* SPICE netlist
XU1 0 N001 V+ V- Vout3 ADTL082 ;pnba In+)In-)V+)V-)OUT
Rg N001 in 2.5k
V1 in 0 SINE(0 4.23 4k) AC 1
XU2 S1 N004 N001 VSS 0 Vdd ADGS1612 ;pnba IN)D)S)Vss)GND)Vdd
XU3 S2 N003 N001 VSS 0 Vdd ADGS1612 ;pnba IN)D)S)Vss)GND)Vdd
XU4 S3 N002 N001 VSS 0 Vdd ADGS1612 ;pnba IN)D)S)Vss)GND)Vdd
RF3 N003 N002 3.5k
RF1 Vout3 N004 1.75k
RF2 N004 N003 1.75k
XU5 S4 P001 N001 VSS 0 Vdd ADGS1612 ;pnba IN)D)S)Vss)GND)Vdd
RF4 N002 P001 7k
V2 V- 0 -15
V3 V+ 0 15
VSS VSS 0 -5
VS1 S1 0 0
VS2 S2 0 0
VS3 S3 0 0
VS4 S4 0 5
Vdd Vdd 0 5
.ac dec 100 0.1 10Meg

* LTspice schematic (.asc)
Version 4
SHEET 1 1520 1600
WIRE -152 -736 -200 -736
WIRE -152 -672 -168 -672
WIRE -104 -544 -104 -560
WIRE -8 -544 -8 -560
WIRE -200 -416 -200 -736
WIRE -152 -416 -200 -416
WIRE 120 -416 120 -736
WIRE 120 -416 40 -416
WIRE 152 -416 120 -416
WIRE 264 -416 232 -416
WIRE -152 -352 -168 -352
WIRE -8 -224 -8 -240
WIRE -104 -208 -104 -240
WIRE -200 -32 -200 -416
WIRE -152 -32 -200 -32
WIRE 264 -32 264 -416
WIRE 264 -32 40 -32
WIRE 280 -32 264 -32
WIRE -152 32 -168 32
WIRE -8 160 -8 144
WIRE -104 176 -104 144
WIRE -200 336 -200 -32
WIRE -152 336 -200 336
WIRE 360 336 360 -32
WIRE 360 336 40 336
WIRE 392 336 360 336
WIRE 504 336 472 336
WIRE -152 400 -168 400
WIRE -104 528 -104 512
WIRE -8 544 -8 512
WIRE -344 640 -456 640
WIRE -200 640 -200 336
WIRE -200 640 -264 640
WIRE -136 640 -200 640
WIRE 504 656 504 336
WIRE 504 656 -72 656
WIRE 760 656 504 656
WIRE -456 672 -456 640
WIRE -136 672 -200 672
WIRE -456 720 -456 672
WIRE -200 720 -200 672
FLAG -200 720 0
FLAG -456 800 0
FLAG -8 544 0
FLAG 760 656 Vout3
FLAG -168 32 S2
FLAG -168 -352 S3
FLAG -168 -672 S4
FLAG -168 400 S1
FLAG -648 288 0
FLAG -520 288 0
FLAG -648 208 V-
FLAG -520 208 V+
FLAG -104 688 V-
FLAG -104 624 V+
FLAG -376 288 0
FLAG -376 208 VSS
FLAG -8 -544 0
FLAG -8 -224 0
FLAG -8 160 0
FLAG -104 528 VSS
FLAG -104 176 VSS
FLAG -104 -208 VSS
FLAG -104 -544 VSS
FLAG -744 -176 0
FLAG -760 80 0
FLAG -584 -176 0
FLAG -392 -160 0
FLAG -744 -256 S1
FLAG -584 -256 S2
FLAG -392 -240 S3
FLAG -760 0 S4
FLAG -376 480 0
FLAG -376 400 Vdd
FLAG -56 -96 Vdd
FLAG -56 272 Vdd
FLAG -56 -480 Vdd
FLAG -56 -800 Vdd
FLAG -456 672 in
SYMBOL OpAmps\\ADTL082 -104 592 R0
SYMATTR InstName U1
SYMBOL res -248 624 R90
SYMATTR InstName Rg
SYMATTR Value 2.5k
SYMBOL voltage -456 704 R0
SYMATTR Value2 AC 1
SYMATTR InstName V1
SYMATTR Value SINE(0 4.23 4k)
SYMBOL Switches\\ADGS1612 -56 384 R0
SYMATTR InstName U2
SYMBOL Switches\\ADGS1612 -56 16 R0
SYMATTR InstName U3
SYMBOL Switches\\ADGS1612 -56 -368 R0
SYMATTR InstName U4
SYMBOL res 248 -432 R90
SYMATTR InstName RF3
SYMATTR Value 3.5k
SYMBOL res 488 320 R90
SYMATTR InstName RF1
SYMATTR Value 1.75k
SYMBOL res 376 -48 R90
SYMATTR InstName RF2
SYMATTR Value 1.75k
SYMBOL Switches\\ADGS1612 -56 -688 R0
SYMATTR InstName U5
SYMBOL res 136 -752 R90
SYMATTR InstName RF4
SYMATTR Value 7k
SYMBOL voltage -648 192 R0
SYMATTR InstName V2
SYMATTR Value -15
SYMBOL voltage -520 192 R0
SYMATTR InstName V3
SYMATTR Value 15
SYMBOL voltage -376 192 R0
SYMATTR InstName VSS
SYMATTR Value -5
SYMBOL voltage -744 -272 R0
SYMATTR InstName S1
SYMATTR Value 0
SYMBOL voltage -584 -272 R0
SYMATTR InstName S2
SYMATTR Value 0
SYMBOL voltage -392 -256 R0
SYMATTR InstName S3
SYMATTR Value 0
SYMBOL voltage -760 -16 R0
SYMATTR InstName S4
SYMATTR Value 5
SYMBOL voltage -376 384 R0
SYMATTR InstName Vdd
SYMATTR Value 5