Datasheet > 156531

156531

更新时间： 2022-12-18 04:32:04

品牌	Logo	应用领域
凌特 - Linear		/
页数	文件大小	规格书
12页	193K
描述
650kHz Continuous Time, Linear Phase Lowpass Filter

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156531 数据手册

LTC1565-31

650kHz Continuous Time,

Linear Phase Lowpass Filter

FEATURES

DESCRIPTIO

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 acqui-

sition systems. The filter attenuation is 36dB at 2× f_CUTOFF

and at least 72dB for frequencies above 3× f_CUTOFF. Unlike

comparable LC filters, the LTC1565-31 achieves this selec-

tivity 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

■

With 5% accuracy of the cutoff frequency, the LTC1565-31

canbeusedinapplicationsrequiringpairsofmatchedfilters,

such as transceiver I and Q channels. Furthermore, the

differential inputs and outputs provide a simple interface for

these wireless systems.

APPLICATIO S

■

CDMA Base Stations

■

Data Communications

With a single 5V supply and a 2V_P-Pinput, the LTC1565-31

featuresanimpressivespuriousfreedynamicrangeof75dB.

Themaximumsignal-to-noiseratiois78dBanditisachieved

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.

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

TYPICAL APPLICATIO

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

GAIN

Single 5V Supply, Differential 650kHz Lowpass Filter

–10

–20

–30

–40

–50

–60

–70

–80

–90

–100

–

+IN

–IN

+OUT

–OUT

OUT

DELAY

LTC1565-31

0.1µF

GND

0.1µF

–

SHDN

15645-31 TA01

FREQUENCY (Hz)

1565 G01

12 3 4 5 6 7...12

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