STM32F050C4 datasheet(73/97 Pages) STMICROELECTRONICS

tên linh kiện	STM32F050C4

Giải thích chi tiết về linh kiện	Low- and medium-density advanced ARM-based 32-bit MCU with up to 32 Kbytes Flash, timers, ADC and comm. interfaces

PDF	97 Pages

Scroll/Zoom	100%

nhà sản xuất	STMICROELECTRONICS [STMicroelectronics]

Trang chủ	http://www.st.com

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73 / 97 page

STM32F050xx

Electrical characteristics

Doc ID 023683 Rev 1

73/97

Equation 1: RAIN max formula

The formula above (Equation 1) is used to determine the maximum external impedance

allowed for an error below 1/4 of LSB. Here N = 12 (from 12-bit resolution).

Table 50.

RAIN max for fADC = 14 MHz

(1)

Guaranteed by design, not tested in production.

Ts (cycles)

tS (µs)

RAIN max (kΩ)

1.5

0.11

0.4

7.5

0.54

5.9

13.5

0.96

11.4

28.5

2.04

25.2

41.5

2.96

37.2

55.5

3.96

71.5

5.11

239.5

17.1

Table 51.

ADC accuracy(1)(2) (3)

ADC DC accuracy values are measured after internal calibration.

Symbol

Parameter

Test conditions

Typ

Max(4)

Unit

Total unadjusted error

fPCLK = 48 MHz,

fADC = 14 MHz, RAIN < 10 kΩ,

VDDA = 3 V to 3.6 V

TA = 25 °C

±1.3

±2

LSB

Offset error

±1

±1.5

Gain error

±0.5

±1.5

Differential linearity error

±0.7

±1

Integral linearity error

±0.8

±1.5

Total unadjusted error

fPCLK = 48 MHz,

fADC = 14 MHz, RAIN < 10 kΩ,

VDDA = 2.7 V to 3.6 V

TA =

−40 to 105 °C

±3.3

±4

LSB

Offset error

±1.9

±2.8

Gain error

±2.8

±3

Differential linearity error

±0.7

±1.3

Integral linearity error

±1.2

±1.7

Total unadjusted error

fPCLK = 48 MHz,

fADC = 14 MHz, RAIN < 10 kΩ,

VDDA = 2.4 V to 3.6 V

TA = 25 °C

±3.3

±4

LSB

Offset error

±1.9

±2.8

Gain error

±2.8

±3

Differential linearity error

±0.7

±1.3

Integral linearity error

±1.2

±1.7

AIN

ADC

()

----------------------------------------------------------------

ADC

–

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