Datasheet

1137
SAM4S Series [DATASHEET]
11100F–ATARM–29-Jan-14
44.8.5.2 ADC Electrical Performances
Single-ended Static Performances
Single-ended Dynamic Performances
Notes: 1. ADC Clock (f
ADC
) = 20 MHz, f
S
=1 MHz, Fin = 127 kHz, Frequency band = [1 kHz, 500 kHz] – Nyquist conditions
fulfilled.
Differential Static Performances
Differential Dynamic Performances
Notes: 1. ADC Clock (f
ADC
) = 20 MHz, f
S
=1 MHz, Fin = 127 kHz, Frequency band = [1 kHz, 500 kHz] – Nyquist conditions
fulfilled.
10-bit ADC Mode
In 10-bit mode, the ADC produces 12-bit output but the output data in the register ADC_CDRx is shifted 2 bits to the right,
removing the two LSBs of the 12-bit ADC.
The gain and offset have the same values as for 12-bit mode, with digital full-scale output code range reduced to 1024
(vs 4096).
The INL and DNL have the same values as for 12-bit mode.
The dynamic performances are the 12-bit mode values, reduced by 12 dB.
Table 44-47. Single-ended Static Electrical Characteristics
Symbol Parameter Conditions Min Typ Max Unit
INL ADC Integral Non-linearity -2 +/-1 2 LSB
DNL ADC Differential Non-linearity -1 -+/-0.5 1 LSB
Table 44-48. Single-ended Dynamic Electrical Characteristics
(1)
Symbol Parameter Conditions Min Typ Max Unit
SNR Signal to Noise Ratio
(1)
56 64 72 dB
THD Total Harmonic Distortion
(1)
66 74 84 dB
SINAD Signal to Noise and Distortion
(1)
55 62 71 dB
ENOB Effective Number of Bits
(1)
9 10.5 12 bits
Table 44-49. Differential Static Electrical Characteristics
Symbol Parameter Conditions Min Typ Max Unit
INL Integral Non-linearity -2 +/-1 2 LSB
DNL Differential Non-linearity -1 +/-0.5 1 LSB
Table 44-50. Differential Dynamic Electrical Characteristics
(1)
Symbol Parameter Conditions Min Typ Max Unit
SNR Signal to Noise Ratio - SNR
(1)
60 70 74 dB
THD Total Harmonic Distortion - THD
(1)
72 80 84 dB
SINAD Signal to Noise and Distortion - SINAD
(1)
60 68 73 dB
ENOB Effective Number of Bits ENOB
(1)
9.5 11 12 bits