Datasheet

AD7908/AD7918/AD7928
Rev. D | Page 14 of 32
f
SAMPLE
= 1MSPS
T
A
= 25°C
RANGE = 0V TO REF
IN
AV
DD
= 5.25V
R
IN
= 1000Ω
R
IN
= 50Ω
R
IN
= 100Ω
R
IN
= 10Ω
–
50
–60
–55
–70
–65
–80
–75
–85
–90
10 100 1000
THD (dB)
INPUT FREQUENCY (kHz)
03089-008
Figure 8. AD7928 THD vs. Analog Input Frequency for
Various Source Impedances
1.0
0.6
0.8
0.2
0.4
0
–0.2
–0.4
–0.6
–0.8
–1.0
0 1024 2048 30721536512 2560 3584 4096
INL ERROR (LSB)
CODE
AV
DD
= V
DRIVE
= 5V
TEMPERATURE = 25°C
03089-009
Figure 9. AD7928 Typical INL
0
1.0
0.6
0.8
0.2
0.4
–0.2
–0.4
–0.6
–0.8
–1.0
0 1024 2048 30721536512 2560 3584 4096
DNL ERROR (LSB)
CODE
AV
DD
= V
DRIVE
= 5V
TEMPERATURE = 25°C
03089-010
Figure 10. AD7928 Typical DNL