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 KR Electronics, Inc.
KR Series 2391A Lowpass Filter
General Description KR Series 2391A are group delay equalized lowpass filters. The filter's flat passband response and group delay equalization make them good choices for video applications. Cutoff frequencies can be specified from 1.75 MHz to 10 MHz.
www.krfilters.com
Features * Flat passband response * Group delay equalized
Typical Performance
Passband Response fc=1.75 MHz
(0.2 dB/div & 50 nsec/div) 100 KHz to 1.75 MHz
28 Feb 2001 09:36:54
CH1 CH2 S31 S31 LOG DEL .2 dB/ 50 ns/ REF -.86 dB REF 1.66 us CH1 S31
Overall Response fc=1.75 MHz
(10 dB/div) 100 KHz to 10 MHz
28 Feb 2001 09:24:23
LOG 10 dB/ REF -40 dB
PRm
PRm
Cor
Cor
PRm Smo Cor
START
. 100
000
MHz
STOP
1 . 750
000
MHz
START
. 100
000
MHz
STOP
10 . 000
000
MHz
Figure 1
Figure 2
KR Electronics, Inc. 91 Avenel Street Avenel, NJ 07001 (c) 2001, KR Electronics, Inc.
Web Email Phone Fax
www.krfilters.com sales@krfilters.com (732) 636-1900 (732) 636-1982 Page 1
KR Electronics, Inc.
KR Series 2391A Series Lowpass
Specifications
www.krfilters.com
Parameter Filter type Insertion Loss End of Passband (fc) Passband Ripple Attenuation at 1.1 x fc Attenuation at 1.38 x fc Group Delay Ripple to fc
Specification Lowpass < 1 dB 1.75 MHz to 10 MHz < 0.25 dB < 3 dB > 45 dB < 87.5 nsec/ fc MHz Example: for fc=1.75 MHz Group Delay Ripple < 87.5/1.75 or < 50 nsec p-p 50 or 75 Consult factory User Specified
Source and Load
Others available consult factory
Physical Dimensions
Also available in a 4 x 2 x 0.5 inch metal can with PCB terminals All dimensions in inches
KR Electronics, Inc. 91 Avenel Street Avenel, NJ 07001 (c) 2001, KR Electronics, Inc.
Web Email Phone Fax
www.krfilters.com sales@krfilters.com (732) 636-1900 (732) 636-1982 Page 2


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