ISL28023

FN8389 Rev.6.03

Page 13 of 55

Oct 27, 2022

FIGURE 9. PRIMARY VSHUNT CMRR vs CMV

FIGURE 10. PRIMARY VSHUNT AC CMRR vs FREQUENCY

FIGURE 11. PRIMARY VSHUNT COMMON-MODE RANGE

FIGURE 12. SMBALERT CURRENT DRIVES

FIGURE 13. PRIMARY VSHUNT ADC GAIN ERROR

FIGURE 14. PRIMARY VSHUNT ADC GAIN ERROR TC

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

-15

-10

-5

0

5

10

15

20

0

8

16

24

32

40

48

56

64

CMV (V)

90

95

100

105

110

115

120

125

130

10

100

1k

10k

100k

FREQUENCY (Hz)

TIME = 0.128ms

TIME = 2.048ms

TIME = 1.024ms

TIME = 0.512ms

TIME = 0.256ms

TIME = 0.64ms

35

45

55

65

75

85

95

-80

-70

-60

-50

-40

-30

-20

-10

0

CMV (mV)

VINPUT = 80MVP-P SINE WAVE

TO CMV = 60V

FREQUENCY = 100Hz

ADC TIMING = 64µs

0

20

40

60

80

100

120

140

160

180

0.01

0.1

1

10

CURRENT LOAD (mA)

SMBALERT1

SINK

SMBALERT2

SOURCE

SMBALERT2

SINK

0

1

2

3

4

5

6

7

8

GAIN ERROR (%)

0

1

2

3

4

5

6

VSHUNT GAIN ERROR TC (ppm/°C)