* SPICE3 file created from bottom_pixel.ext - technology: sky130B

.subckt dram_cell WWL WBL RWL RBL VSUBS
X0 RWL storage RBL VSUBS sky130_fd_pr__nfet_01v8 ad=3e+11p pd=2.6e+06u as=3.5e+11p ps=2.7e+06u w=1e+06u l=150000u
X1 storage WWL WBL VSUBS sky130_fd_pr__nfet_01v8 ad=3.5e+11p pd=2.7e+06u as=3e+11p ps=2.6e+06u w=1e+06u l=150000u
.ends

.subckt dram_array dram_cell_1/WWL dram_cell_1/RWL dram_cell_0/WBL dram_cell_1/WBL
+ dram_cell_1/RBL dram_cell_0/RBL VSUBS dram_cell_0/RWL
Xdram_cell_0 dram_cell_1/WWL dram_cell_0/WBL dram_cell_0/RWL dram_cell_0/RBL VSUBS
+ dram_cell
Xdram_cell_1 dram_cell_1/WWL dram_cell_1/WBL dram_cell_1/RWL dram_cell_1/RBL VSUBS
+ dram_cell
.ends

.subckt x4bit_dram dram_array_1/dram_cell_0/WBL dram_array_1/dram_cell_1/WWL dram_array_1/dram_cell_0/RBL
+ dram_array_1/dram_cell_1/WBL dram_array_1/dram_cell_0/RWL dram_array_0/dram_cell_0/RBL
+ dram_array_0/dram_cell_1/WBL dram_array_0/dram_cell_1/RBL dram_array_1/dram_cell_1/RBL
+ dram_array_0/dram_cell_0/WBL VSUBS
Xdram_array_0 dram_array_1/dram_cell_1/WWL dram_array_1/dram_cell_0/RWL dram_array_0/dram_cell_0/WBL
+ dram_array_0/dram_cell_1/WBL dram_array_0/dram_cell_1/RBL dram_array_0/dram_cell_0/RBL
+ VSUBS dram_array_1/dram_cell_0/RWL dram_array
Xdram_array_1 dram_array_1/dram_cell_1/WWL dram_array_1/dram_cell_1/RWL dram_array_1/dram_cell_0/WBL
+ dram_array_1/dram_cell_1/WBL dram_array_1/dram_cell_1/RBL dram_array_1/dram_cell_0/RBL
+ VSUBS dram_array_1/dram_cell_0/RWL dram_array
.ends

.subckt x8bit_dram 4bit_dram_1/dram_array_1/dram_cell_1/WBL 4bit_dram_0/dram_array_1/dram_cell_0/WBL
+ 4bit_dram_1/dram_array_0/dram_cell_0/RBL 4bit_dram_0/dram_array_1/dram_cell_0/RBL
+ 4bit_dram_1/dram_array_0/dram_cell_1/WBL 4bit_dram_0/dram_array_1/dram_cell_1/WBL
+ 4bit_dram_1/dram_array_1/dram_cell_0/RBL 4bit_dram_1/dram_array_0/dram_cell_0/WBL
+ 4bit_dram_0/dram_array_0/dram_cell_0/RBL 4bit_dram_0/dram_array_0/dram_cell_1/WBL
+ 4bit_dram_1/dram_array_1/dram_cell_1/RBL 4bit_dram_0/dram_array_1/dram_cell_1/RBL
+ 4bit_dram_1/dram_array_1/dram_cell_0/RWL 4bit_dram_1/dram_array_1/dram_cell_1/WWL
+ 4bit_dram_1/dram_array_0/dram_cell_1/RBL 4bit_dram_0/dram_array_0/dram_cell_1/RBL
+ 4bit_dram_1/dram_array_1/dram_cell_0/WBL VSUBS 4bit_dram_0/dram_array_0/dram_cell_0/WBL
X4bit_dram_1 4bit_dram_1/dram_array_1/dram_cell_0/WBL 4bit_dram_1/dram_array_1/dram_cell_1/WWL
+ 4bit_dram_1/dram_array_1/dram_cell_0/RBL 4bit_dram_1/dram_array_1/dram_cell_1/WBL
+ 4bit_dram_1/dram_array_1/dram_cell_0/RWL 4bit_dram_1/dram_array_0/dram_cell_0/RBL
+ 4bit_dram_1/dram_array_0/dram_cell_1/WBL 4bit_dram_1/dram_array_0/dram_cell_1/RBL
+ 4bit_dram_1/dram_array_1/dram_cell_1/RBL 4bit_dram_1/dram_array_0/dram_cell_0/WBL
+ VSUBS x4bit_dram
X4bit_dram_0 4bit_dram_0/dram_array_1/dram_cell_0/WBL 4bit_dram_1/dram_array_1/dram_cell_1/WWL
+ 4bit_dram_0/dram_array_1/dram_cell_0/RBL 4bit_dram_0/dram_array_1/dram_cell_1/WBL
+ 4bit_dram_1/dram_array_1/dram_cell_0/RWL 4bit_dram_0/dram_array_0/dram_cell_0/RBL
+ 4bit_dram_0/dram_array_0/dram_cell_1/WBL 4bit_dram_0/dram_array_0/dram_cell_1/RBL
+ 4bit_dram_0/dram_array_1/dram_cell_1/RBL 4bit_dram_0/dram_array_0/dram_cell_0/WBL
+ VSUBS x4bit_dram
.ends

.subckt sens_amp V_IN SA_IREF OUT REF VDD GND
X0 GN GN VDD VDD sky130_fd_pr__pfet_01v8_lvt ad=3.5e+11p pd=2.7e+06u as=1.8e+12p ps=1.22e+07u w=1e+06u l=500000u
X1 net1 V_IN net2 GND sky130_fd_pr__nfet_01v8_lvt ad=1.4e+12p pd=8.7e+06u as=1.775e+12p ps=1.05e+07u w=4e+06u l=150000u
X2 net2 REF GN GND sky130_fd_pr__nfet_01v8_lvt ad=0p pd=0u as=1.45e+12p ps=9.1e+06u w=4e+06u l=150000u
X3 net1 GN VDD VDD sky130_fd_pr__pfet_01v8_lvt ad=3.5e+11p pd=2.7e+06u as=0p ps=0u w=1e+06u l=500000u
X4 net2 SA_IREF GND GND sky130_fd_pr__nfet_01v8_lvt ad=0p pd=0u as=6e+11p ps=4.7e+06u w=500000u l=1e+06u
X5 OUT net1 VDD VDD sky130_fd_pr__pfet_01v8_lvt ad=1.05e+12p pd=6.7e+06u as=0p ps=0u w=3e+06u l=350000u
X6 OUT net1 GND GND sky130_fd_pr__nfet_01v8_lvt ad=3.5e+11p pd=2.7e+06u as=0p ps=0u w=1e+06u l=150000u
C0 VDD GND 2.64fF
.ends

.subckt x8bit_sens INx1x INx0x INx2x INx3x INx4x INx5x INx6x INx7x OUTx7x OUTx6x OUTx5x
+ OUTx4x OUTx3x OUTx2x OUTx1x OUTx0x SA_IREF VREF VDD GND
Xsens_amp_2 INx5x SA_IREF OUTx5x VREF VDD GND sens_amp
Xsens_amp_3 INx4x SA_IREF OUTx4x VREF VDD GND sens_amp
Xsens_amp_4 INx3x SA_IREF OUTx3x VREF VDD GND sens_amp
Xsens_amp_5 INx2x SA_IREF OUTx2x VREF VDD GND sens_amp
Xsens_amp_6 INx1x SA_IREF OUTx1x VREF VDD GND sens_amp
Xsens_amp_7 INx0x SA_IREF OUTx0x VREF VDD GND sens_amp
Xsens_amp_0 INx7x SA_IREF OUTx7x VREF VDD GND sens_amp
Xsens_amp_1 INx6x SA_IREF OUTx6x VREF VDD GND sens_amp
C0 SA_IREF GND 6.25fF
C1 VDD GND 16.99fF
.ends

.subckt bottom_pixel VREF PIX_OUT ROW_SEL CSA_VREF SF_IB NB1 PIX_IN READ BIAS2 BIAS1
+ V_RAMP GRAYx0x OUTx1x OUTx0x OUTx3x OUTx2x OUTx5x OUTx4x GRAYx6x GRAYx7x OUTx6x
+ OUTx7x GRAYx5x GRAYx4x GRAYx3x GRAYx2x GRAYx1x VBIAS NB2 gring ARRAY_OUT COL_SEL
+ DVDD VDD GND
X8bit_dram_0 GRAYx7x GRAYx2x OUTx4x OUTx2x GRAYx5x GRAYx3x OUTx6x GRAYx4x OUTx0x GRAYx1x
+ OUTx7x OUTx3x READ 8bit_dram_0/4bit_dram_1/dram_array_1/dram_cell_1/WWL OUTx5x OUTx1x
+ GRAYx6x GND GRAYx0x x8bit_dram
X8bit_sens_0 OUTx1x OUTx0x OUTx2x OUTx3x OUTx4x OUTx5x OUTx6x OUTx7x 8bit_sens_0/OUTx7x
+ 8bit_sens_0/OUTx6x 8bit_sens_0/OUTx5x 8bit_sens_0/OUTx4x 8bit_sens_0/OUTx3x 8bit_sens_0/OUTx2x
+ 8bit_sens_0/OUTx1x 8bit_sens_0/OUTx0x 8bit_sens_0/SA_IREF 8bit_sens_0/VREF 8bit_sens_0/VDD
+ GND x8bit_sens
X0 a_2200_n380# ROW_SEL PIX_OUT GND sky130_fd_pr__nfet_01v8_lvt ad=6.5e+11p pd=5e+06u as=3.8e+12p ps=2.17e+07u w=2e+06u l=1e+06u
X1 DVDD a_1000_n1450# a_1000_n1450# DVDD sky130_fd_pr__pfet_01v8_lvt ad=1.45e+12p pd=1.09e+07u as=3.5e+11p ps=2.7e+06u w=1e+06u l=1e+06u
X2 8bit_dram_0/4bit_dram_1/dram_array_1/dram_cell_1/WWL a_1870_n1400# GND GND sky130_fd_pr__nfet_01v8 ad=4e+11p pd=2.8e+06u as=4.80002e+12p ps=3.7605e+07u w=1e+06u l=150000u
X3 GND NB1 a_n30_n2640# GND sky130_fd_pr__nfet_01v8_lvt ad=0p pd=0u as=3.22e+12p ps=1.79e+07u w=1.2e+06u l=1e+06u
X4 a_n140_n550# VBIAS a_n140_n780# GND sky130_fd_pr__nfet_01v8_lvt ad=3.5e+11p pd=2.7e+06u as=2.1525e+12p ps=1.76e+07u w=1e+06u l=800000u
X5 a_1720_n1450# V_RAMP a_1100_n1450# GND sky130_fd_pr__nfet_01v8_lvt ad=3.5e+11p pd=2.7e+06u as=8.8e+11p ps=7.1e+06u w=1e+06u l=150000u
X6 a_1870_n1400# a_1720_n1450# DVDD DVDD sky130_fd_pr__pfet_01v8_lvt ad=3.5e+11p pd=2.7e+06u as=0p ps=0u w=1e+06u l=450000u
X7 a_1100_n1450# AMP_OUT a_1000_n1450# GND sky130_fd_pr__nfet_01v8_lvt ad=0p pd=0u as=3.5e+11p ps=2.7e+06u w=1e+06u l=150000u
X8 a_2287_n292# AMP_OUT GND VDD sky130_fd_pr__pfet_01v8_lvt ad=5e+11p pd=3e+06u as=5.44002e+12p ps=2.801e+07u w=1e+06u l=1e+06u
X9 8bit_dram_0/4bit_dram_1/dram_array_1/dram_cell_1/WWL a_1870_n1400# DVDD DVDD sky130_fd_pr__pfet_01v8 ad=3.5e+11p pd=2.7e+06u as=0p ps=0u w=1e+06u l=200000u
X10 AMP_OUT NB2 a_300_n1210# GND sky130_fd_pr__nfet_01v8_lvt ad=6.975e+11p pd=5.7e+06u as=4e+11p ps=2.8e+06u w=1e+06u l=1.2e+06u
X11 a_1100_n1450# BIAS1 GND GND sky130_fd_pr__nfet_01v8 ad=0p pd=0u as=0p ps=0u w=450000u l=1e+06u
X12 a_350_10# a_n140_n550# a_n140_n550# VDD sky130_fd_pr__pfet_01v8_lvt ad=3.5e+11p pd=2.7e+06u as=3.5e+11p ps=2.7e+06u w=1e+06u l=2e+06u
X13 VDD SF_IB a_2287_n292# VDD sky130_fd_pr__pfet_01v8_lvt ad=1.05e+12p pd=8.1e+06u as=0p ps=0u w=1e+06u l=1e+06u
X14 PIX_IN AMP_OUT sky130_fd_pr__cap_mim_m3_1 l=2e+06u w=2e+06u
X15 a_n30_n2640# VREF a_n140_n780# GND sky130_fd_pr__nfet_01v8_lvt ad=0p pd=0u as=0p ps=0u w=7e+06u l=150000u
X16 VDD a_350_10# a_350_10# VDD sky130_fd_pr__pfet_01v8_lvt ad=0p pd=0u as=0p ps=0u w=1e+06u l=2e+06u
X17 a_1460_10# a_350_10# VDD VDD sky130_fd_pr__pfet_01v8_lvt ad=3.5e+11p pd=2.7e+06u as=0p ps=0u w=1e+06u l=2e+06u
X18 AMP_OUT CSA_VREF PIX_IN VDD sky130_fd_pr__pfet_01v8_lvt ad=2.94e+11p pd=2.24e+06u as=2.73e+11p ps=2.14e+06u w=420000u l=8e+06u
X19 a_1870_n1400# BIAS2 GND GND sky130_fd_pr__nfet_01v8_lvt ad=3.5e+11p pd=2.7e+06u as=0p ps=0u w=1e+06u l=1e+06u
X20 a_120_n550# a_n140_n550# a_1460_10# VDD sky130_fd_pr__pfet_01v8_lvt ad=3.5e+11p pd=2.7e+06u as=0p ps=0u w=1e+06u l=2e+06u
X21 a_120_n550# VBIAS a_120_n780# GND sky130_fd_pr__nfet_01v8_lvt ad=3.5e+11p pd=2.7e+06u as=2.1525e+12p ps=1.76e+07u w=1e+06u l=800000u
X22 a_120_n780# PIX_IN a_n30_n2640# GND sky130_fd_pr__nfet_01v8_lvt ad=0p pd=0u as=0p ps=0u w=7e+06u l=150000u
X23 a_1720_n1450# a_1000_n1450# DVDD DVDD sky130_fd_pr__pfet_01v8_lvt ad=3.5e+11p pd=2.7e+06u as=0p ps=0u w=1e+06u l=1e+06u
X24 ARRAY_OUT COL_SEL PIX_OUT GND sky130_fd_pr__nfet_01v8_lvt ad=2.8e+12p pd=1.67e+07u as=0p ps=0u w=8e+06u l=200000u
X25 VDD a_120_n550# AMP_OUT GND sky130_fd_pr__nfet_01v8_lvt ad=1.185e+12p pd=8.4e+06u as=0p ps=0u w=1e+06u l=1e+06u
X26 VDD a_2287_n292# a_2200_n380# GND sky130_fd_pr__nfet_01v8_lvt ad=0p pd=0u as=0p ps=0u w=1e+06u l=150000u
C0 PIX_OUT ARRAY_OUT 3.10fF
C1 PIX_IN gring 3.01fF
C2 gring GND 2.82fF
C3 ARRAY_OUT GND 4.28fF
C4 PIX_OUT GND 4.31fF
C5 DVDD GND 3.42fF
C6 VDD GND 6.42fF
C7 AMP_OUT GND 2.80fF
C8 8bit_sens_0/SA_IREF GND 6.07fF
C9 8bit_sens_0/VDD GND 17.51fF
C10 8bit_dram_0/4bit_dram_1/dram_array_1/dram_cell_1/WWL GND 2.55fF
.ends