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Simple inductor PCell #335

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Simple inductor PCell #335

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1 change: 1 addition & 0 deletions ihp-sg13g2/libs.tech/klayout/python/sg13g2_pycell_lib/__init__.py
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Original file line number Diff line number Diff line change
Expand Up @@ -56,6 +56,7 @@
'npn13G2V_code',
'inductor2_code',
'inductor3_code',
'simple_inductor_code',
'dantenna_code',
'dpantenna_code',
'via_stack_code',
Expand Down
269 changes: 269 additions & 0 deletions ihp-sg13g2/libs.tech/klayout/python/sg13g2_pycell_lib/ihp/simple_inductor_code.py
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Original file line number Diff line number Diff line change
@@ -0,0 +1,269 @@
########################################################################
#
# Copyright 2024 IHP PDK Authors
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
########################################################################
__version__ = '$Revision: #3 $'

from cni.dlo import *
from .geometry import *
from .utility_functions import *

import math

class simple_inductor(DloGen):

@classmethod
def defineParamSpecs(self, specs):
techparams = specs.tech.getTechParams()

CDFVersion = techparams['CDFVersion']

defS = '2.1u'
defW = '2u'
minS = defS
minW = defW
defNr_t = 1
minNr_t = 1
defL = '33.303pH'
defR = '577.7m'
model = 'simple_inductor'
grid = techparams['grid']
minDf = inductor_minD(2, 2.1, defNr_t, grid)
minD = str(minDf)+'u'
defD = minD

specs('cdf_version', CDFVersion, 'CDF Version')
specs('Display', 'Selected', 'Display', ChoiceConstraint(['All', 'Selected']))
specs('model', model, 'Model name')

specs('w', defW, 'Width')
specs('s', defS, 'Space')
specs('d', defD, 'The distance in the center of the inductor')
specs('r', '1m', 'Resistance')
specs('l', '1p', 'Inductance')
specs('nr_r', defNr_t, 'The number of turns')
specs('blockqrc', True, 'Block QRC layer')
specs('subE', False, 'Substrate Etching')

specs('lEstim', defL, 'Inductance (estim.)')
specs('rEstim', defR, 'Resistance (estim.)')

specs('Wmin', minW, 'Wmin')
specs('Smin', minS, 'Smin')
specs('Dmin', defD, 'Dmin')
specs('minNr_t', minNr_t, 'Minimum number of turns')
specs('mergeStat', 16, 'Layer mask')

def setupParams(self, params):
# process parameter values entered by user
self.params = params
self.w = params['w']
self.s = params['s']
self.d = params['d']
self.r = params['r']
self.l = params['l']
self.model = params['model']
self.nr_r = params['nr_r']
self.blockqrc = params['blockqrc']
self.subE = params['subE']

def genLayout(self):
w = self.w
s = self.s
d = self.d
r = self.r
l = self.l
model = self.model
nr_r = self.nr_r
blockqrc = self.blockqrc
subE = self.subE

cellName = self.__class__.__name__

w = GridFix(Numeric(w)*5e5)*2
s = GridFix(Numeric(s)*1e6)
d = GridFix(Numeric(d)*5e5)*2
d1 = d

# layers
TM2 = Layer('TopMetal2', 'drawing')
TM1 = Layer('TopMetal1', 'drawing')
TM2p = Layer('TopMetal2', 'pin')
TM1p = Layer('TopMetal1', 'pin')
TV2 = Layer('TopVia2', 'drawing')
IND = Layer('IND', 'drawing')
PWellBlock = Layer('PWell', 'block')
NoActFiller = Layer('Activ', 'nofill')
NoGatFiller = Layer('GatPoly', 'nofill')
NoMet1Filler = Layer('Metal1', 'nofill')
NoMet2Filler = Layer('Metal2', 'nofill')
NoMet3Filler = Layer('Metal3', 'nofill')
NoTMet1Filler = Layer('TopMetal1', 'nofill')
NoTMet2Filler = Layer('TopMetal2', 'nofill')
NoRCX = Layer('NoRCX', 'drawing')
substrateE = Layer('LBE', 'drawing')

self.techparams = self.tech.getTechParams()
self.epsilon = self.techparams['epsilon1']

nr_vias = round((w+0.06)/1.96-0.5)

var = 1+sqrt(2)
grid = 0.01
d = max(d, inductor_minD(w, s, nr_r, grid))

lat_sm = GridFix(d/(2*var))*2
lat_big = GridFix((d+2*w)/var)
cateta_sm = (d-lat_sm)/2
cateta_big = GridFix((d+2*w)/(var*sqrt(2)))

x1 = GridFix(lat_sm/2)-w
y1 = 30-w/2
x2 = GridFix(lat_big/2)
x = x1+(x2-x1)/2
y2 = nr_r*w+(nr_r-1)*s+30-w
x_cross = GridFix(w/sqrt(2)+s/2)
d_via_cross = GridFix(s*0.4143)+grid
d1_via_cross = GridFix(w*0.4143)+grid
x_via = x_cross+d_via_cross+grid

for pcIndexX in range(nr_r) :
# Draw side lines
if nr_r == 1 :
polyPoints1 = PointList([
Point(s/2, y2), Point(s/2, y2+w),
Point(lat_sm/2, y2+w), Point(d/2, y2+w+cateta_sm),
Point(d/2, y2+w+cateta_sm+lat_sm), Point(lat_sm/2, y2+w+d),
Point(-lat_sm/2, y2+w+d), Point(-d/2, y2+w+cateta_sm+lat_sm),
Point(-d/2, y2+w+cateta_sm), Point(-lat_sm/2, y2+w),
Point(-s/2, y2+w), Point(-s/2, y2),
Point(-lat_sm/2-d1_via_cross, y2), Point(-(d+2*w)/2, y2+w+cateta_sm-d1_via_cross),
Point(-(d+2*w)/2, y2+w+cateta_sm+lat_sm+d1_via_cross), Point(-lat_sm/2-d1_via_cross, y2+2*w+d),
Point(-x_via, y2+2*w+d), Point(x_via, y2+w*2+d),
Point(lat_sm/2+d1_via_cross, y2+d+2*w), Point((d+2*w)/2, y2+w+cateta_sm+lat_sm+d1_via_cross),
Point((d+2*w)/2, y2+w+cateta_sm-d1_via_cross), Point(lat_sm/2+d1_via_cross, y2)
])
else :
prev_y2 = y2+w+s
prev_d = d-2*(s+w+grid)
prev_lat_sm = GridFix(prev_d/(2*var))*2
delta_2turns = ((x_via+s+w)-s/2) if (nr_r == 2) else 0.0
delta_first = s/2 if pcIndexX == nr_r-1 else 0.0
delta_last = s/2 if pcIndexX == 0 else 0.0

prev_cateta_sm = (prev_d-prev_lat_sm)/2
polyPoints1 = PointList([
Point(0-delta_first, y2), Point(-lat_sm/2-d1_via_cross, y2),
Point(-(d+2*w)/2, y2+w+cateta_sm-d1_via_cross), Point(-(d+2*w)/2, y2+w+cateta_sm+lat_sm+d1_via_cross),
Point(-lat_sm/2-d1_via_cross, y2+d+2*w), Point(lat_sm/2+d1_via_cross, y2+d+2*w),
Point((d+2*w)/2, y2+w+cateta_sm+lat_sm+d1_via_cross), Point((d+2*w)/2, prev_y2+w+prev_cateta_sm-d1_via_cross),
Point((d+2*w)/2-w-prev_cateta_sm+d1_via_cross, prev_y2),Point(0+delta_last, prev_y2),
Point(0+delta_last, prev_y2+w), Point(d/2-prev_cateta_sm, prev_y2+w),
Point(d/2, prev_y2+w+prev_cateta_sm), Point(d/2, y2+w+cateta_sm+lat_sm),
Point(lat_sm/2, y2+w+d), Point(-lat_sm/2, y2+w+d),
Point(-d/2, y2+w+cateta_sm+lat_sm), Point(-d/2, y2+w+cateta_sm),
Point(-lat_sm/2, y2+w), Point(0-delta_first, y2+w)
])

dbCreatePolygon(self, TM2, polyPoints1)

# ID TAG
if pcIndexX == nr_r-1 :
dbCreateRect(self, IND, Box(-w/2-grid, y2+w*2+d+grid, w/2+grid, y2+w+d-grid))
dbCreateLabel(self, Layer('TEXT', 'drawing'), Point(0, y2+w+w/2+d), 'L2_TM2', 'centerCenter', 'R0', Font.EURO_STYLE, w/6)
dbCreateLabel(self, Layer('TEXT', 'drawing'), Point(0, y2+w+w/2+d+w/3), 'l='+l, 'centerCenter', 'R0', Font.EURO_STYLE, w/6)
dbCreateLabel(self, Layer('TEXT', 'drawing'), Point(0, y2+w+w/2+d-w/3), 'r='+r, 'centerCenter', 'R0', Font.EURO_STYLE, w/6)

y2 = y2-w-s
x1 = x_via
d = d+2*(s+w+grid)
lat_sm = GridFix(d/(2*var))*2
lat_big = GridFix((d+2*w)/var)
cateta_sm = (d-lat_sm)/2
cateta_big = GridFix((d+2*w)/(var*sqrt(2)))
# end for;


# Draw vias
x1 = (w+s)/2
x1_via = s/2+0.5+(w-nr_vias*0.9-(nr_vias-1)*1.06-1)/2
y1_via_l = y2+w+s+0.5+(w-nr_vias*0.9-(nr_vias-1)*1.06-1)/2
y1_via_r = y2+w+s+0.5+(w-nr_vias*0.9-(nr_vias-1)*1.06-1)/2+(nr_r)*w+(nr_r)*s

if nr_r >= 2 :
for pcIndex1 in range(int(nr_vias)) :
for pcIndex2 in range(int(nr_vias)) :
dbCreateRect(self, TV2, Box(-x1_via, y1_via_l, -(x1_via+0.9), y1_via_l+0.9))
dbCreateRect(self, TV2, Box(x1_via, y1_via_r, x1_via+0.9, y1_via_r+0.9))
x1_via = x1_via+1.96

x1_via = s/2+0.5+(w-nr_vias*0.9-(nr_vias-1)*1.06-1)/2
y1_via_l += 1.96
y1_via_r += 1.96


pinPathPoints1 = PointList([Point(-x1, -1), Point(-x1, w+30)])
if nr_r == 1 :
pinPathPoints2 = PointList([Point( x1, -1), Point( x1, (nr_r)*w+(nr_r-1)*s+30)])
else:
pinPathPoints2 = PointList([Point( x1, -1), Point( x1, (nr_r+1)*w+(nr_r)*s+30)])

if nr_r == 1 :
dbCreatePath(self, TM2, pinPathPoints1, w);
dbCreatePath(self, TM2, pinPathPoints2, w);
pcInst1 = dbCreateRect(self, TM2p, Box(x1-w/2, -1, x1+w/2, 1))
pcInst2 = dbCreateRect(self, TM2p, Box(-x1-w/2, -1, -x1+w/2, 1))
else :
dbCreatePath(self, TM1, pinPathPoints1, w);
dbCreatePath(self, TM1, pinPathPoints2, w);
pcInst1 = dbCreateRect(self, TM1p, Box(x1-w/2, -1, x1+w/2, 1))
pcInst2 = dbCreateRect(self, TM1p, Box(-x1-w/2, -1, -x1+w/2, 1))

pcPin = dbCreatePin(self, 'LB', pcInst1)
dbCreateLabel(self, Layer('TEXT', 'drawing'), Point(x1, 0), 'LB', 'centerCenter', 'R0', Font.EURO_STYLE, w/2)
pcPin = dbCreatePin(self, 'LA', pcInst2)
dbCreateLabel(self, Layer('TEXT', 'drawing'), Point(-x1, 0), 'LA', 'centerCenter', 'R0', Font.EURO_STYLE, w/2)

dbCreateLabel(self, Layer('TEXT', 'drawing'), Point(0, y2+cateta_sm/2+lat_sm), cellName, 'centerCenter', 'R0', Font.EURO_STYLE, w)

y2 = 0
d = d-2*s+2*30
lat_sm = GridFix(d/(2*var))*2
lat_big = GridFix((d+2*w)/var)
cateta_sm = (d-lat_sm)/2
cateta_big = GridFix((d+2*w)/(var*sqrt(2)))

polyPoints1 = PointList([Point(lat_sm/2, y2), Point(d/2, y2+cateta_sm), Point(d/2, y2+cateta_sm+lat_sm), Point(lat_sm/2, y2+d), Point(-lat_sm/2, y2+d),
Point(-d/2, y2+cateta_sm+lat_sm), Point(-d/2, y2+cateta_sm), Point(-lat_sm/2, y2)])
dbCreatePolygon(self, PWellBlock, polyPoints1)
dbCreatePolygon(self, NoActFiller, polyPoints1)
dbCreatePolygon(self, NoGatFiller, polyPoints1)
dbCreatePolygon(self, NoMet1Filler, polyPoints1)
dbCreatePolygon(self, NoMet2Filler, polyPoints1)
dbCreatePolygon(self, NoMet3Filler, polyPoints1)

dbCreatePolygon(self, NoTMet1Filler, polyPoints1)
dbCreatePolygon(self, NoTMet2Filler, polyPoints1)

if blockqrc :
dbCreatePolygon(self, NoRCX, polyPoints1)

if subE :
dbCreatePolygon(self, substrateE, polyPoints1)

y2 = 2*nr_r*w+2*(nr_r-1)*s
d = d1