LTC1164

14

1164fa

Figure 14. LTC1164 8th Order Lowpass

Elliptic, fCUTOFF = 5kHz

LTC1164 • AC07

FREQUENCY (Hz)

1k

–90.00

–70.00

–40.00

10.00

10k

50k

–10.00

–80.00

–60.00

–50.00

–30.00

0.0

–20.00

fCLK = 250kHz

VS = ±7.5V

fC = 5kHz, 100:1

–78dB AT 2.0 fCUTOFF

Figure 13. LTC1164 8th Order Lowpass Elliptic, fCUTOFF = 5kHz, fCLK = 250kHz, –78dB at 10kHz,

Passband Noise = 110µVRMS ±5V (Also Refer to the LTC1164-6)

LTC1164 • AC06

124

223

322

421

520

619

0.1µF

0.1µF

48.7k

31.6k

40.2k

309k

63.4k

34.0k

127k

29.4k

158k

28.0k

31.6k

39.2k

30.1k

210k

27.4k

43.2k

31.6k

69.8k

ALL RESISTORS MF 1%

0.1µF

718

817

916

10

15

11

14

12

13

R2

R2

R4

R4

V+

V+

V+

V–

V–

VIN

1k

R3

R3

R3

R2

RH

RH

RL

Rh

RI

RL

RL

RH

R4

R3

R1

R2

R4

R3

R1

R2

R4

VOUT

fCLK

0.1µF

–

+

LT1006

B

B

A

A

D

D

C

C

LTC1164

46.4k

TYPICAL APPLICATIO S