Analog Output Impedance ???
-
- Posts: 4
- Joined: Fri Jan 29, 2016 10:21 am
Analog Output Impedance ???
Hello,
Does anybody know the output impedance's value of the Analog outputs (AO0 - AO3) from the extension connector
Thanks !
YP
Does anybody know the output impedance's value of the Analog outputs (AO0 - AO3) from the extension connector
Thanks !
YP
-
- Posts: 33
- Joined: Tue Aug 25, 2015 12:17 pm
- Contact:
Re: Analog Output Impedance ???
Hi,
The characteristics of the analog outputs are defined in the file red-pitaya.xdc:
https://github.com/RedPitaya/RedPitaya/ ... a.xdc#L111
Voltage is 1.8 V and drive current is 12 mA.
If I'm not missing something, that means an output impedance of 1.8/0.012 = 150 Ohms.
The characteristics of the analog outputs are defined in the file red-pitaya.xdc:
https://github.com/RedPitaya/RedPitaya/ ... a.xdc#L111
Voltage is 1.8 V and drive current is 12 mA.
If I'm not missing something, that means an output impedance of 1.8/0.012 = 150 Ohms.
-
- Posts: 1441
- Joined: Sat Jun 07, 2014 12:49 pm
- Location: Königswinter
Re: Analog Output Impedance ???
Well, you're missing the external passive low pass filter, which is not documented in detail.Voltage is 1.8 V and drive current is 12 mA.
If I'm not missing something, that means an output impedance of 1.8/0.012 = 150 Ohms.
- redpitaya
- Site Admin
- Posts: 907
- Joined: Wed Mar 26, 2014 7:04 pm
Re: Analog Output Impedance ???
Hi guys,
In the attachment is the output impedance of fast analog outputs:
Best, RP
In the attachment is the output impedance of fast analog outputs:
Best, RP
You do not have the required permissions to view the files attached to this post.
-
- Posts: 1441
- Joined: Sat Jun 07, 2014 12:49 pm
- Location: Königswinter
Re: Analog Output Impedance ???
Sadly, adding attachments here has been "kaputt" for a couple of months.
- redpitaya
- Site Admin
- Posts: 907
- Joined: Wed Mar 26, 2014 7:04 pm
Re: Analog Output Impedance ???
Hi,
It looks like they are broken.
We will check this.
Best, RP
It looks like they are broken.
We will check this.
Best, RP
-
- Posts: 1441
- Joined: Sat Jun 07, 2014 12:49 pm
- Location: Königswinter
Re: Analog Output Impedance ???
So, while you are looking into repairing attachments, could you please upload the schematic somewhere and post a link ? Or publish it eg. on the redpitaya.com faqs page ?
- redpitaya
- Site Admin
- Posts: 907
- Joined: Wed Mar 26, 2014 7:04 pm
Re: Analog Output Impedance ???
Hi
ah, sure.
This link should work:
https://dl.dropboxusercontent.com/s/ffu ... edance.png
We will put it on FAQ also.
Best,
ah, sure.
This link should work:
https://dl.dropboxusercontent.com/s/ffu ... edance.png
We will put it on FAQ also.
Best,
-
- Posts: 1441
- Joined: Sat Jun 07, 2014 12:49 pm
- Location: Königswinter
Re: Analog Output Impedance ???
Hey, you fixed attachments, great
The fast analog output impedance is also really helpful, but the original question was for the auxiliary analog outputs.
The fast analog output impedance is also really helpful, but the original question was for the auxiliary analog outputs.
- redpitaya
- Site Admin
- Posts: 907
- Joined: Wed Mar 26, 2014 7:04 pm
Re: Analog Output Impedance ???
Thanks Nils, I have miss that.
Here is the output impedance for AO0-AO3.
Best
Here is the output impedance for AO0-AO3.
Best
You do not have the required permissions to view the files attached to this post.
jadalnie klasyczne ekskluzywne meble wypoczynkowe do salonu ekskluzywne meble tapicerowane ekskluzywne meble do sypialni ekskluzywne meble włoskie
Who is online
Users browsing this forum: Google [Bot] and 89 guests