Just got a device Spice model from (unnamed) foundry, get this error message:
ERROR -- Mosfet X_J1.m1, model X_J1.jncmod: Effective channel width for C-V
Ping Aylward, Puzzling Error Message
Jul 31, 2017
19 Replies
Den mandag den 31. juli 2017 kl. 17.36.28 UTC+2 skrev Jim Thompson:
formatting link
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On Monday, July 31, 2017 at 5:36:28 PM UTC+2, Jim Thompson wrote: [..]
For BSIM4, with l, xl, dlc given, the model code says
if (l + xl - 2 * dlc
Already been down that path. None of those suggestions apply. ...Jim Thompson
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[..] [..] [..]
Don't look *that* closely at the expression, it is an inexact approximation of the C code. In words: "l + xl - 2 * dlc" should be positive, where L = channel length XL = L offset for channel length due to mask/etch effect DLC = Delta L for C-V model (Those three are model parameters of the B4SIM family.)
There are some more "civilized" strongly-typed languages that only allow you to true/false test boolean types, so you can't just say take 0 and and 137 to it and have it evaluate to "true." Like Java. Blech.
John,
- In most languages (including BASIC, C and so on), arithmetic operators take precedence over conditional operators. The statement is unambiguous.
You claim to know C, and write in BASIC, so you /must/ be aware of this.
- Even in a language without OoO, the result is not ambiguous, just different: (((W + xW - 2) * DWC)
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