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71 lines
2.2 KiB
Plaintext
71 lines
2.2 KiB
Plaintext
* Copyright 2020 The SkyWater PDK Authors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* https://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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* SKY130 Spice File.
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* statistics {
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* mismatch {
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* }
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* }
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* 4-terminal Vertical Parallel Plate Capacitor /w LI-M4 fingers and M5 Shield
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* 3-terminal Vertical Parallel Plate Capacitor /w LI-M5 Shield
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* This is the ~12fF fixed capacitor model
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* Layout: sky130_fd_pr__cap_vpp_04p4x04p6_m1m2m3_shieldl1m5_floatm4
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.subckt sky130_fd_pr__cap_vpp_04p4x04p6_m1m2m3_shieldl1m5_floatm4 c0 c1 b m5
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+
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.param mult = 1.0
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+
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+ ctot_a = {10.778e-15*sky130_fd_pr__cap_vpp_04p4x04p6_m1m2m3_shieldl1__cor+1.03730/sqrt(mult/0.35078)*0.00731*10.778e-15*sky130_fd_pr__cap_vpp_04p4x04p6_m1m2m3_shieldl1__cor*sky130_fd_pr__model__cap_vpp_only_p__slope}
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+ cli2s = {1.840e-15*cli2s_vpp}
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+ rat_m3 = 0.1636
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+ rat_m2 = 0.4604
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+ rat_m1 = 0.3318
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+ rat_m12li = 0.0442
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+ cap_m3 = {rat_m3*ctot_a}
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+ cap_m2 = {rat_m2*ctot_a}
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+ cap_m1 = {rat_m1*ctot_a}
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+ cap_m12li = {rat_m12li*ctot_a}
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+ cm5_c0 = {7.39e-16*c0m5m3_vpp}
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+ cm5_c1 = {2.63e-16*c1m5m3_vpp}
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+ lm3 = 1.50
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+ wm3 = 0.30
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+ nfm3 = 10.0
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+ nvia2_c0 = 32.0
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+ nvia2_c1 = 13.0
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+ lm2 = 1.585
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+ wm2 = 0.140
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+ nfm2 = 28.0
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+ nvia_c0 = 40.0
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+ nvia_c1 = 18.0
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+ lm1 = 1.665
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+ wm1 = 0.140
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+ nfm1 = 20.0
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+ nmcon = 42.0
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ccmvpp4p4x4p6_m3_lim5shield m5 c0 c = {cm5_c0}
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cm5_1 m5 c1 c = {cm5_c1}
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rm31 c0 z1 r = {rm3*lm3/wm3*(1/3)*(1/nfm3)}
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cm3 z1 c1 c = {cap_m3}
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rvia2_1 c0 d0 r = {rcvia2/nvia2_c0}
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rvia2_2 c1 d1 r = {rcvia2/nvia2_c1}
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rm21 d0 a1 r = {rm2*lm2/wm2*(1/3)*(1/nfm2)}
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cm2 a1 d1 c = {cap_m2}
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rvia1 d0 e0 r = {rcvia/nvia_c0}
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rvia2 d1 e1 r = {rcvia/nvia_c1}
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rm11 e0 b1 r = {rm1*lm1/wm1*(1/3)*(1/nfm1)}
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cm1 b1 e1 c = {cap_m1}
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rmcon e0 f0 r = {rcl1/nmcon}
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rliw f0 g0 r = {rl1}
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cli2b g0 b c = {cli2s}
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cm12li e1 g0 c = {cap_m12li}
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.ends sky130_fd_pr__cap_vpp_04p4x04p6_m1m2m3_shieldl1m5_floatm4
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