Model BD2425N50ATI

Rev A

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Ultra Low Profile 0404 Balun

for TI transceiver CC2500

50

to 127+j34

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.

ROOM (25°°°°C)

Parameter

Min.

Typ.

Max

Unit

Frequency

2300

2600

MHz

Unbalanced Port Impedance**

50

Balanced Port Impedance**

127+j34

Return Loss**

13

17

dB

Insertion Loss* **

0.4

0.6

dB

Power Handling

1

TBD

Watts

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

Operating Temperature

-55

+85

ºC

* 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

Mechanical Outline

Dimensions are in Inches [Millimeters]

Tolerances are Non-Cumulative

Bottom View (Far-side)

Side View

Top View (Near-side)

Unbalanced Port

GND / DC Feed

+ RF GND

4

3

Designation

Pin

1

2

1

2

3

4

Balanced Port

.041

+.003

-.002

-0.06

]

.041

+.003

-.002

-0.06

]

4X .020 [0.50]

Balanced Port

3x.010

[0.25]

3x.010

[0.25]

0.12 [0.30]

.012 [0.30]