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LTC1565-31_1 PDF预览

LTC1565-31_1

更新时间: 2024-10-28 05:43:39
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

LTC1565-31_1 数据手册

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LTC1565-31  
650kHz Continuous Time,  
Linear Phase Lowpass Filter  
U
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× fCUTOFF  
and at least 72dB for frequencies above 3× fCUTOFF. 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.  
U
APPLICATIO S  
CDMA Base Stations  
Data Communications  
With a single 5V supply and a 2VP-P input, the LTC1565-31  
featuresanimpressivespuriousfreedynamicrangeof75dB.  
Themaximumsignal-to-noiseratiois78dBanditisachieved  
with a 2.5VP-P input 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.  
U
TYPICAL APPLICATIO  
Frequency Response  
10  
0
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  
1
2
8
7
+
+
V
V
V
V
+IN  
–IN  
+OUT  
–OUT  
IN  
IN  
OUT  
OUT  
DELAY  
LTC1565-31  
5V  
5V  
3
4
6
5
0.1µF  
+
GND  
V
0.1µF  
V
SHDN  
15645-31 TA01  
4
5
6
7
10  
10  
10  
10  
FREQUENCY (Hz)  
1565 G01  
1

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