Datasheet

AD7091 Data Sheet
Rev. A | Page 8 of 20
50
55
60
65
70
75
1 10 100
SINAD (dB)
INPUT FREQUENCY (kHz)
V
DD
= 2.7V
T
A
= 25°C
f
SAMPLE
= 1MSPS
10494-010
V
DD
= 3V
V
DD
= 5V
Figure 10. SINAD vs. Analog Input Frequency for Various Supply Voltages
60
50
40
30
20
10
0
NUMBER OF OCCURRENCES (k)
CODE
2047 2048 2049 2050 2051
8108
5992
51,436
V
DD
= 3.3V
T
A
= 25
°C
65,536 SAMPLES
00
10494-01
1
Figure 11. Histogram of Codes at Code Center (V
DD
/2)
7
6
5
4
3
2
1
0
10
20
30
40 50
t
2
DELAY (ns)
SDO CAPACITANCE LOAD (pF)
–40°C
+25°C
+125°C
V
DD
= 3V
10494-012
Figure 12. t
2
Delay vs. SDO Capacitance Load, V
DD
= 3 V
250
300
350
400
450
500
550
2.25 2.50
2.75
3.00 3.25
3.50
3.75
4.00
4.504.25 4.75 5.00
SUPPLY CURRENT (µA)
SUPP
L
Y VO
LTAGE (V)
–40°C
f
SAMPLE
= 1MSPS
+125°C
10494-013
+25°C
+85°C
Figure 13. Operational Supply Current vs. Supply Voltage
for Various Temperatures
0
1000
2000
3000
4000
5000
6000
SUPPLY CURRENT (nA)
TEMPERATURE (°C)
V
DD
= 2.09V
V
DD
= 3V
V
DD
= 3.6V
V
DD
= 5.25V
–40 25 85 125
10494-014
Figure 14. Power-Down Supply Current vs. Temperature
for Various Supply Voltages