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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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CC1020-RTR1 데이터시트(PDF) 50 Page - Texas Instruments |
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CC1020-RTR1 데이터시트(HTML) 50 Page - Texas Instruments |
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50 / 95 page  CC1020 SWRS046H – NOVEMBER 2006 – REVISED MARCH 2015 www.ti.com Table 5-12. Typical PLL Turn-on Time to Within ±10% of Channel Spacing for Different Loop Filter Bandwidths C6 C7 C8 R2 R3 PLL TURN-ON TIME COMMENT [nF] [pF] [pF] [k Ω] [k Ω] [µs] Up to 4.8 kBaud data rate, 220 8200 2200 1.5 4.7 3200 12.5 kHz channel spacing Up to 4.8 kBaud data 100 3900 1000 2.2 6.8 2500 rate, 25 kHz channel spacing Up to 9.6 kBaud data 56 2200 560 3.3 10 1400 rate, 50 kHz channel spacing Up to 19.2 kBaud data 15 560 150 5.6 18 1300 rate, 100 kHz channel spacing Up to 38.4 kBaud data 3.9 120 33 12 39 1080 rate, 150 kHz channel spacing Up to 76.8 kBaud data 1.0 27 3.3 27 82 950 rate, 200 kHz channel spacing Up to 153.6 kBaud data 0.2 1.5 — 47 150 700 rate, 500 kHz channel spacing 5.12.4 PLL Lock Time Versus Loop Filter Bandwidth If calibration has been performed the PLL lock time is the time needed for the PLL to lock to the desired frequency when going from RX to TX mode or vice versa. The PLL lock time depends on the PLL loop filter bandwidth. Table 5-13 gives the PLL lock time for different PLL loop filter bandwidths. Table 5-13. Typical PLL Lock Time to Within ±10% of Channel Spacing for Different Loop Filter Bandwidths(1) PLL LOCK TIME [µs] C6 C7 C8 R2 R3 Comment [nF] [pF] [pF] [k Ω] [k Ω] 1 2 3 Up to 4.8 kBaud data rate, 12.5 kHz 220 8200 2200 1.5 4.7 900 180 1300 channel spacing Up to 4.8 kBaud data rate, 25 kHz 100 3900 1000 2.2 6.8 640 270 830 channel spacing Up to 9.6 kBaud data rate, 50 kHz 56 2200 560 3.3 10 400 140 490 channel spacing Up to 19.2 kBaud data rate, 100 kHz 15 560 150 5.6 18 140 70 230 channel spacing Up to 38.4 kBaud data rate, 150 kHz 3.9 120 33 12 39 75 50 180 channel spacing Up to 76.8 kBaud data rate, 200 kHz 1.0 27 3.3 27 82 30 15 55 channel spacing Up to 153.6 kBaud data rate, 500 0.2 1.5 — 47 150 14 14 28 kHz channel spacing (1) 1) 307.2 kHz step, 2) 1 channel step, 3) 1 MHz step 50 Detailed Description Copyright © 2006–2015, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Links: CC1020 |
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