Datasheet

Data Sheet AD7091
Rev. A | Page 7 of 20
TYPICAL PERFORMANCE CHARACTERISTICS
–140
–120
–100
–80
–60
–40
–20
0
0 100 200 300 400 500
AMPLITUDE (dB)
FREQUENCY (kHz)
V
DD
= 3V
T
A
= 25°C
f
IN
= 10kHz
f
SAMPLE
= 1MSPS
SNR = 69.84dB
SINAD = 69.56dB
THD = –81.05dB
10494-004
Figure 4. Typical Dynamic Performance
–1.0
–0.8
–0.6
–0.4
–0.2
0
0.2
0.4
0.6
0.8
1.0
0
512
1024
1536
2048
2560 3072
3584
4096
INL (LSB)
CODE
V
DD
= 3V
T
A
= 25°C
f
SAMPLE
= 1MSPS
10494-005
Figure 5. Typical INL Performance
–1.0
–0.8
–0.6
–0.4
–0.2
0
0.2
0.4
0.6
0.8
1.0
0 512 1024 1536 2048 2560 3072 3584 4096
DNL (LSB)
CODE
V
DD
= 3V
T
A
= 25°C
f
SAMPLE
= 1MSPS
10494-006
Figure 6. Typical DNL Performance
60
62
64
66
68
70
72
1
10 100
SNR (dB)
INPUT FREQUENCY (kHz)
T
A
= 25°C
f
SAMPLE
= 1MSPS
10494-007
V
DD
= 2.7V
V
DD
= 5V
V
DD
= 3V
Figure 7. SNR vs. Analog Input Frequency for Various Supply Voltages
–100
–90
–80
–70
–60
–50
–40
–30
–20
–10
0
1
10
100
THD (dB)
INPUT FREQUENC
Y (kHz)
V
DD
= 2.7V
V
DD
= 3V
T
A
= 25°C
f
SAMPLE
= 1MSPS
10494-008
Figure 8. THD vs. Analog Input Frequency for Various Supply Voltages
–90
–85
–80
–75
–70
–65
–60
–55
–50
10 100 1000 10000
THD (dB)
SOURCE IMPEDANCE (Ω)
V
DD
= 3V
T
A
= 25°C
f
IN
= 10kHz
f
SAMPLE
= 1MSPS
10494-009
Figure 9. THD vs. Source Impedance