STM32L021D4 datasheet(82/114 Pages) STMICROELECTRONICS

Teilenummer	STM32L021D4

Bauteilbeschribung	Access line ultra-low-power 32-bit MCU Arm®-based Cortex®-M0, 16KB Flash, 2KB SRAM, 512B EEPROM, ADC, AES

PDF	114 Pages

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Hersteller	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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82 / 114 page

Electrical characteristics

STM32L021x4

82/114

DocID027982 Rev 5

Table 54. RAIN max for fADC = 16 MHz(1)

(cycles)

(µs)

RAIN max for

fast channels

Ω)

RAIN max for standard channels (kΩ)

VDD >

2.7 V

VDD >

2.4 V

VDD >

2.0 V

VDD >

1.8 V

VDD >

1.75 V

VDD > 1.65 V

and

TA > −10 °C

VDD > 1.65 V

and

TA > 25 °C

1.5

0.09

0.5

< 0.1

3.5

0.22

0.2

< 0.1

7.5

0.47

2.5

1.7

1.5

< 0.1

12.5

0.78

3.2

19.5

1.22

6.5

5.7

5.5

3.5

< 0.1

39.5

2.47

12.2

79.5

4.97

26.2

< 0.1

160.5

10.03

49.2

< 0.1

1. Guaranteed by design.

Table 55. ADC accuracy(1)(2)(3)(4)

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

Total unadjusted error

1.65 V < VDDA < 3.6 V, range

1/2/3, except for TSSOP14

package

-2

LSB

Offset error

2.5

Gain error

Integral linearity error

1.5

2.5

Differential linearity error

1.5

ENOB

Effective number of bits

10.2

bits

Effective number of bits (16-bit mode

oversampling with ratio =256)(5)

11.3

12.1

SINAD

Signal-to-noise distortion

67.8

SNR

Signal-to-noise ratio

Signal-to-noise ratio (16-bit mode

oversampling with ratio =256)(5)

THD

Total harmonic distortion

-81

-68.5

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