XC886CLM_09 Datasheet, PDF (123/144 Pages) Infineon Technologies AG – 8-Bit Single Chip Microcontroller

XC886/888CLM
Electrical Parameters
4.2.3 ADC Characteristics
The values in the table below are given for an analog power supply between 4.5 V to
5.5 V. The ADC can be used with an analog power supply down to 3 V. But in this case,
the analog parameters may show a reduced performance. All ground pins (V_SS) must be
externally connected to one single star point in the system. The voltage difference
between the ground pins must not exceed 200mV.
Table 40 ADC Characteristics (Operating Conditions apply; V_DDP = 5V Range)
Parameter
Symbol
Limit Values Unit Test Conditions/
min. typ . max.
Remarks
Analog reference V_AREF SR V_AGND V_DDP V_DDP V
1)
voltage
+1
+ 0.05
Analog reference V_AGND SR V_SS - V_SS V_AREF V
1)
ground
0.05
-1
Analog input
voltage range
V_AIN
SR V_AGND –
V_AREF V
ADC clocks
f_ADC
f_ADCI
–
24 25.8 MHz module clock¹⁾
–
–
10
MHz internal analog clock¹⁾
See Figure 35
Sample time
Conversion time
Total unadjusted
error
t_S
t_C
|TUE|
CC (2 + INPCR0.STC) ×
t_ADCI
CC See Section 4.2.3.1
CC –
–
1
–
–
2
µs
µs
LSB
LSB
1)
1)
8-bit conversion²⁾
10-bit conversion²⁾
Differential
Nonlinearity
|EA_DNL| CC –
1
–
LSB 10-bit conversion¹⁾
Integral
Nonlinearity
|EA_INL| CC –
1
–
LSB 10-bit conversion¹⁾
Offset
|EA_OFF| CC –
1
–
LSB 10-bit conversion¹⁾
Gain
|EA_GAIN| CC –
1
–
LSB 10-bit conversion¹⁾
Overload current K_OVA CC –
–
1.0 x –
I_OV > 0¹⁾³⁾
coupling factor for
10^-4
analog inputs
–
–
1.5 x –
I_OV < 0¹⁾³⁾
10^-3
Data Sheet
116
V1.2, 2009-07