Atmel Xplained Pro Evaluation Kit ATSAM4E-XPRO ATSAM4E-XPRO Data Sheet
Product codes
ATSAM4E-XPRO
1447
SAM4E [DATASHEET]
Atmel-11157D-ATARM-SAM4E16-SAM4E8-Datasheet_12-Jun-14
47.7.6 ADC Resolution with Averaging
47.7.6.1 Conditions @ 25°C with Gain =1
f
ADC
= 20 MHz; f
ADC
= 2 MHz for INL and DNL static measurement only
f
S
= 1 MHz, ADC Sampling Frequency in Free Run Mode
V
ADVREF
= 3V
Signal Amplitude: V
ADVREF
/2, Signal Frequency < 100 Hz
OSR: Number of Averaged Samples
V
VDDIN
= 2.4V
Table 47-46.
ADC Resolution following Digital Averaging (Gain=1)
Parameter Averaging
Resolution
RES (AFEC_EMR)
Over
Sampling
Ratio
Mode
(bits)
INL
(LSB)
DNL
(LSB)
SNR
(dB)
THD
(dB)
ENOB
(bits)
FS
(ksps)
Single Ended Mode
RES = 0
1
12
+/-1
+/-0.5
63.5
-83
10.2
1000
RES = 2
4
13
+/-1
+/-1
68.3
-84.5
11
250
RES = 3
16
14
+4 / -2
+3.2 / -1
73
-85.7
11.8
62.5
RES = 4
64
15
+6 / -3.5
—
76.8
-85.8
12.4
15.6
RES = 5
256
16
+15 / -8
—
82.7
-86.2
13.2
3.9
Differential Mode
RES = 0
1
12
+/-1
+/-0.5
64
-83
10.3
1000
RES = 2
4
13
+/-1
+/-1
69.2
-83.7
11.2
250
RES = 3
16
14
+3 / -1.5
+3 / -1
74.8
-84.5
12.1
62.5
RES = 4
64
15
+6 / -3.5
—
80.2
-84.5
12.8
15.6
RES = 5
256
16
+10 / -7
—
83.9
-84.9
13.2
3.9