Datasheet > LTC1565-31

LTC1565-31

更新时间： 2023-12-20 18:46:32

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
12页	182K
描述
650kHz 连续时间、线性相位低通滤波器

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LTC1565-31 数据手册

LTC1565-31

650kHz Continuous Time,

Linear Phase Lowpass Filter

FEATURES

DESCRIPTION

The LTC^®1565-31 is a 7th order, continuous time, linear

phase lowpass ﬁlter. The selectivity of the LTC1565-31,

combined with its linear phase and dynamic range, make

it suitable for ﬁltering in data communications or data

acquisition systems. The ﬁlter attenuation is 36dB at

2× f_CUTOFFand at least 72dB for frequencies above 3×

f_CUTOFF. Unlike comparable LC ﬁlters, the LTC1565-31

achieves this selectivity with a linear phase response in

the passband.

7th Order, 650kHz Linear Phase Filter in an SO-8

Differential Inputs and Outputs

Operates on a Single 5V or a 5V Supply

Low Offset: 5mV Typical

75dB THD and SNR

78dB SNR

Shutdown Mode

Requires No External Components

Requires No External Clock Signal

With5%accuracyofthecutofffrequency,theLTC1565-31

can be used in applications requiring pairs of matched

ﬁlters,suchastransceiverIandQchannels.Furthermore,

the differential inputs and outputs provide a simple inter-

face for these wireless systems.

APPLICATIONS

CDMA Basestations

Data Communications

Withasingle5Vsupplyanda2V_P-Pinput,theLTC1565-31

features an impressive spurious free dynamic range of

75dB. The maximum signal-to-noise ratio is 78dB and it

is achieved with a 2.5V_P-Pinput signal.

Antialiasing Filters

Smoothing or Reconstruction Filters

Matched Filter Pairs

Replacement for LC Filters

The LTC1565-31 features a shutdown mode where power

supply current is typically less than 10μA.

For W-CDMA, 3G, CDMA 2000 and other cellular and

noncellular cutoff frequencies or single-ended I/O, please

contact LTC Marketing for additional information.

L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear

Technology Corporation. All other trademarks are the property of their respective owners.

TYPICAL APPLICATION

Frequency Response

2.0

1.9

1.8

1.7

1.6

1.5

1.4

1.3

1.2

1.1

1.0

0.9

Single 5V Supply, Differential 650kHz Lowpass Filter

GAIN

–10

–20

–30

–40

–50

–60

–70

–80

–90

–100

–

+IN

–IN

+OUT

–OUT

OUT

LTC1565-31

DELAY

0.1μF

GND

0.1μF

–

SHDN

15645-31 TA01

FREQUENCY (Hz)

1565 G01

156531fa

12 3 4 5 6 7...12

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