Features
• 50 Ω nominal input / conjugate match to STMicroelectronics chips BlueNRG-134
WLCSP and BlueNRG-234 WLCSP
• Low insertion loss
• Low amplitude imbalance
• Low phase imbalance
• Ultraminiature footprint: < 1.2 mm2
• Extra low profile < 350 μm after reflow
• High RF performance
• RF BOM and area reduction

Applications
• 2.45 GHz impedance matched balun filter
• Optimized for STMicroelectronics chip set BlueNRG-134 and BlueNRG-234
WLCSP
• Wearable applications

Description
This device is an ultraminiature extra thin balun that integrates matching network and
harmonics filter.
Matching impedance has been customized for the BLUENRG-134 and BlueNRG-234
WLCSP from STMicroelectronics.
Based on IPD technology on high resistivity silicium it optimizes the RF performance.
STMicroelectronics qualified this product intended to be used in system in package
module based on standard reliability procedure. For more details, please contact ST
representatives.
It is the responsibility of the customer to perform qualification reliability verifications
as it is related to customer specific application, mission profile and module design,
process.