Datasheet
AD7982 Data Sheet
Rev. B | Page 10 of 24
100
95
90
85
80
SNR, SINAD (dB)
06513-034
2.25 2.75 3.25 3.75 4.25 4.75 5.25
REFERENCE VOLTAGE (V)
18
17
16
15
14
ENOB (Bits)
ENOB
SNR, SINAD
Figure 12. SNR, SINAD, and ENOB vs. Reference Voltage
100
98
96
94
92
90
SNR (dB)
–55 –35 –15 5 25 45 65 85 105 125
TEMPERATURE (°C)
06513-042
Figure 13. SNR vs. Temperature
100
95
90
85
80
0.1 1 10 100 1000
FREQUENCY (kHz)
SINAD (dB)
06513-031
Figure 14. SINAD vs. Frequency
06513-033
–
100
–105
–110
–115
–120
–125
–130
THD (dB)
2.25 2.75 3.25 3.75 4.25 4.75 5.25
REFERENCE VOLTAGE (V)
130
125
120
115
110
105
100
SFDR (dB)
THD
SFDR
Figure 15. THD, SFDR vs. Reference Voltage
–
115
–117
–119
–121
–123
–125
THD (dB)
–55 –35 –15 5 25 45 65 85 105 125
TEMPERATURE (°C)
06513-041
Figure 16. THD vs. Temperature
–
80
–85
–90
–95
–100
–105
–110
–115
–120
–125
0.1 1 10 100 1000
FREQUENCY (kHz)
THD (dB)
06513-030
Figure 17. THD vs. Frequency