Datasheet

AD7910/AD7920
Rev. C | Page 11 of 24
CODE
1.0
0.4
–0.2
0 1024
DNL ERROR (LSB)
512
0.8
0.6
0.2
0
–0.4
–0.6
–0.8
–1.0
1536 2048 2560 3072 3584 4096
V
DD
= 2.35V
TEMP = 25°C
f
SAMPLE
= 250kSPS
02976-011
Figure 11. AD7920 DNL Performance
INPUT FREQUENCY (kHz)
–30
–60
10 1000
THD (dB)
100
–10
–20
–40
–50
–70
–80
–90
V
DD
= 3.6V
R
IN
= 10kΩ
R
IN
= 1kΩ
R
IN
= 130Ω
R
IN
= 13Ω
R
IN
= 0Ω
02976-012
Figure 12. THD vs. Analog Input Frequency for Various Source Impedances
INPUT FREQUENCY (kHz)
–75
–90
10 1000
THD (dB)
100
–65
–70
–80
–85
V
DD
= 5.25V
V
DD
= 2.35V
V
DD
= 2.7V
V
DD
= 4.75V
V
DD
= 3.6V
02976-013
Figure 13. THD vs. Analog Input Frequency for Various Supply Voltages