STM32WBA62CGF6 datasheet(152/185 Pages) STMICROELECTRONICS

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Electrical characteristics

STM32WBA6xxx

152/185

DS14736 Rev 1

Figure 28. Typical connection diagram when using the ADC

with FT/TT pins featuring analog switch function

1. Refer to Table 83 for the values of RAIN and CADC.

2. Cparasitic represents the PCB capacitance (dependent on soldering and PCB layout quality) plus the pad

capacitance (refer to Table 75 for the value of the pad capacitance). A high Cparasitic value downgrades the

conversion accuracy. As a remedy, reduce fADC.

3. Refer to Table 75 for the values of Ilkg.

4. Refer to Figure 18, Figure 19, and Figure 20.

5.3.23

Temperature sensor characteristics

MSv67871V3

Sample-and-hold ADC converter

Converter

Cparasitic

(2)

Ilkg

(3)

CADC

VDDA

(4)

RAIN

(1)

VAIN

RADC

VREF+

(4)

VSSA

I/O

analog

switch

Sampling

switch with

multiplexing

VSS

Table 86. Temperature sensor characteristics

Symbol

Parameter

Min

Typ

Max

Unit

TL(1)(2)

VSENSE linearity with temperature

1.3

°C

Avg_Slope(3)

Average slope

2.5

3.0

mV/ °C

VSENSE30(4)

VSENSE at VREF+ = VDDA = 3.0 V (±10 mV) and 30 °C (±1 °C)

700

742

800

(Vcontinous0 -

Vsampling)(2)

Voltage difference between continuous and sampling modes(5)

-10

tSTART(TS_BUF)(2) Sensor buffer startup time

µs

tS_temp(2)

ADC sampling time when reading the temperature

µs

IDD(TS)(2)

Consumption from VDD, when selected by ADC

µA

1. VSENSE linearity depends upon calibration points. When using TS_CALx calibration points, linearity within the calibration

limits is degraded by

±5 °C. Linearity outside the calibration limits is degraded more, due to the extrapolation.

2. Specified by design, not tested in production.

3. Evaluated by characterization, not tested in production, unless otherwise specified.

4. The VSENSE30 ADC4 conversion result is stored in the TS_CAL1 field.

5. The temperature sensor is in continuous mode when the regulator is in range 1, in sampling mode when the regulator is in

range 2 or the device is in Stop 1 mode.

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