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Model 3W512 Rev. B 50 Description to 12.5 Balun Balanced The 3W512 is a low profile balanced to unbalanced transformer designed for pushpull amplifiers in an easy to use surface mount package for PCS, DCS, and UMTS. These compact Xinger(R) surface mount baluns are ideal for high volume manufacturing and are more reliable and repeatable than traditional baluns. The 3W512 has an unbalanced port impedance of 50 and balanced port impedances of 12.5 to ground with a 25 balance between outputs. This eases the matching of the push-pull amplifier's power transistors, which have low impedance levels. The output ports have equal amplitude (-3dB) with 180 degree phase differential. The Xinger(R) balun is a result of years of research and development culminating with a solution so unique, a patent is pending on the design approach. The 3W512 is available on tape and reel for pick and place high volume manufacturing. www..com * * * * * * * * * * Features: ELECTRICAL SPECIFICATIONS*** Frequency GHz 1.8 - 2.2 GHz 180 Transformer 50 Ohm to 12.5+j5.5 Ohm Broad Band Low Insertion Loss High Power Even Order Suppression Input to Output DC Isolation Surface Mountable Tape & Reel * Convenient Package Unbalanced Port Impedance Ohms Balanced Port Impedance* Ohms Return Loss dB Min Insertion Loss** dB max 1.8 - 2.2 Amplitude Balance dB max 50 Phase Balance Degrees max 12.5+j5.5 Power Handling Watts 15 JC C / Watt 0.40 Operating Temp. C 0.40 180+ 5.0 150 11.3 -55 to +85 Outline Drawing Top View (Near-side) **Specification based on performance of unit properly installed on microstrip printed circuit boards with 50 nominal impedance. Specifications subject to change without notice. * 50 reference to ground Side View .075.008 [1.910.20] Pin 3 .050.008 [1.270.20] .030.004 [0.760.10] GND Bottom View (Far-side) .100.004 [2.540.10] Pin 3 .290.004 [7.370.10] .035.008 [0.890.20] Pin 2 .030.004 TYP [0.760.10] .050.008 [1.270.20] .232.008 [5.910.20] Pin 2 .750.010 [19.050.25] .550.010 [13.970.25] GND Pin 1 Denotes Array Number Pin 1 .112.004 [2.860.10] Dimensions are in Inches [Millimeters] 3W512 Rev A Mechanical Outline 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 3W512 Rev. B Typical Performance: 1600 MHz. to 2400 MHz. Amplitude Balance 3W512 0.5 0.4 0.3 Amplitude Balance [dB] Return Loss [dB] Return Loss 3W512 0 0.2 0.1 0 -0.1 -0.2 -0.3 -0.4 -0.5 1600 1700 1800 1900 2000 2100 2200 2300 2400 -10 -20 -30 -40 1600 1700 1800 1900 2000 2100 2200 2300 2400 www..com Frequency [MHz] Insertion Loss 3W512 Frequency [MHz] Phase Balance 3W512 -170 0 -0.2 Phase Balance [Degrees] -0.1 Insertion Loss [dB] -175 -180 -0.3 -0.4 -185 -0.5 1600 1700 1800 1900 2000 2100 2200 2300 2400 -190 1600 1700 1800 1900 2000 2100 2200 2300 2400 Frequency [MHz] Frequency [MHz] Pin Configuration: Mounting Configuration: To ensure proper electrical and thermal performance there must be a ground plane with 100% solder connection underneath the part .340 [8.64] 2 Places 12.5 Transmission Line Referenced to GND .050 [1.27] .034 [0.86] .075 [1.90] .030 [0.76] .075 [1.90] .080 [2.03] .221 [5.62] .450 [11.43] .030 TYP [0.76] .115 [2.92] 50 Transmission Line .070 [1.78] Multiple plated thru holes to ground Dimensions are in Inches [Millimeters] 3W512 Rev A 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. |
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