Atmel Xplained Pro Evaluation Kit ATSAM4E-XPRO ATSAM4E-XPRO データシート

1451

SAM4E [DATASHEET]

Atmel-11157D-ATARM-SAM4E16-SAM4E8-Datasheet_12-Jun-14

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 = 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

T

spread at

ambient temperature (±15%).

Notes:

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, gain error in single ended mode with Gain=1.

Voltage Range

The Analog Comparator is supplied by 
VDDIN

1.62

3.3

3.6

V

Input Voltage Range

—

GND + 0.2

—

V

VDDIN

 - 0.2

V

Input Offset Voltage

—

—

—

20

mV

Current Consumption

On VDDIN

Low Power Option (ISEL = 0)

High Speed Option (ISEL = 1)

—

—

—

—

25

170

µA

Hysteresis

HYST = 0x01 or 0x10

HYST = 0x11

—

—

15

30

50

90

mV

Settling Time

Given for overdrive > 100 mV

Low Power Option

High Speed Option

—

—

—

—

1

0.1

µs

V

T

Output Voltage

T° = 27° C

—

1.44

—

V

ΔV

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

After TSON = 1 

—

5

10

µs

I

VDDCORE

Current Consumption

50

70

80

µA