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ronanchang
Joined: 21 Oct 2004
Posts: 21
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 21 Oct 2004 13:19 How to measure the offset voltage of the comparator ?? |
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| How to measure the offset voltage of the comparator through Hspice simulation programs??
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rambus_ddr
Joined: 26 Jun 2001
Posts: 119
Helped: 4
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| 21 Oct 2004 17:03 Re: How to measure the offset voltage of the comparator ?? |
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| In allen's book, there is an detail explain to measure the opamp parameter. you can get your answer.
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maxwellequ
Joined: 27 Jun 2001
Posts: 185
Helped: 11
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| 21 Oct 2004 17:25 Re: How to measure the offset voltage of the comparator ?? |
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Put a ramp (or a stair case) at the input of the comparator and see for which input voltage the output state changes.
Do not forget to make monte-carlo simulations, to account for the mismatches of the components.
Regards
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devrimaksin
Joined: 13 Oct 2004
Posts: 93
Helped: 9
Location: Dallas, Texas, USA
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| 21 Oct 2004 19:29 How to measure the offset voltage of the comparator ?? |
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You have to sweep the input signal diference
(Vp-Vn) with DC simulation (not transient)
and check at which Vp-Vn difference value
the output of the comparator reaches to mid supply
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cetc1525
Joined: 08 Oct 2004
Posts: 177
Helped: 3
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| 24 Oct 2004 7:05 How to measure the offset voltage of the comparator ?? |
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| Is your models correct for the offset simulation?
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hawkin
Joined: 05 Jul 2004
Posts: 10
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| 24 Oct 2004 12:46 How to measure the offset voltage of the comparator ?? |
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| model? why there is the kind of model that is not correct for the offset simulation?
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