KR Electronics, Inc. KR 2543 Bandpass Filter www.krfilters.com General Description KR 2543 is a 70 MHz surface mount bandpass filter with constant group delay from 60 MHz to 80 MHz. Other center frequencies and bandwidths available. Please consult the factory. Features • Surface Mount Package • Flat Group Delay 60 to 80 MHz • Sharp Transition to Stopband • >60 dB Stopband • 50 Ω Source and Load Typical Performance Passband Amplitude & Group Delay Overall Response (1 dB/div and 2 nsec/div) (10 dB/div) 13 Sep 2004 14:19:54 CH1 CH2 S 21 S 21 log MAG delay 1 dB/ 2 ns/ REF -1 dB REF 48 ns 13 Sep 2004 14:14:21 CH1 2_ 52.586 ns PRm Cor S 21 log MAG 10 dB/ REF -1 dB PRm 1 2 80.000 000 MHz PRm Cor 2 1 Avg 16 Smo CENTER 70.000 000 MHz CENTER 70.000 000 MHz KR Electronics, Inc. 91 Avenel Street Avenel, NJ 07001 © 2004, KR Electronics, Inc. SPAN 139.000 000 MHz SPAN 30.000 000 MHz Web Email Phone Fax www.krfilters.com [email protected] (732) 636-1900 (732) 636-1982 Page 1 KR Electronics, Inc. www.krfilters.com KR 2543 Bandpass Specifications Parameter Specification Filter type Bandpass Center Frequency Insertion Loss 70 MHz < 3 dB (2 dB typical) Min 1 dB Bandwidth 30 MHz Max 60 dB Bandwidth 70 MHz Group Delay Variation 60 MHz to 80 MHz 2 nsec Source and Load 50 Ω Physical Dimensions Notes: 1. Surface mount package — Metal cover, open frame 2. Dimensions in inches 3. Use SN60 or SN63 solder during installation 4. If boards are cleaned after installation, units must be completely dried to remove any entrapped moisture that will effect electrical performance KR Electronics, Inc. 91 Avenel Street Avenel, NJ 07001 © 2004, KR Electronics, Inc. Web Email Phone Fax www.krfilters.com [email protected] (732) 636-1900 (732) 636-1982 Page 2