Texas Instruments CC1101 User Manual

CC1101
SWRS061H Page 19 of 98
4.6 Frequency Synthesizer Characteristics
T
A
= 25C, VDD = 3.0 V if nothing else is stated. All measurement results are obtained using the CC1101EM reference designs
([1] and [2]). Min figures are given using a 27 MHz crystal. Typ and max figures are given using a 26 MHz crystal.
Table 15: Frequency Synthesizer Parameters
4.7 Analog Temperature Sensor
T
A
= 25C, VDD = 3.0 V if nothing else is stated. All measurement results obtained using the CC1101EM reference designs ([1]
and [2]). Note that it is necessary to write 0xBF to the PTEST register to use the analog temperature sensor in the IDLE state.
Table 16: Analog Temperature Sensor Parameters
Parameter
Min
Typ
Max
Unit
Condition/Note
Programmed frequency
resolution
397
F
XOSC
/
2
16
412
Hz
26-27 MHz crystal. The resolution (in Hz) is equal
for all frequency bands
Synthesizer frequency
tolerance
±40
ppm
Given by crystal used. Required accuracy
(including temperature and aging) depends on
frequency band and channel bandwidth / spacing
RF carrier phase noise
–92
dBc/Hz
@ 50 kHz offset from carrier
RF carrier phase noise
–92
dBc/Hz
@ 100 kHz offset from carrier
RF carrier phase noise
–92
dBc/Hz
@ 200 kHz offset from carrier
RF carrier phase noise
–98
dBc/Hz
@ 500 kHz offset from carrier
RF carrier phase noise
–107
dBc/Hz
@ 1 MHz offset from carrier
RF carrier phase noise
–113
dBc/Hz
@ 2 MHz offset from carrier
RF carrier phase noise
–119
dBc/Hz
@ 5 MHz offset from carrier
RF carrier phase noise
–129
dBc/Hz
@ 10 MHz offset from carrier
PLL turn-on / hop time
( See Table 34)
72
75
75
s
Time from leaving the IDLE state until arriving in
the RX, FSTXON or TX state, when not
performing calibration. Crystal oscillator running.
PLL RX/TX settling time
( See Table 34)
29
30
30
s
Settling time for the 1·IF frequency step from RX
to TX
PLL TX/RX settling time
( See Table 34)
30
31
31
s
Settling time for the 1·IF frequency step from TX
to RX. 250 kbps data rate.
PLL calibration time
(See Table 35)
685
712
724
s
Calibration can be initiated manually or
automatically before entering or after leaving
RX/TX
Parameter
Min
Typ
Max
Unit
Condition/Note
Output voltage at –40C
0.651
V
Output voltage at 0C
0.747
V
Output voltage at +40C
0.847
V
Output voltage at +80C
0.945
V
Temperature coefficient
2.47
mV/C
Fitted from –20 C to +80 C
Error in calculated
temperature, calibrated
-2
*
0
2
*
C
From –20 C to +80 C when using 2.47 mV / C, after
1-point calibration at room temperature
*
The indicated minimum and maximum error with 1-
point calibration is based on simulated values for
typical process parameters
Current consumption
increase when enabled
0.3
mA

Texas Instruments CC1101 Specifications

General

Brand	Texas Instruments
Model	CC1101
Category	Transceiver
Language	English