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 1P520 rev b pico xinger 20db directional coupler description the 1P520 pico xinger is a low profile , miniature 20db directional coupler in an easy to use surface mount package designed for dcs and pcs applications. the 1P520 is for power and frequency detection as well as power injection. the 1P520 is an ideal solution for the ever-increasing demands of the wireless industry for smaller printed circuit boards and high performance. parts have been subjected to rigorous qualification testing and units are 100% tested. they are manufactured using materials with x and y thermal expansion coefficients compatible with common substrates. available in both 5 of 6 tin lead (1P520) and 6 of 6 rohs compliant tin immersion (1P520s). electrical specifications** frequency mean coupling insertion loss vswr freq. sensitivity ghz db db max max : 1 db max 1.7 ? 2.0 20 0.75 0.25 1.22 0.2 directivity power handling jc operating temp. db min ave cw watts oc / watt oc features: ? 1.7 ? 2.0 ghz ? dcs and pcs ? very low loss ? high directivity ? surface mountable ? tape and reel ? available in lead-free (as illustrated) or tin-lead 20 25 35 -55 to +85 **specification based on performance of unit proper ly installed on microstrip printed circuit boards with 50 nominal impedance. specifications subject to change without notice. 1P520* mechanical outline dimensions are in inches [millimeters] .250 .010 [6.35 0.25 ] .200 .010 [5.08 0.25 ] .066 .013 [1.67 0.33 ] pin 4 pin 1 pin 2 pin 3 pin 1 pin 4 pin 3 pin 2 4x .020 .004 [0.51 0.10 ] gnd 4x .034 .004 sq [0.86 0.10 ] orientation marker denotes pin location .120 .004 [3.05 0.10 ] .170 .004 [4.32 0.10 ] gnd denotes array number
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 1P520 rev b typical performance: 1.4 ghz. ? 2.3 ghz. coupling choice of a coupling value in an application normally depends on the power level of the main (sampled) line. for example, if the coupler is being used to monitor main line power, the coupling value is selected to provide sufficient power to the monitoring device and yet minimize system loss. note that any coupler reduces power flowing in the main li ne by the amount coupled off; a 10db coupler reduces main line power by 1 db (10%) where a 20db coupler reduces it by only 0.044db (1%). anaren uses mean coupling and frequency sensitivity with the coupling specification. the mean coupling value is arrived at by periodically sampling the coupling value over the specified band and averaging the readings. frequency sensitivity is the peak to peak variation in coupling over the specified band. vswr & directivity in directional couplers, direct ivity is specified in lieu of isolation. directivity is a measure of how well the coupled power is isolated from reflections at the main line output port. for example, open or short-circuiting the output port of a coupler with 20db directivity would only affect the coupled output power by 1% and only 0.1% for 30db directivity. high di rectivity is especia lly important if the coupler is being used to measure the vswr of a device at its output port. in this application, accurate measurements of forward and reverse power are required. in theory, vswr and directivity characteristics of a coupler are perfect; the input and output ports are perfectly matched and no power is coupled to the isolated port. in practice, factors associated with the design and manufacturing processes limit vswr and directivity. the coupling 1P520s -22 -21 -20 -19 -18 1.4 1.5 1.6 1.7 1.8 1.9 2 2.1 2.2 2.3 frequency (ghz) coupling (db) return loss 1P520s -50 -40 -30 -20 -10 0 1.4 1.5 1.6 1.7 1.8 1.9 2 2.1 2.2 2.3 frequency (ghz) return loss (db) directivity 1P520s -50 -40 -30 -20 -10 1.4 1.5 1.6 1.7 1.8 1.9 2 2.1 2.2 2.3 frequency (ghz) directivity (db) transmission loss 1P520s -0.4 -0.3 -0.2 -0.1 0 1.4 1.5 1.6 1.7 1.8 1.9 2 2.1 2.2 2.3 frequenc y ( ghz ) transmission loss (db)
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 1P520 rev b vswr & directivity (continued) internal meandering of the coupled lines and limitations of building perfect 50 transitions at the input and output ports of the device are the most significant factors against perfect vswr and directivity. typically, vsw r and directivity of 1.15:1 and 25 db respectively are achieved in practice. insertion loss coupler insertion loss is defined as the log of the input power divided by the sum of the power at the two output ports. in practice, typical loss is approximately 0.20 db. s pecification limits are somewhat higher due to imperfect test conditions; surface mount couplers must be tested in test fixtures that negatively affect results. pin configuration the 1P520?s have an orientation marker to denote either pin 1 or pin 2. when the input port is identified, the output, coupled and isolated ports are known automatically. for example, if the input port for a device was selected to be pin 1, pin 2 automatically becomes the output port, pin 4 becomes the coupled port, and pin 3 is the isolated port. similarly, if pin 2 was to be selected as the input port, the adjacent port on the long side (pin 1) is the output port, the adjacent port on the short side (pin 3) is the coupled port, and the opposite port (pin 4) is the isolated port. either port on the same side as the orientation marker can be selected as the input port, as shown in the table, which shows both pin configurations . the use of pin 1 or pin 2 as the input port ensures phase consistency as well as maximum power handling. mounting for xinger surface mount couplers to operate optimally, there must be 50 transmission lines leading to and from all of the rf ports. to ensure proper electrical and thermal performance, there must be a ground plane with 100% solder connection underneath the part. if either of these two conditions is not satisfied, insertion loss, coupling, vswr and directivity may not meet published specifications. suggested footprint 1P520* mounting footprint dimensions are in inches [millimeters] to ensure proper electrical and thermal performance there must be a ground plane with 100% solder connection underneath the part 4x .063 sq [1.60] 4x .034 [0.86] .170 [4.32] .120 [3.05] 4x 50 ? transmission line multiple plated thru holes to ground
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 1P520 rev b packaging packaging follows eia-481-2. parts are oriented in t ape as shown below. minimum order quantities are 2000 per reel and 77 per tube. xinger ? tape & reel diagram
|
