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Altera_Forum
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11 years ago

How to check Gain with ModelSim-ASE (FIR Compiler)

Hello everybody, I try to FIR Compiler simulation. I want to know how to calculate Gain from simulation result. I think that " Gain = 10 log (Vin / Vout)^2 ", but Fir Compiler's input da...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
11 years ago

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How about following requestments?

1. LPF

2. cut off frequency : 1.25MHz

3. input 8bit

4. ADC sampling frequency : 3MHz

( ttp://www.ti.com/lit/ds/symlink/adc1173.pdf

Does it need enough bigger than cut off frequency?)

5. Pass-band ripple requirement : 0.3dB

6. Stop-band rejection requirement : 40dB

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These do not make sense either. These sound more like parameters used to design an *analog* filter for feeding the ADC.

Why don't you explain what you are trying to do.

Cheers,

Dave