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AN4111 Datasheet(PDF) 1 Page - STMicroelectronics |
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AN4111 Datasheet(HTML) 1 Page - STMicroelectronics |
1 / 17 page June 2013 DocID023194 Rev4 1/17 AN4111 Application note BAL-NRF01D3 matched balun with integrated harmonics filter for Nordic Semiconductor ultralow power transceivers Introduction The nRF24LE1, nRF24AP2, nRF51422 and nRF51822 QFN from Nordic Semiconductor are 2.45 GHz combo chips with an ultralow power transceiver. The BAL-NRF01D3 from STMicroelectronics is an ultra miniature balun for which the matching impedance has been customized for the nRF24LE1 QFN-32, nRF24AP2-1CH, nRF24AP2-8CH, nRF51422-QFAA, and nRF51822-QFAA Nordic Semiconductor circuits. The BAL-NRF01D3 integrates matching network and harmonics filters. It uses STMicroelectronics’ IPD technology on non-conductive glass substrate which optimizes RF performance. Compared to traditional discrete solutions (Figure 3), STMicroelectronics BAL-NRF01D3 decreases the BOM count by 80%, from 5 components to 1 component (Figure 4). This results in a lower system cost solution. The BAL-NRF01D3 has been tested and approved by Nordic Semiconductor in the nRF2723 nRFgo module (from the nRFgo nRF24LE1 QFN-32 pins development kit) and the nRF2752 nRFgo module (from the nRFgo nRF51x22 Developer Preview kit). The BAL-NRF01D3 demonstrates a higher system performance compared to traditional solutions. This document presents the test and performance results. www.st.com |
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