Version 4
SHEET 1 2080 1748
WIRE -2800 -512 -3056 -512
WIRE -2464 -512 -2736 -512
WIRE -2608 -432 -3024 -432
WIRE -2592 -432 -2608 -432
WIRE -2496 -432 -2512 -432
WIRE -3024 -384 -3024 -432
WIRE -3008 -384 -3024 -384
WIRE -2608 -384 -2608 -432
WIRE -2608 -384 -2624 -384
WIRE -3504 -304 -3568 -304
WIRE -3392 -304 -3424 -304
WIRE -3296 -304 -3328 -304
WIRE -3008 -304 -3296 -304
WIRE -2464 -304 -2464 -512
WIRE -2464 -304 -2624 -304
WIRE -3568 -288 -3568 -304
WIRE -3296 -224 -3296 -304
WIRE -3248 -224 -3296 -224
WIRE -3008 -224 -3168 -224
WIRE -2592 -224 -2624 -224
WIRE -2464 -224 -2464 -304
WIRE -2464 -224 -2512 -224
WIRE -2432 -224 -2464 -224
WIRE -2304 -224 -2352 -224
WIRE -3568 -192 -3568 -208
WIRE -3296 -144 -3296 -224
WIRE -3152 -144 -3296 -144
WIRE -3056 -144 -3056 -512
WIRE -3056 -144 -3072 -144
WIRE -3008 -144 -3056 -144
WIRE -2304 -144 -2304 -224
WIRE -2304 -144 -2624 -144
WIRE -2288 -144 -2304 -144
WIRE -3008 -64 -3024 -64
WIRE -2608 -64 -2624 -64
WIRE -3008 16 -3024 16
WIRE -2608 16 -2624 16
WIRE -3008 96 -3024 96
WIRE -2608 96 -2624 96
WIRE -3008 176 -3024 176
WIRE -2608 176 -2624 176
WIRE -3120 224 -3136 224
WIRE -3024 224 -3024 176
WIRE -3024 224 -3040 224
WIRE -2608 224 -2608 176
WIRE -2608 224 -3024 224
FLAG -3568 -192 0
FLAG -3568 -304 IN
FLAG -2496 -432 0
FLAG -3136 224 0
FLAG -3024 16 0
FLAG -2288 -144 OUT
FLAG -2608 16 0
FLAG -2608 96 0
FLAG -3024 96 0
SYMBOL voltage -2608 -432 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 -32 56 VBottom 2
SYMATTR InstName V2
SYMATTR Value 5
SYMBOL voltage -3024 224 R90
WINDOW 0 -32 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName V3
SYMATTR Value -5
SYMBOL res -3056 -160 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value {.66G/fc}
SYMATTR SpiceLine tol=1
SYMBOL res -3152 -240 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName RA1
SYMATTR Value {1.76G/fc}
SYMATTR SpiceLine tol=1
SYMBOL LT1568 -2816 32 R0
WINDOW 0 5 -380 Center 2
WINDOW 3 8 -301 Center 2
SYMATTR InstName U1
SYMBOL cap -2736 -528 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName ZAB1
SYMATTR Value 100p
SYMBOL res -2336 -240 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R4
SYMATTR Value {1.42G/fc}
SYMATTR SpiceLine tol=1
SYMBOL res -2608 -208 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName RB1
SYMATTR Value {1.76G/fc}
SYMATTR SpiceLine tol=1
SYMBOL cap -3392 -288 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName ZA3
SYMATTR Value 100p
SYMBOL voltage -3568 -304 R0
WINDOW 123 32 92 Left 2
WINDOW 39 24 117 Left 2
SYMATTR Value2 AC 1
SYMATTR InstName V1
SYMATTR Value ""
SYMBOL res -3520 -288 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName ZA1
SYMATTR Value 75
SYMATTR SpiceLine tol=1
TEXT -2544 160 Left 2 !.ac oct 250 10K 10Meg
TEXT -2544 120 Left 2 !.param fc=100k
TEXT -2832 -568 Bottom 2 ;LT1568 - Very Low Noise, High Frequency Active RC, Filter Building Block\n4th Order, Highpass Filter\nInput Frequency <= 10MHz
TEXT -3432 280 Left 2 ;Notes: \n  Passband Gain = ZA3/100pF. Min R3 and R4 is 100ohms. See Demo Manual DC675B for details.\n  If the simulation model is not found please update with the "Sync Release" command from the "Tools" menu.\n  It remains the customer's responsibility to verify proper and reliable operation in the actual application.\n  Component substitution and printed circuit board layout may significantly affect circuit performance or reliability.\n  Contact your local sales representative for assistance. This circuit is distributed to customers only for use with LTC parts.\n  Copyright © 2015 Linear Technology Inc.  All rights reserved.