Datasheet

ADuC841/ADuC842/ADuC843
Rev. 0 | Page 14 of 88
EXTERNAL REFERENCE (V)
–0.6
0.5
WCP–DNL
(LSBs)
1.0 2.0 2.5 5.0
–0.4
1.5
–0.2
0
0.2
0.4
0.6
WCN–DNL
(LSBs)
–0.4
–0.6
–0.2
0
0.2
0.4
0.6
AV
DD
/DV
DD
= 5V
f
S
= 152kHz
WCP DNL
WCN DNL
03260-0-011
Figure 13. Typical Worst-Case DNL Error vs. V
REF
, V
DD
= 5 V
EXTERNAL REFERENCE (V)
WCP–DNL (LSBs)
0.7
0.5
0.1
–0.5
–0.7
0.3
–0.3
AV
DD
/DV
DD
= 3V
f
S
= 152kHz
0.5 1.0 1.5 2.0 2.5 3.0
WCN–DNL (LSBs)
WCP DNL
WCN DNL
–0.1
0.7
0.5
0.1
–0.5
–0.7
0.3
–0.3
–0.1
03260-0-012
Figure 14. Typical Worst-Case DNL Error vs. V
REF
, V
DD
= 3 V
CODE
817 818 819 820 821
10000
OCCURRENCE
8000
6000
4000
2000
0
03260-0-013
Figure 15. Code Histogram Plot, V
DD
= 5 V
CODE
10000
817 818 819 820 821
OCCURRENCE
8000
6000
4000
2000
0
9000
7000
5000
3000
1000
03260-0-014
Figure 16. Code Histogram Plot, V
DD
= 3 V
20
0
–20
–40
–60
–80
–100
–120
–140
–160
dBs
20
FREQUENCY (kHz)
1007060504030
AV
DD
/DV
DD
= 5V
f
S
= 152kHz
f
IN
= 9.910kHz
SNR = 71.3dB
THD = –88.0dB
ENOB = 11.6
03260-0-015
Figure 17. Dynamic Performance at V
DD
= 5 V
20
0
–20
–40
–60
–80
–100
–120
–140
–160
dBs
20
FREQUENCY (kHz)
1007060504030
AV
DD
/DV
DD
= 3V
f
S
= 149.79kHz
f
IN
= 9.910kHz
SNR = 71.0dB
THD = –83.0dB
ENOB = 11.5
03260-0-016
Figure 18. Dynamic Performance at V
DD
= 3 V