What is the difference between cascode amplifier configuration and cascade amplifier configuration?


From a transistor perspective, a cascade is typically when the amplifier load(s) are connected in a left-to right horizontal chain configuration, whereas a cascode has the load(s) stacked vertically.

Examples... enter image description here

edit. whoops, I somehow linked on an older post. Sorry if it is out of place.


In a cascade:
the output of the first amplifying device (transistor) is fed as input to the second amplifying device,
whose output is fed as input to the third,
and so on until an adequate signal amplification has been achieved.

An amplifier consisting of a common emitter input stage that drives a common base output stage.
advantages include high gain and low noise.

Go through these links you may get an clear idea about these.

  • 2
    \$\begingroup\$ Can you give some example circuits? Seems like a great way to cement your answer. The only other thing after that I could want would be references for further learning. Thank you for writing an answer! \$\endgroup\$ – Kortuk Oct 27 '11 at 12:43
  • \$\begingroup\$ @Kortuk:Go through those above links as i changed added it in my answer as per your request \$\endgroup\$ – Gouse Shaik Oct 27 '11 at 12:50
  • \$\begingroup\$ Section 3: "Cascading Cascode amplifiers!" You seem to be a new user, please do not take my guidance incorrectly, it is meant as helpful advice, nothing more. \$\endgroup\$ – Kortuk Oct 27 '11 at 13:29
  • \$\begingroup\$ @Kortuk"Cascading Cascode amplifier!" i didn't get your point. \$\endgroup\$ – Gouse Shaik Oct 27 '11 at 13:30
  • \$\begingroup\$ That was a joke. I was just pointing out, you can cascade cascode amplifiers, you could even cascode two sets of cascaded amplifiers. Something to think about for those that do not understand what they are. Thanks for the edits! \$\endgroup\$ – Kortuk Oct 27 '11 at 22:01

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