* SPICE netlist
XU1 V_REF N004 VCC 0 V_E_FIL level2 Avol=1Meg GBW=10Meg Slew=10Meg Ilimit=25m Rail=0 Vos=0 En=0 Enk=0 In=0 Ink=0 Rin=500Meg ;pnba In+)In-)V+)V-)OUT
XU2 NC_01 N001 VCC 0 G_CTRL level2 Avol=1Meg GBW=10Meg Slew=10Meg Ilimit=25m Rail=0 Vos=0 En=0 Enk=0 In=0 Ink=0 Rin=500Meg ;pnba In+)In-)V+)V-)OUT
XU3 N005 N002 VCC 0 N001 level2 Avol=1Meg GBW=10Meg Slew=10Meg Ilimit=25m Rail=0 Vos=0 En=0 Enk=0 In=0 Ink=0 Rin=500Meg ;pnba In+)In-)V+)V-)OUT
XU4 N008 N005 VCC 0 N003 level2 Avol=1Meg GBW=10Meg Slew=10Meg Ilimit=25m Rail=0 Vos=0 En=0 Enk=0 In=0 Ink=0 Rin=500Meg ;pnba In+)In-)V+)V-)OUT
R1 VOUT N004 {R_DIV1}
R2 N004 0 {R_DIV2}
R3 VOUT N006 {R_ZI}
C1 N006 N004 {C_ZI}
R4 N004 N007 {R_ZF}
C2 N007 V_E_FIL {C_ZF1}
C3 N004 V_E_FIL {C_ZF2}
R5 V_REF VIN {R_REF1}
R6 0 V_REF {R_REF2}
R7 N001 N008 {R_1OS}
R8 N008 N003 {R_FOS}
R9 N002 N003 {R_OSC}
C4 N001 N002 {C_OSC}
R10 VCC N005 {R_DIVREF1}
R11 N005 0 {R_DIVREF2}
V1 VCC 0 5
V3 IN 0 0 AC 1 0
L1 IN VOUT {L}
C5 VOUT 0 {C_OUT}
C6 VOUT 0 {C_OUT}
C7 VOUT 0 {C_OUT}
V2 VIN 0 AC 1 -180
XU5 V_REF N009 VCC 0 V_E level2 Avol=1Meg GBW=10Meg Slew=10Meg Ilimit=25m Rail=0 Vos=0 En=0 Enk=0 In=0 Ink=0 Rin=500Meg ;pnba In+)In-)V+)V-)OUT
R12 VIN N009 {R_DIV1}
R14 N009 0 {R_DIV2}
R15 VIN N010 {R_ZI}
C8 N010 N009 {C_ZI}
R16 N009 N011 {R_ZF}
C9 N011 V_E {C_ZF1}
C10 N009 V_E {C_ZF2}
R17 V_REF VIN {R_REF1}
R18 0 V_REF {R_REF2}
.inc close-loop.txt
.ac dec 10000 20 2Meg

* LTspice schematic (.asc)
Version 4
SHEET 1 1728 1264
WIRE 400 -632 368 -632
WIRE 512 -632 480 -632
WIRE 608 -632 512 -632
WIRE 704 -632 608 -632
WIRE 864 -632 704 -632
WIRE 512 -600 512 -632
WIRE 608 -600 608 -632
WIRE 704 -600 704 -632
WIRE 512 -488 512 -536
WIRE 608 -488 608 -536
WIRE 608 -488 512 -488
WIRE 704 -488 704 -536
WIRE 704 -488 608 -488
WIRE 704 -456 704 -488
WIRE -208 -264 -240 -264
WIRE 32 -264 -144 -264
WIRE 64 -264 32 -264
WIRE 176 -264 144 -264
WIRE 832 -216 704 -216
WIRE 864 -216 832 -216
WIRE 704 -200 704 -216
WIRE 496 -184 416 -184
WIRE 640 -184 560 -184
WIRE 32 -168 32 -264
WIRE 32 -168 0 -168
WIRE -240 -152 -240 -264
WIRE -240 -152 -768 -152
WIRE -64 -152 -240 -152
WIRE -832 -136 -864 -136
WIRE 32 -136 0 -136
WIRE 832 -120 832 -216
WIRE -32 -104 -32 -120
WIRE 704 -104 704 -120
WIRE 416 -88 416 -184
WIRE 448 -88 416 -88
WIRE 528 -88 512 -88
WIRE 640 -88 640 -184
WIRE 640 -88 608 -88
WIRE 32 -72 32 -136
WIRE 32 -72 -96 -72
WIRE 144 -72 144 -88
WIRE 144 -72 32 -72
WIRE 144 -56 144 -72
WIRE 704 -24 704 -40
WIRE 832 -24 832 -40
WIRE 832 -24 704 -24
WIRE -688 -8 -688 -24
WIRE -480 -8 -480 -24
WIRE 640 8 640 -88
WIRE 640 8 544 8
WIRE 832 8 832 -24
WIRE 832 8 640 8
WIRE 416 24 416 -88
WIRE 416 24 384 24
WIRE 480 24 416 24
WIRE 576 40 544 40
WIRE -96 56 -96 -72
WIRE -64 56 -96 56
WIRE 832 56 832 8
WIRE 176 72 176 -264
WIRE 176 72 0 72
WIRE 512 72 512 56
WIRE -688 88 -688 72
WIRE -480 88 -480 72
WIRE -384 88 -384 72
WIRE -64 88 -96 88
WIRE 576 88 576 40
WIRE -32 120 -32 104
WIRE 464 136 384 136
WIRE 576 136 576 88
WIRE 576 136 544 136
WIRE 608 136 576 136
WIRE 720 136 688 136
WIRE 720 168 720 136
WIRE 832 168 832 136
WIRE -240 184 -240 -152
WIRE -208 184 -240 184
WIRE -96 184 -96 88
WIRE -96 184 -128 184
WIRE 64 184 -96 184
WIRE 176 184 176 72
WIRE 176 184 144 184
WIRE 832 248 704 248
WIRE 864 248 832 248
WIRE 704 264 704 248
WIRE 496 280 416 280
WIRE 640 280 560 280
WIRE 832 344 832 248
WIRE 704 360 704 344
WIRE 416 376 416 280
WIRE 448 376 416 376
WIRE 528 376 512 376
WIRE 640 376 640 280
WIRE 640 376 608 376
WIRE 704 440 704 424
WIRE 832 440 832 424
WIRE 832 440 704 440
WIRE 640 472 640 376
WIRE 640 472 544 472
WIRE 832 472 832 440
WIRE 832 472 640 472
WIRE 416 488 416 376
WIRE 416 488 384 488
WIRE 480 488 416 488
WIRE 576 504 544 504
WIRE 832 520 832 472
WIRE 512 536 512 520
WIRE 576 552 576 504
WIRE 464 600 384 600
WIRE 576 600 576 552
WIRE 576 600 544 600
WIRE 608 600 576 600
WIRE 720 600 688 600
WIRE 720 632 720 600
WIRE 832 632 832 600
FLAG 832 168 0
FLAG 384 24 V_E_FIL
FLAG 864 -216 VOUT
IOPIN 880 -80 In
FLAG 512 72 0
FLAG -32 -184 VCC
FLAG -32 40 VCC
FLAG 144 -168 VCC
FLAG 144 24 0
FLAG -32 -104 0
FLAG -32 120 0
FLAG -864 -136 G_CTRL
FLAG -800 -168 VCC
FLAG -800 -104 0
FLAG 512 -8 VCC
FLAG 720 168 0
FLAG 384 136 VIN
IOPIN 400 272 In
FLAG 576 88 V_REF
FLAG -480 -24 VCC
FLAG -480 88 0
FLAG -384 88 0
FLAG -384 -8 IN
IOPIN -368 128 In
FLAG 368 -632 IN
IOPIN 384 -496 In
FLAG 864 -632 VOUT
IOPIN 880 -496 In
FLAG 704 -456 0
FLAG -688 -24 VIN
IOPIN -672 112 In
FLAG -688 88 0
FLAG 832 632 0
FLAG 384 488 V_E
FLAG 512 536 0
FLAG 512 456 VCC
FLAG 720 632 0
FLAG 384 600 VIN
IOPIN 400 736 In
FLAG 576 552 V_REF
FLAG 864 248 VIN
IOPIN 880 384 In
SYMBOL OpAmps\\UniversalOpAmp2 512 24 M0
SYMATTR InstName U1
SYMBOL OpAmps\\UniversalOpAmp2 -800 -136 M0
SYMATTR InstName U2
SYMBOL OpAmps\\UniversalOpAmp2 -32 -152 M0
SYMATTR InstName U3
SYMBOL OpAmps\\UniversalOpAmp2 -32 72 R0
SYMATTR InstName U4
SYMBOL res 816 -136 R0
SYMATTR Value {R_DIV1}
SYMATTR InstName R1
SYMBOL res 816 40 R0
SYMATTR Value {R_DIV2}
SYMATTR InstName R2
SYMBOL res 688 -216 R0
SYMATTR Value {R_ZI}
SYMATTR InstName R3
SYMBOL cap 688 -104 R0
SYMATTR Value {C_ZI}
SYMATTR InstName C1
SYMBOL res 624 -104 R90
SYMATTR InstName R4
SYMATTR Value {R_ZF}
SYMBOL cap 512 -104 R90
SYMATTR InstName C2
SYMATTR Value {C_ZF1}
SYMBOL cap 560 -200 R90
SYMATTR InstName C3
SYMATTR Value {C_ZF2}
SYMBOL res 560 120 R90
SYMATTR InstName R5
SYMATTR Value {R_REF1}
SYMBOL res 704 120 R90
SYMATTR InstName R6
SYMATTR Value {R_REF2}
SYMBOL res -224 168 M90
SYMATTR InstName R7
SYMATTR Value {R_1OS}
SYMBOL res 48 168 M90
SYMATTR InstName R8
SYMATTR Value {R_FOS}
SYMBOL res 48 -280 M90
SYMATTR InstName R9
SYMATTR Value {R_OSC}
SYMBOL cap -208 -280 M90
SYMATTR InstName C4
SYMATTR Value {C_OSC}
SYMBOL res 160 -184 M0
SYMATTR Value {R_DIVREF1}
SYMATTR InstName R10
SYMBOL res 160 -72 M0
SYMATTR Value {R_DIVREF2}
SYMATTR InstName R11
SYMBOL voltage -480 -24 R0
SYMATTR InstName V1
SYMATTR Value 5
SYMBOL voltage -384 -24 R0
SYMATTR InstName V3
SYMATTR Value 0
SYMATTR Value2 AC 1 0
SYMBOL ind 384 -616 R270
SYMATTR InstName L1
SYMATTR Value {L}
SYMBOL cap 496 -600 R0
SYMATTR Value {C_OUT}
SYMATTR InstName C5
SYMBOL cap 592 -600 R0
SYMATTR Value {C_OUT}
SYMATTR InstName C6
SYMBOL cap 688 -600 R0
SYMATTR Value {C_OUT}
SYMATTR InstName C7
SYMBOL voltage -688 -24 R0
SYMATTR InstName V2
SYMATTR Value ""
SYMATTR Value2 AC 1 -180
SYMBOL OpAmps\\UniversalOpAmp2 512 488 M0
SYMATTR InstName U5
SYMBOL res 816 328 R0
SYMATTR Value {R_DIV1}
SYMATTR InstName R12
SYMBOL res 816 504 R0
SYMATTR Value {R_DIV2}
SYMATTR InstName R14
SYMBOL res 688 248 R0
SYMATTR Value {R_ZI}
SYMATTR InstName R15
SYMBOL cap 688 360 R0
SYMATTR Value {C_ZI}
SYMATTR InstName C8
SYMBOL res 624 360 R90
SYMATTR InstName R16
SYMATTR Value {R_ZF}
SYMBOL cap 512 360 R90
SYMATTR InstName C9
SYMATTR Value {C_ZF1}
SYMBOL cap 560 264 R90
SYMATTR InstName C10
SYMATTR Value {C_ZF2}
SYMBOL res 560 584 R90
SYMATTR InstName R17
SYMATTR Value {R_REF1}
SYMBOL res 704 584 R90
SYMATTR InstName R18
SYMATTR Value {R_REF2}