Data Sheet
105
102
99
96
93
90
87
84
81
–10
1000
SNR 5V
SNR 2.5V
THD 5V
THD 2.5V
–8
–6
–4
–2
INPUT LEVEL (dB)
Figure 19. SNR, THD vs. Input Level
–90
–95
–100
–105
–110
–115
–120
–125
–130
0
VDD = 5V
fS =100kSPS
750
VDD = 2.5V
500
250
VIO
0
–55 –35 –15
5 25 45 65
TEMPERATURE (°C)
85 105 125
Figure 20. Operating Current vs. Temperature
1000
fS =100kSPS
750
VDD
500
250
VIO
0
2.3 2.6 2.9 3.2 3.5 3.8 4.1 4.4 4.7 5.0 5.3
SUPPLY (V)
Figure 21. Operating Current vs. Supply
AD7691
6
GAIN ERROR
4
2
0
–2
–4
OFFSET ERROR
–6
–55 –35 –15
5 25 45 65
TEMPERATURE (°C)
85 105 125
Figure 22. Zero Error, Gain Error vs. Temperature
1000
750
500
250
VDD + VIO
0
–55 –35 –15 5
25 45 65 85 105 125
TEMPERATURE (°C)
Figure 23. Power-Down Current vs. Temperature
25
20
15
VDD = 5V, 85°C
10
VDD = 5V, 25°C
5
0
0
20
40
60
80
100
120
SDO CAPACITIVE LOAD (pF)
Figure 24. tDSDO Delay vs. Capacitance Load and Supply
Rev. E | Page 11 of 28