The Designer's Guide Community Forum

The Designer's Guide Community Forum
https://designers-guide.org/forum/YaBB.pl
Measurements >> Other Measurements >> Measurement of glitch energy
https://designers-guide.org/forum/YaBB.pl?num=1181222167

Message started by ywguo on Jun 7^th, 2007, 6:16am

Title: Measurement of glitch energy
Post by ywguo on Jun 7^th, 2007, 6:16am

Hi, Guys,

How do you measure the glitch energy of a DAC? When simulation and testing.

By the way, what is the best definition of glitch energy? In Jurgen Deveugele and Michiel Steyart's paper, [JSSC 2006] the glitch energy is defined as the energy difference between the ideal transition and the real transition, shown in the attached figure.

Thanks
Yawei

Title: Re: Measurement of glitch energy
Post by venki_vlsi on Jun 7^th, 2007, 5:34pm

hi,this is how i calculated glitch :
Worst case glitch energy occurs at mid transition (i.e. when 011111111110000000000 for 10 bit DAC).
Net-Glitch=area1+area2
Area1=1/2*b1*h1; Area2=1/2*b2*h2
Where b1, b2 are base of pulse and h1, h2 are height pulse:
EX: Area1＝1/2*0.33v*632.176ps=10.43pvs,
Area2=1/2*0.043v*405.621ps=8.72pvs
Net-Glitch=1.7pvs

Title: Re: Measurement of glitch energy
Post by venki_vlsi on Jun 7^th, 2007, 5:38pm

hi i am attching pdf regarding time specifications in dac.

Title: Re: Measurement of glitch energy
Post by ywguo on Jun 7^th, 2007, 11:26pm

Hi, Venkats,

Thanks. That paper clarify the concepts and definitions cleary.

Yawei