STM32L443CC datasheet(148/207 Pages) STMICROELECTRONICS

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Electrical characteristics

STM32L443CC STM32L443RC STM32L443VC

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DocID028739 Rev 2

THD

Total

harmonic

distortion

ADC clock frequency ≤

80 MHz,

Sampling rate ≤ 5.33 Msps,

1.65 V ≤ VDDA = VREF+ ≤

3.6 V,

Voltage scaling Range 1

Single

ended

Fast channel (max speed)

-69

-67

Slow channel (max speed)

-71

-67

Differential

Fast channel (max speed)

-72

-71

Slow channel (max speed)

-72

-71

1. Guaranteed by design.

2. ADC DC accuracy values are measured after internal calibration.

3. ADC accuracy vs. negative Injection Current: Injecting negative current on any analog input pins should be avoided as this

significantly reduces the accuracy of the conversion being performed on another analog input. It is recommended to add a

Schottky diode (pin to ground) to analog pins which may potentially inject negative current.

4. The I/O analog switch voltage booster is enable when VDDA < 2.4 V (BOOSTEN = 1 in the SYSCFG_CFGR1 when

VDDA < 2.4 V). It is disable when VDDA ≥ 2.4 V. No oversampling.

Table 67. ADC accuracy - limited test conditions 3(1)(2)(3) (continued)

Sym-

bol

Parameter

Conditions(4)

Min Typ Max Unit

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