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70 lines
2.2 KiB
Plaintext
70 lines
2.2 KiB
Plaintext
2 years ago
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* 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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* High Density 3-terminal Vertical Parallel Plate Capacitor
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* Layout: sky130_fd_pr__cap_vpp_02p9x06p1_m1m2m3m4_shieldl1_fingercap2
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.subckt sky130_fd_pr__cap_vpp_02p9x06p1_m1m2m3m4_shieldl1_fingercap2 c0 c1 b
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+
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.param mult = 1.0
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+
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+ ctot_a = {12.65e-15*sky130_fd_pr__model__cap_vpp_finger__cor+0.0283/sqrt(mult*2*6.1*2.85)*12.65e-15*sky130_fd_pr__model__cap_vpp_finger__cor*sky130_fd_pr__model__cap_vpp_only_p__slope}
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+ c0_sub = {1.225e-15*cli2s_vpp}
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+ c1_sub = {0.712e-15*cli2s_vpp}
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+ rat_m4 = 0.125
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+ rat_m3 = 0.125
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+ rat_m2 = 0.375
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+ rat_m1 = 0.375
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+ cap_m4 = {rat_m4*ctot_a}
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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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+ lm1 = {6.1-0.96}
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+ lm2 = {6.1-0.96}
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+ lm3 = {6.1-0.96}
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+ lm4 = {6.1-0.96}
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+ wm1 = 0.160
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+ wm2 = 0.160
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+ wm3 = 0.300
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+ wm4 = 0.300
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+ nfm1 = 9.0
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+ nfm2 = 9.0
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+ nfm3 = 5.0
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+ nfm4 = 5.0
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+ nvia3 = 5.0
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+ nvia2 = 5.0
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+ nvia = 5.0
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ccmvpp_hd5_atlas_fingercap2_l5 a2 a1 c = {cap_m4}
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rsm4 a0 a2 r = {rm4*lm4/wm4*(1/3)*(1/nfm4)}
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rvia3_0 a0 b0 r = {rcvia3/nvia3}
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rvia3_1 a1 b1 r = {rcvia3/nvia3}
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rsm3 b0 b2 r = {rm3*lm3/wm3*(1/3)*(1/nfm3)}
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cm3 b2 b1 c = {cap_m3}
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rvia2_0 b0 c0 r = {rcvia2/nvia2}
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rvia2_1 b1 c1 r = {rcvia2/nvia2}
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rsm2 c0 c2 r = {(rm2*lm2/wm2*(1/3)*(1/nfm2)+rm2*lm2/wm2)}
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cm2 c2 c1 c = {cap_m2}
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rvia_0 c0 d0 r = {rcvia/nvia}
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rvia_1 c1 d1 r = {rcvia/nvia}
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rsm1 d0 d2 r = {rm1*lm1/wm1*(1/3)*(1/nfm1)}
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cm1 d2 d1 c = {cap_m1}
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cm12b_0 d0 b c = {c0_sub}
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cm12b_1 d1 b c = {c1_sub}
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.ends sky130_fd_pr__cap_vpp_02p9x06p1_m1m2m3m4_shieldl1_fingercap2
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