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vlsi:workbook:analog:simref [25/09/2013 12:57] pacher |
vlsi:workbook:analog:simref [25/09/2013 13:02] pacher |
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====== Typical OCEAN variables used in Front-End designing ====== | ====== Typical OCEAN variables used in Front-End designing ====== | ||
+ | \\ | ||
__**Delta-like input current spike**__ | __**Delta-like input current spike**__ | ||
- | Use an **ipulse** current source with a trapezoidal shape (e.g. 1ns rise time, pulse width and fall time) | + | 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 | ||
<code> | <code> | ||
- | Qin*1.6e-19/1n | + | Qin*1.6e-19/(2*w) |
</code> | </code> | ||
+ | with ''Qin'' expressed as the **number of electrons**. | ||
- | __**Equivalent Noise Charge (ENC)**__ | ||
+ | |||
+ | \\ | ||
+ | __**Equivalent Noise Charge (ENC)**__ | ||
+ | \\ | ||
__**Time over threshold (ToT)**__ | __**Time over threshold (ToT)**__ | ||