STM32L15XRC datasheet(98/136 Pages) STMICROELECTRONICS

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Electrical characteristics

STM32L151xC STM32L152xC

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DocID022799 Rev 12

6.3.17

12-bit ADC characteristics

Unless otherwise specified, the parameters given in Table 56 are guaranteed by design.

Table 55. ADC clock frequency

Symbol Parameter

Conditions

Min

Max

Unit

fADC

ADC clock

frequency

Voltage

range 1 & 2

2.4 V

≤VDDA ≤3.6 V

VREF+ = VDDA

0.480

MHz

VREF+ < VDDA

VREF+ > 2.4 V

VREF+ < VDDA

VREF+ ≤2.4 V

1.8 V

≤VDDA ≤2.4 V

VREF+ = VDDA

VREF+ < VDDA

Voltage range 3

Table 56. ADC characteristics

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

VDDA

Power supply

1.8

3.6

VREF+

Positive reference voltage

1.8(1)

-VDDA

VREF-

Negative reference voltage

VSSA

IVDDA

Current on the VDDA input pin

1000

1450

µA

IVREF(2) Current on the VREF input pin

Peak

400

700

Average

450

VAIN

Conversion voltage range(3)

-0(4)

-VREF+

12-bit sampling rate

Direct channels

Msps

Multiplexed channels

0.76

10-bit sampling rate

Direct channels

1.07

Msps

Multiplexed channels

0.8

8-bit sampling rate

Direct channels

1.23

Msps

Multiplexed channels

0.89

6-bit sampling rate

Direct channels

1.45

Msps

Multiplexed channels

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