Datasheet

AD7944
Rev. A | Page 11 of 28
–10 –9 –8 –7 –6 –5 –4 –3 –2 –1 0
SNR (dB)
INPUT LEVEL (dBFS)
04658-117
80
81
82
83
84
85
86
87
88
89
90
Figure 17. SNR vs. Input Level
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
2.375 2.625
I
AVDD
I
DVDD
I
VIO
I
BVDD
I
REF
2.5752.5252.4752.425
OPERATING CURRENT (mA)
AVDD AND DVDD VOLTAGE (V)
04658-118
Figure 18. Operating Current vs. Supply Voltage
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
–55 –35 –15 5 25 45 65 85 105 125
I
AVDD
I
BVDD
I
REF
OPERATING CURRENT (mA)
TEMPERATURE (°C)
04658-119
Figure 19. Operating Current vs. Temperature
14
12
10
8
6
4
2
0
–55 –35 –15 5 25 45 65 85 105 125
SUPPLY CURRENT (µA)
TEMPERATURE (°C)
I
AVDD
+ I
DVDD
+ I
VIO
04658-120
Figure 20. Power-Down Current vs. Temperature