| * 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. |
| * statistics { |
| * mismatch { |
| * } |
| * } |
| .subckt sky130_fd_pr__res_high_po r0 r1 |
| + w=1 l=1 |
| .param mult = 1.0 |
| + rsheet = 317.3885 |
| + rbody_dw = -0.001 |
| + rhead_ps = 345.8312 |
| + mm_const = {(w<0.69)?0.1:0.2} |
| + body_pelgrom = 0.03552 |
| + head_pelgrom = 0.0761 |
| + num_con_row = {max(floor(0.5+(w-0.33)/0.36),1)} |
| + rbody_match = {body_pelgrom/sqrt(w*l*mult)*sky130_fd_pr__res_high_po__slope_spectre} |
| + rend_match = {head_pelgrom/sqrt((w+0.525)*num_con_row*mult)*sky130_fd_pr__res_high_po__con_slope_spectre} |
| + weff = {w+rbody_dw-0.0672*max(0.69-w,0)} |
| + rbody = {rsheet*(l+0.247)/weff*(1+rbody_match)} |
| + rhead = {rhead_ps/(weff+0.1558)*(1+rend_match)} |
| rbody r0 rb r = {rbody*(1+v(r0,r1))} |
| rhead rb r1 r = {rhead} |
| .ends sky130_fd_pr__res_high_po |
