st7pmc2s6 STMicroelectronics, st7pmc2s6 Datasheet - Page 351

• Manufacturer Part Number: st7pmc2s6
• Description: 8-bit Mcu For Automotive With Nested Interrupts, Flash, 10-bit Adc, Brushless Motor Control, 5 Timers, Spi, Linsci?
• Manufacturer: STMicroelectronics

ST7MC1K2-Auto, ST7MC1K6-Auto, ST7MC2S4-Auto, ST7MC2S6-Auto
Figure 162. ADC accuracy characteristics
1. ADC accuracy vs. Negative injection current:
2. Data based on characterization results with T
3. Data based on characterization results over the whole temperature range, monitored in production.
1023
1022
1021
For I
for each 10K increase of the external analog source impedance. This effect on the ADC accuracy has been observed
under worst-case conditions for injection:
- negative injection
- injection to an input with analog capability, adjacent to the enabled analog input
- at 5V V
7
6
5
4
3
2
1
0
V
INJ-
SSA
Digital result ADCDR
= 0.8mA, the typical leakage induced inside the die is 1.6µA and the effect on the ADC accuracy is a loss of 4 LSB
DD
1LSB
1
E
supply, and worst case temperature.
O
IDEAL
2
3
=
V
---------------------------------------- -
DDA
4
1024
–
5
1 LSB
V
SSA
E
6
T
IDEAL
E
L
7
(2)
A
= 25°C.
E
D
1021 1022 1023 1024
(3)
(1)
E
G
V
AREF
(1) Example of an actual transfer curve
(2) The ideal transfer curve
(3) End point correlation line
E
between the actual and the ideal transfer curves.
E
transition and the first ideal one.
E
transition and the last actual one.
E
between actual steps and the ideal one.
E
between any actual transition and the end point
correlation line.
T
O
G
D
L
= Total unadjusted error: maximum deviation
= Integral linearity error: maximum deviation
= Differential linearity error: maximum deviation
= Offset error: deviation between the first actual
= Gain error: deviation between the last ideal
V
in
(LSB
IDEAL
Electrical characteristics
)
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