CC1125_16 Datasheet, PDF (20/40 Pages) Texas Instruments – Ultra-High Performance RF Narrowband Transceiver

CC1125
SWRS120E – JUNE 2011 – REVISED OCTOBER 2014
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4.17 Low Speed RC Oscillator
T_A = 25°C, VDD = 3.0 V if nothing else stated
PARAMETER
MIN TYP
Frequency
32/40
Frequency accuracy after calibration
±0.1
Initial calibration time
1.6
MAX
UNIT
kHz
%
ms
CONDITION
After calibration (calibrated against the high-
speed XOSC)
Relative to frequency reference (for example,
32-MHz crystal or TCXO)
4.18 I/O and Reset
T_A = 25°C, VDD = 3.0 V if nothing else stated
PARAMETER
MIN
TYP
MAX
UNIT CONDITION
Logic input high voltage
0.8×VDD
V
Logic input low voltage
0.2×VDD
V
Logic output high voltage
Logic output low voltage
0.8×VDD
0.2×VDD
V
At 4-mA output load or less
V
Power-on reset threshold
1.3
V Voltage on DVDD pin
4.19 Temperature Sensor
T_A = 25°C, VDD = 3.0 V if nothing else stated
PARAMETER
MIN TYP
Temperature sensor range
–40
Temperature coefficient
2.66
Typical output voltage
794
VDD coefficient
1.17
MAX
85
UNIT
°C
mV / °C
mV
mV / V
CONDITION
Change in sensor output voltage versus
change in temperature
Typical sensor output voltage at T_A = 25°C,
VDD = 3.0 V
Change in sensor output voltage versus
change in VDD
The CC1125 device can be configured to provide a voltage proportional to temperature on GPIO1. The
temperature can be estimated by measuring this voltage (see Section 4.19, Temperature Sensor). For more
information, see the temperature sensor design note (SWRA415).
20
Specifications
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