ANAREN BD2425N50ATI

Model BD2425N50ATI
Rev A
Ultra Low Profile 0404 Balun
for TI transceiver CC2500
50Ω to 127+j34Ω Balanced
(Anaren Application Note Ann-2003)
Description
The BD2425N50ATI 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 BD2425N50ATI is ideal for
high volume manufacturing and delivers higher performance than traditional ceramic
baluns. The BD2425N50ATI has an unbalanced port impedance of 50Ω and 127+
j34Ω 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 BD2425N50ATI 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 63.5+j17 Ohm
Low Insertion Loss
Surface Mountable
Tape & Reel
Non-conductive Surface
RoHS Compliant
Zigbee
ROOM (25°°C)
Parameter
Min.
Frequency
Unbalanced Port Impedance**
Balanced Port Impedance**
Return Loss**
2300
Typ.
Unit
2600
MHz
Ω
Ω
dB
0.4
0.6
dB
1
TBD
+85
Watts
ºC
50
127+j34
17
13
Insertion Loss* **
Power Handling
Operating Temperature
Max
-55
* Insertion Loss stated at room temperature (Insertion Loss is approximately 0.1 dB higher at +85 ºC)
* Stated performance assumes proper matching network found in application note: ANN-2003
Outline Drawing
Top View (Near-side)
.041+.003
-.002
1.05+0.08
-0.06
[
]
Side View
.041+.003
-.002
1.05+0.08
-0.06
[
]
Bottom View (Far-side)
.012 [0.30]
.024 ±.0025
[0.62 ±0.064] 0.12 [0.30] 1
2
3x.010
[0.25]
4
4X .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
Tolerances are Non-Cumulative
Sales Desk USA: Voice: (800) 544-2414 Fax: (315) 432-9121
Sales Desk Europe: Voice: (+44) 2392 232392 Fax: (+44) 2392 251369
Model BD2425N50ATI
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
o
and mechanical stability having X and Y thermal coefficient of expansion (CTE) of 17 ppm/ C.
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 DC Bias
Plated thru
hole to
ground
3X .011
[0.29]
.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)
Solder Resist
Sales Desk USA: Voice: (800) 544-2414 Fax: (315) 432-9121
Sales Desk Europe: Voice: (+44) 2392 232392 Fax: (+44) 2392 251369
Dimensions are in Inches [Millimeters]
Mounting Footprint
Model BD2425N50ATI
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]
2.0 [50.8]
ØC
ØD
0.512 [13.0]
B
Sales Desk USA: Voice: (800) 544-2414 Fax: (315) 432-9121
Sales Desk Europe: Voice: (+44) 2392 232392 Fax: (+44) 2392 251369