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STM32L552VCU6PTR Datasheet(PDF) 251 Page - STMicroelectronics

Part # STM32L552VCU6PTR
Description  Ultra-low-power Arm® Cortex®-M33 32-bit MCUTrustZone®FPU, 165 DMIPS, up to 512 KB Flash memory, 256 KB SRAM, SMPS
PDF  340 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STM32L552VCU6PTR Datasheet(HTML) 251 Page - STMicroelectronics

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DS12737 Rev 6
251/340
STM32L552xx
Electrical characteristics
307
Figure 43. ADC accuracy characteristics
Figure 44. Typical connection diagram using the ADC
1. Refer to Table 109: ADC characteristics for the values of RAIN and CADC.
2. Cparasitic represents the capacitance of the PCB (dependent on soldering and PCB layout quality) plus the
pad capacitance (refer to Table 102: I/O static characteristics for the value of the pad capacitance). A high
Cparasitic value downgrades the conversion accuracy. To remedy this, fADC should be reduced.
3. Refer to Table 102: I/O static characteristics for the values of Ilkg.
General PCB design guidelines
Power supply decoupling should be performed as shown in the corresponding power supply
scheme. The 10 nF capacitor should be ceramic (good quality) and it should be placed as
close as possible to the chip.
ET = total unajusted error: maximum deviation
between the actual and ideal transfer curves.
EO = offset error: maximum deviation
between the first actual transition and
the first ideal one.
EG = gain error: deviation between the last
ideal transition and the last actual one.
ED = differential linearity error: maximum
deviation between actual steps and the ideal ones.
EL = integral linearity error: maximum deviation
between any actual transition and the end point
correlation line.
(1) Example of an actual transfer curve
(2) The ideal transfer curve
(3) End point correlation line
4095
4094
4093
7
6
5
4
3
2
1
0
23
4
5
6
1
7
4093 4094 4095 4096
VDDA
VSSA
EO
ET
EL
EG
ED
1 LSB IDEAL
(1)
(3)
(2)
MS19880V2
MS33900V5
Sample and hold ADC converter
12-bit
converter
Cparasitic
(2)
Ilkg
(3)
VT
CADC
VDDA
RAIN
(1)
VAIN
VT
AINx
RADC



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