Model XDL20-7-115S Rev. A Delay Line DESCRIPTION The XDL20-7-115 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 XDL20-7-115 can be used in amplifier linearization applications from 1930 – 1990MHz. The XDL20-7115 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 solutions presently available. Parts have been subjected to rigorous qualification testing and units are 100% tested. Available 6 of 6 tin immersion (XDL20-7-115S) RoHS compliant finishes ELECTRICAL SPECIFICATIONS Frequency (MHz.) 1930–1990 PCS Band Mean Delay (nS) 11.45 ± 0.20 Deviation from Linear Phase (Degrees Max) ± 0.50 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 Amplitude Flatness (dB p-p) Return Loss (dB min) Insertion Loss (dB/nS) 0.10 20 0.55 Power Handling (Watts) 1 ΘJC (°C/watts) 3.4 Operating Temp. (°C) -55 to +85 Specification based on performance of unit properly installed on microstrip printed circuit boards with 50Ω nominal impedance. Specifications subject to change without notice. OUTLINE DRAWING Hot Via 1.000±.010 [25.40±0.25] .134±.013 [3.39±0.33] Hot Via GND 1.000±.010 [25.40±0.25] Hot Via .773±.004 [19.64±0.10] 2X .062±.004 [1.58±0.10] GND .774±.004 [19.65±0.10] 2X R.116 2X .070±.004 SQ [1.78±0.10] Denotes Array Number Orientation Marker Denotes Pin Location Dimensions are in Inches [Millimeters] XDL20-7-115* Mechanical Outline 2X .037±.004 [0.94±0.10] Pin 2 .848±.004 [21.54±0.10] Pin 1 * For RoHS Compliant Versions order with S suffix 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 XDL20-7-115S Rev. A TYPICAL PERFORMANCE: 1.5 GHz. To 2.5 GHz 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 Ø.116 [2.95] .848 [21.54] 4X 50 2X .037 Transmission Line [0.94] Dimensions are in Inches [Millimeters] XDL20-7-115* Mounting Footprint Tolerances are Non-Cumulative 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 50Ω 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 insure 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 50Ω lines need to be adjusted to the unique dielectric coefficients and thicknesses as well as varying pick and place equipment tolerances. Model XDL20-7-115S Rev. A PACKAGING INFORMATION Parts are available in both reel and tube. Packaging follows EIA 481-2. Parts are oriented in tape and reel as shown below. Minimum order quantities are 250 per reel and 19 per tube. Orientation Marker Available on Tape and Reel For Pick and Place Manufacturing. USA/Canada: Toll Free: Europe: (315) 432-8909 (800) 544-2414 +44 2392-232392