SAM4L_14 Datasheet, PDF (133/176 Pages) ATMEL Corporation – Technology for Ultra-low Power Consumption

ATSAM4L8/L4/L2
9.9.4 Analog- to Digital Converter Characteristics
Table 9-45. Operating conditions
Symbol
Parameter
Conditions
Min
Typ
Temperature range
Resolution ⁽¹⁾
Max
-40
12
Sampling clock ⁽³⁾
Differential modes, Gain=1X
5
Unipolar modes, Gain=1X
5
Differential modes
f_ADC
ADC clock frequency⁽³⁾
Unipolar modes
0.03
0.03
T_SAMPLEHOLD
Sampling time⁽³⁾
Conversion rate⁽¹⁾
Differential modes
16.5
Unipolar modes
16.5
1X gain, differential
Internal channel conversion
rate⁽³⁾
V_VDD/10, Bandgap and
Temperature channels
1X gain, (resolution/2)+gain ⁽⁴⁾
Conversion time (latency)
Differential mode (no windowing)
2X and 4X gain
8X and 16X gain
32X and 64X gain
64X gain and unipolar
1.
These values are based on characterization. These values are not covered by test limits in production
2.
Single ended or using divide by two max resolution: 11 bits
3.
These values are based on simulation. These values are not covered by test limits in production
4.
See Figure 9-5
Max
+85
12 ⁽²⁾
300
250
1.8
1.5
277
333
300
125
6
7
8
9
10
Units
°C
Bit
kHz
MHz
µs
kSps
kSps
Cycles
Figure 9-5. Maximum input common mode voltage
3
2.5
2
1.5
1
0.5
0
1.6
M AX in p u t co m m o n m o de v o lta g e
V cc
vc m _vref= 3V
vc m _vref= 1V
3.6
42023GS–SAM–03/2014
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