How to reduce the effect of HD3 in delta sigma ADC&#6531

Status
Not open for further replies.
B

bagaseaotter

Newbie level 5
Joined
Jul 1, 2005
Messages
8
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
1,344
How to reduce this effect in delta sigma ADC?
 

Re: How to reduce the effect of HD3 in delta sigma ADC&#

I think that for most cases its due the amplifier deffective settling due finite GBW, finite DC gain and slew-rate. By improving these parameters the third harmonic in most cases is reduced. Several books and articles provide information on these topics. There are other considerations for harmonics such as DAC mismatch in multi-bit architectures. Let me know if this help.

George
 

Re: How to reduce the effect of HD3 in delta sigma ADC&#

ru using source degeneration for the input transistors.
 

Re: How to reduce the effect of HD3 in delta sigma ADC&#

the SC switches also contribute these HD3,HD5...
 

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…