Gain Amplifier

http://en.wikipedia.org/wiki/Amplifier#Gain


ADG734 - Essentially is an IC with 4 switches - the switches are actually CMOS devices - so they are logic level (digital) controlled switches

AD5245 - A potentiometer which is controllable via a microcontroller - in this case using I2C as a communications protocol.

http://en.wikipedia.org/wiki/Digital_potentiometer
http://en.wikipedia.org/wiki/I²C


Hope that helps,

Dan