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vlsi:workbook:analog:simref [25/09/2013 12:42] pacher |
vlsi:workbook:analog:simref [25/03/2014 21:26] (versione attuale) pacher |
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**Keywords:** | **Keywords:** | ||
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+ | To be inserted: **closed loop gain simulation** and **loop stability analysis** | ||
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+ | e.g. (completo, fatto molto bene) | ||
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+ | [[http://lumerink.com/courses/ECE614/Handouts/]] \\ | ||
+ | [[http://lumerink.com/courses/ECE614/Handouts/Loop%Analysis.pdf]] \\ | ||
+ | [[http://lumerink.com/courses/ECE614/Handouts/Loop%Stability%Analysis.pdf]] | ||
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===== Introduction ===== | ===== Introduction ===== | ||
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====== Typical OCEAN variables used in Front-End designing ====== | ====== Typical OCEAN variables used in Front-End designing ====== | ||
- | e.g. ENC, ToT | + | \\ |
+ | __**Delta-like input current spike**__ | ||
+ | Use an **ipulse** current source with a trapezoidal shape | ||
+ | Let ''w'' be rise time, pulse width and fall time of the current pulse (e.g. 1ns), then set i2 to | ||
- | **Time over threshold (ToT)** // | + | <code> |
+ | Qin*1.6e-19/(2*w) | ||
+ | </code> | ||
- | Define a ''ToT'' output variable in ADE L with the usage of the ''creoss()'' OCEAN function, | + | with ''Qin'' expressed as the **number of electrons**. |
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+ | \\ | ||
+ | __**Equivalent Noise Charge (ENC)**__ | ||
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+ | \\ | ||
+ | __**Time over threshold (ToT)**__ | ||
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+ | Define a ''ToT'' output variable in ADE L with the usage of the ''cross()'' OCEAN function, | ||
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(cross(VT("/Vout_comp") 0.3 1 "falling" nil nil) - cross(VT("/Vout_comp") 0.3 1 "rising" nil nil)) | (cross(VT("/Vout_comp") 0.3 1 "falling" nil nil) - cross(VT("/Vout_comp") 0.3 1 "rising" nil nil)) | ||
</code> | </code> | ||
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====== ====== | ====== ====== | ||
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- | Last update: [[pacher@NOSPAMto.infn.it|Luca Pacher]] - Apr 23, 2013 | + | Last update: [[pacher@NOSPAMto.infn.it|Luca Pacher]] - Sep 25, 2013 |
~~NOTOC~~ | ~~NOTOC~~ |