available on tape and reel for pick and place manufacturing. usa/canada: toll free: europe : (315) 432-8909 (800) 544-2414 +44 2392-232392 model XDL20-8-140S rev. a delay line description the xdl20-8-140 is a surface mount delay line that uses a slow wave coupling structure that maximizes th e amount of delay per unit area over other distributed delay structur es. the xdl20-8-140 can be used in amplifier linearization applications from 1805 ? 1990mhz. the xdl20-8- 140 is ideal for use in the main loop of feed forward and in pre-distortion amplifiers. the xinger? delay lines are a low cost, high quality alternative to the traditional coaxial and filter soluti ons presently avail able. parts have been subjected to rigorous qualification te sting and units are 100% tested. available in 6 of 6 tin immersion (x dl20-8-140s) rohs compliant finishes. electrical specifications features: ? production friendly ? consistent delay ? stable over temperature ? surface mountable ? available in tape & reel ? non-lead solder paste compatible ? available in lead-free as illustrated) or tin-lead ? 100% tested frequency (mhz.) 1805-1880 dcs band 1930?1990 pcs band mean delay (ns) 13.60 0.28 14.2 0.28 deviation from linear phase (degrees max) 1.0 1.0 amplitude flatness (db p-p) 0.40 0.30 return loss (db min) 20 20 insertion loss (db/ns) 0.55 0.55 power handling (watts) 1 1 jc (c/watts) 5 5 operating temp. (c) -55 to +85 -55 to +85 specification based on performance of unit properly in stalled on microstrip printed circuit boards with 50 nominal impedance. specifications subject to change without notice. outline drawing .134 .027 [3.39 0.68 ] 1.000 .010 [25.40 0.25 ] 1.000 .010 [25.40 0.25 ] 2x .070 .004 s q [1.78 0.10 ] pin 2 pin 1 xdl20-8-140* mechanical outline dimensions are in inches [millimeters] hot via 2x .037 .004 [0.94 0.10 ] gnd 2x .062 .004 [1.58 0.10 ] gnd orientation marker denotes pin location denotes array number .774 .004 [19.65 0.10 ] hot via hot via .773 .004 [19.64 0.10 ] .848 .004 [21.54 0.10 ] 2x r.116
usa/canada: toll free: europe: (315) 432-8909 (800) 544-2414 +44 2392-232392 available on tape and reel for pick and place manufacturing. model XDL20-8-140S rev. a typical performance: 500 mhz. to 2500 mhz. average delay the average delay is defined as the group delay of the input signal through the delay line. because the xinger delay lines take advantage of a narrow band tuning technique, the av erage delay over the broad band varies. because the xdl20-8-140 is tuned at 2.0ghz, the averag e delay in that range is larger than at 1.0 ghz and specifications reflect this variation. the lot-to-lot variation is reflect ed in the plus/minus tolerance given in specifications. refer to anaren application note aan-232 fo r further information on xinger delay lines. mounting guidelines: xdl20-8-140* mounting footprint dimensions are in inches [millimeters] 2x 50 transmission line 2x .076 sq [1.93] to insure proper electrical and thermal performance there must be a ground plane with 100% solder connection underneath the part 2x ?.116 [2.95] .869 [22.06] .848 [21.54] .889 [22.58] multiple plated thru holes to ground 2x .037 [0.94] 2x .037 [0.94] in order for xinger surface mount delay lines to work optimally, there must be 50 transmission lines leading to and from all of the rf ports. also, there must be a very good ground plane under the part with a number of plated thru holes to ensure proper electrical performance. if any of these conditions are not satisfied, insertion loss, average delay and vswr may not meet published specifications. when a surface mount delay line is mounted to a printed circuit board (pcb), the primary concerns are; insuring the rf pads of the device are in contact with the circuit trace of the pcb and the ground plane of neither the component nor the pcb are in contact with the rf signal. an example of how the pcb footprint could look is shown below. in particular designs, the 50 lines need to be adjusted to the unique dielectric coefficients and thicknesses as well as varying pick and place equipment tolerances.
available on tape and reel for pick and place manufacturing. usa/canada: toll free: europe : (315) 432-8909 (800) 544-2414 +44 2392-232392 model XDL20-8-140S rev. a packaging and ordering information parts are available in both reel and tube. packaging follo ws eia 481-2. parts are oriented in tape and reel as shown below. minimum order quantities are 250 per reel and 19 per tube. carrier tape orientation marker reel
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