ISL2671286 Datasheet, PDF (7/15 Pages) Intersil Corporation – 12-Bit, 20kSPS SAR ADC

ISL2671286
Typical Performance Characteristics At T_A = +25°C, +VCC = V_REF = 5V, f_SAMPLE = 12.5kHz, f_CLK = 16 * f_SAMPLE, unless
otherwise specified.
2.5
4.0
3.5
2.0
3.0
1.5
2.5
2.0
1.0
1.5
0.5
0.0
0
2
4
6
8
10
12
SAMPLE RATE (kHz)
FIGURE 6. REFERENCE CURRENT vs SAMPLE RATE
1.0
0.5
0.0
-55 -35 -15 5
25 45 65
TEMPERATURE (°C)
85 105
FIGURE 7. REFERENCE CURRENT vs TEMPERATURE
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
1
2
3
4
5
REFERENCE VOLTAGE (V)
FIGURE 8. CHANGE IN OFFSET vs REFERENCE VOLTAGE
1.0
0.8
0.6
0.4
0.2
0.0
-0.2
-0.4
-0.6
-0.8
-1.0
-55 -35 -15
5
25
45
65
TEMPERATURE (°C)
85 105
FIGURE 9. CHANGE IN OFFSET vs TEMPERATURE
0.5
0.4
0.3
0.2
CHANGE IN DNL (LSB)
0.1
0.0
-0.1
CHANGE IN INL (LSB)
-0.2
1
2
3
4
5
REFERENCE VOLTAGE (V)
FIGURE 10. CHANGE IN INTEGRAL LINEARITY AND DIFFERENTIAL
LINEARITY vs REFERENCE VOLTAGE
0.0
-0.5
-1.0
-1.5
-2.0
-2.5
-3.0
-3.5
-4.0
1
2
3
4
5
REFERENCE VOLTAGE (V)
FIGURE 11. CHANGE IN GAIN vs REFERENCE VOLTAGE
7
FN7863.0
November 1, 2011