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CC400-RTR2 数据表(PDF) 16 Page - Texas Instruments |
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CC400-RTR2 数据表(HTML) 16 Page - Texas Instruments |
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16 / 31 page ![]() CC400 SWRS050 Page 16 of 32 18. Output power The output power is controlled through several parameters in the configuration registers. Table 13 shows recommended settings for the different output powers. Register Output power Class E9:8 F1:0 C8,A7:6,D12:11 -5 A 00 00 01011 -4 AB 01 00 00100 -3 AB 01 01 00101 -2 AB 01 01 00110 -1 AB 01 01 00111 0 B 10 10 00011 1 B 10 10 00100 2 B 10 10 00101 3 B 10 10 00110 4 B 10 10 00111 5 B 10 10 01000 6 B 10 10 01001 7 B 10 10 01010 8 C 11 11 01001 9 C 11 11 01010 10 C 11 11 01100 11 C 11 11 01111 12 C 11 11 10001 13 C 11 11 10101 14 C 11 11 11011 Table 13: Output power settings. 19. Input / Output Matching Four passive external components combined with the internal T/R switch circuitry ensures match in both RX and TX mode. The matching network for 433.92 MHz is shown in Figure 9. The component values may have to be optimised to include layout parasitics. Matching components for other frequencies can be found using the configuration software. See also Application Note AN013 “Matching CC400 CC900” for more details. L61 C61 RF_IN RF_OUT AVDD TO ANTENNA C51 L51 CC400 C51=220 pF C61=12 pF L51=39 nH L61=6.8 nH f = 433.92 MHz Figure 9: Input/output matching network. |
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