* SPICE netlist
M1 vout1 vin1 N001 0 NMOS l=0.36u w=10u m=2
C1 vout1 0 0.3p
M2 vout1 vb vdd vdd PMOS l=0.36u w=10u m=4
M3 vout2 vin2 N001 0 NMOS l=0.36u w=10u m=2
C2 vout2 0 0.3p
M4 vout2 vb vdd vdd PMOS l=0.36u w=10u m=4
vgs1 N002 0 1.15
vin1 vin1 N002 SINE(0 50m 100meg) AC 1
vin2 N002 vin2 SINE(0 50m 100meg) AC 1
vdd1 vdd 0 1.8
V1 vb 0 1.11
M6 N003 N003 0 0 NMOS l=0.36u w=10u
M7 N003 N003 vdd vdd PMOS l=0.36u w=2u
M5 N001 N003 0 0 NMOS l=0.36u w=10u m=5
.include tsmc180.txt
.op
.tran 100n
;.ac dec 10 10k 3Gig
;.tf V(vout1,vout2) (vin1,vin2)

* LTspice schematic (.asc)
Version 4
SHEET 1 1360 1008
WIRE -568 -424 -568 -488
WIRE -456 -424 -456 -504
WIRE 56 -328 -40 -328
WIRE 216 -328 216 -344
WIRE 216 -328 56 -328
WIRE 376 -328 216 -328
WIRE 472 -328 376 -328
WIRE 56 -312 56 -328
WIRE 376 -312 376 -328
WIRE 152 -296 104 -296
WIRE 328 -296 280 -296
WIRE -648 -280 -648 -488
WIRE -568 -280 -568 -344
WIRE -456 -280 -456 -344
WIRE -40 -264 -40 -328
WIRE 56 -264 -40 -264
WIRE 472 -264 472 -328
WIRE 472 -264 376 -264
WIRE -200 -136 -248 -136
WIRE 56 -136 56 -216
WIRE 56 -136 -200 -136
WIRE 376 -136 376 -216
WIRE 632 -136 376 -136
WIRE 680 -136 632 -136
WIRE 56 -120 56 -136
WIRE 376 -120 376 -136
WIRE -200 -72 -200 -136
WIRE 56 -72 -56 -72
WIRE 488 -72 376 -72
WIRE 632 -72 632 -136
WIRE -680 -56 -680 -120
WIRE -472 -56 -472 -120
WIRE -200 -56 -200 -72
WIRE 632 -56 632 -72
WIRE -200 -8 -200 -24
WIRE 632 -8 632 -24
WIRE -200 40 -200 -8
WIRE 632 40 632 -8
WIRE 56 56 56 -24
WIRE 184 56 56 56
WIRE 376 56 376 -24
WIRE 376 56 184 56
WIRE -680 88 -680 24
WIRE -584 88 -680 88
WIRE -472 88 -472 24
WIRE -472 88 -584 88
WIRE -584 120 -584 88
WIRE -40 200 -40 168
WIRE -8 200 -40 200
WIRE -88 216 -120 216
WIRE -8 248 -8 200
WIRE -8 248 -40 248
WIRE -584 264 -584 200
WIRE -120 312 -120 216
WIRE -40 312 -40 296
WIRE -40 312 -120 312
WIRE -40 344 -40 312
WIRE 40 344 -40 344
WIRE -40 360 -40 344
WIRE 184 360 184 56
WIRE -40 408 -88 408
WIRE 248 408 184 408
WIRE 40 440 40 344
WIRE 40 440 8 440
WIRE 136 440 40 440
WIRE -88 456 -88 408
WIRE -40 456 -88 456
WIRE 184 488 184 456
WIRE 248 488 248 408
WIRE 248 488 184 488
WIRE -40 504 -40 456
WIRE 184 504 184 488
FLAG -56 -72 vss
FLAG 328 -40 vin2
IOPIN 848 544 In
FLAG -248 -136 vout1
IOPIN 272 448 Out
FLAG -200 40 0
FLAG 216 -344 vdd
FLAG 152 -296 vb
FLAG 488 -72 vss
FLAG 104 -40 vin1
IOPIN 624 544 In
FLAG 680 -136 vout2
IOPIN 1200 448 Out
FLAG 632 40 0
FLAG 280 -296 vb
FLAG -584 264 0
FLAG -568 -280 0
FLAG -648 -280 0
FLAG -648 -488 vss
FLAG -568 -488 vdd
FLAG -456 -280 0
FLAG -456 -504 vb
FLAG -680 -120 vin1
IOPIN -160 464 In
FLAG -472 -120 vin2
IOPIN 48 464 In
FLAG 184 504 0
FLAG -40 504 0
FLAG -40 168 vdd
DATAFLAG 704 672 ""
DATAFLAG 704 672 ""
DATAFLAG 320 448 ""
DATAFLAG 1152 448 ""
DATAFLAG 480 928 ""
DATAFLAG 480 928 ""
SYMBOL nmos4 104 -120 M0
SYMATTR Value2 l=0.36u w=10u m=2
SYMATTR InstName M1
SYMBOL cap -216 -72 R0
SYMATTR InstName C1
SYMATTR Value 0.3p
SYMBOL pmos4 104 -216 R180
SYMATTR Value2 l=0.36u w=10u m=4
SYMATTR InstName M2
SYMBOL nmos4 328 -120 R0
SYMATTR Value2 l=0.36u w=10u m=2
SYMATTR InstName M3
SYMBOL cap 648 -72 M0
SYMATTR InstName C2
SYMATTR Value 0.3p
SYMBOL pmos4 328 -216 M180
SYMATTR Value2 l=0.36u w=10u m=4
SYMATTR InstName M4
SYMBOL voltage -584 104 R0
SYMATTR InstName vgs1
SYMATTR Value 1.15
SYMBOL voltage -680 -72 R0
SYMATTR Value SINE(0 50m 100meg)
SYMATTR Value2 AC 1
SYMATTR InstName vin1
SYMBOL voltage -472 40 R180
SYMATTR InstName vin2
SYMATTR Value SINE(0 50m 100meg)
SYMATTR Value2 AC 1
SYMBOL voltage -568 -440 R0
SYMATTR InstName vdd1
SYMATTR Value 1.8
SYMBOL voltage -456 -440 R0
SYMATTR InstName V1
SYMATTR Value 1.11
SYMBOL nmos4 8 360 M0
SYMATTR Value2 l=0.36u w=10u
SYMATTR InstName M6
SYMBOL pmos4 -88 296 M180
SYMATTR Value2 l=0.36u w=2u
SYMATTR InstName M7
SYMBOL nmos4 136 360 R0
SYMATTR Value2 l=0.36u w=10u m=5
SYMATTR InstName M5