Data Sheet

956
Atmel | SMART SAM D21 [DATASHEET]
Atmel-42181G–SAM-D21_Datasheet–09/2015
Table 36-22. Differential Mode, Device Variant A
Symbol Parameter Conditions Min. Typ. Max. Units
ENOB Effective Number Of Bits With gain compensation - 10.5 11.1 bits
TUE Total Unadjusted Error
I 1x Gain n
1.5 4.3 15.0 LSB
INL I Integral Non Linearity
1x Gain n
1.0 1.3 4.5 LSB
DNL Differential Non Linearity
1x Gain n
+/-0.3 +/-0.5 +/-0.95 LSB
I
I
I
Gain Error
Ext. Ref 1x -10.0 2.5 +10.0 mV
V
REF
=V
DDANA
/1.48 -15.0 -1.5 +10.0 mV
Bandgap -20.0 -5.0 +20.0 mV
Gain Accuracy
(5)
Ext. Ref. 0.5x +/-0.1 +/-0.2 +/-0.45 %
Ext. Ref. 2x to 16x +/-0.05 +/-0.1 +/-0.11 %
Offset Error
Ext. Ref. 1x -5.0 -1.5 +5.0 mV
V
REF
=V
DDANA
/1.48 -5.0 0.5 +5.0 mV
Bandgap -5.0 3.0 +5.0 mV
SFDR Spurious Free Dynamic Range
1x Gain
F
CLK_ADC
= 2.1MHz
F
IN
= 40kHz
A
IN
= 95%FSR
62.7 70.0 75.0 dB
SINAD Signal-to-Noise and Distortion 54.1 65.0 68.5 dB
SNR Signal-to-Noise Ratio 54.5 65.5 68.6 dB
THD Total Harmonic Distortion -77.0 -64.0 -63.0 dB
Noise RMS T=25°C 0.6 1.0 1.6 mV
Table 36-23. Differential Mode, Device Variant B
Symbol Parameter Conditions Min. Typ. Max. Units
ENOB Effective Number Of Bits With gain compensation - 10.5 10.8 bits
TUE Total Unadjusted Error
I 1x Gain n
1.5 2.7 10.0 LSB
INL I Integral Non Linearity
1x Gain n
0.9 1.3 4.0 LSB
DNL Differential Non Linearity
1x Gain n
+/-0.3 +/-0.5 +/-0.95 LSB
I
I
I
Gain Error
Ext. Ref 1x -10.0 1.3 +10.0 mV
V
REF
=V
DDANA
/1.48 -10.0 -10 +10.0 mV
Bandgap -20.0 2.0 +20.0 mV