For example, ADA4853-1 has power down pin.
Is that output high-z condition, when it has disabled?
If that is true, so we can design exclusive output without analog switch, I think.
(tied these outputs. and turn on the only one device)
Is there any such devices, we can that?
What part are you referring to? Is it the ADA4851-1 or ADA4853-1? I would like to clarify that power down and disable state of the amplifier has a slight difference.
You can refer to this rarely asked question which has a discussion on the difference of the power down and disable mode. Here is the link of the article: http://www.analog.com/en/education/education-library/raqs/raq_amplifier_merelysleeping_issue59.html .
ADA4853-1 has a disable pin. The output goes to a high-impedance state when the output is put into disable mode. The graph below shows the output impedance of the part at a certain frequency when the output is disable.
On the other hand, the ADA4851-1 has a power down pin. The output is not in high-impedance state when the part is in power down mode.
I hope this helps.
Thank you very much for your support.
Sorry for confusing you.
Your information is very helpful for me.
I would like to know about ADA4851-1,especially.
But I understood that ADA4853 is able to tie the outputs.
I'm glad that I helped you regarding the concept of disable and power down state of amplifiers. Also, can I ask what is your application that might need you to tie the outputs of ADA4853-1?