Model XDL21-1-027 Rev B Delay Line Description The XDL21-1-027 is a surface mount delay line that uses a slow wave coupling structure that maximizes the amount of delay per unit area over other distributed delay structures. The XDL21-1-027 can be used in amplifier linearization applications from 2110- 2170MHz. The XDL21-1-027 is ideal for the delay element required in the main loop of feed forward and in pre-distortion amplifiers. The Xinger(R) delay lines are a low cost, high quality alternative to the traditional coaxial and filter solutions presently available. Parts have been subjected to rigorous qualification testing and units are 100% tested. Features: * UMTS Band * Production Friendly * Consistent Delay * Stable over Temperature * Surface Mountable * Available in Tape & Reel * Non-Lead Solder Paste Compatible * 100% Tested Mechanical Drawing ELECTRICAL SPECIFICATIONS Frequency (MHz.) 2110-2170 UMTS Band Mean Delay (nS) 2.7 0.05 Deviation from Linear Phase (Degrees Max) 0.5 Amplitude Flatness (dB p-p) Return Loss (dB min) Insertion Loss (dB/nS) 0.10 20 0.60 Power Handling (Watts) 1 JC (C/watts) 2.73 Specification based on performance of unit properly installed on microstrip printed circuit boards with 50 nominal impedance. Specifications subject to change without notice. Top View (Near-side) Side View .650.010 [16.510.25] .048.005 [1.220.13] GND Orientation Marker Denotes Pin Location Denotes Array Number Dimensions are in Inches [Millimeters] XDL21-1-027 Mechanical Outline Bottom View (Far-side) GND 1.000.010 [25.400.25] 2X .037.004 [0.940.10] Pin 2 2X .070.004 SQ [1.780.10] Pin 1 .498.004 [12.650.10] Tolerances are Non-Cumulative 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 XDL21-1-027 Rev B Typical Performance: 875 to 2175MHz Insertion Loss 0 0 -10 -0.2 Insertion Loss [dB] Return Loss [dB] Return Loss -20 -30 -40 -50 -0.4 -0.6 -0.8 -1 -1.2 -60 875 975 1075 1175 1275 1375 1475 1575 1675 1775 1875 1975 2075 2175 Frequency [MHz] -1.4 875 975 1075 1175 1275 1375 1475 1575 1675 1775 1875 1975 2075 2175 Frequency [MHz] AVERAGE DELAY The average delay is defined as the group delay of the input signal through the delay line. The lot-to-lot variation is reflected in the plus/minus tolerance given in specifications. Refer to Anaren Application Note AAN-232 for further information on Xinger delay lines. Mounting Guidelines: To insure proper electrical and thermal performance there must be a ground plane with 100% solder connection underneath the part Multiple plated thru holes to ground .498 [12.65] 4X .037 [0.94] .848 [21.54] 2X 50 Transmission Line 4X .076 SQ [1.93] Dimensions are in Inches [Millimeters] XDL21-1-027 Mounting Footprint USA/Canada: Toll Free: Europe: (315) 432-8909 (800) 544-2414 +44 2392-232392 Available on Tape and Reel For Pick and Place Manufacturing. 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. Model XDL21-1-027 Rev B Packaging _ Parts are oriented in embossed tape as shown below Reel * * OA Parts are available in both reel and tube Quantity of 19 parts available per tube OC OD QUANTITY/REEL 500 TABLE 1 REEL DIMENSIONS (inches [mm]) OA 13.0 [330.2] B 1.732 [44.0] OC 7.0 [177.8] OD 0.512 [13.0] B Available on Tape and Reel For Pick and Place Manufacturing. USA/Canada: Toll Free: Europe: (315) 432-8909 (800) 544-2414 +44 2392-232392