Datasheet

REV. 0
ADuC831
–13–
FREQUENCY – kHz
010
dBs
20 40 50 60
–160
30 70
–140
–120
–100
–80
–60
–40
–20
0
20
AV
DD
/ DV
DD
= 5V
f
S
= 152kHz
f
IN
= 9.910kHz
SNR = 71.3dB
THD = –88.0dB
ENOB = 11.6
TPC 11. Dynamic Performance at V
DD
= 5 V
FREQUENCY – kHz
010
dBs
20 40 50 60
–160
30 70
–140
–120
–100
–80
–60
–40
–20
0
20
AV
DD
/ DV
DD
= 3V
f
S
= 149.79kHz
f
IN
= 9.910kHz
SNR = 71.0dB
THD = –83.0dB
ENOB = 11.5
TPC 12. Dynamic Performance at V
DD
= 3 V
EXTERNAL REFERENCE – V
50
0.5
SNR – dBs
1.0 2.0 2.5 5.0
55
1.5
60
65
70
75
80
THD – dBs
–100
–95
–90
–85
–80
–75
–70
AV
DD
/ DV
DD
= 5V
f
S
= 152kHz
SNR
THD
TPC 13. Typical Dynamic Performance vs. V
REF,
V
DD
= 5 V
EXTERNAL REFERENCE – V
SNR – dBs
80
75
65
50
70
55
AV
DD
/DV
DD
= 3V
f
S
= 152kHz
0.5 1.5 2.5
THD – dBs
SNR
THD
60
–70
–75
–85
–100
–80
–95
–90
1.0 2.0 3.0
TPC 14. Typical Dynamic Performance vs. V
REF,
V
DD
= 3 V
FREQUENCY – kHz
64
92.262
SNR – dBs
119.05
172.62 199.41 226.19
66
145.83
68
70
72
76
80
AV
DD
/ DV
DD
= 5V
78
74
62
60
65.476
TPC 15. Typical Dynamic Performance vs.
Sampling Frequency
TEMPERATURE – C
0.40
–40
VOLTAGE – V
–20
0.45
0.50
0.55
0.60
0.70
0.80
0.75
0.65
AV
DD
/ DV
DD
= 3V
SLOPE = 2mV/C
0
25 50 85
TPC 16. Typical Temperature Sensor Output vs.
Temperature