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qiushidaren
Joined: 21 Mar 2006
Posts: 209
Helped: 1
Location: BME??BFE
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 24 Aug 2006 6:49 AC magnitude |
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| What is the difference between "AC magnitude" and "Amplitude" in Cadence, thank you in advance!
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SkyHigh
Joined: 13 Jan 2005
Posts: 376
Helped: 51
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| 24 Aug 2006 6:57 Re: AC magnitude |
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Amplitude is used for a periodic signal like clock, thus frequency dependent.
AC magnitude is used for frequency independent composites such as device noise or spurious or floor noise.
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qiushidaren
Joined: 21 Mar 2006
Posts: 209
Helped: 1
Location: BME??BFE
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| 24 Aug 2006 7:13 Re: AC magnitude |
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| SkyHigh wrote: |
Amplitude is used for a periodic signal like clock, thus frequency dependent.
AC magnitude is used for frequency independent composites such as device noise or spurious or floor noise. |
I still can't catch you, amplitude is frequency dependent? I have never heard of this!
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SkyHigh
Joined: 13 Jan 2005
Posts: 376
Helped: 51
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| 24 Aug 2006 7:25 Re: AC magnitude |
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You can check Cadence Design Manual and Help on AC response and characteristics.
It explains there.
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qiushidaren
Joined: 21 Mar 2006
Posts: 209
Helped: 1
Location: BME??BFE
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| 24 Aug 2006 7:29 Re: AC magnitude |
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| SkyHigh wrote: |
You can check Cadence Design Manual and Help on AC response and characteristics.
It explains there. |
Ok, thanks for your suggestions!
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qiushidaren
Joined: 21 Mar 2006
Posts: 209
Helped: 1
Location: BME??BFE
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| 24 Aug 2006 14:04 Re: AC magnitude |
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| what a pity, I can't find a Cadence Design Manual in my computer, so can someone else explain some details about the difference between AC magnitude and Amplitude in Cadence to me? Thank you in advance!
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chenmy
Joined: 18 Aug 2006
Posts: 17
Helped: 2
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| 24 Aug 2006 17:13 AC magnitude |
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Hi,"AC magnitude" is used in "ac" analysis and it is an ac small signal amplitude.
"Amplitude" is used in "tran" analysis and it is a large signal amplitude.
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qiushidaren
Joined: 21 Mar 2006
Posts: 209
Helped: 1
Location: BME??BFE
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| 25 Aug 2006 6:07 Re: AC magnitude |
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| chenmy wrote: |
Hi,"AC magnitude" is used in "ac" analysis and it is an ac small signal amplitude.
"Amplitude" is used in "tran" analysis and it is a large signal amplitude. |
Thank you so much, you really help me a lot!!!
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