electrical parameters @ 25 c ? isolation : 1500 vrms ? impedance : 100 w ? rise time : 3.0 ns max. insertion loss (db max.) common mode rejection (db min.) crosstalk (db min.) return loss (db min.) 0.1-80 mhz 30-100 mhz 200 mhz 300 mhz 80-100 mhz 150 mhz 1-10 mhz 20-30 mhz 40-60 mhz xmit rcv xmit rcv xmit rcv xmit xmit rcv xmit rcv xmit rcv xmit rcv xmit rcv ocl @ 70 c 100 khz, 0.1 vrms 8 ma dc bias 350 m h media side -1 -1 -14 -3 -18 -10 -30 0.1-100 mhz -30 -25 -20 -1 -1 -18 -3 rcv -18 -18 -25 -20 -10 10/100 base-x module for qsi 6611/6612 multi-port applications ? also recommended for broadcom bcm5208 10/100 solution ? ? significantly improved common mode attenuation ? ? guaranteed to operate with 8 ma dc bias at 70 c ? ? complies with or exceeds ieee 802.3, 10 bt/100 bx standards ? EPF8050S dimensions package schematic e l e c t r o n i c s i n c . csf8050sa rev. orig. 3/6/97 receive channel media side 1:1 39, 34, 29, 24 40, 35, 30, 25 chip side 2, 7, 12, 17 1, 6, 11, 16 transmit channel 36, 31, 26, 21 38, 33, 28, 23 37, 32, 27, 22 5, 10, 15, 20 4, 9, 14, 19 3, 8, 13, 18 media side chip side a b c d e f g h i j k l m n p q dim. 1.110 .470 .235 .950 .008 .050 .620 .016 .008 .085 0 .045 min. 1.130 .490 .255 typ. .012 typ. .630 .022 .012 typ. 8 typ. max. .030 .050 .090 .670 nom. (inches) (millimeters) 28.19 11.94 5.97 24.13 .203 1.27 15.75.. 406 .203 2.16 0 1.14 min. 28.70 12.45 6.48 typ. .305 typ. 16.00 .559 .305 typ. 8 typ. max. .762 1.27 2.29 17.02 nom. f solder pad layout pca EPF8050S date code b q n m p 120 21 40 c l i g e d h a k j tel: (818) 892-0761 fax: (818) 894-5791 http://www.pca.com pca electronics, inc. 16799 schoenborn st. north hills, ca 91343 2 ct:1ct 500 mhz xmit rcv -15 --- 70-100 mhz xmit rcv -8 -10 product performance is limited to specified parameters. data is subject to change without prior notice.
csf8050sb rev. ori g . 3/6/97 10/100 base-x module for qsi 6611/6612 multi-port applications EPF8050S e l e c t r o n i c s i n c . the circuit below is a guideline for interconnecting pcas EPF8050S with qsi6611 and qsi6612 chip set for 10.100 mb/s applications. further details can be obtained from the chip manufacturer application notes. typical insertion loss of the isolation transformer is 0.5db. this parameter covers the entire spectrum of the encoded signals in 10/100 protocols. under terminated conditions, to transmit a 2v pk-pk signal across the cable, you must adjust the chips supporting resistor to get at least 2.12v pk-pk across the transmit pins. it is recommended that system designers do not use the receiver side center tap to ground, via a capacitor. this may worsen emi, specifically if the secondary common mode termination is pulled to chassis ground as shown. the phantom resistors shown around the connector have been known to suppress unwanted radiation that unused wires pick up from the immediate environment. their placement and use are to be considered carefully before a design is finalized. the common mode termination load of 75 w shown from the center taps of the secondary may be taken to chassis ground via a cap of suitable value. this depends upon users design, emi margin etc. it is recommended that there be a neat separation of ground planes in the layout. it is generally accepted practice to limit the plane off at least 0.05 inches away from the chip side pins of EPF8050S. there need not be any ground plane beyond this plane. for best results, pcb designer should design the outgoing traces preferably to be 50 w , balanced and well coupled to achieve minimum radiation from these traces. typical application circuit for utp tel: (818) 892-0761 fax: (818) 894-5791 http://www.pca.com pca electronics, inc. 16799 schoenborn st. north hills, ca 91343 notes : r = 80 w suggested; rc typical 39 w . consult qsi for update. * nic side is shown. hub side connection will have crossover swapping pins 3-6 & qsi6611 or qsi6612 rj45* 1 2 6 3 4 5 7 8 tx+ tx- rx+ rx- chassis ground 50 w 50 w 75 w node pinout EPF8050S 25 w high voltage capacitor 25 w 40 39 38 36 37 3 5 1 2 4 25 w 25 w r +5v r cm capacitor rc rcv xmit r = 80 suggested
|
