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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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CC1021-RTR1 датащи(PDF) 44 Page - Texas Instruments |
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CC1021-RTR1 датащи(HTML) 44 Page - Texas Instruments |
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44 / 91 page  Not Recommended for New Designs NRND CC1021 SWRS045D – JANUARY 2006 – REVISED JANUARY 2015 www.ti.com Figure 5-25. Typical Optimum PA Load Impedance, 868/915 MHz. The frequency is swept from 300 MHz to 2800 MHz. Values are listed in Table 5-10 Table 5-10. Impedances at the First 3 Harmonics (868/915 MHz Matching Network) FREQUENCY REAL IMAGINARY (MHz) (Ohms) (Ohms) 868 15 24 915 20 35 1736 1.5 18 1830 1.7 22 2604 3.2 44 2745 3.6 45 5.12 Frequency Synthesizer 5.12.1 VCO, Charge Pump, and PLL Loop Filter The VCO is completely integrated and operates in the 1608 to 1880 MHz range. A frequency divider is used to get a frequency in the UHF range (402 to 470 and 804 to 960 MHz). The BANDSELECT bit in the ANALOG register selects the frequency band. The VCO frequency is given by Equation 24. 44 Detailed Description Copyright © 2006–2015, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Links: CC1021 |
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