Atmel ARM-Based Evaluation Kit for SAM4S16C, 32-Bit ARM® Cortex® Microcontroller ATSAM4S-WPIR-RD ATSAM4S-WPIR-RD Data Sheet

SAM4S Series [DATASHEET]

Atmel-11100G-ATARM-SAM4S-Datasheet_27-May-14

1164

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%).

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.

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)

—

—

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

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

After TSON = 1 

—

5

10

µs

I

VDDCORE

Current Consumption

50

70

80

µA