Linear Technology LTC1563-3CGN, Universal Lowpass Filter DC338A-B DC338A-B 数据表

1

LTC1563-2/LTC1563-3

156323fa

■

■

■

Supports Cutoff Frequencies Up to 360kHz Using
FilterCAD

TM

■

LTC1563-2: Unity-Gain Butterworth Response Uses a
Single Resistor Value, Different Resistor Values
Allow Other Responses with or without Gain

■

LTC1563-3: Unity-Gain Bessel Response Uses a
Single Resistor Value, Different Resistor Values
Allow Other Responses with or without Gain

■

Rail-to-Rail Input and Output Voltages

■

Operates from a Single 3V (2.7V Min) to 

±5V Supply

■

Low Noise: 36

µV

RMS

 for f

C

 = 25.6kHz, 60

µV

RMS

 for

f

C

 = 256kHz

■

f

C

 Accuracy < 

±2% (Typ)

■

DC Offset < 1mV

■

Cascadable to Form 8th Order Lowpass Filters

■

Available in Narrow SSOP-16 Package

The LTC

®

1563-2/LTC1563-3 are a family of extremely

easy-to-use, active RC lowpass filters with rail-to-rail
inputs and outputs and low DC offset suitable for systems
with a resolution of up to 16 bits. The LTC1563-2, with a
single resistor value, gives a unity-gain Butterworth
response. The LTC1563-3, with a single resistor value,
gives a unity-gain Bessel response. The proprietary
architecture of these parts allows for a simple resistor
calculation:

R = 10k (256kHz/f

C

); f

C

 = Cutoff Frequency

where f

C

 is the desired cutoff frequency. For many appli-

cations, this formula is all that is needed to design a filter.
By simply utilizing different valued resistors, gain and
other responses are achieved.

The LTC1563-X features a low power mode, for the lower
frequency applications, where the supply current is re-
duced by an order of magnitude and a near zero power
shutdown mode.

The LTC1563-Xs are available in the narrow SSOP-16
package (Same footprint as an SO-8 package).

■

Discrete RC Active Filter Replacement

■

Antialiasing Filters

■

Smoothing or Reconstruction Filters

■

Linear Phase Filtering for Data Communication

■

Phase Locked Loops

Active RC, 4th Order

Lowpass Filter Family

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

0.1

µF

3.3V

V

OUT

V

IN

R

R

R

R

R

R

f

C

 = 256kHz 

1563 TA01

LTC1563-2

0.1

µF

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

9

LP

SA

NC

INVA

NC

LPA

AGND

V

–

V

+

LPB

NC

INVB

NC

SB

NC

EN

10k

R

( )

FREQUENCY (Hz)

10k

1k

100

GAIN (dB)

10

0

–10

–20

–30

–40

–50

–60

–70

–80

100k

1M

1563 TA02

R = 10M
f

C

 = 256Hz

R = 10k

f

C

 = 256kHz

FilterCAD is trademark of Linear Technology Corporation.
All other trademarks are the property of their respective owners.