ISL28023 Datasheet, PDF (26/55 Pages) Intersil Corporation – Bidirectional current sensing

ISL28023
Typical Performance Curves T_A = +25°C, VCC = 3.3V, VINP = VBUS = 12V, AUXP = AUXV = 3V,
VSHUNT = VAUXSHUNT = 80mV, Conversion Time: Aux = Primary = 2.05ms, Internal AVG Aux = Primary = 128; unless otherwise specified. (Continued)
80
SAMPLE SIZE = 1024
70
60
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40
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10
0 _{50 250 450 650 850 1050 1250 1450 1650 1850 2050}
ADC TIMING (µs)
FIGURE 87. PRIMARY SHUNT STABILITY: STDEV vs ACQUISITION TIME
500
SAMPLE SIZE = 1024
450
400
350
300
250
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150
100
50
0
50 250 450 650 850 1050 1250 1450 1650 1850 2050
ADC TIMING (µs)
FIGURE 88. PRIMARY SHUNT STABILITY: RANGE vs ACQUISITION TIME
12
SAMPLE SIZE = 1024
ADC TIMING = 2.048ms
10
8
6
4
2
0
0 40 80 120 160 200 240 280 320 360 400 440 480 520
INTERNAL AVERAGING
FIGURE 89. PRIMARY SHUNT STABILITY: STDEV vs INTERNAL
AVERAGING
35
SAMPLE SIZE = 1024
30
ADC TIMING = 2.048ms
25
20
15
10
5
0
0 40 80 120 160 200 240 280 320 360 400 440 480 520
INTERNAL AVERAGING
FIGURE 90. PRIMARY SHUNT STABILITY: RANGE vs INTERNAL
AVERAGING
80
SAMPLE SIZE = 1024
70
60
50
40
30
20
10
0
50 250 450 650 850 1050 1250 1450 1650 1850 2050
ADC TIMING (µs)
FIGURE 91. AUXILIARY SHUNT STABILITY: STDEV vs ACQUISITION TIME
500
SAMPLE SIZE = 1024
450
400
350
300
250
200
150
100
50
050 _{250 450 650 850 1050 1250 1450 1650 1850 2050}
ADC TIMING (µs)
FIGURE 92. AUXILIARY SHUNT STABILITY: RANGE vs ACQUISITION
TIME
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FN8389.5
March 18, 2016