? isolation : 1500 vrms ? cable impedance : 100 w ? rise time : 3.0 ns max. ? insertion loss (db max.) common mode rejection (db min.) crosstalk (db min.) [between channels] return loss (db min.) -1 -1 1-80 mhz 30-100 mhz -12 -3.5 -18 100-200 mhz -10 200-500 mhz -45 -40 10-100 mhz -40 5-10 mhz 80-100 mhz 100-150 mhz 1-30 mhz 30-60 mhz 60-100 mhz xmit rcv xmit rcv xmit rcv xmit rcv xmit rcv xmit rcv xmit rcv xmit rcv xmit rcv -30 -15 -1 -1 -12 -3 -18 -10 -45 -30 -15 electrical parameters @ 25 c 10/100 lan interface module for nic/hub card applications, mini package csf8018ga rev. 1 11/26/96 ? guaranteed to operate with 8 ma dc bias at 70 c on cable side ? ? complies with or exceeds ieee 802.3, 10 bt/100 bx standards ? dimensions a b c d e f g h i j k l m n p q dim. .780 .290 .223 .700 .003 .100 .350 .016 .008 .045 0 .025 min. .800 .310 .243 typ. .020 typ. .370 .022 .012 typ. 8 .045 max. .030 .100 .092 .410 nom. (inches) (millimeters) 19.81 12.95 5.66 17.78 0.076 2.54 8.89 .406 .203 1.14 0 .635 min. 20.321 3.46 6.17 typ. .508 typ. 9.40 .559 .305 typ. 8 1.14 max. .762 2.54 2.34 17.78 nom. package EPF8018G ocl @ 70 c 100 khz, 0.1 vrms 8 ma dc bias 350 m h cable side g l k p pad layout q m n a b pca EPF8018G date code pin 1 i.d. j hf e c d schematic transmit channel receive channel 7 rx+ rd+ 1 rd- 2 ct 3 6 rx- 5 ct 1:1 td- 16 td+ 15 ct 14 11 tx+ 12 ct 10 tx- e l e c t r o n i c s i n c . 2 :1 i tel: (818) 892-0761 fax: (818) 894-5791 http://www.pca.com pca electronics, inc. 16799 schoenborn st . north hills, ca 91343 product performance is limited to specified parameters. data is subject to change without prior notice.
csf8018gb rev. 1 11/26/96 the circuit below is a guideline for interconnecting pcas EPF8018G 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 EPF8018G. there need not be any ground plane beyond this point. 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 notes : * nic side is shown. hub side connection will have crossover swapping pins 1-2 & 3-6. qsi66 11 or qsi66 12 rj45* 1 2 6 3 4 5 7 8 td+ td- rd+ rd- chassis ground 50 w 50 w 75 w 75 w node pinout EPF8018G 25 w high voltage capacitor 25 w 10 11 7 6 12 5 16 15 1 2 14 25 w 25 w 100 w 39 w 100 w cm capacitor +5v 10/100 lan interface module for nic/hub card applications, mini package EPF8018G e l e c t r o n i c s i n c . tel: (818) 892-0761 fax: (818) 894-5791 http://www.pca.com pca electronics, inc. 16799 schoenborn st. north hills, ca 91343 xmit rcv
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