51
32099DS–06/2010
AT32UC3L016/32/64
7.9.2
ADC Characteristics
7.9.2.1
Applicable Conditions and Derating Data
Table 7-23.
Channel Conversion Time and ADC Clock
Symbol
Parameter
Conditions
Min
Typ
Max
Units
f
ADC
ADC clock frequency
10-bit resolution mode
6
MHz
8-bit resolution mode
6
t
STARTUP
Startup time
Return from Idle Mode
15
µs
Sample and hold acquisition time
500
ns
t
CONV
Conversion time (latency)
f
ADC
= 6MHz
11
26
cycles
Throughput rate
f
ADC
= 6MHz, 10-bit resolution
mode, low impedance source
460
kSPS
f
ADC
= 6MHz, 8-bit resolution
mode, low impedance source
460
Table 7-24.
External Voltage Reference Input
Symbol
Parameter
Conditions
Min
Typ
Max
Units
V
ADVREFP
Reference voltage range
V
ADVREFP
= V
VDDANA
1.62
1.98
V
Current consumption on V
VDDANA
On 13 samples with ADC Clock =
5MHz
mA
I
ADVREFP
Average current
f
ADC
= 6MHz
250
µA
Table 7-25.
Analog Inputs
Symbol
Parameter
Conditions
Min
Typ
Max
Units
V
ADn
Input Voltage Range
10-bit mode
0
V
ADVREFP
V
8-bit mode
Table 7-26.
Transfer Characteristics 10-bit Resolution Mode
Parameter
Conditions
Min
Typ
Max
Units
Resolution
10
Bit
Integral non-linearity
ADC clock frequency = 6MHz
+/-2
LSB
Differential non-linearity
-0.9
1
Offset error
+/-4
Gain error
+/-4
Table 7-27.
Transfer Characteristics 8-bit Resolution Mode
Parameter
Conditions
Min
Typ
Max
Units
Resolution
8
Bit
