STM32L151VD datasheet(111/140 Pages) STMICROELECTRONICS

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STM32L151xD STM32L152xD

Electrical characteristics

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6.3.19

12-bit ADC characteristics

Unless otherwise specified, the parameters given in Table 64 are guaranteed by design.

Guaranteed by design, not tested in production.

Measured from 10% to 90% of the data signal. For more detailed informations, please refer to USB

Specification - Chapter 7 (version 2.0).

Table 63.

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 64.

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

1.54

Msps

Multiplexed channels

0.03

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