Datasheet

SAM4E [DATASHEET]
Atmel-11157D-ATARM-SAM4E16-SAM4E8-Datasheet_12-Jun-14
1448
47.7.6.2 Conditions @ 25°C with Gain =4
 f
ADC
= 20 MHz
 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
Table 47-47. ADC Resolution following Digital Averaging (Gain=4)
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 59 -81 9.5 1000
RES = 2 4 13 +1.7 / -1.3 +1.6 / -1 63.1 -82.9 10.2 250
RES = 3 16 14 +1.7 / -2.5 +2 / -1 67 -83.6 10.8 62.5
RES = 4 64 15 +/-8 — 70.3 -84.5 11.4 15.6
RES = 5 256 16 +/-12 — 74.8 -85.1 12.1 3.9
Differential Mode
RES = 0 1 12 +/-1 +/-0.5 62 -84.5 10 1000
RES = 2 4 13 +/-1 +/-1 67.7 -85.7 10.9 25
RES = 3 16 14 +4.1 / -1.6 +3.4 / -1 73.6 -86.8 11.9 6.25
RES = 4 64 15 +/-3.5 — 78.7 -86.8 12.7 1.56
RES = 5 256 16 +/-7.5 — 82.1 -86.8 13.1 0.39