Datasheet

Data Sheet AD7691
Rev. C | Page 11 of 28
105
81
–10 0
INPUT LEVEL (dB)
SNR (dB)
–130
THD (dB)
–
90
–95
–100
–105
–110
–115
–120
–125
06146-041
102
99
96
93
90
87
84
–8 –6 –4 –2
SNR 2.5V
SNR 5V
THD 2.5V
THD 5V
Figure 19. SNR, THD vs. Input Level
TEMPERATURE (°C)
OPERATING CURRENT (µA)
1000
750
500
250
0
–55 –35 –15 5 25 45 65 85 105 125
VIO
VDD = 2.5V
VDD = 5V
0
6146-042
f
S
=100kSPS
Figure 20. Operating Current vs. Temperature
SUPPLY (V)
OPERATING CURRENT (µA)
1000
750
500
250
0
2.3 2.6 2.9 3.2 3.5 3.8 4.1 4.4 4.7 5.0 5.3
VIO
VDD
0
6146-043
f
S
=100kSPS
Figure 21. Operating Current vs. Supply
6
–6
TEMPERATURE (°C)
OFFSET, GAIN ERROR (LSB)
–55 125
4
2
0
–2
–4
–35–155 25456585105
GAIN ERROR
OFFSET ERROR
06146-044
Figure 22. Zero Error, Gain Error vs. Temperature
TEMPERATURE (°C)
POWER-DOWN CURRENT (nA)
1000
750
500
250
0
–55 –35 –15 5 25 45 65 85 105 125
VDD + VIO
0
6146-047
Figure 23. Power-Down Current vs. Temperature
SDO CAPACITIVE LOAD (pF)
1200 20406080100
t
DSDO
DELAY (ns)
25
20
15
10
5
0
VDD = 5V, 85°C
VDD = 5V, 25°C
0
6146-034
Figure 24. t
DSDO
Delay vs. Capacitance Load and Supply