is this SNR/DR spec reasonable??

Status
Not open for further replies.
X

xuedashun

Member level 1
Joined
Aug 30, 2005
Messages
39
Helped
1
Reputation
2
Reaction score
0
Trophy points
1,286
Activity points
1,582
In a class D amplifier,, 2 stage sigma delta modulator + driver + speaker
the input is analog signal

the spec is: SNR/DR min=85dB, -60dBFS

From my understanding, it's impossible for 2stage SDM to reach 80dB SNR
so if the SMD is used in classD, is the 85dB spec reasonable?, if reasonable,
why??

Thanks.
 

I think the specs are reasonable.

It's not true that you can't achieve more than 80dB in 2nd order sigma-delta modulator. You can achieve it depending on the OSR selected by you.
 

Status
Not open for further replies.

Similar threads

Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…