Features
• 50 Ω nominal input / conjugate match to Nordic Semiconductor chips nRF51822
WLCSP
• Low insertion loss
• Low amplitude imbalance
• Low phase imbalance
• Small 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 Nordic's chip set nRF51822-CTAA, CTAC
• 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 nRF51822-CTAA and CTAC
WLCSP Nordic Semiconductor circuits.
Based on IPD technology on high resistivity silicium it optimizes the RF performance.
The BALF-NRF01J5 has been tested and approved by Nordic Semiconductor.
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.