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CC2500-RTR1 数据表(PDF) 12 Page - Texas Instruments

部件名 CC2500-RTR1
功能描述  Single Chip Low Cost Low Power RF Transceiver
PDF  84 Pages
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制造商  TI [Texas Instruments]
网页  http://www.ti.com
标志 TI - Texas Instruments

CC2500-RTR1 数据表(HTML) 12 Page - Texas Instruments

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CC2500
PRELIMINARY Data Sheet (Rev.1.2)
SWRS040A
Page 12 of 83
4.7
Analog Temperature Sensor
The characteristics of the analog temperature sensor are listed in Table 10 below. Note that it is
necessary to write 0xBF to the PTEST register to use the analog temperature sensor in the IDLE
state.
Parameter
Min
Typ
Max
Unit
Condition/Note
Output voltage at –40
°C
0.660
V
Output voltage at 0
°C
0.755
V
Output voltage at +40
°C
0.859
V
Output voltage at +80
°C
0.958
V
Temperature coefficient
2.54
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 2.54 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
Table 10: Analog temperature sensor parameters
4.8
DC Characteristics
Tc = 25
°C if nothing else stated.
Digital Inputs/Outputs
Min
Max
Unit
Condition
Logic "0" input voltage
0
0.7
V
Logic "1" input voltage
VDD-0.7
VDD
V
Logic "0" output voltage
0
0.5
V
For up to 4 mA output current
Logic "1" output voltage
VDD-0.3
VDD
V
For up to 4 mA output current
Logic "0" input current
NA
–50
nA
Input equals 0 V
Logic "1" input current
NA
50
nA
Input equals VDD
Table 11: DC characteristics
4.9
Power-On Reset
When the power supply complies with the requirements in Table 12 below, proper Power-On-
Reset functionality is guaranteed. Otherwise, the chip should be assumed to have unknown state
until transmitting an SRES strobe over the SPI interface. See Section 19.1 on page 36 for further
details.
Parameter
Min
Typ
Max
Unit
Condition/Note
Power ramp-up time
5
ms
From 0 V until reaching 1.8 V
Power off time
1
ms
Minimum time between power-on and power-off.
Table 12: Power-on reset requirements



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