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BAL-2690D3U fiches techniques PDF

STMicroelectronics - EMI Filtering And Signal Conditioning

Numéro de référence BAL-2690D3U
Description EMI Filtering And Signal Conditioning
Fabricant STMicroelectronics 
Logo STMicroelectronics 





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BAL-2690D3U fiche technique
BAL-2690D3U
50 / 30+j25 balun transformer for 2.45 GHz ISM band
Features
50 Ω nominal input / 30+j25 output differential
impedance
Low insertion loss
Low amplitude imbalance
Low phase imbalance
Small footprint: BAL-2690D3U < 1 mm²
Benefits
Very low profile (<700 µm)
High RF performances
RF BOM and area reduction
Applications
Balun transformer for applications such as:
Bluetooth STLC2690
Mobile phone
Description
The BAL-2690D3U is a balun designed to
www.DataStrhaenets4fUo.rcmomsingle ended signals to differential
signals in Bluetooth applications.
The BAL-2690D3U has been customized for the
STLC2690 Bluetooth transceiver with 0.8 dB
insertion losses in the bandwidth
(2400 MHz - 2500 MHz) and with a specific
requirement for the SCC22 parameter.
The BAL-2690D3U has been designed using
STMicroelectronics IPD (integrated passive
device) technology on non conductive glass
substrate to optimize RF performances.
Flip Chip
4 bumps
Figure 1. Top view
Top View
GND AA2
SE BB22
AA11 BAL -
ZZCC
BB11 BAL +
Bump Name Description
A1 BAL- RF balanced ouput
A2 GND Ground
B1 BAL+ RF balanced ouput
B2 SE RF input
Figure 2. Application schematic
2.4G
Antenna
Band
Pass
Filter
WLAN
PA
+ SP3T
BT
Balun
BT
RFIC
January 2010
TM: IPAD is a trademark of STMicroelectronics.
Doc ID 16056 Rev 1
1/8
www.st.com
8

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