RF112 datasheet(43/45 Pages) NXP

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6.2 PCB design

To achieve the required performance the PCB design must fulfill the requirements listed

in below table.

Table 15. 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.

Place crystal close to XI and XO ports.

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

RF112 Transceiver Data Sheet, Rev. 1 Draft B, 05/2024

NXP Semiconductors

RF112 Datasheet(PDF) 43 Page - NXP Semiconductors

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