STM32L412RBT3PTR datasheet(155/192 Pages) STMICROELECTRONICS

155 / 192 page

DS12469 Rev 8

155/192

STM32L412xx

Electrical characteristics

164

6.3.21

Temperature sensor characteristics

Voltage noise

density

Normal mode

at 1 kHz, Output

loaded with 4 kΩ

-500

nV/√Hz

Low-power mode

at 1 kHz, Output

loaded with 20 kΩ

-600

Normal mode

at 10 kHz, Output

loaded with 4 kΩ

-180

Low-power mode

at 10 kHz, Output

loaded with 20 kΩ

-290

IDDA(OPAMP)(3)

OPAMP

consumption

from VDDA

Normal mode

no Load, quiescent

mode

120

260

µA

Low-power mode

100

1. Guaranteed by design, unless otherwise specified.

2. The temperature range is limited to 0 °C-125 °C when VDDA is below 2 V

3. Guaranteed by characterization results.

4. Mostly I/O leakage, when used in analog mode. Refer to Ilkg parameter in Table 69: I/O static characteristics.

5. R2 is the internal resistance between OPAMP output and OPAMP inverting input. R1 is the internal resistance between

OPAMP inverting input and ground. The PGA gain =1+R2/R1

Table 82. OPAMP characteristics(1) (continued)

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

Table 83. TS characteristics

Symbol

Parameter

Min

Typ

Max

Unit

TL(1)

VTS linearity with temperature

±1

±2

°C

Avg_Slope(2)

Average slope

2.3

2.5

2.7

mV/°C

V30

Voltage at 30°C (±5 °C)(3)

0.742

0.76

0.785

tSTART

(TS_BUF)(1)

Sensor Buffer Start-up time in continuous mode(4)

-8

µs

tSTART(1)

Start-up time when entering in continuous mode(4)

-70

120

µs

tS_temp(1)

ADC sampling time when reading the temperature

µs

IDD(TS)(1)

Temperature sensor consumption from VDD, when

selected by ADC

-4.7

µA

1. Guaranteed by design.

2. Guaranteed by characterization results.

3. Measured at VDDA = 3.0 V ±10 mV. The V30 ADC conversion result is stored in the TS_CAL1 byte. Refer to Table 8:

Temperature sensor calibration values.

Continuous mode means Run/Sleep modes, or temperature sensor enable in Low-power run/Low-power sleep modes.

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