ST7-STICK45 STMICROELECTRONICS [STMicroelectronics], ST7-STICK45 Datasheet - Page 107

• Manufacturer Part Number: ST7-STICK45
• Description: 8-bit microcontroller with single voltage Flash memory, data EEPROM, ADC, timers, SPI
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

ADC CHARACTERISTICS (Cont’d)
Figure 84. ADC Accuracy Characteristics with Amplifier disabled
Figure 85. ADC Accuracy Characteristics with Amplifier enabled
Note: When the AMPSEL bit in the ADCDRL register is set, it is mandatory that f
to 2 MHz. (if f
n+7
n+6
n+5
n+4
n+3
n+2
n+1
255
254
253
7
6
5
4
3
2
1
0
0
V
V
SSA
SS
Digital Result ADCDR
Digital Result ADCDR
1
1
1LSB
E
E
O
O
2
2
CPU
IDEAL
3
3
=8MHz. then SPEED=0, SLOW=1).
=
V
---------------------------------------- -
4
4
DDA
5
5
256
1 LSB
1 LSB
–
V
E
E
SSA
6
6
T
T
IDEAL
IDEAL
E
E
7
7
L
L
(2)
(2)
E
E
D
D
253 254 255 256
100 101 102 103
(3)
(3)
(1)
(1)
E
E
250 mV
G
G
V
DDA
(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.
(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.
n =Amplifier Offset
T
O
G
D
L
T
O
G
D
L
=Total Unadjusted Error: maximum deviation
=Integral Linearity Error: maximum deviation
=Total Unadjusted Error: maximum deviation
=Integral Linearity Error: maximum deviation
=Offset Error: deviation between the first actual
=Gain Error: deviation between the last ideal
=Differential Linearity Error: maximum deviation
V
=Offset Error: deviation between the first actual
=Gain Error: deviation between the last ideal
=Differential Linearity Error: maximum deviation
V
in
in
(LSB
(LSB
ST7LITE0xY0, ST7LITESxY0
IDEAL
IDEAL
)
)
ADC
be less than or equal
107/124