Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

sigma delta ADC SNR problems

Status
Not open for further replies.

heartwide

Junior Member level 3
Joined
Jan 20, 2006
Messages
29
Helped
3
Reputation
6
Reaction score
0
Trophy points
1,281
Activity points
1,439
Hi,all
I have designing a 2-2 cascaded sigma delta ADC, now a problems puzzled me so much, that is why the SNR filtered with a 5 order comb filter is much more larger than that be filtered before, it can be seen from the bode plot in matlab directly,especially in baseband. everyone knows it is not possible at practise. so ,
holp for help,thanks!
The data using to computes snr comes from spectre simulation results,and, i utilize matlab as tool, the comb filter is describe as
>> b=ones(1,64);
>> a=[1];
>> fout1=filter(b,a,fin);
.......
regards
:|
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Top