SARA-2016

[greierasul]

A simple scheme and pretty

 

[greierasul]

last simulations

 

[hpavictor]

I like this project !

 

[greierasul]

And linearity chart...The amplifier will have the slew rate of 45V/us, working band of 700khz(-3dB), a very good THD and IMD, a negative feedback loop gain with relative low level. Every stage it is native fairly linear.

 

[r_merola]

Hi Greierasul

Looks to be a very interesting project.

Why you do not use MJL4281A as ON Semi apoint as complementary to MJL4302 in datasheet of mjl4302?

Did you have any offset issue in simulation?(I forgot my english class...)
Regards
Ronaldo

 

[greierasul]

It's just a typo. In fact it can use a lot of complementary pairs. I recommend transistors with the smallest Cob and Ft grater than 30Mhz.

Beste regards, Raimond.

 

[alex mm]

I ask my self ,if someone it's interested to build this amplifier .... and a decent PCB it's was layout by me in this case .🙂 I will prepare B&W pdf.documents 😉
Best regards,Alex

 

[Project16]

Hello Alex

There in quite some time I watched your SARA amplifier on youtube and other PCB design, and it's really a nice amplifier.
The necessary files to its realization or pcb available are welcome.

PS: I have your PCB for the USSA-5 by Fab, congratulations for drawing!

Regard's

 

[Cambe]

Alex

 

[ammel68]

Very nice PCB.

Another awesome layout from Mr. Sprint Layout!🙂

 

[alex mm]

PCB files Sara-2016

Thanks ,and pdf.files for tonner transfer and photo.....
Regards,Alex

 

[Project16]

Thank you, it is much appreciated!

 

[FreddyPL]

alex, can You send .lay file of this board?

 

[alex mm]

alex, can You send .lay file of this board?

Unfortunately ,no ,because of makros library,it's my personal usage and I don't want to be copy by others. .😱
Regards,Alex

 

[greierasul]

Toys for boys

 

[r_merola]

My personal version of SARA

After some simulations and other personal changes I get this result.
I followed the basic topology and component selection.

Please have a look and comment

 

[greierasul]

I can not see very well the schematic. Please put a bigger picture.

 

[r_merola]

asc file

Hi Greierasul

I think the best way is put the asc file.
You can also make some further simulations and testing as I am not a LTspice expert.

Regards
Ronaldo

 

[greierasul]

Ok, I will use my models but on your scheme changes.

 

[r_merola]

I am looking forward to read your and other points.
Maybe we can improve it a little bit and learn also a bit.

Regards
Ronaldo