Model BD2425N5075A50 Rev A Ultra Low Profile 0404 Balun 50Ω to 75Ω Balanced Description The BD2425N5075A50 is a low cost, low profile sub-miniature unbalanced to balanced transformer designed for differential inputs and output locations on modern chipsets in an easy to use surface mount package. The BD2425N5075A50 is ideal for high volume manufacturing and delivers higher performance than traditional ceramic baluns. The BD2425N5075A50 has an unbalanced port impedance of 50Ω and a 75Ω balanced port impedance. This transformation enables single ended signals to be applied to differential ports on modern integrated chipsets. The output ports have equal amplitude (-3dB) with 180 degree phase differential. The BD2425N5075A50 is available on tape and reel for pick and place high volume manufacturing. Detailed Electrical Specifications: Specifications subject to change without notice. Features: • • • • • • • • • • • • 2400 – 2500 MHz 0.65mm Height Profile 50 Ohm to 2 x 37.5 Ohm Low Insertion Loss 802.11 b+g MIMO b+g Bluetooth Zigbee Surface Mountable Tape & Reel Non-conductive RoHS Compliant Parameter Frequency Unbalanced Port Impedance Balanced Port Impedance Return Loss Insertion Loss* Amplitude Balance Phase Balance CMRR Power Handling Operating Temperature ROOM (25°C) Min. 2400 Typ. 50 75 22 0.6 0.4 4 28 17 Max 2500 0.8 0.5 6 1 +85 -55 Unit MHz Ω Ω dB dB dB Degrees dB Watts ºC * Insertion Loss stated at room temperature (Insertion Loss is approximately 0.1 dB higher at +85 ºC) Outline Drawing Top View (Near-side) Side View Bottom View (Far-side) .022±.001 [0.57±0.03] .041±.004 [1.05±0.10] .012 [0.30] 1 0.12 [0.30] 2 3x.010 [0.25] .041±.004 [1.05±0.10] .020 [0.50] 4 .020 [0.50] 3 3x.010 [0.25] Pin Designation GND / DC Feed 1 + RF GND Dimensions are in Inches [Millimeters] Mechanical Outline 2 Unbalanced Port 3 Balanced Port 4 Balanced Port Available on Tape and Reel for Pick and Place Manufacturing. Tolerances are Non-Cumulative USA/Canada: Toll Free: Europe: (315) 432-8909 (800) 411-6596 +44 2392-232392 Model BD2425N5075A50 Rev A Typical Performance:2300 MHz. to 2600 MHz. Insertion Loss -3 -0.3 -6 -0.6 -9 -0.9 -12 -1.2 -15 -1.5 1.5 15 1 10 0.5 5 Frequency [MHz] Frequency [MHz] CMRR 0 -3 -6 -9 -12 -15 -18 -21 -24 -27 -30 -33 2600 2550 2500 2450 2400 -36 2350 2450 2600 -20 2550 -2 2500 -15 2450 -1.5 2400 -10 2350 -1 2400 0 -5 2350 0 -0.5 2300 deg 20 2300 2600 Phase Balance 2 2300 [dB] Amplitude Balance [dB] 2600 Frequency [MHz] Frequency [MHz] Frequency [MHz] USA/Canada: Toll Free: Europe: 2550 2300 2600 2550 2500 -3.6 2450 -36 2400 -3.3 2350 -3 -33 2550 -2.7 -30 2500 -2.4 -27 2500 -2.1 -24 2450 -1.8 -21 2400 -18 2350 [dB] 0 2300 [dB] Return Loss - Input 0 (315) 432-8909 (800) 411-6596 +44 2392-232392 Available on Tape and Reel for Pick and Place Manufacturing. Model BD2425N5075A50 Rev A Wide Band Performance: 500 MHz. to 8500 MHz. Insertion Loss -3 -0.3 -6 -0.6 -9 -0.9 -12 -1.2 -15 -1.5 7000 7500 8000 8500 8000 8500 5500 5500 5000 4500 4000 3500 3000 2500 2000 500 8500 8000 7500 7000 -20 6500 -2 6000 -15 5500 -1.5 5000 -10 4500 -1 1500 0 -5 1000 0 -0.5 4000 7500 5 3500 6500 0.5 3000 7000 10 2500 6500 1 2000 6000 15 deg 1.5 1500 5000 Phase Balance 20 1000 6000 Amplitude Balance 2 500 4500 Frequency [MHz] Frequency [MHz] [dB] 4000 500 8500 8000 7500 7000 6500 6000 5500 5000 4500 4000 3500 3000 2500 -3.6 2000 -36 1500 -3.3 1000 -3 -33 3500 -2.7 -30 3000 -2.4 -27 2500 -2.1 -24 2000 -1.8 -21 1500 -18 1000 [dB] 0 500 [dB] Return Loss - Input 0 Frequency [MHz] Frequency [MHz] CMRR 0 -3 -6 -9 -12 -18 -21 -24 -27 -30 -33 8500 8000 7500 7000 6500 6000 5500 5000 4500 4000 3500 3000 2500 2000 1500 1000 -36 500 [dB] -15 Frequency [MHz] Available on Tape and Reel for Pick and Place Manufacturing. USA/Canada: Toll Free: Europe: (315) 432-8909 (800) 411-6596 +44 2392-232392 Model BD2425N5075A50 Rev A Mounting Configuration: In order for Xinger surface mount components to work optimally, the proper impedance transmission lines must be used to connect to the RF ports. If this condition is not satisfied, insertion loss, Isolation and VSWR may not meet published specifications. All of the Xinger components are constructed from ceramic filled PTFE composites which possess excellent electrical and mechanical stability having X and Y thermal coefficient of expansion (CTE) of 17 ppm/oC. An example of the PCB footprint used in the testing of these parts is shown below. An example of a DC-biased footprint is also shown below. In specific designs, the transmission line widths need to be adjusted to the unique dielectric coefficients and thicknesses as well as varying pick and place equipment tolerances. With No DC Bias With DC Bias Plated thru hole to ground 3X .011 [0.29] .008 [0.21] 3X .011 [0.29] 3X Transmission Line .008 [0.21] 3X .011 [0.29] .014 [0.36] .008 [0.21] .020 [0.50] 3X Transmission Line .020 [0.50] Circuit Pattern Footprint Pad (s) Footprint Pad (s) USA/Canada: Toll Free: Europe: Dimensions are in Inches [Millimeters] Mounting Footprint (315) 432-8909 (800) 411-6596 +44 2392-232392 .014 [0.36] .008 [0.21] .020 [0.50] Circuit Pattern Solder Resist Plated thru hole to ground 3X .011 [0.29] Available on Tape and Reel for Pick and Place Manufacturing. Solder Resist .020 [0.50] Dimensions are in Inches [Millimeters] Mounting Footprint Model BD2425N5075A50 Rev A Packaging and Ordering Information Parts are available in reel and are packaged per EIA 481-2. Parts are oriented in tape and reel as shown below. Minimum order quantities are 4000 per reel. See Model Numbers below for further ordering information. ØA ØC ØD QUANTITY/REEL 4000 TABLE 1 REEL DIMENSIONS (inches [mm]) ØA 7.00 [177.8] B 0.32 [8.0] ØC 2.0 [50.8] ØD 0.512 [13.0] B Available on Tape and Reel for Pick and Place Manufacturing. USA/Canada: Toll Free: Europe: (315) 432-8909 (800) 411-6596 +44 2392-232392