Texas Instruments CC2500 User Manual

CC2500
S
WRS040
C
Page
14
of
89
4.7
Analog Temperature Sensor
The characteristics of the analog temperature sensor
at 3.0 V supply voltage
are listed in
Ta
ble
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.
654
V
Output voltage at 0

C
0.750
V
Output voltage at +40

C
0.848
V
Output voltage at +80

C
0.946
V
Temperature coefficient
2.43
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 2.43
mV /

C,
after 1
-
point calibration at room temperature
*
The indicated minimum and maximum error with 1
-
point calibration is based on
measured
values for
typical process parameters
Current consumption
increase when enabled
0.3
mA
Ta
ble
10
: Analog
T
emperature
S
ensor
P
arameters
4.8
DC Characteristics
Tc = 25

C if nothing else stated.
Digital Inputs/Outputs
Min
Max
Unit
Condition
/Note
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
N
/
A
–
50
n
A
Input equals 0
V
Logic "1" input current
N
/
A
50
n
A
Input equals VDD
Table
11
: DC
C
haracteristics
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
39
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
R
eset
R
equirements

Texas Instruments CC2500 Specifications

General

Brand	Texas Instruments
Model	CC2500
Category	Transceiver
Language	English