LTC1068-50CG データシートの表示（PDF） - Linear Technology

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LTC1068-50CG

Clock-Tunable, Quad Second Order, Filter Building Blocks

Linear Technology 

LTC1068 Series

TYPICAL APPLICATIONS

LTC1068 8th Order Linear Phase Bandpass, fCENTER = fCLK/100,

Passband –3dB at (0.7)(fCENTER) and (1.3)(fCENTER), Superior Sinewave

Burst Response, Maximum fCENTER = 60kHz with ±5V Supplies

RL1

348k

RH1

11k

RL2

10k

RH2

200k

R11

11k

VIN

R21

14.7k

R31

10k

R41

14.3k

5V

0.1µF

1

INV B

2 HPB/NB

INV C

HPC/NC

3 BPB

BPC

4 LPB

LPC

5 SB

SC

6 AGND

V–

7 V+ LTC1068

fCLK

8 SA

SD

24

23

22

21

20

19

18 1MHz

17

R22

18.2k

R32

10k

R42

18.7k

–5V

0.1µF

R43

21.5k

R33

11.3k

R23

21k

9 LPA

LPD 16

10 BPA

BPD 15

11 HPA/NA

12 INV A

HPD/ND 14

INV D 13

R44

10k

R34

17.8k

R24

15.4k

RH3

95.3k

VOUT

RL3

12.4k

10

0

–10

–20

–30

–40

–50

–60

–70

–80

–90

1

24-Lead Package

1068 TA19

Gain vs Frequency

10

FREQUENCY (kHz)

100

1068 TA20

FilterCAD Custom Inputs for fC = 10kHz

2nd ORDER SECTION f0 (kHz)

Q

fN (kHz)

QN

B

10.1389 0.7087 1.7779

C

9.8654 0.5540 44.7214

A

9.8830 0.5434 27.7227

D

12.4097 1.5264

TYPE MODE

HPN

3a

LPN

3a

LPN

3a

BP

3

1068fc

24

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