ST STM32 Application Note

DocID15067 Rev 3 11/49
AN2834 ADC errors
48
Figure 7. Positive offset error representation
1. The error offset, E
O
, is shown in magenta.
When an analog input voltage of less than 0.5 LSB generates the first transition, the offset
error is negative (refer to Figure 8 for an example of negative offset error).
If the analog input voltage (V
AIN
) is equal to V
SSA
and the ADC generates a non-zero digital
output, the offset error is negative. This means that a negative voltage generates the first
transition.
Figure 8. Negative offset error representation
1. The error offset, E
O
, is shown in magenta.
DLE
'LJLWDORXWSXW
9
$,1
,GHDOWUDQVIHUFXUYH
$FWXDOWUDQVIHUFXUYH
/6%
(
2

!



DLE
'LJLWDORXWSXW
,GHDOWUDQVIHUFXUYH
$FWXDOWUDQVIHUFXUYH
/6%
(
2

!



9
$,1

ST STM32 Specifications

General

Series	STM32
Category	Microcontrollers
Core	ARM Cortex-M0, Cortex-M0+, Cortex-M3, Cortex-M4, Cortex-M7, Cortex-M33
Clock Speed	Up to 480 MHz
GPIO Pins	Up to 144
Communication Interfaces	I2C, SPI, USART, USB, CAN, Ethernet
Package Types	LQFP, BGA, WLCSP
ADC Resolution	12-bit, 16-bit (varies by series)
DAC Resolution	12-bit (varies by series)
Operating Temperature	-40°C to +85°C or +105°C