Gain/Attenuation (Newbie question)

Discussion in 'General Electronics Chat' started by NY10, Aug 3, 2010.

  1. NY10

    Thread Starter Member

    Jul 30, 2010
    47
    0
    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.
     
  2. kingdano

    Member

    Apr 14, 2010
    377
    19
    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
     
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