STM32L151VBT6DTR datasheet(90/121 Pages) STMICROELECTRONICS

90 / 121 page

Electrical characteristics

STM32L151x6/8/B, STM32L152x6/8/B

90/121

Doc ID 17659 Rev 8

6.3.16

12-bit ADC characteristics

Unless otherwise specified, the parameters given in Table 54 are guaranteed by design.

Table 53.

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 54.

ADC characteristics

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

VDDA

Power supply

1.8

3.6

VREF+

Positive reference voltage

2.4 V

≤ VDDA ≤ 3.6 V

VREF+ must be below

or equal to VDDA

1.8(1)

VDDA

VREF-

Negative reference voltage

VSSA

IVDDA

Current on the VDDA input

1000

1450

µA

IVREF

(2)

Current on the VREF input

Peak

400

700

Average

450

VAIN

Conversion voltage range(3)

0(4)

VREF+

12-bit sampling rate

Direct channels

0.03

Msps

Multiplexed channels

0.03

0.76

10-bit sampling rate

Direct channels

0.03

1.07

Msps

Multiplexed channels

0.03

0.8

8-bit sampling rate

Direct channels

0.03

1.23

Msps

Multiplexed channels

0.03

0.89

6-bit sampling rate

Direct channels

0.03

1.45

Msps

Multiplexed channels

0.03

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