diff --git a/xschem/lownoiseamplifier/cmfb-negfb-revision.sch b/xschem/lownoiseamplifier/cmfb-negfb-revision.sch
new file mode 100644
index 0000000..86463d2
--- /dev/null
+++ b/xschem/lownoiseamplifier/cmfb-negfb-revision.sch
@@ -0,0 +1,243 @@
+v {xschem version=3.0.0 file_version=1.2 }
+G {}
+K {}
+V {}
+S {}
+E {}
+N 440 -370 680 -370 {
+lab=gnd1}
+N 560 -370 560 -340 {
+lab=gnd1}
+N 440 -340 440 -300 {
+lab=#net1}
+N 440 -300 680 -300 {
+lab=#net1}
+N 680 -340 680 -300 {
+lab=#net1}
+N 490 -230 640 -230 {
+lab=#net2}
+N 480 -230 490 -230 {
+lab=#net2}
+N 440 -260 560 -260 {
+lab=#net2}
+N 560 -260 560 -230 {
+lab=#net2}
+N 680 -300 680 -260 {
+lab=#net1}
+N 420 -230 440 -230 {
+lab=gnd2}
+N 420 -230 420 -200 {
+lab=gnd2}
+N 420 -200 440 -200 {
+lab=gnd2}
+N 680 -230 700 -230 {
+lab=gnd2}
+N 700 -230 700 -200 {
+lab=gnd2}
+N 680 -200 700 -200 {
+lab=gnd2}
+N 440 -200 440 -160 {
+lab=gnd2}
+N 440 -160 680 -160 {
+lab=gnd2}
+N 680 -200 680 -160 {
+lab=gnd2}
+N 560 -160 560 -130 {
+lab=gnd2}
+N 440 -490 440 -400 {
+lab=out1}
+N 680 -490 680 -400 {
+lab=#net3}
+N 480 -520 640 -520 {
+lab=#net4}
+N 420 -520 440 -520 {
+lab=vdd2}
+N 420 -550 420 -520 {
+lab=vdd2}
+N 420 -550 440 -550 {
+lab=vdd2}
+N 680 -520 700 -520 {
+lab=vdd2}
+N 700 -550 700 -520 {
+lab=vdd2}
+N 680 -550 700 -550 {
+lab=vdd2}
+N 440 -580 440 -550 {
+lab=vdd2}
+N 680 -580 680 -550 {
+lab=vdd2}
+N 440 -580 680 -580 {
+lab=vdd2}
+N 560 -610 560 -580 {
+lab=vdd2}
+N 560 -520 560 -440 {
+lab=#net4}
+N 440 -440 460 -440 {
+lab=out1}
+N 660 -440 680 -440 {
+lab=#net3}
+N 460 -440 470 -440 {
+lab=out1}
+N 530 -440 590 -440 {
+lab=#net4}
+N 650 -440 660 -440 {
+lab=#net3}
+N 360 -440 440 -440 {
+lab=out1}
+N 680 -440 760 -440 {
+lab=#net3}
+N 360 -470 360 -440 {
+lab=out1}
+N 760 -470 760 -440 {
+lab=#net3}
+N 340 -440 360 -440 {
+lab=out1}
+N 760 -440 780 -440 {
+lab=#net3}
+N 240 -440 280 -440 {
+lab=#net5}
+N 840 -440 880 -440 {
+lab=#net6}
+N 140 -440 180 -440 {
+lab=in1}
+N 940 -440 980 -440 {
+lab=in2}
+N 860 -440 860 -370 {
+lab=#net6}
+N 720 -370 860 -370 {
+lab=#net6}
+N 260 -440 260 -370 {
+lab=#net5}
+N 260 -370 400 -370 {
+lab=#net5}
+N 380 -260 440 -260 {
+lab=#net2}
+N 260 -260 320 -260 {
+lab=vdd1}
+C {/Volumes/WORK_DRIVE/open_pdks/sky130/sky130A/libs.tech/xschem/sky130_fd_pr/nfet_01v8.sym} 420 -370 0 0 {name=M1
+L=0.15
+W=1
+nf=1 
+mult=1
+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=nfet_01v8
+spiceprefix=X
+}
+C {/Volumes/WORK_DRIVE/open_pdks/sky130/sky130A/libs.tech/xschem/sky130_fd_pr/nfet_01v8.sym} 700 -370 0 1 {name=M2
+L=0.15
+W=1
+nf=1 
+mult=1
+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=nfet_01v8
+spiceprefix=X
+}
+C {/Volumes/WORK_DRIVE/open_pdks/sky130/sky130A/libs.tech/xschem/sky130_fd_pr/nfet_01v8.sym} 460 -230 0 1 {name=M3
+L=0.15
+W=1
+nf=1 
+mult=1
+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=nfet_01v8
+spiceprefix=X
+}
+C {/Volumes/WORK_DRIVE/open_pdks/sky130/sky130A/libs.tech/xschem/sky130_fd_pr/nfet_01v8.sym} 660 -230 0 0 {name=M4
+L=0.15
+W=1
+nf=1 
+mult=1
+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=nfet_01v8
+spiceprefix=X
+}
+C {/Volumes/WORK_DRIVE/open_pdks/sky130/sky130A/libs.tech/xschem/sky130_fd_pr/pfet_01v8.sym} 460 -520 0 1 {name=M5
+L=0.15
+W=1
+nf=1
+mult=1
+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_01v8
+spiceprefix=X
+}
+C {/Volumes/WORK_DRIVE/open_pdks/sky130/sky130A/libs.tech/xschem/sky130_fd_pr/pfet_01v8.sym} 660 -520 0 0 {name=M6
+L=0.15
+W=1
+nf=1
+mult=1
+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_01v8
+spiceprefix=X
+}
+C {/Volumes/WORK_DRIVE/open_pdks/sky130/sky130A/libs.tech/xschem/sky130_fd_pr/res_generic_po.sym} 500 -440 1 1 {name=R1
+W=1
+L=1
+model=res_generic_po
+mult=1}
+C {/Volumes/WORK_DRIVE/open_pdks/sky130/sky130A/libs.tech/xschem/sky130_fd_pr/res_generic_po.sym} 620 -440 1 1 {name=R2
+W=1
+L=1
+model=res_generic_po
+mult=1}
+C {/Volumes/WORK_DRIVE/open_pdks/sky130/sky130A/libs.tech/xschem/sky130_fd_pr/res_generic_po.sym} 310 -440 1 1 {name=R3
+W=1
+L=1
+model=res_generic_po
+mult=1}
+C {/Volumes/WORK_DRIVE/open_pdks/sky130/sky130A/libs.tech/xschem/sky130_fd_pr/res_generic_po.sym} 810 -440 1 1 {name=R4
+W=1
+L=1
+model=res_generic_po
+mult=1}
+C {/Volumes/WORK_DRIVE/open_pdks/sky130/sky130A/libs.tech/xschem/sky130_fd_pr/res_generic_po.sym} 210 -440 1 1 {name=R5
+W=1
+L=1
+model=res_generic_po
+mult=1}
+C {/Volumes/WORK_DRIVE/open_pdks/sky130/sky130A/libs.tech/xschem/sky130_fd_pr/res_generic_po.sym} 910 -440 3 0 {name=R6
+W=1
+L=1
+model=res_generic_po
+mult=1}
+C {/Volumes/WORK_DRIVE/open_pdks/sky130/sky130A/libs.tech/xschem/sky130_fd_pr/res_generic_po.sym} 350 -260 1 1 {name=R7
+W=1
+L=1
+model=res_generic_po
+mult=1}
+C {ipin.sym} 560 -340 3 0 {name=gnd1 lab=gnd1}
+C {ipin.sym} 560 -130 3 0 {name=gnd2 lab=gnd2}
+C {ipin.sym} 260 -260 0 0 {name=vdd1 lab=vdd1}
+C {ipin.sym} 560 -610 1 0 {name=vdd2 lab=vdd2}
+C {ipin.sym} 140 -440 0 0 {name=in1 lab=in1}
+C {ipin.sym} 980 -440 2 0 {name=in2 lab=in2}
+C {opin.sym} 360 -470 3 0 {name=out1 lab=out1}
+C {opin.sym} 760 -470 3 0 {name=out2 lab=out2}
diff --git a/xschem/lownoiseamplifier/cmfb-negfb-revision.sym b/xschem/lownoiseamplifier/cmfb-negfb-revision.sym
new file mode 100644
index 0000000..0e55946
--- /dev/null
+++ b/xschem/lownoiseamplifier/cmfb-negfb-revision.sym
@@ -0,0 +1,45 @@
+v {xschem version=3.0.0 file_version=1.2 }
+G {}
+K {type=subcircuit
+format="@name @pinlist @symname"
+template="name=XLNA1"}
+V {}
+S {}
+E {}
+L 4 220 -280 220 -160 {}
+L 4 220 -280 340 -220 {}
+L 4 220 -160 340 -220 {}
+L 4 180 -240 220 -240 {}
+L 4 180 -200 220 -200 {}
+L 4 300 -240 360 -240 {}
+L 4 300 -200 360 -200 {}
+L 4 260 -280 260 -260 {}
+L 4 260 -180 260 -160 {}
+L 4 250 -280 260 -280 {}
+L 4 260 -280 270 -280 {}
+L 4 270 -290 270 -280 {}
+L 4 250 -290 250 -280 {}
+L 4 250 -160 260 -160 {}
+L 4 260 -160 270 -160 {}
+L 4 270 -160 270 -150 {}
+L 4 250 -160 250 -150 {}
+L 4 260 -255 260 -245 {}
+L 4 255 -250 260 -250 {}
+L 4 260 -250 265 -250 {}
+L 4 255 -190 265 -190 {}
+B 5 247.5 -292.5 252.5 -287.5 {name=vdd1
+dir=in}
+B 5 267.5 -292.5 272.5 -287.5 {name=vdd2
+dir=in}
+B 5 177.5 -242.5 182.5 -237.5 {name=in1
+dir=in}
+B 5 177.5 -202.5 182.5 -197.5 {name=in2
+dir=in}
+B 5 357.5 -242.5 362.5 -237.5 {name=out1
+dir=out}
+B 5 357.5 -202.5 362.5 -197.5 {name=out2
+dir=out}
+B 5 247.5 -152.5 252.5 -147.5 {name=gnd1
+dir=in}
+B 5 267.5 -152.5 272.5 -147.5 {name=gnd2
+dir=in}