LTC1064

11

1064fb

TYPICAL APPLICATIO S

INPUT FREQUENCY (kHz)

0

5

0

–5

–10

–15

–20

–25

–30

–35

–40

20

40

50

10

30

fCLK = 2MHz

1064 TA06

INV B

HPB/NB

BPB

LPB

SB

AGND

V+

SA

LPA

BPA

HPA/NA

INV A

24

23

22

21

20

19

18

17

16

15

14

13

1

2

3

4

5

6

7

8

9

10

11

12

INV C

HPC/NC

BPC

LPC

SC

V–

CLK

50/100

LPD

BPD

HPD

INV D

LTC1064

R22

R32

R23

R33

R43

R13

R14

R44

R34

R24

20k

R11

VIN3

VIN4

VIN2

VIN1

5V TO 8V

fCLK

–5V TO –8V

VOUT

1064 TA05

R12

R31

R21

17.4k

20k

20k

0.1

µF

10.5k

RESISTOR VALUES:

R11 = 249k

R21 = 10k

R31 = 249k

R12 = 249k

R22 = 10k

R32 = 249k

R13 = 499k

R23 = 10k

R33 = 174k

R43 = 17.8k

R14 = 453k

R24 = 10k

R34 = 249k

R44 = 40.2k

0.1

µF

–

+

LT1056

INPUT FREQUENCY (Hz)

10k

15

0

–15

–30

–45

–60

–75

–90

–105

100k

1M

1064 TA04

VS = ±8V

fCLK = 7MHz

fCLK = 2MHz

INV B

HPB/NB

BPB

LPB

SB

AGND

V+

SA

LPA

BPA

HPA/NA

INV A

24

23

22

21

20

19

18

17

16

15

14

13

1

2

3

4

5

6

7

8

9

10

11

12

INV C

HPC/NC

BPC

LPC

SC

V–

CLK

50/100

LPD

BPD

HPD

INV D

LTC1064

R23

R33

R43

R24

R34

R44

R14

R13

R42

R32

R22

R12

R11

VIN

5V TO 8V

fCLK ≤ 7MHz

C1

C2

0.1

µF

–5V TO –8V

VOUT

1064 TA03

R41

R31

R21

0.1

µF

RESISTOR VALUES:

R11 = 16k

R21 = 16k

R31 = 7.32k

R41 = 10k

R12 = 10k

R22 = 10k

R32 = 22.6k

R42 = 13.3k

R13 = 23.2k R23 = 13.3k R33 = 21.5k

R43 = 10k

R14 = 6.8k

R24 = 20k

R34 = 15.4k

R44 = 32.4k

NOTE: FOR fCLK ≥ 3MHz, USE C1 = C2 = 22pF

Wideband Bandpass: Ratio of High to Low Corner Frequency Equal to 2

Amplitude Response

Quad Bandpass Filter with Center Frequency Equal to fO, 2fO, 3fO and 4fO

Amplitude Response