16

LTC1264

© LINEAR TECHNOLOGY CORPORATION 1993

APPLICATI

TYPICAL

8th Order Bandpass Filter, Linear Phase

Linear Technology Corporation

1264fa LT/TP 0198 4K REV A • PRINTED IN USA

1264 TA07a

1MHz

1.5MHz

2.0MHz

C

0pF

5pF

10pF

R2

INV B

HPB/NB

BPB

LPB

SB

AGND

SA

LPA

BPA

HPA/NA

INV A

INV C

HPC/NC

BPC

LPC

SC

CLK

SD

LPD

BPD

HPD/ND

INV D

R3

R2

R4

R1

LTC1264

7.5V

R4

R3

R2

R3

R4

C

1MHz

R4

R3

R2

R1

LTC1264 SIDE

MODE

R1

R2

R3

R4

B

3a

97.6k

10.7k

39.2k

13.3k

C

3

12.4k

39.2k

10.7k

53.6

15.0k

A

3a

32.4k

10.7k

12.4k

11.5k

D

3

10.0k

29.4k

10.0k

27.4k

100.0k

–7.5V

0.1

µF

0.1

µF

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PART NUMBER

DESCRIPTION

COMMENTS

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Very Low Noise, High Accuracy, Quad Universal Filter

Four 2nd Order Filter Sections in 28-Pin SSOP, 56kHz Max Center

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Frequency, SSOP

50kHz Bandpass Filter, Linear Phase

Gain vs Frequency

FREQUENCY (kHz)

40

3

0

–3

–6

–9

–12

–15

–18

–21

–24

–27

56

1264 TA07c

44

48

52

60

42

46

50

54

58

124

114

104

94

84

74

64

54

44

34

24

GAIN

DELAY

FREQUENCY (Hz)

10k

10

0

–10

–20

–30

–40

–50

–60

–70

–80

–90

100k

1M

1264 TA07b

Passband Gain and Group Delay