ZHCSJU4I November 2006 – September 2018 CC1020
PRODUCTION DATA.
If calibration has been performed the PLL turn-on time is the time needed for the PLL to lock to the desired frequency when going from power down mode (with the crystal oscillator running) to TX or RX mode. The PLL turn-on time depends on the PLL loop filter bandwidth. Table 5-12 gives the PLL turn-on time for different PLL loop filter bandwidths.
C6
[nF] |
C7
[pF] |
C8
[pF] |
R2
[kΩ] |
R3
[kΩ] |
PLL TURN-ON TIME
[µs] |
COMMENT |
---|---|---|---|---|---|---|
220 | 8200 | 2200 | 1.5 | 4.7 | 3200 | Up to 4.8 kBaud data rate,
12.5 kHz channel spacing |
100 | 3900 | 1000 | 2.2 | 6.8 | 2500 | Up to 4.8 kBaud data rate,
25 kHz channel spacing |
56 | 2200 | 560 | 3.3 | 10 | 1400 | Up to 9.6 kBaud data rate,
50 kHz channel spacing |
15 | 560 | 150 | 5.6 | 18 | 1300 | Up to 19.2 kBaud data rate,
100 kHz channel spacing |
3.9 | 120 | 33 | 12 | 39 | 1080 | Up to 38.4 kBaud data rate,
150 kHz channel spacing |
1.0 | 27 | 3.3 | 27 | 82 | 950 | Up to 76.8 kBaud data rate,
200 kHz channel spacing |
0.2 | 1.5 | — | 47 | 150 | 700 | Up to 153.6 kBaud data rate,
500 kHz channel spacing |