This is a rough working model of the very cool AD8130 diffamp. Seems to mostly work.
Version 4 SHEET 1 1140 772 WIRE -272 64 -512 64 WIRE -224 64 -272 64 WIRE -80 64 -144 64 WIRE -16 64 -80 64 WIRE 80 64 -16 64 WIRE 256 64 128 64 WIRE 368 64 256 64 WIRE 464 64 368 64 WIRE 576 64 464 64 WIRE 128 80 128 64 WIRE -512 96 -512 64 WIRE -80 96 -80 64 WIRE -16 96 -16 64 WIRE 80 96 80 64 WIRE 368 96 368 64 WIRE 464 96 464 64 WIRE 576 96 576 64 WIRE -272 192 -368 192 WIRE -224 192 -272 192 WIRE -80 192 -80 160 WIRE -80 192 -144 192 WIRE -16 192 -16 160 WIRE -16 192 -80 192 WIRE 80 192 80 144 WIRE 80 192 -16 192 WIRE 128 192 128 160 WIRE 368 208 368 160 WIRE 464 208 464 160 WIRE 464 208 368 208 WIRE 576 208 576 176 WIRE 576 208 464 208 WIRE -512 224 -512 176 WIRE -368 224 -368 192 WIRE 368 224 368 208 WIRE 752 224 656 224 WIRE 880 224 832 224 WIRE 944 224 880 224 WIRE 992 224 944 224 WIRE 656 304 656 224 WIRE 256 320 256 64 WIRE 256 320 128 320 WIRE 608 320 256 320 WIRE -272 336 -512 336 WIRE -224 336 -272 336 WIRE -80 336 -144 336 WIRE -16 336 -80 336 WIRE 80 336 -16 336 WIRE 128 352 128 320 WIRE 880 352 880 224 WIRE -512 368 -512 336 WIRE -80 368 -80 336 WIRE -16 368 -16 336 WIRE 80 368 80 336 WIRE 256 368 256 320 WIRE 608 368 592 368 WIRE 592 416 592 368 WIRE 656 416 656 384 WIRE -272 464 -320 464 WIRE -224 464 -272 464 WIRE -80 464 -80 432 WIRE -80 464 -144 464 WIRE -16 464 -16 432 WIRE -16 464 -80 464 WIRE 80 464 80 416 WIRE 80 464 -16 464 WIRE 128 464 128 432 WIRE 256 464 256 432 WIRE -512 496 -512 448 WIRE -320 592 -320 464 WIRE 880 592 880 432 WIRE 880 592 -320 592 WIRE 880 624 880 592 WIRE 880 752 880 704 FLAG 128 192 0 FLAG 128 464 0 FLAG 256 464 0 FLAG 592 416 0 FLAG 656 416 0 FLAG 368 224 0 FLAG -272 64 IN+ FLAG -272 192 IN- FLAG 944 224 OUT FLAG -272 336 REF FLAG -272 464 FB FLAG -512 224 0 FLAG -368 224 0 FLAG -512 496 0 FLAG 880 752 0 SYMBOL g 128 64 R0 WINDOW 0 47 47 Left 2 WINDOW 3 55 86 Left 2 SYMATTR InstName G1 SYMATTR Value 1 SYMBOL g 128 336 R0 WINDOW 0 49 37 Left 2 WINDOW 3 55 74 Left 2 SYMATTR InstName G2 SYMATTR Value 1 SYMBOL cap 240 368 R0 WINDOW 0 70 7 Left 2 WINDOW 3 62 46 Left 2 SYMATTR InstName C1 SYMATTR Value 550p SYMBOL e 656 288 R0 WINDOW 0 57 40 Left 2 WINDOW 3 65 75 Left 2 SYMATTR InstName E1 SYMATTR Value 1 SYMBOL res 848 208 R90 WINDOW 0 68 54 VBottom 2 WINDOW 3 74 55 VTop 2 SYMATTR InstName R1 SYMATTR Value 20 SYMBOL res -128 48 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R2 SYMATTR Value 1K SYMBOL res -128 176 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R3 SYMATTR Value 1K SYMBOL diode -32 96 R0 WINDOW 0 50 23 Left 2 WINDOW 3 50 55 Left 2 SYMATTR InstName D1 SYMATTR Value Dk SYMBOL diode -64 160 R180 WINDOW 0 42 42 Left 2 WINDOW 3 42 12 Left 2 SYMATTR InstName D2 SYMATTR Value Dk SYMBOL diode 352 96 R0 WINDOW 0 -42 23 Left 2 WINDOW 3 -40 57 Left 2 SYMATTR InstName D3 SYMATTR Value Dj SYMBOL diode 480 160 R180 WINDOW 0 -46 37 Left 2 WINDOW 3 -44 6 Left 2 SYMATTR InstName D4 SYMATTR Value Dj SYMBOL res -128 320 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R4 SYMATTR Value 1K SYMBOL res -128 448 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R5 SYMATTR Value 1K SYMBOL diode -32 368 R0 WINDOW 0 51 18 Left 2 WINDOW 3 51 50 Left 2 SYMATTR InstName D5 SYMATTR Value Dk SYMBOL diode -64 432 R180 WINDOW 0 43 46 Left 2 WINDOW 3 44 10 Left 2 SYMATTR InstName D6 SYMATTR Value Dk SYMBOL res 560 80 R0 WINDOW 0 58 40 Left 2 WINDOW 3 48 72 Left 2 SYMATTR InstName R6 SYMATTR Value 400K SYMBOL voltage -512 80 R0 WINDOW 0 58 16 Left 2 WINDOW 3 42 49 Left 2 WINDOW 123 52 88 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V1 SYMATTR Value SINE(0 1 1Meg) SYMATTR Value2 AC 1 SYMBOL voltage -512 352 R0 WINDOW 0 55 44 Left 2 WINDOW 3 63 83 Left 2 WINDOW 123 52 88 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V2 SYMATTR Value 0 SYMBOL res 864 608 R0 WINDOW 0 66 40 Left 2 WINDOW 3 61 75 Left 2 SYMATTR InstName R7 SYMATTR Value 100 SYMBOL res 864 336 R0 WINDOW 0 50 39 Left 2 WINDOW 3 50 72 Left 2 SYMATTR InstName R8 SYMATTR Value 174 TEXT -352 640 Left 2 !.model Dk D(Vfwd=2.3) TEXT -352 688 Left 2 !.model Dj D(Vfwd=3.6) TEXT 384 640 Left 2 ;Gol = 400K TEXT 384 688 Left 2 ;BW = 290 MHz TEXT 344 504 Left 2 ;Rough AD8130 Model TEXT 384 552 Left 2 ;JL Jan 5, 2017 TEXT -8 640 Left 2 !.tran 5u TEXT 592 640 Left 2 ;Gcl = 2.74 TEXT -8 688 Left 2 !;ac dec 50 10Meg 500Meg TEXT 592 688 Left 2 ;+-5 supplies