ISL267450_14 Datasheet, PDF (10/19 Pages) Intersil Corporation – 12-Bit, 1MSPS SAR ADCs

ISL267450
Typical Performance Characteristics (Continued)
1.0
0.8
0.6
0.4
0.2
0.0
-0.2
-0.4
-0.6
-0.8
-1.0
0
1024
2048
CODE
3072
4096
3.0
2.5
2.0
1.5
1.0
POS DNL
0.5
0.0
-0.5
NEG DNL
-1.0
-1.5
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5
V_REF (V)
FIGURE 9. TYPICAL INL FOR V_DD = 3V
FIGURE 10. CHANGE IN DNL vs V_REF FOR V_DD = 5V
2.0
1.5
1.0
POS DNL
0.5
0.0
-0.5
NEG DNL
-1.0
-1.5
0.0
0.5
1.0
1.5
2.0
2.5
V_REF (V)
FIGURE 11. CHANGE IN DNL vs V_REF FOR V_DD = 3.3V
2.5
2.0
1.5
1.0
POS INL
0.5
0.0
-0.5
NEG INL
-1.0
-1.5
-2.00.0
0.5
1.0
1.5
2.0
2.5
V_REF (V)
FIGURE 13. CHANGE IN INL vs V_REF FOR V_DD = 3.3V
3.0
2.0
1.0
POS INL
0.0
-1.0
NEG INL
-2.0
-3.0
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
V_REF (V)
FIGURE 12. CHANGE IN INL vs V_REF FOR V_DD = 5V
1.0
0.0 ^{3.3V VDD}
-1.0
-2.0
-3.0
5V VDD
-4.0
-5.0
-6.0
-7.0
-8.0
-9.0
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5
V_REF (V)
FIGURE 14. CHANGE IN OFFSET ERROR vs V_REF FOR V_DD = 5V
AND 3.3V
10
FN8341.0
August 10, 2012