SAM4L_14 Datasheet, PDF (134/176 Pages) ATMEL Corporation – Technology for Ultra-low Power Consumption

ATSAM4L8/L4/L2
Table 9-46. DC Characteristics
Symbol Parameter
VDDANA Supply voltage ⁽¹⁾
Conditions
Min
Typ
1.6
Differential mode
1.0
Reference range ⁽²⁾
Unipolar and Window modes
1.0
Using divide by two function
(differential)
2.0
Absolute min, max input voltage⁽²⁾
-0,1
Start up time⁽²⁾
R_SAMPLE
C_SAMPLE
Input channel source resistance⁽²⁾
Sampling capacitance⁽²⁾
Reference input source resistance⁽²⁾
ADC reference settling time⁽²⁾
ADC with reference already
enabled
No gain compensation
Reference buffer
Gain compensation
Reference buffer
Gain compensation
No gain compensation
After changing
reference/mode ⁽³⁾
12
2.9
3.6
5
1.
These values are based on characterization. These values are not covered by test limits in production
2.
These values are based on simulation. These values are not covered by test limits in production
3.
Requires refresh/flush otherwise conversion time (latency) + 1
Max
3.6
VDDANA
-0.6
1.0
VDDANA
VDDANA
+0.1
24
5
60
0.5
4.3
2
1
60
Units
V
V
V
Cycles
µs
Cycles
kΩ
pF
kΩ
MΩ
Cycles
Table 9-47. Differential mode, gain=1
Symbol
Parameter
Accuracy without compensation ⁽¹⁾
Accuracy after compensation⁽¹⁾
Conditions
(INL, gain and offset)
Min
Typ
Max
Units
7
ENOB
11
ENOB
INL
DNL
Integral Non Linearity ⁽²⁾
Differential Non Linearity⁽²⁾
After calibration,
Gain compensation
After calibration
1.2
1.7
LSBs
0.7
1.0
LSBs
External reference
-5.0
-1.0
5.0
Gain error ⁽²⁾
VDDANA/1.6
VDDANA/2.0
-40
40
mV
-40
40
Gain error drift vs voltage⁽¹⁾
Bandgap After calibration
-30
External reference
-2
30
2
mV/V
Gain error drift vs temperature⁽¹⁾
After calibration + bandgap drift
If using onchip bandgap
0.08
mV/°K
External reference
-5.0
5.0
Offset error ⁽²⁾
VDDANA/1.6
VDDANA/2.0
-10
10
mV
-10
10
Offset error drift vs voltage⁽¹⁾
Bandgap After calibration
-10
-4
10
4
mV/V
42023GS–SAM–03/2014
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