Datasheet

DRAFT
1407
SAM3X / SAM3A [DATASHEET]
Atmel-11057C-ATARM-SAM3X-SAM3A-Datasheet_23-Mar-15
45.7.2 Dynamic Performance Characteristics
The following conditions apply for the characteristics provided in Table 45-35 and Table 45-36:
 ADC resolution = 12 bits
 Temperature range -40 to 100 °C
 f
ADC
= 20 MHz
 ADC_ACR.IBCTL = 01
 f
s
= 1 MHz
 f
IN
= 127 kHz
 FFT using 1024 points or more
 Frequency band = [1–500 kHz]
 Nyquist conditions fulfilled
Table 45-35. Dynamic Performance Characteristics in Single-ended and 12-bit Mode
Symbol Parameter Conditions Min Typ Max Unit
SNR Signal to Noise Ratio
Single-ended, DIFF = 0, OFF = x, GAIN = 10 66 71 74 dB
Single-ended, Other Cases 57 62 68 dB
THD Total Harmonic Distortion
Single-ended, DIFF = 0, OFF = x, GAIN = 10 -71 -84 – dB
Single-ended, Other Cases -67 -80 – dB
SINAD Signal to Noise and Distortion
Single-ended, DIFF = 0, OFF = x, GAIN = 10 64 69 74 dB
Single-ended, Other Cases 57 62 68 dB
ENOB Effective Number of Bits
Single-ended, DIFF = 0, OFF = x, GAIN = 10 10.4 11.2 12 bits
Single-ended, Other Cases 9.2 10.0 11 bits
Table 45-36. Dynamic Performance Characteristics in Differential and 12-bit Mode
Symbol Parameter Conditions Min Typ Max Unit
SNR Signal to Noise Ratio
Differential, DIFF = 1, OFF = x, GAIN = 10 61 66 73 dB
Differential, Other Cases 59 64 67 dB
THD Total Harmonic Distortion
Differential, DIFF = 1, OFF = x, GAIN = 10 -67 -83 – dB
Differential, Other Cases -69 -85 – dB
SINAD Signal to Noise and Distortion
Differential, DIFF = 1, OFF = x, GAIN = 10 60 65 73 dB
Differential, Other Cases 59 64 67 dB
ENOB Effective Number of Bits
Differential, DIFF = 0, OFF = x, GAIN = 10 9.8 10.5 11.5 bits
Differential, Other Cases 9.5 10.3 11.3 bits