Scaling by factor of 0.028

Comments

• Matthias

  February 2014 edited February 2014

  Hi Itamar,

  maybe the database unit is too big to accommodate a layout with smaller scaling?

  Scaling won't change the database unit, which is a fundamental layout unit. So if for example, you scale down a line with width 1 um with a factor of 0.028 you should receive a 28 nm line. But if the database unit is 10 nm, the line width will be 20 or 30 nm depending on the snapping direction. A solution is to use smaller database unit, i.e. 1 nm in the previous example.

  Could you check that?

  Matthias
• mikamar

  February 2014 edited November -1

  Hi Matthias-
  
  The database is of 20nm technology and the database unit is defined as 0.001um, so I don't understand why there should be an issue.
  
  But anyway, changing the databse unit to 0.0001um before the sacaling seems to have solved the issue.
  
  Thanks much, Itamar
• Matthias

  February 2014 edited November -1

  Hi Itamar,

  what grid is the original layout drawn on? If the layout is on a 100nm grid originally for example, then you'll need 0.1nm database unit because 100nm will scale down to 2.8nm which needs 0.1nm for exact representation.

  Matthias