ISL28023 Datasheet, PDF (17/55 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)
20
V_CC = 6V
15
10
5
0
-5
-10
-15
-20 ₀
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
CMV (V)
FIGURE 33. AUXILIARY V_SHUNT V_OS vs CMV
95
85
TO CMV = V_CC
75
65
55
45
V_INPUT = 80mV_P-P SINE WAVE
FREQUENCY = 100Hz
ADC TIMING = 64µs
35
-80 -70 -60 -50 -40 -30 -20 -10 0
CMV (mV)
FIGURE 34. AUXILIARY V_SHUNT COMMON-MODE RANGE
6
5
4
3
2
1
0
V_AUXSHUNT MEASUREMENT ERROR (%)
FIGURE 35. AUXILIARY V_SHUNT ADC GAIN ERROR
7
6
5
4
3
2
1
0
V_AUXSHUNT GAIN ERROR (ppm/°C)
FIGURE 36. AUXILIARY V_SHUNT ADC GAIN ERROR TC
0.5
0.4
0.3
0.2
0.1
V_CC = 3.3V
V_CC = 3V
0
-0.1
-0.2
-0.3
V_CC = 5V
-0.4
-0.5
-0.08 -0.06 -0.04 -0.02 0
0.02 0.04 0.06 0.08
V_INPUT (V)
FIGURE 37. AUXILIARY V_SHUNT MEASUREMENT ERROR vs INPUT
0.5
0.4
0.3
0.2
V_CC = 3.3V
0.1
0
-0.1
-0.2
V_CC = 5V
V_CC = 3V
-0.3
-0.4
-0.5
-60 -40 -20 0 20 40 60 80 100 120 140 160
TEMPERATURE (°C)
FIGURE 38. AUXILIARY V_SHUNT MEASUREMENT ERROR vs
TEMPERATURE
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FN8389.5
March 18, 2016