* SPICE netlist
XU1 VDD1 0 VIO1 DIN1+ DIN1- DIN2+ DIN2- 0 VDD2 0 DOUT2- DOUT2+ DOUT1- DOUT1+ 0 ADN4620 ;pnba VDD1)GND1)VIO1)DIN1+)DIN1-)DIN2+)DIN2-)_REFRESH1)VDD2)GND2)DOUT2-)DOUT2+)DOUT1-)DOUT1+)_REFRESH2
V1 VDD1 0 1.8
V2 VDD2 0 1.8
V3 VIO1 0 3.3
R1 N001 DOUT1+ 49.9
R2 N001 DOUT1- 49.9
V4 DIN2+ 0 PULSE(0 0.4 0 2p 2p 400p 800p)
V5 DIN2- 0 PULSE(0.4 0 0 2p 2p 400p 800p)
R3 N002 DOUT2+ 49.9
R4 DOUT2- N002 49.9
C1 DOUT1+ 0 5.1p
C2 0 DOUT1- 5.1p
C3 DOUT2+ 0 5.1p
C4 0 DOUT2- 5.1p
V6 DIN1+ 0 PULSE(0.1 0 0 2p 2p 100n 200n)
V7 DIN1- 0 PULSE(0 0.1 0 2p 2p 100n 200n)
.tran 4u

* LTspice schematic (.asc)
Version 4
SHEET 1 1808 672
WIRE -520 -336 -552 -336
WIRE -408 -336 -440 -336
WIRE -360 -336 -408 -336
WIRE 152 -288 120 -288
WIRE -360 -240 -408 -240
WIRE 184 -192 120 -192
WIRE 264 -192 184 -192
WIRE 392 -192 344 -192
WIRE 664 -192 600 -192
WIRE 904 -192 840 -192
WIRE 664 -176 664 -192
WIRE 904 -176 904 -192
WIRE -520 -144 -552 -144
WIRE -408 -144 -440 -144
WIRE -360 -144 -408 -144
WIRE 184 -96 120 -96
WIRE 264 -96 184 -96
WIRE 392 -96 392 -192
WIRE 392 -96 344 -96
WIRE 664 -96 664 -112
WIRE 904 -96 904 -112
WIRE -872 -48 -904 -48
WIRE -408 -48 -792 -48
WIRE -360 -48 -408 -48
WIRE 184 0 120 0
WIRE 264 0 184 0
WIRE 392 0 344 0
WIRE 664 0 600 0
WIRE 904 0 840 0
WIRE 664 16 664 0
WIRE 904 16 904 0
WIRE -872 48 -904 48
WIRE -408 48 -792 48
WIRE -360 48 -408 48
WIRE 184 96 120 96
WIRE 264 96 184 96
WIRE 392 96 392 0
WIRE 392 96 344 96
WIRE 664 96 664 80
WIRE 904 96 904 80
WIRE -872 144 -904 144
WIRE -408 144 -792 144
WIRE -360 144 -408 144
WIRE 152 192 120 192
WIRE -872 240 -904 240
WIRE -408 240 -792 240
WIRE -360 240 -408 240
WIRE 168 288 120 288
WIRE 200 288 168 288
WIRE 312 288 280 288
WIRE -360 336 -408 336
FLAG -408 -240 0
FLAG -408 -48 DIN1+
FLAG -408 48 DIN1-
FLAG -408 144 DIN2+
FLAG -408 240 DIN2-
FLAG 184 0 DOUT2+
FLAG 184 96 DOUT2-
FLAG 184 -192 DOUT1+
FLAG 184 -96 DOUT1-
FLAG -408 -144 VIO1
FLAG -408 -336 VDD1
FLAG 168 288 VDD2
FLAG 600 0 DOUT2+
FLAG 840 0 DOUT2-
FLAG 600 -192 DOUT1+
FLAG 840 -192 DOUT1-
FLAG 152 192 0
FLAG -408 336 0
FLAG -904 144 0
FLAG -904 240 0
FLAG -552 -144 0
FLAG -552 -336 0
FLAG -904 -48 0
FLAG -904 48 0
FLAG 664 96 0
FLAG 904 96 0
FLAG 904 -96 0
FLAG 664 -96 0
FLAG 152 -288 0
FLAG 312 288 0
SYMBOL ADN4620 -120 -192 R0
SYMATTR InstName U1
SYMBOL voltage -424 -336 M270
SYMATTR InstName V1
SYMATTR Value 1.8
SYMBOL voltage 184 288 M90
SYMATTR InstName V2
SYMATTR Value 1.8
SYMBOL voltage -424 -144 R90
SYMATTR InstName V3
SYMATTR Value 3.3
SYMBOL res 360 -208 R90
SYMATTR InstName R1
SYMATTR Value 49.9
SYMBOL res 360 -112 R90
SYMATTR InstName R2
SYMATTR Value 49.9
SYMBOL voltage -776 144 R90
SYMATTR InstName V4
SYMATTR Value PULSE(0 0.4 0 2p 2p 400p 800p)
SYMBOL voltage -776 240 M270
SYMATTR InstName V5
SYMATTR Value PULSE(0.4 0 0 2p 2p 400p 800p)
SYMBOL res 360 -16 R90
SYMATTR InstName R3
SYMATTR Value 49.9
SYMBOL res 248 112 R270
SYMATTR InstName R4
SYMATTR Value 49.9
SYMBOL cap 648 -176 R0
SYMATTR InstName C1
SYMATTR Value 5.1p
SYMBOL cap 888 -112 M180
SYMATTR InstName C2
SYMATTR Value 5.1p
SYMBOL cap 648 16 R0
SYMATTR InstName C3
SYMATTR Value 5.1p
SYMBOL cap 888 80 M180
SYMATTR InstName C4
SYMATTR Value 5.1p
SYMBOL voltage -776 -48 R90
SYMATTR InstName V6
SYMATTR Value PULSE(0.1 0 0 2p 2p 100n 200n)
SYMBOL voltage -776 48 M270
SYMATTR InstName V7
SYMATTR Value PULSE(0 0.1 0 2p 2p 100n 200n)