* Copyright 2020 The SkyWater 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.

* SKY130 Spice File.
.param sky130_fd_pr__cap_vpp_04p4x04p6_m1m2_shieldl1__slope = 0.0
* statistics {
*   mismatch {
*     vary  sky130_fd_pr__cap_vpp_04p4x04p6_m1m2_shieldl1__slope dist=gauss std=0.00731
*   }
* }
.subckt  sky130_fd_pr__cap_vpp_04p4x04p6_m1m2_shieldl1 c0 c1 b
+ 
.param  mult = 1.0
+ 
+ ctot_a = {8.450e-15*sky130_fd_pr__cap_vpp_04p4x04p6_m1m2_shieldl1__cor+0.88861/sqrt(mult/0.463538)*sky130_fd_pr__cap_vpp_04p4x04p6_m1m2_shieldl1__slope*8.450e-15*sky130_fd_pr__cap_vpp_04p4x04p6_m1m2_shieldl1__cor}
+ cli2s = {1.864e-15*cli2s_vpp}
+ rat_m2 = 0.552
+ rat_m1 = 0.395
+ rat_m12li = 0.053
+ cap_m2 = {rat_m2*ctot_a}
+ cap_m1 = {rat_m1*ctot_a}
+ cap_m12li = {rat_m12li*ctot_a}
+ lm2 = 1.585
+ wm2 = 0.140
+ nfm2 = 24.0
+ nvia_c0 = 40.0
+ nvia_c1 = 18.0
+ lm1 = 1.665
+ wm1 = 0.140
+ nfm1 = 20.0
+ nmcon = 42.0
rm21 c0 a1 r = {rm2*lm2/wm2*(1/3)*(1/nfm2)}
ccmvpp4p4x4p6_lishield a1 c1  c = {cap_m2}
rvia1 c0 d0 r = {rcvia/nvia_c0}
rvia2 c1 d1 r = {rcvia/nvia_c1}
rm11 d0 b1 r = {rm1*lm1/wm1*(1/3)*(1/nfm1)}
cm1 b1 d1 c = {cap_m1}
rmcon d0 e0 r = {rcl1/nmcon}
rliw e0 f0 r = {rl1}
cli2b f0 b c = {cli2s}
cm12li d1 f0 c = {cap_m12li}
.ends sky130_fd_pr__cap_vpp_04p4x04p6_m1m2_shieldl1