Version 4
SHEET 1 1428 680
WIRE 544 64 80 64
WIRE 768 64 704 64
WIRE 832 64 768 64
WIRE 1056 64 992 64
WIRE 1072 64 1056 64
WIRE 80 112 80 64
WIRE 544 112 496 112
WIRE 832 112 784 112
WIRE 496 208 496 112
WIRE 784 208 784 112
WIRE 784 208 496 208
WIRE 80 224 80 192
WIRE 496 240 496 208
WIRE 496 336 496 320
WIRE 304 464 192 464
WIRE 384 464 304 464
WIRE 496 464 464 464
WIRE 544 464 496 464
WIRE 672 464 624 464
WIRE 816 464 672 464
WIRE 816 496 816 464
WIRE 192 512 192 464
WIRE 496 512 496 464
WIRE 672 512 672 464
WIRE 496 608 496 576
WIRE 672 608 672 576
WIRE 816 608 816 576
WIRE 192 624 192 592
FLAG 80 224 0
FLAG 496 336 0
FLAG 192 624 0
FLAG 768 64 Q1
FLAG 1056 64 Q2
FLAG 304 464 s
FLAG 80 64 r
FLAG 496 608 0
FLAG 672 608 0
FLAG 816 608 0
FLAG 816 464 tx_data
SYMBOL bv 80 96 R0
SYMATTR InstName B1
SYMATTR Value V=rand(time*F0)
SYMBOL Digital\\dflop 624 16 R0
WINDOW 39 -82 161 Left 2
SYMATTR InstName A1
SYMATTR SpiceLine td=1n Trise=2n
SYMBOL Digital\\dflop 912 16 R0
WINDOW 39 -94 164 Left 2
SYMATTR InstName A2
SYMATTR SpiceLine td=1n Trise=2n
SYMBOL voltage 496 224 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value PULSE(0 1 1n 10p 10p {0.5/F0} {1/F0})
SYMBOL bv 192 496 R0
SYMATTR InstName B2
SYMATTR Value V=V(Q1)+V(Q2)-1
SYMBOL cap 480 512 R0
SYMATTR InstName C1
SYMATTR Value {C1}
SYMBOL cap 656 512 R0
SYMATTR InstName C2
SYMATTR Value {C2}
SYMBOL ind 528 480 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L1
SYMATTR Value {L1}
SYMBOL res 800 480 R0
SYMATTR InstName Rout1
SYMATTR Value {R0}
SYMBOL res 480 448 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value {R0}
TEXT 80 -128 Left 2 !.tran 0 2u 0 10p
TEXT 80 -192 Left 2 !.options baudrate={F0}
TEXT 80 -104 Left 2 !.options plotwinsize=0
TEXT 536 -192 Left 2 !* Bessel Filter\n.param FC=50e6 R0=50\n.param L1=7.710976/FC*R0/50\n.param C1=7.002677e-3/FC*50/R0\n.param C2=1.072362e-3/FC*50/R0
TEXT 80 -248 Left 2 !.param F0=125Meg