LT1064 데이터 시트보기 (PDF) - Linear Technology

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LT1064

Low Noise, Fast, Quad Universal Filter Building Block

Linear Technology 

LTC1064

TYPICAL APPLICATIONS

R13a

VIN2

8V

R11a

VIN1

R13b

C2

1000pF

0.1µF

R11b

C1

1000pF

Dual 5th Order Chebyshev Lowpass Filter with

50kHz and 100kHz Cutoff Frequencies

R14

R23

R33

R43

2pF

22pF

R41

R31

R21

1 INV B

INV C 24

2 HPB/NB HPC/NC 23

3 BPB

BPC 22

4 LPB

LPC 21

5 SB

SC 20

6 AGND

V– 19

7 V+ LTC1064 CLK 18

8 SA

50/100 17

9 LPA

LPD 16

10 BPA

BPD 15

11 HPA/NA

HPD 14

12 INV A

INV D 13

R24

R34

R44

5MHz

T2L

R42

R32

R22

R12

4pF

0.1µF

VOUT2

fC = 100kHz

–8V

VOUT1

fC = 50kHz

39pF

RESISTOR VALUES:

R11a = 4.32k R21 = 11.8k

R11b = 27.4k R22 = 20k

R12 = 10.5k R23 = 11.8k

R13a = 3k R24 = 20k

R13b = 29.4k

R14 = 10.5k

Amplitude Response

15

PASSBAND RIPPLE = 0.2dB

0

– 15

–30

–45

–60

–75

–90

–105

10k

50k 100k

INPUT FREQUENCY (Hz)

R31 = 29.4k R41 = 10k

R32 = 21.5k R42 = 31.6k

R33 = 29.4k R43 = 10k

R34 = 21.6k R44 = 31.6k

1M

1064 TA20

1064 TA19

Clock-Tunable, 30kHz to 90kHz 8th Order Notch

Filter Providing Notch Depth in Excess of 60dB

R13

C2

R14

8V

R11

VIN1

R22

R32

R42

C1

0.1µF

R12

R31

R21

1 INV B

INV C 24

2 HPB/NB HPC/NC 23

3 BPB

BPC 22

4 LPB

LPC 21

5 SB

SC 20

6 AGND

V– 19

7 V+ LTC1064 CLK 18

8 SA

50/100 17

9 LPA

LPD 16

10 BPA

BPD 15

11 HPA/NA

HPD 14

12 INV A

INV D 13

R23

R33

–8V

C3

R44

R34

R24

RL4

0.1%

0.1µF

fCLK ≤ 5MHz

C1 = C2 = C3 = 15pF

THE NOTCH DEPTH FROM

5kHz TO 30kHz IS 50dB

WIDEBAND NOISE = 300µVRMS

RG

Amplitude Response

10

0

BW

–10

–20

–30

–40

–50

–60

–70

–80

–90 VS = ±8V

–100 fCLK = 4MHz

–110

10 20 30

40 50

60 70

INPUT FREQUENCY (kHz)

1064 TA22

RH4

0.1%

RESISTOR VALUES:

R11 = 50k R21 = 5k R31 = 50k

R G = 68.1k

R12 = 15.4k R22 = 10k R32 = 88.7k R42 = 48.7k R L4 = 10k (0.1%)

R13 = 10k R23 = 10k R33 = 100k

R H4 = 10k (0.1%)

R14 = 9.09k R24 = 10k R34 = 63.4k R44 = 12.4k

–

LT1056

+

VOUT

1064 TA21

RELATED PARTS

PART NUMBER

LTC1061

LTC1164

LTC1264

DESCRIPTION

Triple Universal Filter Building Block

Low Power, Quad Universal Filter Building Block

High Speed, Quad Universal Building Block

COMMENT

Three Filter Building Blocks in a 20-Pin Package

Low Noise, Low Power Pin-for-Pin LTC1064 Compatible

Up to 250kHz Center Frequency

Information furnished by Linear Technology Corporation is believed to be accurate and reliable.

However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-

tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.

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