Datasheet

AD7684
Rev. A | Page 10 of 16
ENOB (Bits)
13
14
15
16
17
80
85
90
95
100
2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
REFERENCE VOLTAGE (V)
SNR, SINAD (dB)
04302-013
S/[N+D]
SNR
ENOB
Figure 13. SNR, SINAD, and ENOB vs. Reference Voltage
70
75
80
85
90
95
100
0 50 100 150 200
FREQUENCY (kHz)
SINAD (dB)
VREF = 5V, –1dB
VREF = 2.5V, –1dB
VREF = 5V, –10dB
04302-014
Figure 14. SINAD vs. Frequency
–115
–110
–105
–100
–95
–90
–85
–80
0 40 80 120 160 200
FREQUENCY (kHz)
THD (dB)
VREF = 2.5V, –1dB
VREF = 5V, –1dB
04302-015
Figure 15. THD vs. Frequency
0
200
400
600
800
1000
1200
2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
SUPPLY (V)
OPERATING CURRENT (
μ
A)
04302-016
f
S
= 100kSPS
Figure 16. Operating Current vs. Supply
0
200
400
600
800
1000
TEMPERATURE (°C)
OPERATING CURRENT (μA)
04302-017
–55 –35 –15 5 25 45 65 85 105 125
VDD = 5V
VDD = 2.7V
Figure 17. Operating Current vs. Temperature
0
250
500
750
1000
TEMPERATURE (°C)
POWER-DOWN CURRENT (μA)
04302-018
–55 –35 –15 5 25 45 65 85 105 125
Figure 18. Power-Down Current vs. Temperature