STM32L432KB datasheet(113/149 Pages) STMICROELECTRONICS

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DocID028798 Rev 2

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STM32L432KB STM3L432KC

Electrical characteristics

142

Table 63. ADC accuracy - limited test conditions 1(1)(2)(3)

Sym-

bol

Parameter

Conditions(4)

Min Typ Max Unit

Total

unadjusted

error

ADC clock frequency ≤

80 MHz,

Sampling rate ≤ 5.33 Msps,

VDDA = VREF+ = 3 V,

TA = 25 °C

Single

ended

Fast channel (max speed)

LSB

Slow channel (max speed)

Differential

Fast channel (max speed)

3.5

4.5

Slow channel (max speed)

3.5

4.5

Offset

error

Single

ended

Fast channel (max speed)

2.5

Slow channel (max speed)

2.5

Differential

Fast channel (max speed)

1.5

2.5

Slow channel (max speed)

1.5

2.5

Gain error

Single

ended

Fast channel (max speed)

2.5

4.5

Slow channel (max speed)

2.5

4.5

Differential

Fast channel (max speed)

2.5

3.5

Slow channel (max speed)

2.5

3.5

Differential

linearity

error

Single

ended

Fast channel (max speed)

1.5

Slow channel (max speed)

1.5

Differential

Fast channel (max speed)

1.2

Slow channel (max speed)

1.2

Integral

linearity

error

Single

ended

Fast channel (max speed)

1.5

2.5

Slow channel (max speed)

1.5

2.5

Differential

Fast channel (max speed)

Slow channel (max speed)

ENOB

Effective

number of

bits

Single

ended

Fast channel (max speed) 10.4 10.5

bits

Slow channel (max speed) 10.4 10.5

Differential

Fast channel (max speed) 10.8 10.9

Slow channel (max speed) 10.8 10.9

SINAD

Signal-to-

noise and

distortion

ratio

Single

ended

Fast channel (max speed) 64.4 65

Slow channel (max speed) 64.4 65

Differential

Fast channel (max speed) 66.8 67.4

Slow channel (max speed) 66.8 67.4

SNR

Signal-to-

noise ratio

Single

ended

Fast channel (max speed)

Slow channel (max speed)

Differential

Fast channel (max speed)

Slow channel (max speed)

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