Datasheet

Electrical characteristics STM32L010F4/K4
74/91 DS12323 Rev 2
Figure 23. ADC accuracy characteristics
Table 54. ADC accuracy
(1)(2)(3)
Symbol Parameter Conditions Min Typ Max Unit
ET Total unadjusted error
1.8 V < V
DDA
< 3.6 V,
Range 1, 2 and 3
-2 4
LSB
EO Offset error - 1 2.5
EG Gain error - 1 2
EL Integral linearity error - 1.5 2.5
ED Differential linearity error - 1 1.5
ENOB
Effective number of bits 10.2 11 -
bits
Effective number of bits (16-bit mode
oversampling with ratio =256)
(4)
11.3 12.1 -
SINAD Signal-to-noise distortion 62 67.8 -
dBSNR
Signal-to-noise ratio 63 68 -
Signal-to-noise ratio (16-bit mode
oversampling with ratio =256)
(4)
70 76 -
THD Total harmonic distortion - -81 -68.5
1. ADC DC accuracy values are measured after internal calibration.
2. ADC accuracy vs. negative current injection: Injecting negative current on any of the standard (non-robust) analog input
pins must be avoided as it 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 standard analog pins that may potentially inject negative
current.
Any positive current injection within the limits specified for I
INJ(PIN)
and ΣI
INJ(PIN)
in Section 6.3.12 does not affect the ADC
accuracy.
3. Better performance may be achieved in restricted V
DDA
, frequency and temperature ranges.
4. This number is obtained by the test board without additional noise, resulting in non-optimized value for oversampling mode.
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