Preparing pictures for presentation

openfasoc/generators/glayout/glayout/flow/blocks/composite/regulated_cascoded_current_mirror/gen_netlist.txt

@@ -1,7 +1,7 @@
 
 
-.subckt CurrentMirror VREF VCOPY VDD
-XA VREF VREF VDD VDD sky130_fd_pr__pfet_01v8 l=1 w=3 m=2 nf=1
-XB VCOPY VREF VDD VDD sky130_fd_pr__pfet_01v8 l=1 w=3 m=2 nf=1
-XDUMMY VDD VDD VDD VDD sky130_fd_pr__pfet_01v8 l=1 w=3 m=2
+.subckt CurrentMirror VREF VCOPY VSS
+XA VREF VREF VSS VSS sky130_fd_pr__nfet_01v8 l=0.5 w=3 m=2 nf=1
+XB VCOPY VREF VSS VSS sky130_fd_pr__nfet_01v8 l=0.5 w=3 m=2 nf=1
+XDUMMY VSS VSS VSS VSS sky130_fd_pr__nfet_01v8 l=0.5 w=3 m=2
 .ends CurrentMirror

openfasoc/generators/glayout/glayout/flow/blocks/composite/regulated_cascoded_current_mirror/regulated_cascoded_current_mirror.py

@@ -176,18 +176,18 @@ def CurrentMirror(
 
     source_short = CurrentMirror << c_route(pdk,CurrentMirror.ports["currm_A_source_E"],CurrentMirror.ports["currm_B_source_E"],fullbottom=True)
 
-
-    # Connecting dummies to the welltie
-    try:
-        CurrentMirror << straight_route(pdk, CurrentMirror.ports["A_0_dummy_L_gsdcon_top_met_W"],CurrentMirror.ports["welltie_W_top_met_W"],glayer2="met1")
-    except KeyError:
-        pass
-    try:
-        end_col = num_cols - 1
-        port1 = f'B_{end_col}_dummy_R_gdscon_top_met_E'
-        CurrentMirror << straight_route(pdk, CurrentMirror.ports[port1], CurrentMirror.ports["welltie_E_top_met_E"], glayer2="met1")
-    except KeyError:
-        pass
+    if with_dummy:
+        # Connecting dummies to the welltie
+        try:
+            CurrentMirror << straight_route(pdk, CurrentMirror.ports["A_0_dummy_L_gsdcon_top_met_W"],CurrentMirror.ports["welltie_W_top_met_W"],glayer2="met1")
+        except KeyError:
+            pass
+        try:
+            end_col = num_cols - 1
+            port1 = f'B_{end_col}_dummy_R_gdscon_top_met_E'
+            CurrentMirror << straight_route(pdk, CurrentMirror.ports[port1], CurrentMirror.ports["welltie_E_top_met_E"], glayer2="met1")
+        except KeyError:
+            pass
 
 
      # add well (probably unnecessary)
@@ -202,7 +202,7 @@ def CurrentMirror(
     else:
         raise ValueError("type must be either nfet or pfet")
 
-    
+
     #Connecting the source of the fets to the bulk ???
     src2bulk=CurrentMirror << straight_route(pdk, source_short.ports["con_N"],CurrentMirror.ports["currm_welltie_N_top_met_W"], glayer2="met2")
 
@@ -316,10 +316,12 @@ def sky130_add_current_mirror_labels(
 
 # Main function to generate the current mirror layout
 # mappedpdk, Width, Length, num_cols, fingers, transistor type
-comp = CurrentMirror(sky130,3,1,2,1, type='nfet', with_substrate_tap=False, with_tie=True)
+comp = CurrentMirror(sky130,3,0.5,2,1, type='nfet')
 # Add labels to the current mirror layout
 comp = sky130_add_current_mirror_labels(comp, transistor_type='nfet', pdk=sky130)
 
+
+
 # Write the current mirror layout to a GDS file
 comp.name = "CM"
 delete_files_in_directory("GDS/")