XC835/836
Electrical Parameters
3.2.3
ADC Characteristics
The values in Table 10 are given for an analog power supply of 5.0 V. The ADC can be
used with an analog power supply down to 3 V. But in this case, analog parameters may
show a reduced performance. In the reduced voltage mode (2.5 V < VDDP < 3 V), the
ADC is not recommended to be used.
Table 10
ADC Characteristics (Operating Conditions apply; VDDP = 5 V;
f
ADCI <= 12 MHz)
Parameter
Symbol
Limit Values
Min. Typ. Max.
Unit
Test
Conditions /
Remarks
Analog reference
voltage
Analog reference
ground
Alternate analog
reference ground
VAREF
VAGND
–
–
VDDP
VSSP
–
V
V
V
Connect
internally to VDDP
–
Connect
internally to VSSP
Connect to AN0
in differential
mode, See
Figure 9.
4)
VAGNDALT SR VSSP - –
2.51)
0.1
Internal voltage
reference
VINTREF SR 1.19 1.23 1.28
V
Analog input voltage VAIN
SR VAGND
–
–
VAREF
V
–
range
ADC clock
fADCI
tS
8
16
MHz
internal analog
clock
–
Sample time
CC (2 + INPCR0.STC) × µs
tADCI
Conversion time
tC
CC See Section 3.2.3.1 µs
–
2)
Set-uptimebetween tSETUP
conversions using
internal voltage
SR –
35
–
µs
reference
Data Sheet
29
V1.2, 2011-03
INFINEON [ Infineon ]
