#358 Support for ptap 1 and ntap1 devices Pull request opened by KrzysztofHerman This PR delivers: 1.

xschem

schematic symbols for

ptap1

,

ntap1

devices 2.

xschem

schematic symbols for

pgring

,

ngring

guard rings 3.

xschem

symbol for a global net

sub!

4. updates in the

ngspice

models

resistors_mod.lib

to support simulation of the above mentioned devices 5. updates in the

xschem

testcases

dc_ptap1.sch

and

dc_ntap1.sch

6. PyCells for

ptap1

,

ntap1

and

gring

devices Although the guard ring is a separate device it is modeled as a ptap1/ntap1 for the purpose of the simulation and LVS. The simulation netlist entry has a format of :

XR2 Vcc gnd ptap1 R=5.568 w=10e-6 l=20e-6 d=1e-6

where

w

and

l

are the size of the guard ring and

d

is the contact width. For the LVS purpose area and perimeter are extracted as follows:

R2 Vcc gnd ptap1 A=5.8e-11 P=0.00012

IHP-GmbH/IHP-Open-PDK