ATAB5811-8-B Microchip

Bill of Materials and Implementation of the Transceiver Base Station Board ATAB5811/12-x-B Transceiver The ATA5811/12 is part of Atmel s RF transceiver family dedicated to unlicensed fre- Base Station quency bands. This document describes the bill of materials (BOM) required to operate the Board ATA5811/12, allowing use of this RF transceiver in the popular ISM bands 315/433/868 MHz. ATAB5811-x-B/ Most of the components values are the same regardless of the frequency bands only ATAB5812-x-B the matching of the antenna and the quartz crystal should take into account the fre- quency that is targeted. This BOM relates to the implementation of our demo boards. The two-layer layout that Application Note is provided is recommended. Nevertheless, it is possible to use a different layout, which might require some minor change of values for optimal use. 1. Schematic and Layout The schematic of the demo board is illustrated in Figure 1-1 on page 2, and the layout is shown in Figure 1-2 on page 3, Figure 1-3 on page 3, Figure 1-4 on page 4 and Fig- ure 1-5 on page 4. 4947AWIRE08/06Figure 1-1. Schematic of the Transceiver Board X2 X1 1 1 C12 VREG Q1 Test2 GND C13 R2 37 24 CDEM XTAL1 DZ1 38 23 RX TX2 Test2 C14 C10 D-Zener 39 22 VSOut RXTX RX TX1 40 21 C11 PWR On DVCC ATA5811 ATA5812 41 20 T5 Test1 Test1 42 19 VAUX T4 VREG C9 43 18 VS1 T3 X3 C8 44 17 VS2 T2 1 45 16 C7 AVCC T1 46 15 RX ACTIVE NC(15) 47 14 NC(47) NC(14) 48 13 NC(48) NC(13) C16 C15 C17 L6 L7 R1 S2 BR1 BR2 L4 1 27 C6 S1 C1 RXTX C2 L3 8 4 BR4 C5 L2 L5 C3 L1 C4b C4 5 36 C18 X4 2 ATAB5811/12-x-B 4947AWIRE08/06 Q2 SAW Case GND OUTPUT INPUT OUTPUT GND INPUT GND OUTPUT GND INPUT GND Case GND RSSI VREG 1 36 NC(1) RSSI RSSI 2 35 RSSI NC(2) CS CS DEMOUT CS 3 34 DEMOut NC(3) DEMOut 4 33 SCK SCK RFIN SCK SDO 5 32 NC(5) SDI SDI TMDI SDISDI 6 31 SDO 433 N868 SDO TMDO 7 30 NC(7) CLK CLK 8 29 IRQ R PWR IRQ DEMOut 9 28 PWR H N Reset NRESET Test1 Test2 10 27 RFOut VSint IRQ 11 26 NC(11) NC(26) 12 25 NC(12) XTAL2