Datasheet

AD7476A/AD7477A/AD7478A
Rev. F | Page 13 of 28
CODE
1.0
0.4
–0.2
0 1024
INL 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
= 1MSPS
02930-011
Figure 11. AD7476A INL Performance
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
= 1MSPS
02930-012
Figure 12. AD7476A DNL Performance
INPUT FREQUENCY (kHz)
0
–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
02930-013
Figure 13. THD vs. Analog Input Frequency for Various Source Impedances
INPUT FREQUENCY (kHz)
–
60
–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
02930-014
Figure 14. THD vs. Analog Input Frequency for Various Supply Voltages