STM32L151CBT6 Datasheet, PDF (92/121 Pages) STMicroelectronics – Ultra-low-power 32-bit MCU ARM-based Cortex-M3, 128KB Flash, 16KB SRAM, 4KB EEPROM, LCD, USB, ADC, DAC

Electrical characteristics
STM32L151x6/8/B, STM32L152x6/8/B
Table 55.
Symbol
ADC accuracy⁽¹⁾⁽²⁾
Parameter
Test conditions
Min⁽³⁾
Typ
Max⁽³⁾ Unit
ET Total unadjusted error
EO Offset error
EG Gain error
ED Differential linearity error
EL Integral linearity error
2.4 V ≤ V_DDA ≤ 3.6 V
2.4 V ≤ V_REF+ ≤ 3.6 V
f_ADC = 8 MHz, R_AIN = 50 Ω
T_A = -40 to 105 °C
-
2
4
-
1
2
-
1.5
3.5
LSB
-
1
2
-
1.7
3
ENOB Effective number of bits
SINAD
Signal-to-noise and
distorsion ratio
SNR Signal-to-noise ratio
THD Total harmonic distorsion
ET Total unadjusted error
EO Offset error
EG Gain error
ED Differential linearity error
EL Integral linearity error
ET Total unadjusted error
EO Offset error
EG Gain error
ED Differential linearity error
EL Integral linearity error
2.4 V ≤ V_DDA ≤ 3.6 V
V_DDA = V_REF+
f_ADC = 16 MHz, R_AIN = 50 Ω
T_A = -40 to 105 °C
1 kHz ≤ F_input ≤ 100 kHz
2.4 V ≤ V_DDA ≤ 3.6 V
1.8 V ≤ V_REF+ ≤ 2.4 V
f_ADC = 4 MHz, R_AIN = 50 Ω
T_A = -40 to 105 °C
1.8 V ≤ V_DDA ≤ 2.4 V
1.8 V ≤ V_REF+ ≤ 2.4 V
f_ADC = 4 MHz, R_AIN = 50 Ω
T_A = -40 to 105 °C
9.2
10
-
bits
57.5
62
-
57.5
62
-
dB
-74
-75
-
-
4
6.5
-
2
4
-
4
6
LSB
-
1
2
-
1.5
3
2
3
1
1.5
1.5
2
LSB
1
2
1
1.5
1. ADC DC accuracy values are measured after internal calibration.
2. ADC accuracy vs. negative injection current: Injecting a 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 currents.
Any positive injection current within the limits specified for I_INJ(PIN) and ΣI_INJ(PIN) in Section 6.3.11 does not affect the ADC
accuracy.
3. Based on characterization, not tested in production.
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Doc ID 17659 Rev 8