Hi
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?
Regards
moto
Hi Moto,
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.
Regards,
Jay
