Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revision Previous revision
Next revision Both sides next revision
config:netlist [2022/05/19 11:55]
rajit [Transistor device names]
config:netlist [2022/05/19 11:58]
rajit
Line 218: Line 218:
 If this is turned on, this permits the use of long channel devices when applying the sizing body. This might be needed if the width/length ratio dictates that the width of the device should be smaller than the minimum width; in this case, the specified drive strength can be achieved by using a long channel transistor. If this is turned on, this permits the use of long channel devices when applying the sizing body. This might be needed if the width/length ratio dictates that the width of the device should be smaller than the minimum width; in this case, the specified drive strength can be achieved by using a long channel transistor.
  
- +===== Sizing limits =====
-====== Sizing limits ======+
  
 Internally, act maintains width and lengths of transistors as integer-valued variables that are a multiple of the manufacturing grid. Hence, if the ratio of lambda/manufacturing_grid is very large, then normal widths might overflow (based on the maximum integer on your system) and you might get unexpected errors. This should not be an issue in general; if the manufacturing grid is 1nm, then the maximum width and length cannot be more than 2 meters, a reasonable assumption at present. Internally, act maintains width and lengths of transistors as integer-valued variables that are a multiple of the manufacturing grid. Hence, if the ratio of lambda/manufacturing_grid is very large, then normal widths might overflow (based on the maximum integer on your system) and you might get unexpected errors. This should not be an issue in general; if the manufacturing grid is 1nm, then the maximum width and length cannot be more than 2 meters, a reasonable assumption at present.