Data Sheet
90
89
88
87
86
85
84
83
82
81
80
–10 –9 –8 –7 –6 –5 –4 –3 –2 –1 0
INPUT LEVEL (dBFS)
Figure 17. SNR vs. Input Level
2.0
1.8
IAVDD
1.6
1.4
IDVDD
1.2
IVIO
1.0
0.8
IBVDD
0.6
IREF
0.4
0.2
0
2.375
2.425
2.475
2.525
2.575
AVDD AND DVDD VOLTAGE (V)
Figure 18. Operating Current vs. Supply Voltage
2.625
AD7944
2.0
1.8
1.6
IAVDD
1.4
1.2
1.0
0.8
IBVDD
0.6
IREF
0.4
0.2
0
–55 –35 –15
5
25 45 65
TEMPERATURE (°C)
85 105 125
Figure 19. Operating Current vs. Temperature
14
12
10
8
6
4
IAVDD + IDVDD + IVIO
2
0
–55 –35 –15
5
25 45 65
TEMPERATURE (°C)
85 105 125
Figure 20. Power-Down Current vs. Temperature
Rev. C | Page 11 of 28