The difference between cascoded and cascaded

[hanson_uestc]

I saw "cascoded" and "cascaded" in some books and papers
i am confused,who can tell me the differents about this two words?
thanks a lot!

 

[IanP]

Re: I HAVE A QUESTION

Amplifiers are cascaded when the output of the first is the input to the second.
The total gain is the product of the cascaded amplifier stages.

A cascode is an arrangement of electronic devices where the output of a common emitter (or cathode) circuit is coupled directly to the input of a common base (or grid) circuit (usually with no intervening components). The first stage's emitter (cathode) is connected to the common ground via a resistor and the base (grid) of the second device is grounded (sometimes via a capacitor). The resulting amplifier has high gain at high frequencies and low signal noise.

https://en.wikipedia.org/wiki/Cascode

Regards,
IanP

 

[suria3]

Re: I HAVE A QUESTION

Cascode = a single amplifier (which might have many number of transistors for gain boosting purpose)

Cascade = you add up a few stage of single amplifier (like adding block in series)

 

[swathi0356]

I HAVE A QUESTION

haiiiiiiii
just now i saw ur quoestion.
i am sorry for not replying u these many days.
i was not knowing tht i have to open in tht way on clicking all posts for quoestions.
i joined very recently.
the answer for ur quoestion is
ok i think u know cascading.
do u know push pull amplifier ckts.
there also the pnp transistors collector terminal will be connected to emiter of npn transistor.
ok
this is cascoding
i think most of the ckts terminals are cascoded
and the ckts are cascaded.
ok

 

[beckchm]

Re: I HAVE A QUESTION

they are absolutely different!

you must make sensitive to the terms.

cascade - serial connection cascode - common source and common gate