nRF2401的PCB设计指南

APPLICATION NOTE Nordic VLSI ASA - Vestre Rosten 81, N-7075 Tiller, Norway - Phone +47 72 89 89 00 - Fax +47 72 89 89 89 Revision: 1.0 3DJH���RI��� March 2003 nRF2401 RF layouts ��� *(1(5$/ Gerber files for differential and single end RF I/O layouts have been made for Nordic VLSI’s Q5)���� Single Chip 2.4 GHz RF Transceiver [1]. The Gerber files are compressed into the Zip archive format, and can be downloaded for free from the Nordic VLSI ASA web site: http://www.nvlsi.no. The Zip archive files includes a file named UHDGPH�ZUL that must be read before importing the Gerber files into PCB editors. All described layouts should be manufactured on standard 1.6mm double-sided FR4 printed circuit board (PCB). ��� 5)�/$<2876�)25�Q5)���� The RF layouts include all necessary circuitry to design the radio part of a short-range communication system based on Q5)����. All digital control signals are available at the perimeter of the RF layout to be connected to the digital part of customer applications. Supply voltage and GND are also available at the perimeter of the RF layout. The supply voltage for the RF part of the application circuit should be filtered separately from the supply voltages of any digital circuitry. Star routing is strictly recommended from the voltage supply source to the RF and digital or other parts of the application circuitry. ����� 'LIIHUHQWLDO�FRQQHFWLRQ�WR�DQWHQQD Figure 1 shows the schematic for RF layouts with differential connection to the antenna. PCB layouts have been made for 0603 and 0402 size passive external components. 0402 components gives a 15% reduction in PCB area compared to 0603 in the RF part alone. The PCB layouts are shown in Figure 2 and Figure 3. The Zip archive filenames are: 0603 passive components:�3&%BQ5)����BGLIIB������B��]LS. 0402 passive components:�3&%BQ5)����BGLIIB������B��]LS. The recommended external components are listed in Table 1. Q$1����� APPLICATION NOTE Q5)�����5)�OD\RXW Nordic VLSI ASA - Vestre Rosten 81, N-7075 Tiller, Norway - Phone +47 72 89 89 00 - Fax +47 72 89 89 89 Revision: 1.0 3DJH���RI��� March 2003 CE1 V D D 24 VSS 18 VDD 17 VSS_PA 16 DR22 CLK23 DOUT24 CS5 DR16 CL K 1 7 D A TA 8 D V D D 9 V SS 10 X C2 11 X C1 12 ANT2 15 ANT1 14 VDD_PA 13 IR EF 19 V SS 20 V D D 21 V SS 22 PW R_ U P 23 nRF2401 U1 nRF2401 QFN24/5X5 C2 15pF C5 1nF C6 10nF R2 22K C4 2.2nF xxx xxx C1 15pF R1 1M X1 16 MHz C3 22pF C7 33nF ANT2 PWR_UP CE DR2 CLK2 DOUT2 CS DR1 CLK1 DATA ANT1 VDD_PA VDD Figure 1. Q5)���� schematic for RF layouts with differential antenna connection Top silk screen No components in bottom layer Top view Bottom view Figure 2 Q5)���� RF layout with differential antenna connection and 0603 size passive components APPLICATION NOTE Q5)�����5)�OD\RXW Nordic VLSI ASA - Vestre Rosten 81, N-7075 Tiller, Norway - Phone +47 72 89 89 00 - Fax +47 72 89 89 89 Revision: 1.0 3DJH���RI��� March 2003 Top silk screen No components in bottom layer Top view Bottom view Figure 3 Q5)���� RF layout with differential antenna connection and 0402 size passive components &RPSRQHQW 'HVFULSWLRQ 6L]H 9DOXH 7ROHUDQFH 8QLWV C1 Capacitor ceramic, 50V, NPO 0603 / 0402 15 ±5% pF C2 Capacitor ceramic, 50V, NPO 0603 / 0402 15 ±5% pF C3 Capacitor ceramic, 50V, NPO 0603 / 0402 22 ±5% pF C4 Capacitor ceramic, 50V, X7R 0603 / 0402 2.2 ±10% nF C5 Capacitor ceramic, 50V, X7R 0603 / 0402 1.0 ±10% nF C6 Capacitor ceramic, 50V, X7R 0603 / 0402 10 ±10% nF C7 Capacitor ceramic, 50V, X7R 0603 / 0402 33 ±10% nF R1 Resistor 0603 / 0402 1.0 ±1% Mohm R2 Resistor 0603 / 0402 22 ±1% Kohm U1 Q5)���� transceiver QFN24 / 5x5 nRF2401 X1 Crystal, Cl = 9pF, ESR < 50 ohm LxWxH = 4.0x2.5x0.8 161) +/- 30 ppm MHz Table 1. Q5)���� recommended external components 1) Q5)���� can operate at several crystal frequencies, please refer to [1] APPLICATION NOTE Q5)�����5)�OD\RXW Nordic VLSI ASA - Vestre Rosten 81, N-7075 Tiller, Norway - Phone +47 72 89 89 00 - Fax +47 72 89 89 89 Revision: 1.0 3DJH���RI��� March 2003 ����� 6LQJOH�HQG�FRQQHFWLRQ�WR���:�DQWHQQD In Figure 4, the schematic for RF layouts with a single end connection for 50W antennas is presented. This is done by using a differential to single ended matching network, and as for the differential layouts this has been done for 0603 and 0402 size passive components (Figure 5 and Figure 6). The reduction of PCB area here is 22%. The Zip archive file names are: 0603 passive components:�3&%BQ5)����BVLQJOHBQHWZB������B��]LS. 0402 passive components:�3&%BQ5)����BVLQJOHBQHWZB������B��]LS. The recommended external components are as given in Table 1, with addition of the components in the differential to single end matching network. The complete list is given in Table 2. APPLICATION NOTE Q5)�����5)�OD\RXW Nordic VLSI ASA - Vestre Rosten 81, N-7075 Tiller, Norway - Phone +47 72 89 89 00 - Fax +47 72 89 89 89 Revision: 1.0 3DJH���RI��� March 2003 CE1 V D D 24 VSS 18 VDD 17 VSS_PA 16 DR22 CLK23 DOUT24 CS5 DR16 CL K 1 7 D A T A 8 D V D D 9 V SS 10 X C2 11 X C1 12 ANT2 15 ANT1 14 VDD_PA 13 IR EF 19 V SS 20 V D D 21 V SS 22 PW R _U P 23 nRF2401 U1 nRF2401 QFN24/5X5 C2 15pF L1 3.6nH L2 22nH C8 1.0pF C9 1.0pF C5 1nF C6 10nF R2 22K C4 2.2nF xxx C1 15pF R1 1M X1 16 MHz C3 22pF C7 33nF RF I/O PWR_UP CE DR2 CLK2 DOUT2 CS DR1 CLK1 DATA VDD Figure 4 Q5)���� schematic for RF layouts with single end 50W antenna connection Top silk screen No components in bottom layer Top view Bottom view Figure 5 Q5)���� RF layout with single ended connection to 50W antenna and 0603 size passive components APPLICATION NOTE Q5)�����5)�OD\RXW Nordic VLSI ASA - Vestre Rosten 81, N-7075 Tiller, Norway - Phone +47 72 89 89 00 - Fax +47 72 89 89 89 Revision: 1.0 3DJH���RI��� March 2003 Top silk screen No components in bottom layer Top view Bottom view Figure 6 Q5)���� RF layout with single ended connection to 50W antenna and 0402 size passive components &RPSRQHQW 'HVFULSWLRQ 6L]H 9DOXH 7ROHUDQFH 8QLWV C1 Capacitor ceramic, 50V, NPO 0603 / 0402 15 ±5% pF C2 Capacitor ceramic, 50V, NPO 0603 / 0402 15 ±5% pF C3 Capacitor ceramic, 50V, NPO 0603 / 0402 22 ±5% pF C4 Capacitor ceramic, 50V, X7R 0603 / 0402 2.2 ±10% nF C5 Capacitor ceramic, 50V, X7R 0603 / 0402 1.0 ±10% nF C6 Capacitor ceramic, 50V, X7R 0603 / 0402 10 ±10% nF C7 Capacitor ceramic, 50V, X7R 0603 / 0402 33 ±10% nF R1 Resistor 0603 / 0402 1.0 ±1% Mohm R2 Resistor 0603 / 0402 22 ±1% Kohm U1 Q5)���� transceiver QFN24 / 5x5 nRF2401 X1 Crystal, Cl = 9pF, ESR < 50 ohm LxWxH = 4.0x2.5x0.8 161) +/- 30 ppm MHz L1 Inductor, wire wound 2) 0603 / 0402 3.6 ± 5% nH L2 Inductor, wire wound 2) 0603 / 0402 22 ± 5% nH C8 Ceramic capacitor, 50V, NP0 0603 / 0402 1.0 ± 0.25 pF pF C9 Ceramic capacitor, 50V, NP0 0603 / 0402 1.0 ± 0.25 pF pF Table 2 Recommended components in Q5)�����antenna matching network 1) Q5)���� can operate at several crystal frequencies, please refer to [1] 2) Wire wound inductors are recommended, other can be used if their self resonant frequency (SFR) is > 2.5 GHz APPLICATION NOTE Q5)�����5)�OD\RXW Nordic VLSI ASA - Vestre Rosten 81, N-7075 Tiller, Norway - Phone +47 72 89 89 00 - Fax +47 72 89 89 89 Revision: 1.0 3DJH���RI��� March 2003 ��� �5()(5(1&(6 [1] Product Specification�Q5)����, “Single chip 2.4 GHz transceiver”, Nordic VLSI ASA. APPLICATION NOTE Q5)�����5)�OD\RXW Nordic VLSI ASA - Vestre Rosten 81, N-7075 Tiller, Norway - Phone +47 72 89 89 00 - Fax +47 72 89 89 89 Revision: 1.0 3DJH���RI��� March 2003 /,$%,/,7<�',6&/$,0(5 Nordic VLSI ASA reserves the right to make changes without further notice to the product to improve reliability, function or design. Nordic VLSI does not assume any liability arising out of the application or use of any product or circuits described herein. /,)(�6833257�$33/,&$7,216 These products are not designed for use in life support appliances, devices, or systems where malfunction of these products can reasonably be expected to result in personal injury. Nordic VLSI ASA customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Nordic VLSI ASA for any damages resulting from such improper use or sale. Application Note. Revision Date : 11.03.2003. Application Note order code: 110303-nAN24-01 All rights reserved ®. Reproduction in whole or in part is prohibited without the prior written permission of the copyright holder. APPLICATION NOTE Q5)�����5)�OD\RXW Nordic VLSI ASA - Vestre Rosten 81, N-7075 Tiller, Norway - Phone +47 72 89 89 00 - Fax +47 72 89 89 89 Revision: 1.0 3DJH���RI��� March 2003 <285�127(6 APPLICATION NOTE Q5)�����5)�OD\RXW Revision: 1.0 3DJH����RI��� March 2003 1RUGLF�9/6,����:RUOG�:LGH�'LVWULEXWRUV )RU�