Model BD4859N50100A00
Rev D
Ultra Low Profile 0404 Balun
50Ω to 100Ω Balanced
Description
The BD4859N50100A00 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 covering 802.11a Uni-Band II &
III and the Japanese ISM band (4.9 GHz). The BD4859N50100A00 is ideal for high
volume manufacturing and delivers higher performance than traditional ceramic
baluns. The BD4859N50100A00 has an unbalanced port impedance of 50Ω and a
100Ω 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 BD4859N50100A00
is available on tape and reel for pick and place high volume manufacturing.
Detailed Electrical Specifications: Specifications subject to change without notice.
ROOM (25°C)
Features:
Parameter
Min.
Typ.
Max
Unit
MHz
Ω
• 4800 – 5900 MHz
Frequency
4800
5900
• 0.65mm Height Profile
• 50 Ohm to 2 x 50 Ohm
• Low Insertion Loss
• 802.11a Uni-Band II & III
• Home Cordless Compliant
• Surface Mountable
• Tape & Reel
Unbalanced Port Impedance
Balanced Port Impedance
Return Loss
50
100
20
Ω
15
dB
Insertion Loss*
0.4
0.9
3
0.6
1.5
8
dB
Amplitude Balance
Phase Balance
CMRR
dB
Degrees
dB
• Non-conductive Surface
• RoHS Compliant
26
Power Handling
Operating Temperature
1
Watts
ºC
-55
+85
* 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)
+.003
-.002
+0.08
.012 [0.30]
.041
±.0025
±0.064
.024
[0.62
+.003
.041
1
-.002
1.05
[
-0.06
]
]
0.12 [0.30]
+0.08
2
3
1.05
[
-0.06
]
3x.010
[0.25]
4
3x.010
[0.25]
4X .020 [0.50]
Pin
1
Designation
GND / DC Feed
+ RF GND
2
3
4
Unbalanced Port
Balanced Port
Balanced Port
Dimensions are in Inches [Millimeters]
Mechanical Outline
Tolerances are Non-Cumulative
USA/Canada:
Toll Free:
(315) 432-8909
(800) 411-6596
+44 2392-232392
Available on Tape
and Reel for Pick and
Place Manufacturing.
Europe: