ISL2671286 Datasheet, PDF (8/15 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. (Continued)
12.0
11.5
11.0
10.5
10.0
9.5
9.0
8.5
8.0
7.5
0.1
1.0
10.0
REFERENCE VOLTAGE (V)
FIGURE 12. EFFECTIVE NUMBER OF BITS vs REFERENCE VOLTAGE
3
2
1
0
-1
-2
-3
0
512 1024 1536 2048 2560 3072 3584 4096
CODE
FIGURE 13. DIFFERENTIAL LINEARITY ERROR vs CODE
100
90
80
70
60
50
40
30
20
10
0
0.1
1.0
10.0
FREQUENCY (kHz)
FIGURE 14. SIGNAL-TO-(NOISE + DISTORTION) vs FREQUENCY
100
90
80
SPURIOUS FREE DYNAMIC RANGE
70
SIGNAL-TO-NOISE RATIO
60
50
40
30
20
10
0
0.1
1.0
10.0
FREQUENCY (kHz)
FIGURE 15. SPURIOUS FREE DYNAMIC RANGE AND
SIGNAL-TO-NOISE RATIO vs FREQUENCY
80
70
60
50
40
30
20
10
0
-40 -35 -30 -25 -20 -15 -10 -5
0
INPUT LEVEL (dB)
FIGURE 16. SIGNAL-TO-(NOISE + DISTORTION) vs INPUT LEVEL
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
0.1
1.0
10.0
FREQUENCY (kHz)
FIGURE 17. TOTAL HARMONIC DISTORTION vs FREQUENCY
8
FN7863.0
November 1, 2011