this is information on a product in full production. october 2012 doc id 023215 rev 1 1/8 8 BAL-NRF01D3 50 ohm balun transformer for 2g45 ism matched nordic?s chipset: nrf24le1 qfn32, nrf24 ap2-1ch and nrf24ap2-8ch datasheet ? production data features 50 ? nominal input / conjugate match to nrf24le1 qfn32, nrf24ap2-1ch and nrf24ap2-8ch low insertion loss low amplitude imbalance low phase imbalance small footprint: < 1.5 mm 2 benefits very low profile: < 595 m after reflow high rf performance rf bom and area reduction applications 2.45 ghz impedance matched balun filter optimized for nordic's chipset nrf24le1/ap2 description stmicroelectronics BAL-NRF01D3 is an ultraminiature balun. the BAL-NRF01D3 integrates matching network and harmonics filter. matching impedance has been customized for the following nordic semi conductor circuits: nrf24le1 qfn-32 pins, nrf24ap2-1ch and nrf24ap2-8ch. the BAL-NRF01D3 uses stmicroelectronics ipd technology on non conductive glass substrate which optimize rf performances. the BAL-NRF01D3 has been tested and approved by nordic semiconductor in their nrf2723 nrfgo module. figure 1. pinout diagram (top view) lead-free flip-chip package 5 bumps se diff diff vcc gnd a b c 123 www.st.com
characteristics BAL-NRF01D3 2/8 doc id 023215 rev 1 1 characteristics table 1. absolute maximum ratings (limiting values) symbol parameter value unit min. typ. max. p in input power rfin 20 dbm v esd esd ratings mil std883c (hbm: c = 100 pf, r = 1.5 k ? , air discharge) 2000 v esd ratings charge device model (jesd22-c101-c) 500 esd ratings machine model (mm: c = 200 pf, r = 25 ? , l = 500 nh) 200 t op operating temperature -40 +85 c table 2. impedances (t amb = 25 c) symbol parameter value unit min. typ. max. z out nominal differential output impedance conjugate match to nrf24le1/ap2 ? z in nominal input impedance 50 ? table 3. rf performance (t amb = 25 c) symbol parameter test condition value unit min. typ. max. f frequency range (bandwidth) 2400 2540 mhz i l insertion loss in bandwidth 2.25 db r l return loss in bandwidth 10 db ? imb phase imbalance 3 aimb amplitude imbalance 0.1 db 2f0 2nd harmonic filtering 4880 mhz 10 db 3f0 3rd harmonic filtering 7320 mhz 20 db
BAL-NRF01D3 characteristics doc id 023215 rev 1 3/8 1.1 on-board simulations figure 2. insertion loss (t amb = 25 c) figure 3. return loss @ single port (t amb = 25 c) f (ghz) 0 5 10 15 20 25 30 transmission (db) 01 2 3 4 5 6 78 2.40 2.44 2.47 2.49 2.50 -5 -7.5 -10 -12.5 -15 return loss on se port (db) 2.41 2.42 2.43 2.45 2.46 2.48 f (ghz) figure 4. amplitude imbalance (t amb = 25 c) figure 5. phase imbalance (t amb = 25 c) -20 -25 -30 -35 -40 -45 return loss on diff port (db) f (ghz) 2.40 2.44 2.47 2.49 2.50 2.41 2.42 2.43 2.45 2.46 2.48 0.5 0.3 0.1 0.0 -0.2 -0.4 -0.5 amplitude imbalance (db) f (ghz) 2.40 2.44 2.47 2.49 2.50 2.41 2.42 2.43 2.45 2.46 2.48 0.4 0.2 -0.1 -0.3 figure 6. transmission (t amb = 25 c) 10 6 phase imbalance (deg) f (ghz) 2.40 2.44 2.47 2.49 2.50 2.41 2.42 2.43 2.45 2.46 2.48 8 4 0 2 -4 -2 -6 -8
application information BAL-NRF01D3 4/8 doc id 023215 rev 1 2 application information figure 7. application schematic (courtesy of nordic semiconductor figure 8. application board (courtesy of nordic semiconductor) BAL-NRF01D3 BAL-NRF01D3
BAL-NRF01D3 package information doc id 023215 rev 1 5/8 3 package information in order to meet environmental requirements, st offers these devices in different grades of ecopack ? packages, depending on their level of environmental compliance. ecopack ? specifications, grade definitions and product status are available at: www.st.com . ecopack ? is an st trademark. figure 9. package dimensions (bump side view) figure 10. footprint figure 11. marking 600 m 205 m se gnd vcc diff diff 1010 m 50 500 m 1475 m 50 500 m 433 m 400 m 630 m 60 copper pad diameter: 220 m recommended 260 m maximum solder stencil opening: 220 m recommended solder mask opening: 300 m minimum x y x w z w dot, st logo ecopack grade xx = marking z = manufacturing location yww = datecode
package information BAL-NRF01D3 6/8 doc id 023215 rev 1 figure 12. flip chip tape and reel specifications note: more information is available in the stmicroelectronics application notes: an2348 flip-chip: ?package description and recommendations for use? an4111: ?BAL-NRF01D3 matched balun with integrated harmonic filter for nordic nrf24le1 qfn32, nrf24ap2-1ch and nrf24ap2-8ch? dot identifying pin a1 location user direction of unreeling all dimensions are typical values in mm 4.0 4.0 2.0 8.0 1.75 3.5 ? 1.55 0.71 1.1 0.22 1.57 st st st xxz xxz xxz yww yww yww
BAL-NRF01D3 ordering information doc id 023215 rev 1 7/8 4 ordering information 5 revision history table 4. ordering information order code marking weight base qty delivery mode BAL-NRF01D3 sc 1.82 mg 5000 tape and reel table 5. document revision history date revision changes 15-oct-2012 1 initial release.
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