Datasheet

XC167CI-16F
Derivatives
Electrical Parameters
Data Sheet 65 V1.3, 2006-08
4.3 Analog/Digital Converter Parameters
Table 14 A/D Converter Characteristics (Operating Conditions apply)
Parameter Symbol Limit Values Unit Test
Condition
Min. Max.
Analog reference supply
V
AREF
SR 4.5 V
DDP
+ 0.1
V
1)
1) TUE is tested at V
AREF
= V
DDP
+ 0.1 V, V
AGND
= 0 V. It is verified by design for all other voltages within the
defined voltage range.
If the analog reference supply voltage drops below 4.5 V (i.e.
V
AREF
≥ 4.0 V) or exceeds the power supply
voltage by up to 0.2 V (i.e.
V
AREF
= V
DDP
+ 0.2 V) the maximum TUE is increased to ±3 LSB. This range is not
subject to production test.
The specified TUE is guaranteed only, if the absolute sum of input overload currents on Port 5 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. During the reset calibration sequence the maximum TUE may be ±4 LSB.
Analog reference ground V
AGND
SR V
SS
- 0.1 V
SS
+ 0.1 V –
Analog input voltage range
V
AIN
SR V
AGND
V
AREF
V
2)
2) V
AIN
may exceed V
AGND
or V
AREF
up to the absolute maximum ratings. However, the conversion result in these
cases will be X000
H
or X3FF
H
, respectively.
Basic clock frequency f
BC
0.5 20 MHz
3)
Conversion time for 10-bit
result
4)
t
C10P
CC 52 × t
BC
+ t
S
+ 6 × t
SYS
– Post-calibr. on
t
C10
CC 40 × t
BC
+ t
S
+ 6 × t
SYS
– Post-calibr. off
Conversion time for 8-bit
result
4)
t
C8P
CC 44 × t
BC
+ t
S
+ 6 × t
SYS
– Post-calibr. on
t
C8
CC 32 × t
BC
+ t
S
+ 6 × t
SYS
– Post-calibr. off
Calibration time after reset
t
CAL
CC 484 11,696 t
BC
5)
Total unadjusted error TUE CC – ±2LSB
1)
Total capacitance
of an analog input
C
AINT
CC – 15 pF
6)
Switched capacitance
of an analog input
C
AINS
CC – 10 pF
6)
Resistance of
the analog input path
R
AIN
CC – 2 kΩ
6)
Total capacitance
of the reference input
C
AREFT
CC – 20 pF
6)
Switched capacitance
of the reference input
C
AREFS
CC – 15 pF
6)
Resistance of
the reference input path
R
AREF
CC – 1 kΩ
6)