www.clare.com ds-CYG2218-r1.0 1 CYG2218 cybergate clare s cybergate CYG2218 daa module provides a complete telephone line interface circuit featuring 0db insertion loss. it includes a 2-4 wire converter for transmit and receive signal separation in a small 1.07" x 1.07" x 0.4" package. the module provides a fast and cost effective solution for designs that require an interface to the telephone line. the module is designed to meet fcc part 68 requirements thus providing a low risk design solution. modems fax machines remote data acquisition security systems voice mail systems pc motherboard computer telephony process control medical pbx direct broadcast satellite ul recognized file #: e174201 zero insertion loss low distortion transformer signal coupling (0.01% max) complete ring detector circuit low power hookswitch electronic inductor/gyrator circuit solid state surge protection transient protection zeners complete hybrid circuit (2-4 wire converter) included compatible with all modem chip sets v.32 bis/v.34 compatible applications features description approvals ordering information part # description CYG2218 daa module (18/tube) block diagram 2 to 4 wire converter line transformer line current circuit hookswitch surge protection ring detect tip ring xmit+ rcv oh ri handling and assembly recommendations the CYG2218 products are not hermetically sealed and should not be exposed to any liquid-based rinsing processes. clare recomme nds two (2) approaches. the modem should either use a no clean soldering flux that would mostly evaporate during the normal wave soldering processes, or be soldered by hand after the rest of the card is wave soldered.
www.clare.com 2 CYG2218 rev. 1.0 absolute maximum ratings are stress ratings. stresses in excess of these ratings can cause permanent damage to the device. functional operation of the device at these or any other conditions beyond those indicated in the opera- tional sections of this data sheet is not implied. exposure of the device to the absolute maximum ratings for an extended period may degrade the device and effect its reliability. absolute maximum ratings (@ 25? c) parameter min typ max units isolation voltage - - 1000 v rms operational temperature 0 - 70 c storage temperature 0 - 100 ? relative humidity 10 - 85 % (non-condensing) soldering temperature - - 260 ? tip/ring load current (continuous) - - 120 ma hookswitch led drive - - 50 ma current hookswitch led reverse - - 5 v voltage ring detect phototransistor voltage v cc --20v 1 derate linearly 1.33 mw / oc 2 derate linearly 3.67 mw / oc electrical characteristics parameter conditions min typ max units dc electrical characteristics on-hook impedance 2,1 (r,t) per fcc 68.312 @100v v dc across pins 1,2 10 - - m ? off-hook line leakage current 2,1 (r,t) per fcc 68.312 @100v v dc across pins 1,2 - - 10 a power supply current @ v cc v cc =5v 4 5 6 ma hookswitch control current @ (oh) @v oh =2.4v 3.5 4.1 5.0 ma @v oh =5.0v 11.8 12.4 13 ma hookswitch control voltage off-hook - 2.0 3.0 20 v on-hook - - 0.2 0.5 v ac signal path electrical characteristics return loss 600 ? , 1800hz 39 40 - db insertion loss 600 ? , 1800hz transmit test circuit 1 -1.0 0 +1.0 db receive test circuit 2 -1.0 0 +1.0 db frequency response 300-3500hz -0.25 - +0.25 db longitudinal balance on-hook per fcc 68.310 60 - - db off-hook per fcc 68.310 40 - - db transhybrid loss 600 ? , 1800hz - -32 -10 db total harmonic distortion 600 ? , 1800hz - -80 - db dc loop current - 20 - 120 ma ring detection circuit characteristics ringing voltage detection range - 20 - 150 v rms ringing frequency detection range - 15 - 70 hz ringer equivalence number - - 0.8b - - ring (pin 5) output voltage (pulsed) v cc =+5v logic ?? ring present - - 0.8 v logic ?? ring not present - - v cc v surge and isolation characteristics surge protection voltage tip and ring (pins 1,2) - - - 300 v isolation voltage (pins 18,17,16,15,14,5,4,to1,2) per fcc 68.302 1000 - - v rms
CYG2218 www.clare.com 3 rev. 1.0 test circuits tip ring +5v +5v 600 ? +v batt ev batt oh ri 10h 10h 600 v cc rcv nc gnd xmit+ v lt i loop ac source 1. CYG2218 transmit insertion loss g log v v tr lt t = 20 transmit insertion loss = tip ring +5v oh ri v cc v r rcv nc gnd xmit+ +v batt ev batt 10h 600 ? 10h v lr i loop ac source 2. CYG2218 receive insertion loss g log v v rc r lr = 20 receive insertion loss = +5v package pinout top view 18 17 1 2 4 5 gnd xmit+ rcv 14 16 15 v cc nc tip ring oh ri CYG2218 pinouts & definitions pin# name function 1 tip connection to telephone line tip connected through an external fuse. 2 ring connection to telephone line ring conductor. 4 oh driving this pin high asserts the off-hook condition. the hookswitch led is current limited by an internal 300 ? resistor. 5 ri active low indicates an incoming ring signal. this is pulsed low by the ac ring signal and is not a steady state low during ringing. 14 rcv provides the analog output signal from the 2-4 wire converter of the CYG2218. rcv uses a 2.5 volt reference signal and therefore must be capacitively coupled to host equipment which uses a ground reference. 15 nc no connection. 16 v cc provides power to the CYG2218. typically +5v, v cc should not exceed 20v. 17 xmit+ provides the analog intput signal from the 2-4 wire converter of the CYG2218. xmit+ uses a 2.5 volt reference signal and therefore must be capacitively coupled to host equipment which uses a ground reference. 18 gnd connection to host system ground. CYG2218
clare, inc. makes no representations or warranties with respect to the accuracy or completeness of the contents of this publica tion and reserves the right to make changes to specifications and product descriptions at any time without notice. neither circuit patent licenses nor indemnity are expressed or implied. except as set forth in cl are s standard terms and conditions of sale, clare, inc. assumes no liability whatsoever, and disclaims any express or implied warranty, relating to its products including, but not limited to, the implied warranty of merc hantability, fitness for a particular purpose, or infringement of any intellectual property right. the products described in this document are not designed, intended, authorized or warranted for use as components in systems in tended for surgical implant into the body, or in other applications intended to sup- port or sustain life, or where malfunction of clare s product may result in direct physical harm, injury, or death to a person or severe property or environmental damage. clare, inc. reserves the right to discontinue or make changes to its products at any time without notice. specification: ds-CYG2218-r1.0 ?copyright 2002, clare, inc. cybergate is a trademark of clare, inc. all rights reserved. printed in usa. 3/22/02 for additional information please visit our website at: www.clare.com
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