| v {xschem version=2.9.9 file_version=1.2 } |
| G {} |
| K {} |
| V {} |
| S {} |
| E {} |
| N 3590 -3720 3790 -3720 { lab=#net1} |
| N 3590 -3810 3590 -3780 { lab=#net2} |
| N 3590 -3810 3790 -3810 { lab=#net2} |
| N 3510 -3930 3510 -3820 { lab=VDD} |
| N 3510 -3930 3930 -3930 { lab=VDD} |
| N 3930 -3930 3930 -3860 { lab=VDD} |
| N 4230 -3730 4230 -3710 { lab=ldo_out} |
| N 4230 -3560 4230 -3540 { lab=pos} |
| N 4230 -3870 4230 -3790 { lab=VDD} |
| N 4230 -3760 4330 -3760 { lab=VDD} |
| N 4330 -3870 4330 -3760 { lab=VDD} |
| N 4150 -3550 4230 -3550 { lab=pos} |
| N 4230 -3720 4330 -3720 { lab=ldo_out} |
| N 4330 -3720 4370 -3720 { lab=ldo_out} |
| N 4230 -3950 4230 -3870 { lab=VDD} |
| N 4330 -3950 4330 -3870 { lab=VDD} |
| N 4230 -3950 4330 -3950 { lab=VDD} |
| N 4230 -3650 4230 -3640 { lab=#net3} |
| N 4230 -3580 4230 -3570 { lab=pos} |
| N 4250 -3660 4250 -3610 { lab=GND} |
| N 4250 -3680 4250 -3660 { lab=GND} |
| N 4230 -3570 4230 -3560 { lab=pos} |
| N 4230 -3480 4230 -3470 { lab=#net4} |
| N 4250 -3510 4250 -3440 { lab=GND} |
| N 4250 -3440 4250 -3410 { lab=GND} |
| N 4240 -3410 4250 -3410 { lab=GND} |
| N 4230 -3410 4240 -3410 { lab=GND} |
| N 4230 -3410 4230 -3400 { lab=GND} |
| N 4250 -3600 4250 -3510 { lab=GND} |
| N 4250 -3610 4250 -3600 { lab=GND} |
| N 4230 -3410 4230 -3370 { lab=GND} |
| N 4230 -3370 4230 -3360 { lab=GND} |
| N 3930 -3930 4230 -3930 { lab=VDD} |
| N 4090 -3760 4190 -3760 { lab=#net5} |
| N 4090 -3760 4090 -3720 { lab=#net5} |
| N 3510 -3670 3510 -3650 { lab=GND} |
| N 3930 -3560 3930 -3540 { lab=GND} |
| N 4070 -3550 4150 -3550 { lab=pos} |
| N 4070 -3550 4070 -3400 { lab=pos} |
| N 3750 -3400 4070 -3400 { lab=pos} |
| N 3750 -3630 3750 -3400 { lab=pos} |
| N 3750 -3630 3790 -3630 { lab=pos} |
| N 3410 -3750 3440 -3750 { lab=en} |
| N 3030 -3530 3030 -3490 { lab=GND} |
| N 3030 -3610 3030 -3590 { lab=VDD} |
| N 2800 -3620 2800 -3600 { lab=en} |
| N 2800 -3540 2800 -3510 { lab=GND} |
| N 3820 -3970 3820 -3930 { lab=VDD} |
| N 3030 -3750 3030 -3610 { lab=VDD} |
| N 3030 -3750 3040 -3750 { lab=VDD} |
| C {ldo_v2/bgr2.sym} 2150 -2100 0 0 {name=xb2} |
| C {ldo_v1/Error_Amp.sym} 3030 -2340 0 0 {name=xy1} |
| C {sky130_fd_pr/pfet_g5v0d10v5.sym} 4210 -3760 0 0 {name=M24 |
| L=0.5 |
| W=10 |
| nf=1 |
| mult=800 |
| ad="'int((nf+1)/2) * W/nf * 0.29'" |
| pd="'2*int((nf+1)/2) * (W/nf + 0.29)'" |
| as="'int((nf+2)/2) * W/nf * 0.29'" |
| ps="'2*int((nf+2)/2) * (W/nf + 0.29)'" |
| nrd="'0.29 / W'" nrs="'0.29 / W'" |
| sa=0 sb=0 sd=0 |
| model=pfet_g5v0d10v5 |
| spiceprefix=X |
| } |
| C {devices/lab_pin.sym} 4150 -3550 1 0 {name=l25 sig_type=std_logic lab=pos} |
| C {sky130_fd_pr/res_xhigh_po_0p69.sym} 4230 -3610 0 1 {name=R2 |
| W=0.69 |
| L=24 |
| model=res_xhigh_po_0p69 |
| spiceprefix=X |
| mult=3} |
| C {sky130_fd_pr/res_xhigh_po_0p69.sym} 4230 -3680 0 1 {name=R3 |
| W=0.69 |
| L=24 |
| model=res_xhigh_po_0p69 |
| spiceprefix=X |
| mult=8} |
| C {sky130_fd_pr/res_xhigh_po_0p69.sym} 4230 -3510 0 1 {name=R1 |
| W=0.69 |
| L=24 |
| model=res_xhigh_po_0p69 |
| spiceprefix=X |
| mult=2} |
| C {sky130_fd_pr/res_xhigh_po_0p69.sym} 4230 -3440 0 1 {name=R4 |
| W=0.69 |
| L=24 |
| model=res_xhigh_po_0p69 |
| spiceprefix=X |
| mult=4} |
| C {devices/gnd.sym} 4230 -3360 0 0 {name=l2 lab=GND} |
| C {devices/opin.sym} 4320 -3720 0 0 {name=p3 lab=ldo_out |
| } |
| C {devices/gnd.sym} 3930 -3540 0 0 {name=l1 lab=GND} |
| C {devices/gnd.sym} 3510 -3650 0 0 {name=l3 lab=GND} |
| C {devices/vsource.sym} 3030 -3560 0 0 {name=Vs value=2.3} |
| C {devices/vsource.sym} 2800 -3570 0 0 {name=Ven value=2.3} |
| C {devices/lab_pin.sym} 2800 -3620 0 0 {name=l27 sig_type=std_logic lab=en} |
| C {devices/gnd.sym} 3030 -3490 0 0 {name=l4 lab=GND} |
| C {devices/gnd.sym} 2800 -3510 0 0 {name=l5 lab=GND} |
| C {devices/vdd.sym} 3820 -3970 0 0 {name=l7 lab=VDD} |
| C {devices/vdd.sym} 3040 -3750 0 0 {name=l8 lab=VDD} |
| C {devices/code_shown.sym} 4760 -4550 0 0 {name= SPICE1 only_toplevel="false" value= |
| " |
| |
| .param R=36k |
| R10 ldo_out GND \{R\} |
| IL ldo_out 0 PWL(0 0.1m 10u 0.1m 20u 10m 30u 10m) |
| *CL ldo_out gnd 10p |
| .lib "/home/mustafa/mabrains/pdks/share/pdk/sky130A/libs.tech/ngspice/sky130.lib_mod.spice" tt |
| |
| |
| |
| |
| |
| .nodeset v(x1.inn)=1.2 |
| .nodeset v(x1.inp)=1.2 |
| .nodeset v(x1.mir)=1 |
| .nodeset v(x1.net5)=1 |
| .nodeset v(x1.bg_out)=1.1 |
| .nodeset v(ldo_out)=1.8 |
| .nodeset v(pos)=1.1 |
| *.nodeset v(net3)=0.8 |
| *.nodeset v(net1)=0.7 |
| .nodeset v(x1.net6)=0.9 |
| *.nodeset v(net7)=0.75 |
| .nodeset v(xy1.vb)=0.9 |
| |
| |
| .option temp=27 |
| *User_defined_functions |
| .control |
| define max(vector_name) (vecmax(vector_name)) |
| define min(vector_name) (vecmin(vector_name)) |
| .endc |
| |
| |
| *Temp_sweep |
| .control |
| alter IL 0 |
| dc temp 85 0 -1 |
| let temp_coeff=1000000*(max(ldo_out)-min(ldo_out))/85 |
| print temp_coeff |
| plot v(ldo_out) |
| set wr_singlescale |
| set wr_vecnames |
| set appendwrite |
| .endc |
| |
| |
| .control |
| alter IL 0 |
| *alter R10 1G |
| op |
| let iq =i(Vs) |
| print iq |
| *print all |
| set wr_singlescale |
| set wr_vecnames |
| set appendwrite |
| if v(ldo_out)>1 |
| wrdata op_point_test v(ldo_out) |
| end |
| .endc |
| |
| |
| |
| *Stability_Analysis |
| .control |
| alter IL 0 |
| alter Vs AC =0 |
| alter Vt AC=1 |
| ac dec 10 1 1G |
| plot vdb(out) |
| plot (180/pi)*vp(out) |
| let ph= (180/pi)*vp(out) |
| meas ac pm FIND ph WHEN vdb(out)=0 |
| .endc |
| |
| |
| *PSRR_Analysis |
| .control |
| alter IL 0 |
| alter Vs AC =1 |
| alter Vt AC=0 |
| alter L1 0 |
| alter C2 0 |
| ac dec 10 1 1G |
| meas AC PSRR100 FIND vdb(ldo_out) AT=100 |
| meas AC PSRR100k FIND vdb(ldo_out) AT=100k |
| plot vdb(ldo_out) |
| .endc |
| |
| |
| |
| |
| *supply_sweep |
| .control |
| alter IL 0 |
| dc Vs 2.8 0 -0.01 |
| plot vdd ldo_out |
| meas DC Vldo_Sup_2 FIND ldo_out AT=2 |
| meas DC Vldo_nom FIND ldo_out AT=2.3 |
| meas DC Vldo_Sup_2_8 FIND ldo_out AT=2.8 |
| let line_reg = abs((Vldo_Sup_2_8-Vldo_Sup_2)/0.8) |
| print line_reg |
| meas DC vin WHEN v(ldo_out)=1.764 |
| let dropout=vin-1.764 |
| print dropout |
| set wr_singlescale |
| set wr_vecnames |
| set appendwrite |
| .endc |
| |
| |
| |
| |
| |
| *Load_Reg_switches |
| *V1 c1 0 DC 0 PWL(0 5 20u 5 35u 0 50u 0 100u 0) |
| *V2 c2 0 DC 0 PWL(0 0 20u 0 35u 0 50u 5 100u 5) |
| *s1 ldo_out 2 c1 0 switch1 ON |
| *s2 ldo_out 3 c2 0 switch1 OFF |
| *.model switch1 sw vt=0.1 ron =0.1 roff =1G |
| *R1 2 0 18k |
| *R2 3 0 180 |
| |
| *.control |
| *alter R10 1G |
| *tran 0.1u 90u |
| *plot v(ldo_out) v(c1) v(c2) |
| *meas TRAN V_ldo_100u FIND v(ldo_out) AT=10u |
| *meas TRAN V_ldo_10m FIND v(ldo_out) AT=50u |
| *let load_reg= V_ldo_100u-V_ldo_10m |
| *print load_reg |
| *.endc |
| |
| |
| **Load_Transient |
| .control |
| alter IL 50u |
| alter R10 3600k |
| tran 0.1u 100u |
| meas TRAN V_ldo_100u FIND v(ldo_out) AT=5u |
| meas TRAN V_ldo_10m FIND v(ldo_out) AT=100u |
| let load_reg= V_ldo_100u-V_ldo_10m |
| let load_current =(-1*i(Vs)-131.8e-6) |
| print load_reg |
| plot load_current v(ldo_out)-1.8 |
| .endc |
| |
| |
| **Transient |
| .control |
| alter R10 36k |
| alter @IL[PWL] = [ 0 0 10u 0 20u 0 30u 0 ] |
| alter @Vs[pulse] = [ 1.8 3 10u 10u 1u 100u 200u ] |
| alter IL 0 |
| tran 0.1u 100u |
| plot vdd ldo_out |
| .endc |
| .control |
| alter R10 36k |
| alter @IL[PWL] = [ 0 0 10u 0 20u 0 30u 0 ] |
| alter @Vs[pulse] = [ 0 2.3 10u 0.1u 1u 100u 200u ] |
| tran 0.1u 100u |
| plot vdd ldo_out |
| .endc |
| .control |
| alter R10 36k |
| alter @IL[PWL] = [ 0 0 10u 0 20u 0 30u 0 ] |
| alter @Ven[pulse] = [ 0 2.3 10u 0.1u 1u 100u 200u ] |
| tran 0.1u 100u |
| *meas TRAN st_up_time when v(ldo_out)>1.782 |
| plot en ldo_out |
| .endc |
| |
| |
| |
| |
| |
| "} |
| C {devices/lab_pin.sym} 3410 -3750 0 0 {name=l9 sig_type=std_logic lab=en} |