CC2510_15 Datasheet, PDF (18/245 Pages) Texas Instruments – Low-Power SoC (System-on-Chip) with MCU, Memory,2.4 GHz RF Transceiver, and USB Controller

CC2511F8 - Not Recommended for New Designs
CC2510Fx / CC2511Fx
6.7 High Speed RC Oscillator
T_A = 25°C, VDD = 3.0 V if nothing else is stated.
Parameter
Calibrated frequency²
Uncalibrated frequency
accuracy
Calibrated frequency
accuracy
Start-up time
Temperature coefficient
Min Typ
12
13
±15
Max
Unit
13.5
MHz
%
±1
%
10
−325
µs
ppm/°C
Supply voltage
coefficient
Calibration time
28
ppm/V
65
µs
Condition/Note
Calibrated HS RCOSC frequency is fXOSC / 2
Frequency drift when temperature changes after
calibration
Frequency drift when supply voltage changes after
calibration
The HS RCOSC will be calibrated once when the high
speed crystal oscillator is selected as system clock
source (CLKCON.OSC is set to 0), and also when the
system wakes up from PM{1 - 3} if CLKCON.OSC was
set to 0 when entering PM{1 - 3}. See 12.1.5.1 for
details).
Table 15: High Speed RC Oscillator Parameters
6.8 Frequency Synthesizer Characteristics
T_A = 25°C, VDD = 3.0 V if nothing else stated. All measurement results are obtained using the
CC2510EM reference designs ([1]).
Parameter
Min Typ
Max
Unit Condition/Note
Programmed frequency 366 397
412
resolution³
366 366
366
Hz
CC2510Fx
CC2511Fx
Frequency resolution = fRef/ 2¹⁶
Synthesizer frequency
±40
tolerance
ppm Given by crystal used. Required accuracy (including
temperature and aging) depends on frequency band and
channel bandwidth / spacing.
RF carrier phase noise
−77
dBc/Hz @ 50 kHz offset from carrier
RF carrier phase noise
−77
dBc/Hz @ 100 kHz offset from carrier
RF carrier phase noise
−78
dBc/Hz @ 200 kHz offset from carrier
RF carrier phase noise
−88
dBc/Hz @ 500 kHz offset from carrier
RF carrier phase noise
−98
dBc/Hz @ 1 MHz offset from carrier
RF carrier phase noise
−107
dBc/Hz @ 2 MHz offset from carrier
RF carrier phase noise
−116
dBc/Hz @ 5 MHz offset from carrier
RF carrier phase noise
−25
dBc/Hz @ 10 MHz offset from carrier
3 _{fRef = fXOSC for CC2510Fx and fRef = fXOSC /2 for CC2511Fx}
For CC2510Fx Min figures are given using f_XOSC = 24 MHz. Typ figures are given using f_XOSC = 26 MHz,
and Max figures are given using f_XOSC = 27 MHz. For CC2511Fx, f_XOSC = 48 MHz
SWRS055G
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