STM32L151XE datasheet(102/134 Pages) STMICROELECTRONICS

102 / 134 page

Electrical characteristics

STM32L151xE STM32L152xE

102/134

DocID025433 Rev 8

6.3.17

12-bit ADC characteristics

Unless otherwise specified, the parameters given in Table 55 are guaranteed by design.

Table 54. 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 55. 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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