1.0
0.8
VDD = 2.35V
TEMP = 25؇C
0.6
fSAMPLE = 1MSPS
0.4
0.2
0
–0.2
–0.4
–0.6
–0.8
–1.0
0
512 1024 1536 2048 2560 3072 3584 4096
CODE
TPC 5. AD7476A INL Performance
1.0
0.8
VDD = 2.35V
TEMP = 25؇C
0.6
fSAMPLE = 1MSPS
0.4
0.2
0
–0.2
–0.4
–0.6
–0.8
–1.0
0
512 1024 1536 2048 2560 3072 3584 4096
CODE
TPC 6. AD7476A DNL Performance
AD7476A/AD7477A/AD7478A
0
VDD = 3.6V
–10
–20
–30
RIN = 10k⍀
–40
–50
RIN = 1k⍀
–60
–70
–80
–90
10
RIN = 130⍀
RIN = 13⍀
100
INPUT FREQUENCY – kHz
RIN = 0⍀
1000
TPC 7. THD vs. Analog Input Frequency for Various
Source Impedances
–60
–65
VDD = 2.35V
–70
VDD = 2.7V
–75
VDD = 4.75V
–80
–85
–90
10
VDD = 5.25V
VDD = 3.6V
100
INPUT FREQUENCY – kHz
1000
TPC 8. THD vs. Analog Input Frequency for Various
Supply Voltages
REV. C
–13–