Atmel Evaluation Kit for AT32uC3A0512, 32-Bit AVR Microcontroller Atmel ATEVK1105 ATEVK1105 Data Sheet
Product codes
ATEVK1105
772
AT32UC3A
38.8
ADC Characteristics
Notes: 1. Corresponds to 13 clock cycles at 5 MHz: 3 clock cycles for track and hold acquisition time and 10 clock cycles for
conversion.
2. Corresponds to 15 clock cycles at 8 MHz: 5 clock cycles for track and hold acquisition time and 10 clock cycles for
conversion.
Note:
ADVREF should be connected to GND to avoid extra consumption in case ADC is not used.
Table 38-17.
Channel Conversion Time and ADC Clock
Parameter
Conditions
Min
Typ
Max
Units
ADC Clock Frequency
10-bit resolution mode
5
MHz
ADC Clock Frequency
8-bit resolution mode
8
MHz
Startup Time
Return from Idle Mode
20
µs
Track and Hold Acquisition Time
600
ns
Conversion Time
ADC Clock = 5 MHz
2
µs
Conversion Time
ADC Clock = 8 MHz
1.25
µs
Throughput Rate
ADC Clock = 5 MHz
384
kSPS
Throughput Rate
ADC Clock = 8 MHz
533
kSPS
Table 38-18.
External Voltage Reference Input
Parameter
Conditions
Min
Typ
Max
Units
ADVREF Input Voltage Range
2.6
VDDANA
V
ADVREF Average Current
On 13 samples with ADC Clock = 5 MHz
200
250
µA
Current Consumption on VDDANA
1.25
mA
Table 38-19.
Analog Inputs
Parameter
Min
Typ
Max
Units
Input Voltage Range
0
V
ADVREF
Input Leakage Current
1
µA
Input Capacitance
17
pF
Table 38-20.
Transfer Characteristics in 8-bit mode
Parameter
Conditions
Min
Typ
Max
Units
Resolution
8
Bit
Absolute Accuracy
f=5MHz
0.8
LSB
f=8MHz
1.5
LSB
Integral Non-linearity
f=5MHz
0.35
0.5
LSB
f=8MHz
0.5
1.0
LSB
Differential Non-linearity
f=5MHz
0.3
0.5
LSB
f=8MHz
0.5
1.0
LSB
Offset Error
f=5MHz
-0.5
0.5
LSB
Gain Error
f=5MHz
-0.5
0.5
LSB
32058K
AVR32-01/12