Atmel SAM4S Xplained Pro Starter and Evaluation Kit ATSAM4S-XPRO ATSAM4S-XPRO Scheda Tecnica
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ATSAM4S-XPRO
SAM4S Series [DATASHEET]
Atmel-11100G-ATARM-SAM4S-Datasheet_27-May-14
1164
44.10 Analog Comparator Characteristics
44.11 Temperature Sensor
The temperature sensor is connected to channel 15 of the ADC.
The temperature sensor provides an output voltage (V
The temperature sensor provides an output voltage (V
T
) that is proportional to absolute temperature (PTAT). The
V
T
output voltage linearly varies with a temperature slope dV
T
/dT = 4.7 mV/°C.
The V
T
voltage equals 1.44V at 27°C, with a ±60 mV accuracy. The V
T
slope versus temperature dV
T
/dT = 4.7
mV/°C only shows a ±7% slight variation over process, mismatch and supply voltage.
The user needs to calibrate it (offset calibration) at ambient temperature in order to get rid of the V
The user needs to calibrate it (offset calibration) at ambient temperature in order to get rid of the V
T
spread at
ambient temperature (±15%).
Note:
1. The value of TS only (the value does not take into account the ADC offset/gain/errors)
2. The temperature accuracy takes into account the ADC offset error and gain error in single-ended mode with Gain=1.
2. The temperature accuracy takes into account the ADC offset error and gain error in single-ended mode with Gain=1.
Table 44-59.
Analog Comparator Characteristics
Parameter
Conditions
Min
Typ
Max
Units
Voltage Range
Analog comparator is supplied by VDDIN
1.62
3.3
3.6
V
Input Voltage Range
GND + 0.2
—
VDDIN - 0.2
V
Input Offset Voltage
—
—
20
mV
Current Consumption
On VDDIN
Low-Power Option (ISEL = 0)
High-Speed Option (ISEL = 1)
Low-Power Option (ISEL = 0)
High-Speed Option (ISEL = 1)
—
—
25
170
µA
Hysteresis
HYST = 0x01 or 0x10
HYST = 0x11
HYST = 0x11
—
15
30
30
50
90
90
mV
Settling Time
Given for overdrive > 100 mV
Low-power option
High-speed option
Low-power option
High-speed option
—
—
1
0.1
µs
Table 44-60.
Temperature Sensor Characteristics
Symbol
Parameter
Conditions
Min
Typ
Max
Units
V
T
Output Voltage
T° = 27° C
1.44
—
V
Δ
V
T
Output Voltage Accuracy
T° = 27° C
-60
—
+60
mV
dV
T
/dT
Temperature Sensitivity (Slope
Voltage versus Temperature
—
4.7
—
mV/°C
Slope Accuracy
Over temperature range [-40°C /
+105°C]
-7
—
+7
%
Temperature Accuracy
After offset calibration
over temperature range [-40°C / +105°C]
-6
—
+6
°C
After offset calibration
over temperature range [0°C / +80°C]
-5
—
+5
°C
t
START-UP
Startup Time
—
5
10
µs
I
VDDCORE
Current Consumption
50
70
80
µA