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RF226AP Datasheet(PDF) 44 Page - NXP Semiconductors |
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RF226AP Datasheet(HTML) 44 Page - NXP Semiconductors |
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44 / 46 page  6.2 PCB design To achieve the required performance the PCB design must fulfill the requirements listed in below table. Table 19. PCB trace requirements Pin name PCB trace requirement TX_HB_OUT 50 Ω transmission line TX_LB_OUT 50 Ω transmission line VDD_TRX2 Maximum trace length until all three traces are joined < 1mm. All three traces must be matched Maximum trace/via distance to decoupling capacitor < 1mm for the small decoupling capacitor, <5mm for the large decoupling capacitor. RX1_HB_IN 50 Ω transmission line RX1_LB_IN 50 Ω transmission line RX2_HB_IN 50 Ω transmission line RX2_LB_IN 50 Ω transmission line RO1_HB_IN 50 Ω transmission line RO1_LB_IN 50 Ω transmission line RO2_HB_IN 50 Ω transmission line VDD_RX1 Maximum trace/via distance to decoupling capacitor < 1mm for the small decoupling capacitor, <5mm for the large decoupling capacitor. VDD_RO1 Maximum trace/via distance to decoupling capacitor < 1mm for the small decoupling capacitor, <5mm for the large decoupling capacitor. VDD_RO2 Maximum trace/via distance to decoupling capacitor < 1mm for the small decoupling capacitor, <5mm for the large decoupling capacitor. VDD_BB1 Maximum trace/via distance to decoupling capacitor < 1mm for the small decoupling capacitor, <5mm for the large decoupling capacitor. VDD_BB2 Maximum trace/via distance to decoupling capacitor < 1mm for the small decoupling capacitor, <5mm for the large decoupling capacitor. XO Place crystal close to XI and XO ports. XI VDD_XO Maximum trace/via distance to decoupling capacitor < 1mm for the small decoupling capacitor, <5mm for the large decoupling capacitor. VDD_SYNTH Maximum trace/via distance to decoupling capacitor < 1mm for the small decoupling capacitor, <5mm for the large decoupling capacitor. VDD_160M_IO Maximum trace/via distance to decoupling capacitor < 1mm for the small decoupling capacitor, <5mm for the large decoupling capacitor. VDD_DIG_CORE Maximum trace/via distance to decoupling capacitor < 1mm for the small decoupling capacitor, <5mm for the large decoupling capacitor. VDD_DIG_IO Maximum trace/via distance to decoupling capacitor < 1mm for the small decoupling capacitor, <5mm for the large decoupling capacitor. Application RF112L0H Transceiver Data Sheet, Rev. A, 12/2020 44 Preliminary NXP Semiconductors Confidential Proprietary |
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