Model XDL21-8-140 Rev. C Delay Line DESCRIPTION The XDL21-8-140 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 XDL21-8-140 can be used in amplifier linearization applications from 2110 - 2170MHz. The XDL21-8140 is ideal for use 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. ELECTRICAL SPECIFICATIONS Features: Frequency (MHz.) * UMTS Band * Production Friendly Mean Delay (nS) * Consistent Delay Deviation from Linear Phase (Degrees * Stable Over Temperature Max) * Surface Mountable Amplitude Flatness * Available in Tape & Reel (dB p-p) * Non-Lead Solder Paste Return Loss (dB min) Compatible * 100% Tested Insertion Loss (dB/nS) * Lead Free Power Handling (Watts) OUTLINE DRAWING 13.80.28 1.0 0.15 20 0.55 1 JC (C/watts) 5 Operating Temp. (C) -55 to +85 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) Hot Via 2110 - 2170 UMTS Band Side View 1.000.010 [25.400.25] GND Hot Via 1.000.010 [25.400.25] Orientation Marker Denotes Pin Location Denotes Array Number Dimensions are in Inches [Millimeters] XDL21-8-140 Mechanical Outline Bottom View (Far-side) Hot Via .773.004 [19.640.10] .134.015 [3.390.38] GND .774.004 [19.650.10] 2X .037.004 [0.940.10] 2X R.116 .848.004 [21.540.10] Pin 2 2X .062.004 [1.580.10] 2X .070.004 SQ [1.780.10] Pin 1 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 XDL21-8-140 Rev. C Typical Performance: 500 MHz to 2500 MHz Insertion Loss Return Loss 0 Insertion Loss [dB] Return Loss [dB] 0 -10 -20 -30 -40 -50 -60 -70 500 1000 1500 2000 2500 Frequency [MHz] -2 -4 -6 -8 -10 500 1000 1500 2000 2500 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 2X .037 [0.94] .889 [22.58] Multiple plated thru holes to ground .869 [22.06] 2X .076 SQ [1.93] 2X O.116 [2.95] .848 [21.54] 2X 50 2X .037 Transmission [0.94] Line Dimensions are in Inches [Millimeters] XDL21-8-140 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 XDL21-8-140 Rev. C Packaging Parts are oriented in embossed tape as shown below _ Orientation Marker Reel * * OA Parts are available in both reel and tube Quantity of 19 parts available per tube OC OD QUANTITY/REEL 250 TABLE 1 REEL DIMENSIONS (inches [mm]) OA 13.0 [330.0] B 1.732 [44.00] OC 4.017 [102.03] 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