SAM3S_14 Datasheet, PDF (1034/1087 Pages) ATMEL Corporation – AT91SAM ARM-based Flash MCU

42.9 Analog Comparator Characteristics
Table 42-48. Analog Comparator Characteristics
Parameter
Conditions
Voltage Range
The Analog Comparator is supplied by
VDDIN
Input Voltage Range
Input Offset Voltage
Current Consumption
On VDDIN
Low Power Option (ISEL = 0)
High Speed Option (ISEL = 1)
Hysteresis
HYST = 0x00
HYST = 0x01 or 0x10
HYST = 0x11
Settling Time
Given for overdrive > 100 mV
Low Power Option
High Speed Option
Min
Typ
Max
Units
1.62
3.3
3.6
V
GND + 0.2
VDDIN - 0.2
V
2
20
mV
20
25
μA
107
170
0
16
50
mV
35
90
1
μs
0.1
42.10 Temperature Sensor
The temperature sensor is connected to Channel 15 of the ADC.
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 = 2.65 mV/°C.
The V_T voltage equals 0.8V at 27°C, with a ±15% accuracy. The V_T slope versus temperature dV_T/dT = 2.65 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 VT spread at ambient
temperature (+/-15%).
Table 42-49. Temperature Sensor Characteristics
Symbol Parameter
Conditions
V_T
ΔV_T
dV_T/dT
Output Voltage
Output Voltage Accuracy
Temperature Sensitivity (slope
voltage versus temperature
T° = 27° C
T° = 27° C
Slope accuracy
after offset calibration
Temperature accuracy
over temperature range [-40°C / +85°C]
after offset calibration
over temperature range [0°C / +80°C]
T_START-UP
Startup Time
Output Impedance
After TSON = 1
I_VDDCORE
Current Consumption
Min
Typ Max Units
0.800
V
-15
+15
%
2.65
mV/°C
-7
+7
%
-5
+5
°C
-3
+3
°C
20
40
μs
30
Ω
50
100
μA
SAM3S [DATASHEET] 11034
6500E–ATARM–11-Feb-13