XC228X Datasheet, PDF (86/110 Pages) Infineon Technologies AG – 16/32-Bit Single-Chip Microcontroller with 32-Bit Performance

XC2287 / XC2286 / XC2285
XC2000 Family Derivatives
Preliminary
Electrical Parameters
4.3
Analog/Digital Converter Parameters
These parameters describe how the optimum ADC performance can be reached.
Table 15 A/D Converter Characteristics (Operating Conditions apply)
Parameter
Analog reference supply
Symbol
Limit Values
Min.
Max.
V_AREF SR V_AGND
+ 1.0
V_DDPA
+ 0.05
Unit Test
Condition
V
1)
Analog reference ground V_AGND
Analog input voltage range V_AIN
Basic clock frequency
f_ADCI
Conversion time for 10-bit t_C10
result⁴⁾
SR V_SS
- 0.05
V_AREF
- 1.0
SR V_AGND
0.5
V_AREF
16.5
CC (17 + STC) × t_ADCI
V–
V
2)
MHz ³⁾
––
Conversion time for 8-bit
result⁴⁾
Total unadjusted error
Total capacitance
of an analog input
Switched capacitance
of an analog input
Resistance of
the analog input path
Total capacitance
of the reference input
Switched capacitance
of the reference input
Resistance of
the reference input path
t_C8
CC (15 + STC) × t_ADCI
TUE CC –
±2
C_AINT CC –
15
C_AINS CC –
7
R_AIN CC –
1.5
C_AREFT CC –
20
C_AREFS CC –
20
R_AREF CC –
2
––
LSB ¹⁾
pF ⁵⁾
pF ⁵⁾
kΩ ⁵⁾
pF ⁵⁾
pF ⁵⁾
kΩ ⁵⁾
1) TUE is tested at V_AREFx = V_DDPA, V_AGND = 0 V. It is verified by design for all other voltages within the defined
voltage range.
The specified TUE is valid only, if the absolute sum of input overload currents on Port 5 or Port 15 pins (see
I_OV specification) does not exceed 10 mA, and if V_AREF and V_AGND remain stable during the respective period
of time.
2) V_AIN may exceed V_AGND or V_AREFx up to the absolute maximum ratings. However, the conversion result in these
cases will be X000_H or X3FF_H, respectively.
3) The limit values for f_ADCI must not be exceeded when selecting the peripheral frequency and the prescaler
setting.
Data Sheet
84
V0.91, 2007-02
Draft Version