What is the difference between "AC magnitude" and "Amplitude" in Cadence?

[qiushidaren]

What is the difference between "AC magnitude" and "Amplitude" in Cadence?

What is the difference between "AC magnitude" and "Amplitude" in Cadence, thank you in advance!

 

[SkyHigh]

bme bfe

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.

 

[qiushidaren]

ac magnitude

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!

 

[SkyHigh]

Re: AC magnitude

You can check Cadence Design Manual and Help on AC response and characteristics.
It explains there.

 

[qiushidaren]

Re: AC magnitude

You can check Cadence Design Manual and Help on AC response and characteristics.
It explains there.

Ok, thanks for your suggestions!

 

[qiushidaren]

Re: AC magnitude

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!

 

[chenmy]

AC magnitude

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.

 

[qiushidaren]

Re: AC magnitude

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!!!