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LTC1069-1

Low Power, 8th Order

Progressive Elliptic,

Lowpass Filter

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FEATURE

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8th Order Elliptic Filter in SO-8 Package

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Operates from Single 3.3V to

±5V Power Supplies

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Wide Dynamic Range

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110

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3.8mA Supply Current with

±5V Supplies

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2.5mA Supply Current with Single 5V Supply

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2mA Supply Current with Single 3.3V Supply

is – 0.7dB and the typical passband ripple is

±0.15dB

LTC1069-1 features a progressive elliptic response

With

±5V supplies, the LTC1069-1 cutoff frequency can

be clock-tuned up to 12kHz; with a single 5V supply, the

maximum cutoff frequency is 8kHz.

The low power feature of the LTC1069-1 does not penal-

ize the device’s dynamic range. With

±5V supplies and an

+ THD) ratio is

≥70dB. The wideband noise of the

LTC1069-1 is 110

lower power or higher speed can be obtained. Please

contact LTC marketing for details.

The LTC1069-1 is available in 8-pin PDIP and 8-pin SO

packages.

APPLICATI

TYPICAL

Frequency Response

FREQUENCY (kHz)

1.5

–80

–70

–50

–40

–30

4.5

10

1069-1 TA02

–60

3

7.5

6

–20

–10

0

Single 3.3V Supply 3kHz Elliptic Lowpass Filter

1

2

3

4

8

7

6

5

NC

CLK

AGND

NC

0.1

µF

0.47

µF

3.3V

1069-1 TA01

LTC1069-1

300kHz

+

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Telecommunication Filters

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Antialiasing Filters

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APPLICATI

DESCRIPTIO

The LTC

featuring clock-tunable cutoff frequency and 2.5mA power

supply current with a single 5V supply. An additional

feature of the LTC1069-1 is operation with a single 3.3V

supply.

, LTC and LT are registered trademarks of Linear Technology Corporation.