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CC400-RTR2 数据表(PDF) 18 Page - Texas Instruments |
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CC400-RTR2 数据表(HTML) 18 Page - Texas Instruments |
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18 / 31 page ![]() CC400 SWRS050 Page 18 of 32 Item CL= 12 pF CL= 16 pF CL= 22 pF C151 15 pF 22 pF 33 pF C161 15 pF 22 pF 33 pF Table 14: Crystal oscillator component values. 22. Loop filter The loop filter is a lead-lag type of filter. The calculations for the loop filter components are done in the SmartRF Studio software. See Application Note AN012 “VCO fine tuning for CC400 and CC900” for more detailed information. A spreadsheet, CC400_CC900_Loop_Filter_1_0.xls, is available from Chipcon that will calculate the loop filter components for a desired bandwidth with different constants than the default values in SmartRF Studio. 23. Blocking -10 0 10 20 30 40 50 60 70 80 90 420 425 430 435 440 445 450 Fre quency FM CW Requirement IF =60 kHz, Separation = 20 kHz. Data rate = 1.2 kbps. Interfering signal is CW (no modulation) or FM modulation. -10 0 10 20 30 40 50 60 70 80 420 425 430 435 440 445 450 Fre quency FM CW Requirement IF =200 kHz, Separation = 40 kHz. Data rate = 1.2 kbps. Interfering signal is CW (no modulation) or FM modulation. -10 0 10 20 30 40 50 60 70 420 425 430 435 440 445 450 Frequency FM CW Requirement IF =455 kHz external, Separation = 12 kHz. Data rate = 1.2 kbps. Interfering signal is CW (no modulation) or FM modulation. |
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