KR Electronics, Inc. KR Series 2391A Lowpass Filter www.krfilters.com General Description Features • Flat passband response • Group delay equalized 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. Typical Performance Passband Response fc=1.75 MHz Overall Response fc=1.75 MHz (0.2 dB/div & 50 nsec/div) 100 KHz to 1.75 MHz (10 dB/div) 100 KHz to 10 MHz 28 Feb 2001 09:36:54 CH1 CH2 S31 S31 LOG DEL .2 dB/ 50 ns/ 28 Feb 2001 09:24:23 CH1 REF -.86 dB REF 1.66 us PRm PRm Cor Cor S31 LOG 10 dB/ REF -40 dB PRm Smo Cor START . 100 000 MHz STOP Figure 1 KR Electronics, Inc. 91 Avenel Street Avenel, NJ 07001 © 2001, KR Electronics, Inc. 1 . 750 000 MHz START . 100 000 MHz STOP 10 . 000 000 MHz Figure 2 Web Email Phone Fax www.krfilters.com [email protected] (732) 636-1900 (732) 636-1982 Page 1 KR Electronics, Inc. www.krfilters.com KR Series 2391A Series Lowpass Specifications Parameter Specification Filter type Lowpass Insertion Loss < 1 dB End of Passband (fc) 1.75 MHz to 10 MHz Passband Ripple < 0.25 dB Attenuation at 1.1 x fc < 3 dB Attenuation at 1.38 x fc > 45 dB Group Delay Ripple to fc User Specified < 87.5 nsec/ fc MHz Example: for fc=1.75 MHz Group Delay Ripple < 87.5/1.75 or < 50 nsec p-p Consult factory 50Ω or 75Ω Others available consult factory Source and Load 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 © 2001, KR Electronics, Inc. Web Email Phone Fax www.krfilters.com [email protected] (732) 636-1900 (732) 636-1982 Page 2