BAL-NRF02D3 50 ohm nominal input / conjugate match balun to nRF51822- CEAA/CDAB/CFAC and nRF51422-CEAA/CDAB/CFAC Datasheet - production data Description STMicroelectronics BAL-NRF02D3 is an ultraminiature balun. The BAL-NRF02D3 integrates matching network and harmonics filter. Matching impedance has been customized for the following Nordic Semiconductor circuits: nRF51422-CEAA, nRF51422-CDAB, nRF51422- CFAC and nRF51822-CEAA, nRF51822-CDAB, nRF51822-CFAC. Flip-Chip (5 bumps) package The BAL-NRF02D3 uses STMicroelectronics IPD technology on non-conductive glass substrate which optimizes RF performance. Features The BAL-NRF02D3 has been tested and 50 nominal input / conjugate match to approved by Nordic Semiconductor in the nRFgo modules. Nordic Semiconductor chips nRF51422- CEAA, nRF51422-CDAB, nRF51422-CFAC Figure 1: Pin coordinates and nRF51822-CEAA, nRF51822-CDAB, nRF51822-CFAC Low insertion loss Low amplitude imbalance Low phase imbalance 2 Small footprint: < 1.2 mm Benefits Very low profile < 570 m after reflow with pad 260 m max. or < 585 m after reflow with pad 220 m typ. High RF performance RF BOM and area reduction Applications 2.45 GHz impedance matched balun filter Optimized for Nordic s chip set nRF51422- CEAA, nRF51422-CDAB, nRF51422-CFAC and nRF51822-CEAA, nRF51822-CDAB, nRF51822-CFAC November 2017 DocID024794 Rev 8 1/11 www.st.com This is information on a product in full production. Characteristics BAL-NRF02D3 Application Figure 2: Application schematic C1 12pF X1 16MHz C2 12pF C8 100nF VCC nRF C9 1.0nF VCC nRF B8 VDD B9 A1 DCC AVDD P0.30 D8 G6 P0.30 VSS P0.31 E8 G9 C7 P0.31 VSS P0.00 C9 D7 B1 100nF P0.00 VSS P0.01 E9 C1 B3 A1RF P0.01 ANT2 ANT2 SE P0.02 D9 D1 A3 P0.02 ANT1 ANT1 P0.03 F9 E1 A2 B1 P0.03 VDD PA VDD PAGND P0.04 F8 F1 P0.04 DEC2 P0.05 H9 G1 P0.20 BAL-NRF02D3 P0.05 P0.20 P0.06 G8 F2 P0.19 P0.06 P0.19 VCC nRF P0.07 H7 H1 P0.18 P0.07 P0.18 H8 G2 P0.17 VDD P0.17 C11 C10 C3 100nF 47nF 2.2nF U1 nRF51822-CEAA R1 12k 2/11 DocID024794 Rev 8 B1 VSS B4 C7 P0.29 VSS P0.29 P0.08 J8 B7 P0.28 P0.08 P0.28 P0.09 J7 A8 P0.27 P0.09 P0.27 P0.10 H6 A7 P0.26 P0.10 P0.26 P0.11 J6 C5 P0.25 P0.11 P0.25 P0.12 J5 A6 P0.24 P0.12 P0.24 P0.13 H5 B6 P0.23 P0.13 P0.23 P0.14 H4 B5 P0.22 P0.14 P0.22 P0.15 J4 A5 P0.21 P0.15 P0.21 P0.16 J3 A4 P0.16 DEC1 SWDIO J2 A3 SWDIO/nRESET XC2 SWDCLK H2 A2 SWDCLK XC1 C8 VSS H3 VSS