CC1020-1070DK-433 データシートの表示（PDF） - Unspecified
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CC1020-1070DK-433 Datasheet PDF : 92 Pages
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CC1021
4.6. Frequency Synthesizer Section
Parameter
Min Typ Max Unit
Condition / Note
Phase noise, 402 ñ 470 MHz
-79
-80
-87
-100
-105
Phase noise, 804 ñ 940 MHz
-73
-74
-81
-94
-111
PLL loop filter bandwidth
Loop filter 2, up to 19.2 kBaud
Loop filter 3, up to 38.4 kBaud
PLL lock time (RX / TX turn time)
Loop filter 2, up to 19.2 kBaud
Loop filter 3, up to 38.4 kBaud
Loop filter 5, up to 153.6 kBaud
PLL turn-on time. From power down
mode with crystal oscillator running.
Loop filter 2, up to 19.2 kBaud
Loop filter 3, up to 38.4 kBaud
Loop filter 5, up to 153.6 kBaud
15
30.5
140
75
14
1300
1080
700
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
Unmodulated carrier
At 12.5 kHz offset from carrier
At 25 kHz offset from carrier
At 50 kHz offset from carrier
At 100 kHz offset from carrier
At 1 MHz offset from carrier
Measured using loop filter
components given in Table 13.
The phase noise will be higher for
larger PLL loop filter bandwidth.
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
Unmodulated carrier
At 12.5 kHz offset from carrier
At 25 kHz offset from carrier
At 50 kHz offset from carrier
At 100 kHz offset from carrier
At 1 MHz offset from carrier
Measured using loop filter
components given in Table 13.
The phase noise will be higher for
larger PLL loop filter bandwidth.
After PLL and VCO calibration.
The PLL loop bandwidth is
kHz programmable.
kHz See Table 25 on page 52 for loop
filter component values.
307.2 kHz frequency step to RF
us frequency within ±10 kHz, ±15
kHz, ±50 kHz settling accuracy
us for loop filter 2, 3 and 5
respectively. Depends on loop
us filter component values and
PLL_BW register setting. See
Table 26 on page 53 for more
details.
Time from writing to registers to
RF frequency within ±10 kHz, ±15
us kHz, ±50 kHz settling accuracy
for loop filter 2, 3 and 5
us respectively. Depends on loop
filter component values and
us PLL_BW register setting. See
Table 25 on page 53 for more
details.
Table 8. Frequency synthesizer parameters
SWRS045
Page 13 of 91
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