bel fuse inc. 198 van vorst street, jersey city, nj 07302 ? tel 201-432-0463 ? fax 201-432-9542 ? www.belfuse.com high frequency magnetics ?1999 bel fuse inc. specifications subject to change without notice. 06.99 tm9923 t148 wideband hybrid signal combiner & splitter schematic 1 5 2 64 3 asig bsig csig gnd mechanical electrical specifications at 25 c ? a wideband, equal-ratio hybrid transformer suitable for both analog and digital applications requiring signal splitting or combining ? qualified per bellcore tr-tsy-00357-1 ? meets iec-695, 2-2 flammability requirements ? compatible with standard printed-wiring board assembly and cleaning processes and machine placement ? compatible with infrared (ir) reflow soldering processes so it can be used in mixed-assembly (wave and reflow) solder application r e b m u n t r a p e c n a d e p m i o i t a r l a n i m o n t i l p s l a n g i s b d b d 3 h t d i w d n a b p y t e s l u p e m i t e s i r p y t s n ) 6 - 4 ( + ) 6 - 3 ( : ) 6 - 1 ( g i s b o t g i s a g i s c o t g i s a g i s b o t g i s a g i s c o t g i s a 2 j 9 8 6 25 7 w 5 7 : w 5 7 + w 0 . 3z h m 0 0 8 - z h k 0 25 . 0 0.70 [17.78] max 0.45 [11.43] max 0.120 0.006 [3.05 0.15] terminal 1 id 0.250 [6.35] 0.40 [10.16] max 0.400 [10.16] 0.200 [5.08] 0.120 [3.05] 3 2 1 654 bottom view 0.023 [0.58] sq typ (phosphor bronze, solder-coated)
corporate bel fuse inc. 198 van vorst street jersey city, nj 07302 tel 201-432-0463 fax 201-432-9542 www.belfuse.com far east bel fuse ltd. 8f / 8 luk hop street san po kong kowloon, hong kong tel 852-2328-5515 fax 852-2352-3706 www.belfuse.com europe bel fuse europe ltd. preston technology management centre marsh lane, suite f23, preston lancashire, pr1 8ud, u.k. tel 44-1772-556601 fax 44-1772-888366 www.belfuse.com high frequency magnetics ?1999 bel fuse inc. specifications subject to change without notice. 06.99 tm9923 t149 wideband hybrid signal combiner & splitter pin symbol name and function 1 asig a signal. input for splitter configuration. output for combiner application. 2 com1 common point of transformer 1. must be connected externally to com2. 3 bsig b signal. output for splitter configuration. input for combiner application. 4 csig c signal. output for splitter configuration. input for combiner application. 5 com2 common point of transformer 2. must be connected externally to com1. 6 gnd ground. connect to circuit ground. r1 162 w external resistor. c1 7 pf external capacitor. applications notes the 2689J2 hybrid transformer operates with 75 w terminations over an extremely wide frequency spectrum (3 db response: 20 khz to 800 mhz). it can also be used as a pulse transformer with very fast pulses (typical rise time: 0.5 ns). the 2689J2 operates as either a signal splitter or a signal combiner. as a signal splitter, the trans- former provides two identical output signals (which are in phase with each other) from a single input. each of the two output signals is 3 db down from the input signal (half the power of the input signal). there is a high degree of separation or transhybrid loss between the two output signals. as a signal combiner, the trans- former provides a single output signal from two identical input signals (which are in phase with each other). the output signal has twice the power of either input signal. pin descriptions and terminations pin diagram signal splitter signal combiner 1 2 3 asig com1 bsig 6 5 4 gnd com2 csig 2689J2 asig com1 gnd bsig csig r 1 input input 75 line 75 line com2 c 1 75 line output 2689J2 asig com1 gnd bsig csig r 1 output output 75 line 75 line com2 c 1 input 2689J2 75 line
|
